@import url("https://fonts.googleapis.com/css2?family=Poppins:wght@400;500;600&display=swap");
@import url("https://fonts.googleapis.com/css2?family=Lobster&display=swap");

:root {
  --header-height: 3rem;

  /* ========= LIGHT THEME (YIN–YANG) ========= */
  --first-color: #111111;
  --first-color-second: #111111;
  /* elemen blok/CTA besar */
  --first-color-alt: #222222;
  /* hover, state alternatif */
  --first-color-lighter: #EDEDED;
  /* garis lembut/hover ringan */

  --title-color: #0F0F0F;
  /* judul (ink) */
  --text-color: #333333;
  /* isi teks */
  --text-color-light: #666666;
  /* teks sekunder */
  --input-color: #F5F5F5;
  /* field/form */
  --body-color: #FAFAFA;
  /* latar halaman */
  --container-color: #FFFFFF;
  /* kartu/kontainer */

  --body-font: "Poppins", sans-serif;
  --big-font-size: 2rem;
  --h1-font-size: 1.5rem;
  --h2-font-size: 1.25rem;
  --h3-font-size: 1.125rem;
  --normal-font-size: 0.938rem;
  --small-font-size: 0.813rem;
  --smaller-font-size: 0.75rem;

  --font-medium: 500;
  --font-semi-bold: 600;

  --margin-bottom-0-25: 0.25rem;
  --margin-bottom-0-5: 0.5rem;
  --margin-bottom-0-75: 0.75rem;
  --margin-bottom-0-1: 1rem;
  --margin-bottom-0-1-5: 1.5rem;
  --margin-bottom-0-2: 2rem;
  --margin-bottom-0-2-5: 2.5rem;
  --margin-bottom-0-3: 3rem;

  --z-tooltip: 10;
  --z-fixed: 100;
  --z-model: 100;

  --shadow-color: rgba(0, 0, 0, 0.15);
  /* Default shadow color (light theme) */

  @media screen and (min-width: 968px) {
    :root {
      --big-font-size: 3rem;
      --h1-font-size: 2.25rem;
      --h2-font-size: 1.5rem;
      --h3-font-size: 1.25rem;
      --normal-font-size: 1rem;
      --small-font-size: 0.873rem;
      --smaller-font-size: 0.813rem;
    }
  }
}

/* dark color scheme  */
body.dark-theme {
  /* ========= DARK THEME (BALANCE/INVERTED) ========= */
  --first-color: #F0F0F0;
  /* aksen terang */
  --first-color-alt: #E0E0E0;
  /* hover terang */
  /* Mengubah warna aksen utama ke hijau neon */
  --first-color-second: #0B0B0C;
  /* blok/CTA besar gelap */
  /* Warna latar utama yang gelap */
  --title-color: #FAFAFA;
  --text-color: #CFCFCF;
  --input-color: #151515;
  --body-color: #0B0B0C;
  --container-color: #121212;
  --shadow-color: rgba(255, 255, 255, 0.15);
  /* Shadow color for dark theme */
  transition: 0.3s ease-in-out;
}

.nav-btns {
  display: flex;
  align-items: center;
}

/* theme  */
.change-theme {
  font-size: 1.25rem;
  color: var(--title-color);
  margin-right: 1rem;
  cursor: pointer;
}

.change-theme:hover {
  color: var(--first-color);
}

/* theme transition  */
.header,
.footer-bg {
  transition: 0.3s ease-in;
}

/* ==================== UX ENHANCEMENTS ==================== */

/* Scroll Progress Bar */
#scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--first-color), var(--first-color-alt));
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
  z-index: 9999;
  width: 100%;
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.1s ease;
  will-change: transform;
}

/* Skip to main content link for accessibility */
.skip-link {
  position: absolute;
  top: -100px;
  left: 10px;
  background: var(--first-color);
  color: var(--container-color);
  padding: 12px 20px;
  text-decoration: none;
  border-radius: 0 0 8px 8px;
  z-index: 10000;
  font-weight: var(--font-semi-bold);
  box-shadow: 0 4px 12px var(--shadow-color);
  transition: top 0.3s ease;
}

.skip-link:focus {
  top: 0;
}

/* Enhanced theme toggle button */



.change-theme {
  transition: all 0.3s ease;
}

.change-theme:hover {
  transform: rotate(20deg) scale(1.1);
  color: var(--first-color);
}

.change-theme:active {
  transform: rotate(20deg) scale(0.95);
}

/* Enhanced focus states for accessibility */
*:focus-visible {
  outline: 3px solid var(--first-color);
  outline-offset: 3px;
  border-radius: 4px;
}

button:focus-visible,
a:focus-visible {
  outline: 3px solid var(--first-color);
  outline-offset: 3px;
}

/* Ripple effect for buttons */
.button,
.services-button,
.portfolio-button {
  position: relative;
  overflow: hidden;
}

.ripple {
  position: absolute;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.6);
  transform: scale(0);
  animation: ripple-animation 0.6s ease-out;
  pointer-events: none;
}

@keyframes ripple-animation {
  to {
    transform: scale(4);
    opacity: 0;
  }
}

* {
  box-sizing: border-box;
  padding: 0;
  margin: 0;
}

html {
  scroll-behavior: smooth;
  scrollbar-width: none;
  overflow-x: hidden;
}

body {
  margin: 0 0 var(--header-height) 0;
  font-family: var(--body-font);
  font-size: var(--normal-font-size);
  background-color: var(--body-color);
  color: var(--text-color);
  transition: 0.3s ease-in-out;
  overflow-x: hidden;
}

h1,
h2,
h3,
h4 {
  color: var(--title-color);
  font-weight: var(--font-semi-bold);
}

ul {
  list-style: none;
}

a {
  text-decoration: none;
}

img {
  max-width: 100%;
  height: auto;
}


/* Ensure all main content is above particles */
.main,
.header,
.footer {
  position: relative;
  z-index: 10;
}


/* ========= Yin–Yang Smoke Ring for Home Image ========= */
.smoke-yinyang {
  --size: min(48vmin, 360px);
  /* ubah ukuran lingkaran */
  --ring-inner: 52%;
  /* radius bagian dalam asap relatif ke diameter */
  --ring-outer: 78%;
  /* radius bagian luar asap */
  --spin-a: 7s;
  /* durasi putar layer 1 */
  --spin-b: 10s;
  /* durasi putar layer 2 (berlawanan) */

  position: relative;
  width: var(--size);
  aspect-ratio: 1;
  border-radius: 50%;
  display: grid;
  place-items: center;
  isolation: isolate;
  /* bantu blending rapi */
}

.smoke-yinyang .avatar {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
  display: block;
  box-shadow: 0 10px 30px var(--shadow-color);
}

/* Dua layer asap yang saling mengejar (ala yin–yang) */
.smoke-yinyang::before,
.smoke-yinyang::after {
  content: "";
  position: absolute;
  inset: -14%;
  /* keluar sedikit dari gambar */
  border-radius: 50%;
  pointer-events: none;
  filter: url(#smokeNoise);
  /* gunakan SVG filter di index.html */
  will-change: transform;
  transform-origin: 50% 50%;
  opacity: .95;

  /* “Donut mask” supaya asap cuma di cincin luar gambar */
  mask: radial-gradient(circle, transparent calc(var(--ring-inner) - 1px),
      #000 var(--ring-inner),
      #000 var(--ring-outer),
      transparent calc(var(--ring-outer) + 1px));
  -webkit-mask: radial-gradient(circle, transparent calc(var(--ring-inner) - 1px),
      #000 var(--ring-inner),
      #000 var(--ring-outer),
      transparent calc(var(--ring-outer) + 1px));
}

/* Layer 1: asap terang (screen) */
.smoke-yinyang::before {
  /* Dua “busur” asap pada 0° dan 180° */
  background:
    conic-gradient(from 0deg,
      rgba(255, 255, 255, 0) 0 120deg,
      rgba(255, 255, 255, .85) 160deg 200deg,
      rgba(255, 255, 255, 0) 240deg 360deg);
  mix-blend-mode: screen;
  /* menyala di dark & tetap lembut di light */
  animation: spin-yys var(--spin-a) linear infinite;
}

/* Layer 2: asap gelap (multiply), berputar berlawanan arah */
.smoke-yinyang::after {
  background:
    conic-gradient(from 180deg,
      rgba(0, 0, 0, 0) 0 120deg,
      rgba(0, 0, 0, .55) 160deg 200deg,
      rgba(0, 0, 0, 0) 240deg 360deg);
  mix-blend-mode: multiply;
  animation: spin-yys var(--spin-b) linear infinite reverse;
}

/* Animasi putar */
@keyframes spin-yys {
  to {
    transform: rotate(360deg);
  }
}

/* Aksesibilitas: hormati preferensi pengguna */
@media (prefers-reduced-motion: reduce) {

  .smoke-yinyang::before,
  .smoke-yinyang::after {
    animation: none;
    opacity: .6;
  }
}

html[data-theme="dark"] .smoke-yinyang::before {
  opacity: 1;
}

html[data-theme="dark"] .smoke-yinyang::after {
  opacity: .95;
}


/* Menata gaya wadah kanvas baru */
.home-img {
  position: relative;
  display: grid;
  place-items: center;
  overflow: visible;
  /* penting: jangan memotong konten hasil clip-path */
  isolation: isolate;
  /* jaga layer kalau ada efek lain */
}

/* Penyesuaian responsif untuk wadah */
@media screen and (max-width: 350px) {
  .home-img {
    width: 200px;
    height: 200px;
  }
}

@media screen and (min-width: 568px) {
  .home-img {
    order: 1;
    justify-self: center;
  }
}

@media screen and (min-width: 768px) {
  .home-img {
    width: 270px;
    height: 270px;
  }
}

@media screen and (min-width: 1024px) {
  .home-img {
    width: 320px;
    height: 320px;
  }
}

/* resuable css class  */
.section {
  padding: 2rem 0 4rem;
  transition: transform 0.8s cubic-bezier(0.175, 0.885, 0.32, 1.2), opacity 0.8s ease-out, filter 0.8s ease-out;
  transform-style: preserve-3d;
  will-change: auto;
}

.section.hidden-down {
  opacity: 0;
  transform: perspective(1500px) translateY(100px) scale(0.92) rotateX(-8deg);
  filter: blur(4px);
}

.section.hidden-up {
  opacity: 0;
  transform: perspective(1500px) translateY(-100px) scale(0.92) rotateX(8deg);
  filter: blur(4px);
}

.section.active-3d {
  opacity: 1;
  transform: perspective(1500px) translateY(0) scale(1) rotateX(0deg);
  filter: blur(0);
}

.section-title {
  font-size: var(--h1-font-size);
}

.section-subtitle {
  display: block;
  font-size: var(--small-font-size);
  margin-bottom: var(--margin-bottom-0-3);
}

.section-title,
.section-subtitle {
  text-align: center;
}

/* layout  */
.container {
  max-width: 768px;
  margin-left: var(--margin-bottom-0-1-5);
  margin-right: var(--margin-bottom-0-1-5);
}

.grid {
  display: grid;
  gap: 1.5rem;
}

.header {
  width: 100%;
  position: fixed;
  bottom: 0;
  left: 0;
  z-index: var(--z-fixed);
  background-color: var(--body-color);
}

.scroll-header {
  box-shadow: 0 1px 4px var(--shadow-color);
}

.nav {
  max-width: 968px;
  height: var(--header-height);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-logo,
.nav-toggle {
  color: var(--title-color);
  font-weight: var(--font-medium);
  font-family: "Lobster";
  font-size: 25px;
}

.nav-logo:hover {
  color: var(--first-color);
}

.nav-toggle {
  font-size: 1.1rem;
  cursor: pointer;
}

.nav-toggle:hover {
  color: var(--first-color);
}

@media screen and (max-width: 767px) {
  .nav-menu {
    position: fixed;
    bottom: -100%;
    left: 0;
    width: 100%;
    background-color: var(--body-color);
    padding: 2rem 1.5rem 4rem;
    box-shadow: 0 -1px 4px var(--shadow-color);
    border-radius: 1.5rem 1.5rem 0 0;
    transition: 0.3s;
  }
}

.nav-list {
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.nav-link {
  display: flex;
  flex-direction: column;
  align-items: center;
  font-size: var(--small-font-size);
  color: var(--title-color);
  font-weight: var(--font-medium);
}

.nav-link:hover {
  color: var(--first-color);
}

.nav-icon {
  font-size: 1.2rem;
}

.nav-close {
  position: absolute;
  right: 1.3rem;
  bottom: 0.5rem;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--first-color);
}

.nav-close:hover {
  color: var(--first-color);
}

/* ==================== CV PREVIEW MODAL ==================== */
.cv-modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10000;
  opacity: 0;
  visibility: hidden;
  transition: all 0.4s ease;
  padding: 1rem;
}

.cv-modal.active {
  opacity: 1;
  visibility: visible;
}

.cv-modal-content {
  background-color: var(--container-color);
  border-radius: 1rem;
  max-width: 900px;
  width: 100%;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
  transform: scale(0.8);
  transition: transform 0.4s ease;
}

.cv-modal.active .cv-modal-content {
  transform: scale(1);
}

.cv-modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem 2rem;
  border-bottom: 1px solid var(--first-color-lighter);
}

.cv-modal-header h3 {
  margin: 0;
  font-size: var(--h2-font-size);
  color: var(--title-color);
}

.cv-modal-close {
  font-size: 1.5rem;
  color: var(--first-color);
  cursor: pointer;
  transition: all 0.3s ease;
}

.cv-modal-close:hover {
  color: var(--first-color-alt);
  transform: rotate(90deg) scale(1.1);
}

.cv-modal-body {
  flex: 1;
  padding: 1.5rem;
  overflow: hidden;
  display: flex;
  justify-content: center;
  align-items: center;
}

#cv-iframe {
  width: 100%;
  height: 60vh;
  border: none;
  border-radius: 0.5rem;
  box-shadow: 0 2px 8px var(--shadow-color);
}

.cv-modal-footer {
  padding: 1.5rem 2rem;
  border-top: 1px solid var(--first-color-lighter);
  display: flex;
  justify-content: center;
  gap: 1rem;
}

.cv-modal-footer .button {
  margin: 0;
}

/* Mobile responsive */
@media screen and (max-width: 768px) {

  .cv-modal-header,
  .cv-modal-footer {
    padding: 1rem 1.5rem;
  }

  .cv-modal-header h3 {
    font-size: var(--h3-font-size);
  }

  #cv-iframe {
    height: 50vh;
  }
}

@media screen and (max-width: 350px) {
  .cv-modal-content {
    max-width: 95%;
  }

  #cv-iframe {
    height: 40vh;
  }
}

.show-menu {
  bottom: 0;
}

/* Prevent body scroll when mobile menu is open */
body.menu-open {
  overflow: hidden;
}

body.modal-open {
  overflow: hidden;
}

/* Enhanced mobile menu slide animation */
.nav-menu {
  animation: slideUp 0.4s ease-out;
}

@keyframes slideUp {
  from {
    bottom: -100%;
    opacity: 0;
  }

  to {
    bottom: 0;
    opacity: 1;
  }
}

.active-link {
  color: var(--first-color);
}

.home-container {
  gap: 1rem;
  height: 100vh;
}

.home-content {
  grid-template-columns: 0.5fr 3fr;
  padding-top: 3.5rem;
  align-items: center;
}

.home-social {
  display: grid;
  grid-template-columns: max-content;
  row-gap: 1rem;
}

.home-social-icon {
  font-size: 1.25rem;
  color: var(--first-color);
  transition: all 0.3s ease;
}

.home-social-icon:hover {
  color: var(--first-color-alt);
  transform: translateY(-5px) scale(1.1);
  animation: bounce 0.6s ease;
}

@keyframes bounce {

  0%,
  100% {
    transform: translateY(-5px) scale(1.1);
  }

  50% {
    transform: translateY(-10px) scale(1.15);
  }
}

.home-blob {
  width: 200px;
  fill: var(--first-color);
}

.home-blob-img {
  width: 240px;
}

.home-data {
  grid-column: 1/3;
}

.home-title {
  font-size: var(--big-font-size);
}

.home-subtitle {
  font-size: var(--h3-font-size);
  color: var(--text-color);
  font-weight: var(--font-medium);
  margin-bottom: var(--margin-bottom-0-75);
}

.home-description {
  margin-bottom: var(--margin-bottom-0-2);
}

.home-scroll {

  position: relative;
}

.home-scroll-button {
  color: var(--first-color);
  transition: 0.3s;
}

.home-scroll-button:hover {
  transform: translateY(0.25rem);
}

.home-scroll-mouse {
  margin-right: 0.125rem;
  width: 24px;
}

.home-scroll-name {
  font-size: var(--small-font-size);
  color: var(--title-color);
  font-weight: var(--font-medium);
  margin-right: var(--margin-bottom-0-25);
}

.home-scroll-arrow {
  font-size: 1rem;
}


/* buttons  */
.button {
  display: inline-block;
  background-color: var(--first-color);
  color: var(--container-color);
  padding: 1rem;
  border-radius: 0.5rem;
  font-weight: var(--font-medium);
  box-shadow: 0 4px 8px var(--shadow-color);
  transition: all 0.3s ease;
}

.button:hover {
  background-color: var(--first-color-alt);
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 8px 16px var(--shadow-color);
}

.button:active {
  transform: translateY(-1px) scale(0.98);
  box-shadow: 0 2px 4px var(--shadow-color);
}

.button-icon {
  font-size: 1.25rem;
  margin-left: var(--margin-bottom-0-5);
  transition: 0.3s;
}

.button-flex {
  display: inline-flex;
  align-items: center;
}

.button-small {
  padding: 0.75rem 1rem;
}

.button-white {
  background-color: #fff;
  color: var(--first-color);
}

.button-white:hover {
  background-color: #f1f1f1;
}

.button-link {
  padding: 0;
  background-color: transparent;
  color: var(--first-color);
}

.button-link:hover {
  background-color: transparent;
  color: var(--first-color-alt);
}

/* about  */

.about-img {
  width: 200px;
  border: 0.5rem;
  justify-self: center;
  align-items: center;
  /* filter: drop-shadow(2px 2px 2px var(--first-color-lighter)); - Replaced with dynamic shadow */
  box-shadow: 0 4px 12px var(--shadow-color);
  transition: 0.3s;
  border-radius: 10%;
}

.about-img:hover {
  /* filter: drop-shadow(4px 4px 4px var(--first-color-lighter)); */
  box-shadow: 0 6px 16px var(--shadow-color);
}

.about-description {
  text-align: center;
  margin-bottom: var(--margin-bottom-0-2-5);
}

.about-info {
  display: flex;
  justify-content: space-evenly;
  margin-bottom: var(--margin-bottom-0-2-5);
}

.about-info-title {
  font-size: var(--h2-font-size);
  font-weight: var(--font-semi-bold);
  color: var(--first-color);
}

.about-info-name {
  font-size: var(--smaller-font-size);
}

.about-info-title,
.about-info-name {
  display: block;
  text-align: center;
}

.about-buttons {
  display: flex;
  justify-content: center;
}

/* skills  */
.skills-content {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.skills-name {
  padding: 0.8rem 1.25rem;
  font-size: var(--small-font-size);
  background: var(--first-color);
  border-radius: 5px;
  font-weight: 600;
  color: var(--container-color);
  transition: 0.3s ease;
  box-shadow: 0 2px 4px var(--shadow-color);
}

.skills-name:hover {
  background-color: var(--first-color-alt);
  box-shadow: 0 4px 8px var(--shadow-color);
}

/* qualifi  */

.qualification-tabs {
  display: flex;
  justify-content: space-evenly;
  margin-bottom: var(--margin-bottom-0-2);
}

.qualification-button {
  font-size: var(--small-font-size);
  font-weight: var(--font-medium);
  cursor: pointer;
  color: hsl(var(--hue-color), 8%, 45%);
}

.qualification-button:hover {
  color: var(--first-color);
}

.qualification-icon {
  font-size: 1.25rem;
  margin-right: var(--margin-bottom-0-25);
}

.qualification-data {
  display: grid;
  grid-template-columns: 1fr max-content 1fr;
  column-gap: 1.5rem;
}

.qualification-title {
  font-size: var(--normal-font-size);
  font-weight: var(--font-medium);
}

.qualification-subtitle {
  display: inline-block;
  font-size: var(--small-font-size);
  margin-bottom: var(--margin-bottom-0-1);
}

.qualification-date {
  font-size: var(--smaller-font-size);
  color: var(--text-color-light);
}

.qualification-round {
  display: inline-block;
  width: 13px;
  height: 13px;
  background-color: var(--first-color);
  border-radius: 50%;
}

.qualification-line {
  display: block;
  width: 1px;
  height: 100%;
  background-color: var(--first-color);
  transform: translate(6px, -7px);
}

.qualification [data-content] {
  display: none;
}

.qualification-active[data-content] {
  display: block;
}

.qualification-button.qualification-active {
  color: var(--first-color);
}

/* services  */
.services-container {
  gap: 1.5rem;
  grid-template-columns: repeat(2, 1fr);
}

.services-content {
  position: relative;
  background-color: var(--container-color);
  padding: 3.5rem 0.5rem 1.25rem 1.5rem;
  border-radius: 0.25rem;
  box-shadow: 0 2px 4px var(--shadow-color);
  transition: all 0.3s ease;
  cursor: pointer;
  /* Interaction hint */
}

.services-content:hover {
  box-shadow: 0 8px 20px var(--shadow-color);
  transform: translateY(-8px);
}

.services-icon {
  display: block;
  font-size: 1.5rem;
  color: var(--first-color);
  margin-bottom: var(--margin-bottom-0-1);
}

.services-title {
  font-size: var(--h3-font-size);
  margin-bottom: var(--margin-bottom-0-1);
  font-weight: var(--font-medium);
}

.services-button {
  cursor: pointer;
  font-size: var(--small-font-size);
}

.services-button:hover .button-icon {
  transform: translateX(0.25rem);
}

.services-box {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  right: 0;
  background-color: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 1rem;
  z-index: var(--z-model);
  opacity: 0;
  visibility: hidden;
  transition: all 0.4s ease;
}

.services-box.active-box {
  opacity: 1;
  visibility: visible;
}

.services-box-content {
  position: relative;
  background-color: var(--container-color);
  padding: 1.5rem;
  border-radius: 0.5rem;
  box-shadow: 0 4px 16px var(--shadow-color);
  transform: scale(0.8);
  transition: transform 0.4s ease;
}

.services-box.active-box .services-box-content {
  transform: scale(1);
}

.services-box-services {
  row-gap: 1rem;
}

.services-box-list {
  display: flex;
}

.services-box-title {
  font-size: var(--h3-font-size);
  font-weight: var(--font-medium);
  margin-bottom: var(--margin-bottom-0-1-5);
}

.services-box-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  font-size: 1.5rem;
  color: var(--first-color);
  cursor: pointer;
}

.services-list-icon {
  color: var(--first-color);
  margin-top: 0.25rem;
  margin-right: var(--margin-bottom-0-25);
}

.active-box {
  opacity: 1;
  visibility: visible;
}

/* ==================== SCROLL ANIMATIONS ==================== */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s cubic-bezier(0.5, 0, 0, 1), transform 0.8s cubic-bezier(0.5, 0, 0, 1);
  will-change: opacity, transform;
}

.reveal-active {
  opacity: 1;
  transform: translateY(0);
}

.reveal-left {
  transform: translateX(-30px);
}

.reveal-right {
  transform: translateX(30px);
}

/* Stagger delays */
.reveal-delay-100 {
  transition-delay: 0.1s;
}

.reveal-delay-200 {
  transition-delay: 0.2s;
}

.reveal-delay-300 {
  transition-delay: 0.3s;
}

.reveal-delay-400 {
  transition-delay: 0.4s;
}

/* projects  */
.portfolio-container {
  overflow: hidden;
  padding: 0.25rem 0 4.25rem;
  overscroll-behavior: auto;
  touch-action: pan-y;
  position: relative;
}

.certificate-container {
  overflow: hidden;
  padding: 0.25rem 0 3.75rem;
  overscroll-behavior: auto;
  touch-action: pan-y;
  position: relative;
}

.portfolio-container .swiper-wrapper,
.certificate-container .swiper-wrapper {
  align-items: stretch;
  overflow-y: visible;
  touch-action: pan-y;
}

.portfolio-container .swiper-slide,
.certificate-container .swiper-slide {
  height: auto;
  touch-action: pan-y;
}

.portfolio-content {
  padding: 0 1.5rem;
}

.portfolio-img {
  width: 265px;
  border-radius: 0.5rem;
  justify-self: center;
  box-shadow: 0 5px 15px var(--shadow-color);
  transition: 0.3s;
}

.portfolio-img:hover {
  box-shadow: 0 8px 24px var(--shadow-color);
  transform: translateY(-5px);
}

.portfolio-title {
  font-size: var(--h3-font-size);
  margin-bottom: var(--margin-bottom-0-5);
}

.portfolio-description {
  margin-bottom: var(--margin-bottom-0-75);
}

.portfolio-button:hover .button-icon {
  transform: translateX(0.25rem);
}

/* projects  */

.swiper-button-prev::after,
.swiper-button-next::after {
  content: "";
}

.swiper-icon {
  font-size: 1.25rem;
  color: var(--first-color);
}

.swiper-container-horizontal>.swiper-pagination-bullets {
  bottom: -2.5rem;
}

.swiper-angles {
  pointer-events: none;
}

.portfolio-angles,
.certificate-angles {
  position: absolute;
  inset: 0;
  z-index: 4;
}

.portfolio-button-prev,
.portfolio-button-next,
.certificate-button-prev,
.certificate-button-next {
  top: calc(50% - 2rem);
  margin: 0;
}

.portfolio-button-prev,
.certificate-button-prev {
  left: clamp(0.5rem, 2vw, 1.25rem);
}

.portfolio-button-next,
.certificate-button-next {
  right: clamp(0.5rem, 2vw, 1.25rem);
}

.project {
  text-align: center;
}

.project-title {
  font-size: var(--h2-font-size);
  margin-bottom: var(--margin-bottom-0-75);
}

.project-description {
  margin-bottom: var(--margin-bottom-0-1-5);
}

.project-title,
.project-description {
  color: #fff;
}

.project-img {
  width: 232px;
  justify-self: center;
}

/* certificate  */

.certificate-data {
  text-align: center;
}

.certificate-content {
  display: flex;
  align-items: stretch;
  justify-content: center;
  min-height: 260px;
  padding: 1.25rem;
  border-radius: 1rem;
}

.certificate-data {
  width: 100%;
  display: grid;
  place-items: center;
}

.certificate-header {
  width: 100%;
  display: grid;
  justify-items: center;
  gap: 1rem;
}

.certificate-img {
  width: 220px;
  max-height: 170px;
  border-radius: 3%;
  /* filter: drop-shadow(3px 2px 2px var(--first-color-lighter)); */
  box-shadow: 0 4px 8px var(--shadow-color);
  transition: 0.3s;
  object-fit: contain;
  background: var(--container-color);
}

.certificate-img:hover {
  box-shadow: 0 8px 16px var(--shadow-color);
  transform: translateY(-3px);
}

.certificate-name {
  font-size: var(--h3-font-size);
  font-weight: var(--font-medium);
}

.certificate-client {
  font-size: var(--small-font-size);
  color: var(--text-color-light);
}

.swiper-container .swiper-pagination-certificate {
  bottom: 0;
}

/* contact section  */
.contact-container {
  row-gap: 3rem;
}

.contact-info {
  display: flex;
  margin-bottom: var(--margin-bottom-0-1);
  align-items: center;
}

.contact-icon {
  font-size: 1.5rem;
  color: var(--first-color);
  margin-right: var(--margin-bottom-0-75);

}

.contact-title {
  font-size: var(--h3-font-size);
  font-weight: var(--font-medium);
}

.contact-subtitle {
  font-size: var(--small-font-size);
  color: var(--text-color-light);
}

/* footer   */
.footer {
  padding-top: 2rem;
  color: var(--container-color);
}

.footer-container {
  row-gap: 3.5rem;
}

.footer-bg {
  background-color: var(--first-color);
  padding: 2rem 0 3rem;
}

.footer-title {
  font-size: var(--h1-font-size);
  margin-bottom: var(--margin-bottom-0-25);
}

.footer-subtitle {
  font-size: var(--small-font-size);
}

.footer-links {
  display: flex;
  flex-direction: column;
  row-gap: 1.5rem;
}

.footer-link:hover {
  color: var(--first-color-lighter);
}

body.dark-theme .footer-link:hover {
  color: var(--first-color-second);
  text-decoration: underline;
  text-decoration-color: rgba(47, 111, 115, 0.85);
  text-decoration-thickness: 2px;
  text-underline-offset: 0.35rem;
}

.footer-social {
  font-size: 1.25rem;
  margin-right: var(--margin-bottom-0-1-5);
}

.footer-copy {
  font-size: var(--smaller-font-size);
  text-align: center;
  color: var(--container-color);
  margin-top: var(--margin-bottom-0-3);
}

.footer-title,
.footer-subtitle,
.footer-link,
.footer-social {
  color: var(--container-color);
  ;
}

.scrollup {
  position: fixed;
  right: 1rem;
  bottom: -20%;
  background-color: var(--first-color);
  opacity: 0.8;
  padding: 0.2rem 0.4rem;
  border-radius: 0.4rem;
  z-index: var(--z-tooltip);
  transition: 0.4s;
  box-shadow: 0 4px 8px var(--shadow-color);
}

.scrollup:hover {
  background-color: var(--first-color-alt);
  box-shadow: 0 6px 12px var(--shadow-color);
  transform: translateY(-0.25rem);
}

.scroll-up-icon {
  font-size: 1.25rem;
  color: var(--container-color);
}

.show-scroll {
  bottom: 5rem;
}

/* scroll thumb and bar  */
::-webkit-scrollbar {
  width: 0.6rem;
  background-color: var(--scroll-bar-color);
  border-radius: 0.5rem;
}

::-webkit-scrollbar-thumb {
  background-color: var(--scroll-thumb-color);
  border-radius: 0.5rem;
}

/* media queries  */
/* small devices */
@media screen and (max-width: 350px) {
  .container {
    margin-left: var(--margin-bottom-0-1);
    margin-right: var(--margin-bottom-0-1);
  }

  .nav-menu {
    padding: 2rem 0.25rem 4rem;
  }

  .nav-list {
    column-gap: 0;
  }

  .home-content {
    grid-template-columns: 0.25fr 3fr;
  }

  .home-blob {
    width: 180px;
  }

  .skills-name {
    font-size: var(--small-font-size);
  }

  .qualification-data {
    gap: 0.5rem;
  }

  .services-container {
    grid-template-columns: max-content;
    justify-content: center;
  }

  .services-content {
    padding-right: 3.5rem;
  }

  .services-box {
    padding: 0 0.5rem;
  }

  .project-img {
    width: 200px;
  }

  .certificate-data,
  .certificate-header {
    flex-direction: column;
    align-items: center;
  }

  .certificate-img {
    margin-right: 0;
    margin-bottom: var(--margin-bottom-0-25);
  }

  .certificate-data,
  .certificate-description {
    text-align: center;
  }
}

/* medium devices */
@media screen and (min-width: 568px) {
  .home-content {
    grid-template-columns: max-content 1fr 1fr;
  }

  .home-data {
    grid-column: initial;
  }

  .home-blob-img {
    order: 1;
    justify-self: center;
  }

  .about-container,
  .skills-container,
  .portfolio-content,
  .contact-container,
  .footer-container {
    grid-template-columns: repeat(2, 1fr);
  }

  .qualification-section {
    display: grid;
    grid-template-columns: 0.6fr;
    justify-content: center;
  }
}

@media screen and (min-width: 768px) {
  .container {
    margin-left: auto;
    margin-right: auto;
  }

  html,
  body {
    margin: 0;
    overflow-x: hidden;
  }

  .section {
    padding: 6rem 0 2rem;
  }

  .section-subtitle {
    margin-bottom: 4rem;
  }

  .header {
    top: 0;
    bottom: initial;
  }

  .header,
  .main,
  .footer-container {
    padding: 0 1rem;
  }

  .nav {
    height: calc(var(--header-height) + 1.5rem);
    column-gap: 1rem;
  }

  .nav-icon,
  .nav-toggle,
  .nav-close {
    display: none !important;
  }

  .nav-list {
    display: flex;
    column-gap: 2rem;
  }

  .nav-menu {
    margin-left: auto;
  }

  .change-theme {
    margin: 0;
  }

  .home-content {
    padding-top: 5.5rem;
    column-gap: 2rem;
  }

  .home-blob {
    width: 270px;
  }

  .home-scroll {
    display: block;
  }

  .home-scroll-button {
    margin-left: 3rem;
  }

  .about-container {
    column-gap: 5rem;
  }

  .about-img {
    width: 350px;
  }

  .about-description {
    text-align: initial;
  }

  .about-info {
    justify-content: space-between;
  }

  .about-buttons {
    justify-content: initial;
  }

  .qualification-tabs {
    justify-content: center;
  }

  .qualification-button {
    margin: 0 var(--margin-bottom-0-1);
  }

  .qualification {
    grid-template-columns: 0.5fr;
  }

  .services-container {
    grid-template-columns: repeat(3, 218px);
    justify-content: center;
  }

  .services-icon {
    font-size: 2rem;
  }

  .services-content {
    padding: 6rem 0 2rem 2.5rem;
  }

  .services-box-content {
    width: 450px;
  }

  .portfolio-img {
    width: 320px;
  }

  .portfolio-content {
    align-items: center;
  }

  .project {
    text-align: inherit;
  }

  .footer-container {
    grid-template-columns: repeat(3, 1fr);
  }

  .footer-bg {
    padding: 3rem 0 3.5rem;
  }

  .footer-links {
    flex-direction: row;
    column-gap: 2rem;
  }

  .footer-social {
    justify-self: flex-end;
  }

  .footer-copy {
    margin-top: 4.5rem;
  }
}

/* large devices */
@media screen and (min-width: 1024px) {

  .header,
  .main,
  .footer-container {
    padding: 0;
  }

  .home-blob {
    width: 320px;
  }

  .home-social {
    transform: translateX(-6rem);
  }

  .services-container {
    grid-template-columns: repeat(3, 238px);
  }

  .portfolio-content {
    column-gap: 5rem;
  }

  .swiper-icon {
    font-size: 3.5rem;
  }

  .swiper-button-prev {
    left: -3.5rem;
  }

  .swiper-button-next {
    right: -3.5rem;
  }

  .swiper-container-horizontal>.swiper-pagination-bullets {
    bottom: -4.5rem;
  }
}

/* Typewriter Effect Cursor */
.cursor {
  display: inline-block;
  background-color: var(--title-color);
  width: 3px;
  animation: blink 1s infinite;
}

.cursor.typing {
  animation: none;
}

@keyframes blink {
  0% {
    background-color: var(--title-color);
  }

  49% {
    background-color: var(--title-color);
  }

  50% {
    background-color: transparent;
  }

  99% {
    background-color: transparent;
  }

  100% {
    background-color: var(--title-color);
  }
}

/* ==================== LAZY LOADING STYLES ==================== */
/* Modern lazy loading with blur-up effect and smooth transitions */

/* Base state for lazy images - blurred placeholder */
img[data-src] {
  filter: blur(20px);
  opacity: 0.6;
  transition: filter 0.6s ease, opacity 0.6s ease, transform 0.3s ease;
  background: linear-gradient(110deg,
      var(--input-color) 8%,
      var(--first-color-lighter) 18%,
      var(--input-color) 33%);
  background-size: 200% 100%;
  animation: shimmer 1.5s linear infinite;
}

/* Loading state - slightly pulsing */
img.lazy-loading {
  filter: blur(15px);
  opacity: 0.7;
  animation: pulse 1.5s ease-in-out infinite, shimmer 1.5s linear infinite;
}

/* Loaded state - sharp and visible */
img.lazy-loaded {
  filter: blur(0);
  opacity: 1;
  background: none;
  animation: fadeIn 0.5s ease-in;
}

/* Error state - maintain opacity but add subtle indication */
img.lazy-error {
  filter: blur(0);
  opacity: 0.5;
  background: var(--input-color);
  border: 2px dashed var(--text-color-light);
}

/* Shimmer animation for skeleton loading effect */
@keyframes shimmer {
  0% {
    background-position: -200% 0;
  }

  100% {
    background-position: 200% 0;
  }
}

/* Pulse animation for loading state */
@keyframes pulse {

  0%,
  100% {
    opacity: 0.7;
  }

  50% {
    opacity: 0.85;
  }
}

/* Fade in animation for loaded images */
@keyframes fadeIn {
  from {
    opacity: 0.6;
  }

  to {
    opacity: 1;
  }
}

/* Specific optimizations for certificate and portfolio images */
.certificate-img[data-src],
.portfolio-img[data-src] {
  min-height: 200px;
  /* Prevent layout shift */
  object-fit: cover;
}

/* Hover effect for loaded lazy images */
img.lazy-loaded:hover {
  transform: scale(1.02);
  transition: transform 0.3s ease;
}

/* Reduce motion for accessibility */
@media (prefers-reduced-motion: reduce) {

  img[data-src],
  img.lazy-loading,
  img.lazy-loaded {
    animation: none;
    transition: opacity 0.3s ease;
  }

  img.lazy-loaded:hover {
    transform: none;
  }
}

/* Loading spinner overlay (optional enhancement) */
img.lazy-loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 30px;
  height: 30px;
  margin: -15px 0 0 -15px;
  border: 3px solid var(--first-color-lighter);
  border-top-color: var(--first-color);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* ==================== MODERN SPLASH SCREEN & 3D TRANSITION ==================== */
/* Prevent scroll while splash is active */
body.splash-active {
  overflow: hidden;
  background-color: #0B0B0C;
}

body.dark-theme.splash-active {
  background-color: #0B0B0C;
}

body.splash-active .abstract-background {
  opacity: 0;
  visibility: hidden;
}

body.splash-active .abstract-background::before,
body.splash-active .abstract-background::after,
body.splash-active .binary-row,
body.splash-active .binary-orbit,
body.splash-active .binary-scanline {
  animation-play-state: paused;
}

.main,
.header,
#scroll-progress {
  transition:
    transform 0.68s var(--motion-ease),
    opacity 0.56s ease;
  transform-origin: center top;
}

body.splash-active .main,
body.splash-active .header,
body.splash-active #scroll-progress {
  transform: translate3d(0, 1.35rem, 0) scale(0.97);
  opacity: 0;
  pointer-events: none;
}

body.splash-active .main,
body.splash-active .header,
body.splash-exiting .main,
body.splash-exiting .header {
  will-change: transform, opacity;
}

#modern-splash {
  --splash-bg: #f8f7f2;
  --splash-ink: #111111;
  --splash-muted: rgba(17, 17, 17, 0.58);
  --splash-line: rgba(17, 17, 17, 0.1);
  --splash-panel: rgba(255, 255, 255, 0.72);
  --splash-glow-teal: rgba(47, 111, 115, 0.24);
  --splash-glow-warm: rgba(200, 164, 93, 0.28);
  position: fixed;
  inset: 0;
  background:
    radial-gradient(circle at 50% 42%, var(--splash-panel), transparent 0 15rem, transparent 24rem),
    radial-gradient(circle at 18% 22%, var(--splash-glow-teal), transparent 22rem),
    radial-gradient(circle at 82% 76%, var(--splash-glow-warm), transparent 24rem),
    linear-gradient(135deg, rgba(17, 17, 17, 0.04) 0 1px, transparent 1px 100%),
    var(--splash-bg);
  background-size: auto, auto, auto, 4.75rem 4.75rem, auto;
  z-index: 10001;
  display: flex;
  justify-content: center;
  align-items: center;
  overflow: hidden;
  transition: transform 0.8s cubic-bezier(0.77, 0, 0.175, 1),
    opacity 0.8s cubic-bezier(0.77, 0, 0.175, 1),
    visibility 0.8s;
  transform-origin: center center;
  isolation: isolate;
  contain: layout paint style;
  will-change: transform, opacity;
}

body.dark-theme #modern-splash {
  --splash-bg: #0B0B0C;
  --splash-ink: #FAFAFA;
  --splash-muted: rgba(250, 250, 250, 0.62);
  --splash-line: rgba(250, 250, 250, 0.12);
  --splash-panel: rgba(18, 18, 18, 0.78);
  --splash-glow-teal: rgba(114, 199, 195, 0.2);
  --splash-glow-warm: rgba(215, 181, 109, 0.18);
}

#modern-splash::before {
  content: "";
  position: absolute;
  inset: -22%;
  z-index: -2;
  background:
    conic-gradient(from 135deg at 50% 50%,
      transparent 0 18%,
      var(--splash-line) 21% 22%,
      transparent 25% 50%,
      var(--splash-line) 53% 54%,
      transparent 58% 100%);
  opacity: 0.46;
  transform: rotate(12deg);
}

#modern-splash::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.08), transparent),
    radial-gradient(circle at center, transparent 0 13rem, rgba(11, 11, 12, 0.04) 27rem);
  opacity: 0.28;
  transform: skewX(-8deg);
}

/* Zoom Out Effect for Splash Screen Itself */
#modern-splash.zoom-3d-out {
  transform: translate3d(0, -0.45rem, 0) scale(1.08);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

#modern-splash.zoom-3d-out::before,
#modern-splash.zoom-3d-out::after,
#modern-splash.zoom-3d-out .splash-atmosphere span,
#modern-splash.zoom-3d-out .splash-logo::before,
#modern-splash.zoom-3d-out .splash-logo::after,
#modern-splash.zoom-3d-out .yinyang-symbol,
#modern-splash.zoom-3d-out .splash-initials {
  animation-play-state: paused;
}

.splash-content {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.15rem;
  width: min(88vw, 460px);
  padding: clamp(1.5rem, 5vw, 2.5rem);
  text-align: center;
  transition:
    transform 0.5s var(--motion-ease),
    opacity 0.42s ease;
}

#modern-splash.zoom-3d-out .splash-content {
  transform: translate3d(0, -0.65rem, 0) scale(0.98);
  opacity: 0;
}

.splash-atmosphere,
.splash-atmosphere span {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.splash-atmosphere {
  z-index: 0;
  opacity: 0.88;
}

.splash-atmosphere span {
  width: clamp(9rem, 24vw, 18rem);
  aspect-ratio: 1;
  border: 1px solid var(--splash-line);
  border-radius: 50%;
  box-shadow: inset 0 0 2rem var(--splash-glow-teal);
}

.splash-atmosphere span:nth-child(1) {
  top: 12%;
  left: 12%;
}

.splash-atmosphere span:nth-child(2) {
  right: 10%;
  bottom: 12%;
  width: clamp(7rem, 17vw, 13rem);
  box-shadow: inset 0 0 1.85rem var(--splash-glow-warm);
}

.splash-atmosphere span:nth-child(3) {
  top: 22%;
  right: 23%;
  width: clamp(4.5rem, 12vw, 8rem);
  opacity: 0.62;
}

.splash-kicker {
  color: var(--splash-muted);
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: 0.24em;
  line-height: 1;
  text-transform: uppercase;
  opacity: 0;
  transform: translateY(8px);
  animation: fade-up 0.6s var(--motion-ease) 0.1s forwards;
}

.splash-logo {
  position: relative;
  width: 126px;
  height: 126px;
  display: flex;
  justify-content: center;
  align-items: center;
  margin-top: 0.25rem;
}

.splash-logo::before,
.splash-logo::after {
  content: "";
  position: absolute;
  inset: -14px;
  border-radius: 50%;
  border: 1px solid var(--splash-line);
}

.splash-logo::before {
  border-top-color: var(--accent-color);
  border-right-color: transparent;
  animation: splash-ring-spin 4.8s linear infinite;
}

.splash-logo::after {
  inset: -25px;
  border-color: transparent;
  border-left-color: var(--accent-warm);
  border-bottom-color: var(--splash-line);
  opacity: 0.72;
  animation: splash-ring-spin 6.2s linear infinite reverse;
}

/* Yin-Yang Symbol Design */
.yinyang-symbol {
  position: absolute;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: conic-gradient(#FAFAFA 0deg 180deg,
      #0B0B0C 180deg 360deg);
  display: flex;
  align-items: center;
  animation: spin-yinyang 3.2s cubic-bezier(0.45, 0, 0.15, 1) infinite;
  box-shadow:
    0 24px 70px rgba(0, 0, 0, 0.2),
    0 0 0 1px var(--splash-line);
}

.yinyang-symbol::before {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 50%;
  height: 50%;
  background-color: #FAFAFA;
  border-radius: 50%;
  box-shadow: inset 0 0 0 12px #0B0B0C;
  /* Inner dot */
}

.yinyang-symbol::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 50%;
  height: 50%;
  background-color: #0B0B0C;
  border-radius: 50%;
  box-shadow: inset 0 0 0 12px #FAFAFA;
  /* Inner dot */
}

/* Invert Yin Yang */
body.dark-theme .yinyang-symbol {
  background: conic-gradient(#0B0B0C 0deg 180deg,
      #FAFAFA 180deg 360deg);
  box-shadow:
    0 24px 70px rgba(0, 0, 0, 0.48),
    0 0 0 1px var(--splash-line),
    0 0 46px rgba(114, 199, 195, 0.08);
}

body.dark-theme .yinyang-symbol::before {
  background-color: #0B0B0C;
  box-shadow: inset 0 0 0 12px #FAFAFA;
}

body.dark-theme .yinyang-symbol::after {
  background-color: #FAFAFA;
  box-shadow: inset 0 0 0 12px #0B0B0C;
}

.splash-initials {
  position: relative;
  z-index: 2;
  color: #FAFAFA;
  font-size: 2rem;
  font-weight: 700;
  font-family: 'Poppins', sans-serif;
  text-shadow: 0 0 10px rgba(0, 0, 0, 0.5);
  animation: logo-pulse 2s ease-in-out infinite;
  /* Mix-blend to interact with Yin Yang */
  mix-blend-mode: difference;
}

.splash-text {
  font-size: clamp(2.15rem, 5vw, 3rem);
  font-weight: 600;
  font-family: 'Poppins', sans-serif;
  color: var(--splash-ink);
  display: flex;
  gap: 0.02em;
  line-height: 1;
  letter-spacing: 0;
  margin-top: 0.35rem;
}

.splash-description {
  max-width: 24rem;
  font-size: clamp(0.86rem, 2vw, 1rem);
  color: var(--splash-muted);
  font-weight: 500;
  opacity: 0;
  transform: translateY(10px);
  animation: fade-up 0.7s var(--motion-ease) 0.42s forwards;
  margin-top: -0.25rem;
  text-align: center;
  line-height: 1.7;
}

.splash-text span {
  display: inline-block;
  opacity: 0;
  transform: translateY(20px);
  animation: text-reveal 0.55s var(--motion-ease) forwards;
  animation-delay: calc(0.055s * var(--i));
}

.splash-loader {
  width: min(68vw, 220px);
  height: 5px;
  background-color: var(--splash-line);
  border-radius: 999px;
  overflow: hidden;
  margin-top: 1rem;
  position: relative;
  opacity: 0;
  animation: fade-in-loader 0.45s ease 0.62s forwards;
  box-shadow: 0 14px 34px rgba(0, 0, 0, 0.12);
}

.loader-progress {
  width: 0%;
  height: 100%;
  background: linear-gradient(90deg, var(--accent-color), var(--accent-warm), var(--splash-ink));
  border-radius: inherit;
  animation: progress-fill 1.8s var(--motion-ease) forwards;
  box-shadow: 0 0 18px var(--splash-glow-teal);
}

/* Animations */
@keyframes spin-yinyang {
  0% {
    transform: rotate(0deg);
  }

  100% {
    transform: rotate(360deg);
  }
}

@keyframes logo-pulse {

  0%,
  100% {
    transform: scale(1);
  }

  50% {
    transform: scale(1.1);
  }
}

@keyframes text-reveal {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fade-up {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fade-in-loader {
  to {
    opacity: 1;
  }
}

@keyframes progress-fill {
  0% {
    width: 0%;
  }

  40% {
    width: 40%;
  }

  70% {
    width: 80%;
  }

  100% {
    width: 100%;
  }
}

/* Splash Screen Mobile Responsiveness */
@media screen and (max-width: 568px) {
  .splash-content {
    gap: 0.95rem;
    padding: 1.25rem;
  }

  .splash-kicker {
    font-size: 0.68rem;
    letter-spacing: 0.2em;
  }

  .splash-logo {
    width: 88px;
    height: 88px;
  }

  .splash-logo::before {
    inset: -10px;
  }

  .splash-logo::after {
    inset: -18px;
  }

  .splash-initials {
    font-size: 1.5rem;
  }

  .splash-text {
    font-size: 1.9rem;
  }

  .splash-description {
    font-size: 0.875rem;
    line-height: 1.6;
  }

  .splash-loader {
    width: 158px;
    height: 4px;
    margin-top: 0.65rem;
  }

  .splash-atmosphere {
    opacity: 0.54;
  }
}

@media screen and (max-width: 350px) {
  .splash-logo {
    width: 72px;
    height: 72px;
  }

  .splash-initials {
    font-size: 1.2rem;
  }

  .splash-text {
    font-size: 1.55rem;
  }

  .splash-loader {
    width: 132px;
  }
}

/* Featured Portfolio Grid */
.portfolio-feature-card {
  background-color: var(--container-color);
  padding: 2rem;
  border-radius: 1rem;
  box-shadow: 0 4px 16px var(--shadow-color);
  grid-template-columns: 1fr !important;
  text-align: center;
  gap: 1.5rem;
}

.portfolio-feature-img {
  width: 100%;
  max-width: 500px;
  margin: 0 auto;
}

.portfolio-feature-card .portfolio-data {
  text-align: center;
}

.portfolio-feature-card .portfolio-description {
  text-align: justify;
  text-justify: inter-word;
  /* Optional: improves spacing */
}

/* Live Project Preview Iframe */
.portfolio-feature-iframe-wrapper {
  width: 100%;
  max-width: 100%;
  height: 600px;
  /* Increased height for better visibility */
  margin: 0 auto;
  border-radius: 1rem;
  box-shadow: 0 4px 8px var(--shadow-color);
  overflow: hidden;
  position: relative;
}

.portfolio-feature-iframe {
  /* Default (Mobile) Zoom-out */
  width: 133.33%;
  height: 133.33%;
  border: none;
  transform: scale(0.75);
  transform-origin: 0 0;
}

@media screen and (min-width: 1024px) {
  .portfolio-feature-iframe-wrapper {
    height: 400px;
    /* Restore desktop height */
  }

  /* Scale down desktop view for larger screens */
  .portfolio-feature-iframe {
    width: 200%;
    height: 200%;
    transform: scale(0.5);
    transform-origin: 0 0;
  }
}

@keyframes splash-ring-spin {
  to {
    transform: rotate(360deg);
  }
}

@keyframes splash-orbit {
  to {
    transform: rotate(360deg);
  }
}

@keyframes splash-scan {
  0%,
  100% {
    transform: translateX(-32%) skewX(-8deg);
    opacity: 0;
  }

  42%,
  64% {
    opacity: 0.58;
  }

  70% {
    transform: translateX(32%) skewX(-8deg);
    opacity: 0;
  }
}

@keyframes splash-float {
  to {
    transform: translate3d(1.35rem, -1.1rem, 0) scale(1.05);
  }
}

/* ==================== MODERN CLEAN MOTION SYSTEM ==================== */
:root {
  --accent-color: #2f6f73;
  --accent-warm: #c8a45d;
  --surface-border: rgba(17, 17, 17, 0.08);
  --surface-tint: rgba(255, 255, 255, 0.78);
  --motion-ease: cubic-bezier(0.22, 1, 0.36, 1);
  --motion-spring: cubic-bezier(0.18, 0.89, 0.32, 1.18);
}

body.dark-theme {
  --accent-color: #72c7c3;
  --accent-warm: #d7b56d;
  --surface-border: rgba(255, 255, 255, 0.1);
  --surface-tint: rgba(18, 18, 18, 0.78);
}

body {
  background:
    linear-gradient(135deg, rgba(47, 111, 115, 0.045), transparent 28rem),
    linear-gradient(315deg, rgba(200, 164, 93, 0.055), transparent 32rem),
    var(--body-color);
}

.abstract-background {
  --binary-ink: rgba(15, 15, 15, 0.32);
  --binary-ink-soft: rgba(47, 111, 115, 0.28);
  --binary-glow: rgba(200, 164, 93, 0.2);
  --binary-panel: rgba(255, 255, 255, 0.22);
  position: fixed;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  z-index: 0;
  opacity: 0.9;
  contain: paint;
  background:
    radial-gradient(circle at 78% 16%, var(--binary-glow), transparent 24rem),
    radial-gradient(circle at 12% 78%, var(--binary-ink-soft), transparent 28rem),
    linear-gradient(120deg, transparent 0 42%, rgba(47, 111, 115, 0.045) 42% 43%, transparent 43% 100%);
}

body.dark-theme .abstract-background {
  --binary-ink: rgba(250, 250, 250, 0.34);
  --binary-ink-soft: rgba(114, 199, 195, 0.28);
  --binary-glow: rgba(215, 181, 109, 0.18);
  --binary-panel: rgba(11, 11, 12, 0.16);
}

.abstract-background::before,
.abstract-background::after,
.binary-orbit,
.binary-scanline {
  content: "";
  position: absolute;
  pointer-events: none;
  will-change: transform, opacity, background-position;
}

.abstract-background::before {
  inset: -12%;
  opacity: 0.34;
  background-image:
    linear-gradient(var(--binary-ink) 1px, transparent 1px),
    linear-gradient(90deg, var(--binary-ink) 1px, transparent 1px);
  background-size: 4.25rem 4.25rem;
  transform: rotate(-10deg) scale(1.08);
  mask-image: linear-gradient(115deg, transparent 0 12%, #000 34% 66%, transparent 88% 100%);
  animation: binary-grid-pan 26s linear infinite;
}

.abstract-background::after {
  width: min(72vw, 54rem);
  height: min(72vw, 54rem);
  right: -18rem;
  top: -18rem;
  border-radius: 50%;
  background:
    repeating-radial-gradient(
      circle,
      transparent 0 1.2rem,
      var(--binary-ink) 1.24rem 1.3rem,
      transparent 1.34rem 2.5rem
    );
  opacity: 0.55;
  animation: binary-orbit-drift 24s var(--motion-ease) infinite alternate;
}

.binary-streams {
  position: absolute;
  inset: -8% -4%;
  display: grid;
  grid-auto-rows: minmax(1.35rem, 1fr);
  align-content: space-between;
  transform: rotate(-8deg) scale(1.08);
  opacity: 0.86;
  mask-image: radial-gradient(ellipse at 52% 52%, #000 0 56%, transparent 82%);
  mix-blend-mode: multiply;
}

body.dark-theme .binary-streams {
  mix-blend-mode: screen;
}

.binary-row {
  width: max-content;
  min-width: 125vw;
  color: var(--binary-ink);
  font: 600 clamp(0.72rem, 1.15vw, 0.98rem) / 1.2 "Courier New", monospace;
  letter-spacing: 0.42em;
  white-space: pre;
  text-transform: uppercase;
  opacity: var(--binary-opacity, 0.34);
  transform: translate3d(var(--binary-offset, 0), 0, 0);
  text-shadow: 0 0 1.4rem var(--binary-ink-soft);
  animation: binary-row-drift var(--binary-speed, 22s) linear infinite alternate;
  transition: opacity 0.65s ease, color 0.65s ease;
}

.binary-row:nth-child(3n) {
  color: var(--binary-ink-soft);
}

.binary-row:nth-child(5n) {
  color: var(--binary-glow);
}

.binary-orbit {
  border: 1px solid var(--binary-ink);
  border-radius: 50%;
  box-shadow: inset 0 0 2rem var(--binary-panel), 0 0 3rem var(--binary-ink-soft);
  opacity: 0.45;
}

.binary-orbit-1 {
  width: min(52vw, 38rem);
  aspect-ratio: 1;
  left: -14rem;
  top: 10vh;
  animation: binary-orbit-drift 18s var(--motion-ease) infinite alternate-reverse;
}

.binary-orbit-2 {
  width: min(38vw, 28rem);
  aspect-ratio: 1;
  right: 9vw;
  bottom: -10rem;
  animation: binary-orbit-drift 22s var(--motion-ease) infinite alternate;
}

.binary-scanline {
  inset: -25% auto -25% 48%;
  width: 11rem;
  background: linear-gradient(90deg, transparent, var(--binary-ink-soft), transparent);
  opacity: 0.28;
  transform: rotate(18deg) translateX(-50%);
  filter: blur(0.4px);
  animation: binary-scan-sweep 9s ease-in-out infinite;
}

@keyframes binary-grid-pan {
  to {
    background-position: 4.25rem 4.25rem;
  }
}

@keyframes binary-row-drift {
  to {
    transform: translate3d(var(--binary-shift, -6rem), 0, 0);
  }
}

@keyframes binary-orbit-drift {
  from {
    transform: translate3d(0, 0, 0) rotate(0deg) scale(1);
  }

  to {
    transform: translate3d(2.5rem, -1.5rem, 0) rotate(14deg) scale(1.06);
  }
}

@keyframes binary-scan-sweep {
  0%,
  100% {
    transform: rotate(18deg) translateX(-58vw);
    opacity: 0;
  }

  18%,
  72% {
    opacity: 0.28;
  }

  50% {
    transform: rotate(18deg) translateX(52vw);
  }
}

.container {
  width: min(100% - 3rem, 1120px);
  max-width: 1120px;
  margin-left: auto;
  margin-right: auto;
}

.section {
  position: relative;
  overflow: clip;
  padding: 5rem 0;
  isolation: isolate;
  transition:
    transform 0.9s var(--motion-ease),
    opacity 0.9s var(--motion-ease),
    filter 0.9s var(--motion-ease);
}

.section::before {
  content: "";
  position: absolute;
  inset: 1.25rem 0 auto;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--surface-border), transparent);
  transform: scaleX(0);
  transform-origin: left;
  opacity: 0;
  transition: transform 1.1s var(--motion-ease), opacity 0.7s ease;
  z-index: -1;
}

.section::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(100deg, transparent 0 42%, rgba(47, 111, 115, 0.05) 42% 43%, transparent 43% 100%),
    linear-gradient(260deg, transparent 0 55%, rgba(200, 164, 93, 0.05) 55% 56%, transparent 56% 100%);
  opacity: 0;
  transform: translateX(calc(var(--section-direction, -1) * 8%));
  transition: transform 1.1s var(--motion-ease), opacity 0.9s ease;
  pointer-events: none;
  z-index: -2;
}

.section > * {
  position: relative;
  z-index: 1;
}

.section.section-in-view::before {
  opacity: 1;
  transform: scaleX(1);
}

.section.section-in-view::after {
  opacity: 1;
  transform: translateX(0);
}

.section.hidden-left {
  opacity: 0;
  transform: perspective(1400px) translateX(-9vw) translateY(2rem) rotateY(8deg) scale(0.96);
  filter: blur(8px) saturate(0.85);
}

.section.hidden-right {
  opacity: 0;
  transform: perspective(1400px) translateX(9vw) translateY(2rem) rotateY(-8deg) scale(0.96);
  filter: blur(8px) saturate(0.85);
}

.section.hidden-up,
.section.hidden-down {
  opacity: 0;
  filter: blur(8px) saturate(0.85);
}

.section.active-3d {
  opacity: 1;
  transform: perspective(1400px) translateX(0) translateY(0) rotateY(0) scale(1);
  filter: blur(0) saturate(1);
}

.section-title {
  position: relative;
  width: fit-content;
  margin-inline: auto;
  margin-bottom: 0.9rem;
  letter-spacing: 0;
}

.section-title::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -0.45rem;
  width: 3rem;
  height: 3px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--accent-color), var(--accent-warm));
  transform: translateX(-50%) scaleX(0.2);
  opacity: 0.65;
  transition: transform 0.7s var(--motion-ease), opacity 0.7s ease;
}

.section-in-view .section-title::after {
  transform: translateX(-50%) scaleX(1);
  opacity: 1;
}

.certificate.section,
.portfolio.section {
  opacity: 1;
  transform: none;
  filter: none;
  transition: none;
}

.certificate.section.hidden-left,
.certificate.section.hidden-right,
.certificate.section.hidden-up,
.certificate.section.hidden-down,
.portfolio.section.hidden-left,
.portfolio.section.hidden-right,
.portfolio.section.hidden-up,
.portfolio.section.hidden-down,
.certificate.section.active-3d,
.portfolio.section.active-3d {
  opacity: 1;
  transform: none;
  filter: none;
}

.certificate.section::before,
.certificate.section::after,
.portfolio.section::before,
.portfolio.section::after {
  opacity: 0;
  transform: none;
  transition: none;
}

.certificate.section .reveal,
.portfolio.section .reveal,
.certificate.section .reveal-left,
.certificate.section .reveal-right,
.portfolio.section .reveal-left,
.portfolio.section .reveal-right {
  opacity: 1;
  transform: none;
  transition: none;
}

.section-subtitle {
  color: var(--text-color-light);
}

.header {
  background: color-mix(in srgb, var(--body-color) 82%, transparent);
  border-top: 1px solid var(--surface-border);
  backdrop-filter: blur(18px);
}

.scroll-header {
  box-shadow: 0 16px 45px rgba(0, 0, 0, 0.08);
}

.nav-logo,
.nav-link,
.footer-link,
.home-social-icon {
  transition: color 0.3s ease, transform 0.3s var(--motion-spring), opacity 0.3s ease;
}

.nav-link {
  position: relative;
  gap: 0.2rem;
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -0.35rem;
  width: 1.35rem;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--accent-color), var(--accent-warm));
  transform: translateX(-50%) scaleX(0);
  transform-origin: center;
  transition: transform 0.3s var(--motion-ease);
}

.nav-link:hover::after,
.nav-link.active-link::after {
  transform: translateX(-50%) scaleX(1);
}

.home-container {
  min-height: 100vh;
  height: auto;
  display: grid;
  align-content: center;
}

.home-content {
  gap: 2rem;
}

.home-data {
  max-width: 620px;
}

.home-title {
  line-height: 1.08;
  letter-spacing: 0;
}

.home-description,
.about-description,
.portfolio-description {
  line-height: 1.8;
}

.home-social {
  position: relative;
}

.home-social-icon {
  display: grid;
  width: 2.75rem;
  height: 2.75rem;
  place-items: center;
  border: 1px solid var(--surface-border);
  border-radius: 50%;
  background: var(--surface-tint);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.06);
  backdrop-filter: blur(12px);
}

.home-social-icon:hover {
  color: var(--container-color);
  background: var(--first-color);
  transform: translateY(-0.35rem) rotate(-4deg);
  animation: none;
}

.smoke-yinyang {
  animation: float-profile 5.5s ease-in-out infinite;
}

@keyframes float-profile {
  0%,
  100% {
    transform: translate3d(0, 0, 0);
  }

  50% {
    transform: translate3d(0, -0.7rem, 0);
  }
}

.button {
  border: 1px solid transparent;
  transform: translateZ(0);
}

.button:hover .button-icon,
.home-scroll-button:hover .home-scroll-arrow {
  transform: translateX(0.35rem);
}

.about-container {
  align-items: center;
}

.about-img {
  border-radius: 1rem;
  transform: rotate(-1.5deg);
}

.about-img:hover {
  transform: rotate(0deg) translateY(-0.4rem);
}

.about-info {
  gap: 0.8rem;
}

.about-info > div,
.contact-info,
.qa-panel,
.qa-chat,
.services-content,
.portfolio-feature-card,
.portfolio-content,
.certificate-content {
  position: relative;
  border: 1px solid var(--surface-border);
  background:
    radial-gradient(circle at var(--glow-x, 50%) var(--glow-y, 50%), rgba(47, 111, 115, 0.12), transparent 34%),
    var(--surface-tint);
  backdrop-filter: blur(16px);
  transform: perspective(900px) rotateX(var(--tilt-x, 0deg)) rotateY(var(--tilt-y, 0deg));
  transition:
    transform 0.35s var(--motion-spring),
    box-shadow 0.35s ease,
    border-color 0.35s ease,
    background-color 0.35s ease;
}

.about-info > div {
  flex: 1 1 0;
  min-width: 0;
  padding: 1rem 0.75rem;
  border-radius: 0.8rem;
  box-shadow: 0 14px 38px rgba(0, 0, 0, 0.05);
}

.about-info > div:hover,
.contact-info:hover,
.qa-panel:hover,
.qa-chat:hover,
.services-content:hover,
.portfolio-feature-card:hover,
.portfolio-content:hover,
.certificate-content:hover {
  border-color: color-mix(in srgb, var(--accent-color) 34%, var(--surface-border));
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.12);
}

.skills-content {
  max-width: 980px;
}

.skills-name {
  border: 1px solid var(--surface-border);
  background: var(--container-color);
  color: var(--title-color);
  border-radius: 999px;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.055);
  transform: translateZ(0);
}

.skills-name:hover {
  background: var(--first-color);
  color: var(--container-color);
  transform: translateY(-0.35rem) rotate(-1deg);
}

.qualification-button {
  padding: 0.85rem 1rem;
  border-radius: 999px;
  border: 1px solid transparent;
  transition: border-color 0.3s ease, background 0.3s ease, transform 0.3s var(--motion-spring);
}

.qualification-button:hover,
.qualification-button.qualification-active {
  background: var(--surface-tint);
  border-color: var(--surface-border);
  transform: translateY(-0.2rem);
}

.qualification-data {
  padding: 0.3rem 0;
}

.qualification-title,
.portfolio-title,
.services-title,
.contact-title {
  line-height: 1.35;
}

.services-content {
  min-height: 240px;
  border-radius: 0.85rem;
  overflow: hidden;
}

.services-content::after {
  content: "";
  position: absolute;
  inset: auto 1.25rem 1.1rem;
  height: 1px;
  background: linear-gradient(90deg, var(--accent-color), transparent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.35s var(--motion-ease);
}

.services-content:hover::after {
  transform: scaleX(1);
}

.services-icon {
  transition: transform 0.35s var(--motion-spring), color 0.3s ease;
}

.services-content:hover .services-icon {
  color: var(--accent-color);
  transform: translateY(-0.25rem) rotate(-6deg) scale(1.08);
}

.services-box {
  perspective: 1100px;
}

.services-box-content,
.cv-modal-content {
  border: 1px solid var(--surface-border);
  transform: translateY(1rem) rotateX(8deg) scale(0.92);
}

.services-box.active-box .services-box-content,
.cv-modal.active .cv-modal-content {
  transform: translateY(0) rotateX(0deg) scale(1);
}

.portfolio-feature-card {
  border-radius: 1rem;
  overflow: hidden;
}

.portfolio-feature-img,
.portfolio-img,
.certificate-img {
  aspect-ratio: 16 / 10;
  object-fit: cover;
  transition: transform 0.45s var(--motion-ease), box-shadow 0.35s ease, filter 0.35s ease;
}

.certificate-img {
  object-fit: contain;
}

.portfolio-feature-card:hover .portfolio-feature-img,
.portfolio-content:hover .portfolio-img,
.certificate-content:hover .certificate-img {
  transform: scale(1.035);
  filter: saturate(1.08) contrast(1.03);
}

.portfolio-content {
  padding: 1.25rem;
  border-radius: 1rem;
}

.swiper-slide.portfolio-content {
  background: var(--surface-tint);
}

.swiper-angles {
  pointer-events: none;
}

.swiper-button-next,
.swiper-button-prev {
  pointer-events: auto;
  width: 3rem;
  height: 3rem;
  display: grid;
  place-items: center;
  border: 1px solid var(--surface-border);
  border-radius: 50%;
  background: var(--surface-tint);
  backdrop-filter: blur(14px);
  box-shadow: 0 16px 35px rgba(0, 0, 0, 0.08);
  color: var(--first-color);
  cursor: pointer;
  padding: 0;
  transition: transform 0.3s var(--motion-spring), background 0.3s ease;
}

.swiper-button-next:hover,
.swiper-button-prev:hover {
  background: var(--first-color);
  transform: translateY(-0.25rem) scale(1.04);
}

.swiper-button-next:hover .swiper-icon,
.swiper-button-prev:hover .swiper-icon {
  color: var(--container-color);
}

.contact-container {
  max-width: 720px;
}

.contact-info {
  padding: 1rem 1.15rem;
  border-radius: 0.9rem;
}

.contact-info:hover .contact-icon {
  transform: rotate(-8deg) scale(1.1);
}

.contact-icon {
  transition: transform 0.3s var(--motion-spring);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.qa-container {
  grid-template-columns: minmax(0, 0.88fr) minmax(320px, 1.12fr);
  align-items: stretch;
  gap: 1.5rem;
  min-height: 0;
}

.qa-panel,
.qa-chat {
  border: 1px solid var(--surface-border);
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--accent-color) 12%, transparent), transparent 42%),
    var(--surface-tint);
  border-radius: 0.5rem;
  backdrop-filter: blur(16px);
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.08);
}

.qa-panel {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(1.25rem, 3vw, 2rem);
}

.qa-title {
  font-size: var(--h2-font-size);
  line-height: 1.35;
  margin-bottom: 0.75rem;
}

.qa-copy {
  color: var(--text-color-light);
  line-height: 1.75;
  margin-bottom: 1.25rem;
}

.qa-suggestions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.qa-suggestion {
  border: 1px solid var(--surface-border);
  border-radius: 999px;
  background: var(--container-color);
  color: var(--title-color);
  cursor: pointer;
  font: inherit;
  font-size: var(--small-font-size);
  padding: 0.62rem 0.85rem;
  transition:
    transform 0.3s var(--motion-spring),
    border-color 0.3s ease,
    background 0.3s ease,
    color 0.3s ease;
}

.qa-suggestion:hover {
  border-color: color-mix(in srgb, var(--accent-color) 42%, var(--surface-border));
  background: var(--first-color);
  color: var(--container-color);
  transform: translateY(-0.2rem);
}

.qa-chat {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto;
  height: clamp(520px, 68vh, 680px);
  min-height: 0;
  max-height: 680px;
  overflow: hidden;
}

.qa-chat-header {
  padding: 1rem;
  border-bottom: 1px solid var(--surface-border);
  background: color-mix(in srgb, var(--container-color) 70%, transparent);
}

.qa-agent {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.qa-agent h3 {
  font-size: var(--normal-font-size);
  line-height: 1.25;
}

.qa-agent span:not(.qa-avatar) {
  color: var(--text-color-light);
  font-size: var(--smaller-font-size);
}

.qa-avatar {
  display: grid;
  place-items: center;
  width: 2.65rem;
  height: 2.65rem;
  border-radius: 50%;
  color: var(--container-color);
  background: linear-gradient(135deg, var(--accent-color), var(--accent-warm));
  box-shadow: 0 12px 28px color-mix(in srgb, var(--accent-color) 28%, transparent);
}

.qa-messages {
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
  min-height: 0;
  padding: 1rem;
  overscroll-behavior: auto;
  overflow-y: auto;
  scrollbar-color: color-mix(in srgb, var(--accent-color) 58%, var(--surface-border)) transparent;
  scrollbar-width: thin;
}

.qa-messages::-webkit-scrollbar {
  width: 0.58rem;
}

.qa-messages::-webkit-scrollbar-track {
  background: color-mix(in srgb, var(--container-color) 48%, transparent);
  border-radius: 999px;
  margin: 0.85rem 0;
}

.qa-messages::-webkit-scrollbar-thumb {
  border: 2px solid transparent;
  border-radius: 999px;
  background:
    linear-gradient(var(--accent-color), var(--accent-warm)) padding-box,
    transparent border-box;
}

.qa-messages::-webkit-scrollbar-thumb:hover {
  background:
    linear-gradient(var(--first-color), var(--accent-color)) padding-box,
    transparent border-box;
}

.qa-message {
  max-width: min(84%, 36rem);
  padding: 0.85rem 1rem;
  border-radius: 0.5rem;
  line-height: 1.65;
  overflow-wrap: anywhere;
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.06);
}

.qa-markdown :is(p, ul, ol, blockquote, pre) {
  margin-bottom: 0.75rem;
}

.qa-markdown :is(p, ul, ol, blockquote, pre):last-child {
  margin-bottom: 0;
}

.qa-markdown :is(h3, h4, h5) {
  margin-bottom: 0.45rem;
  color: var(--title-color);
  font-size: var(--normal-font-size);
  line-height: 1.35;
}

.qa-markdown ul,
.qa-markdown ol {
  padding-left: 1.15rem;
}

.qa-markdown li + li {
  margin-top: 0.35rem;
}

.qa-markdown a {
  color: var(--accent-color);
  font-weight: var(--font-medium);
  text-decoration: underline;
  text-underline-offset: 0.18rem;
}

.qa-markdown code {
  padding: 0.1rem 0.34rem;
  border: 1px solid var(--surface-border);
  border-radius: 0.35rem;
  background: color-mix(in srgb, var(--input-color) 82%, transparent);
  color: var(--title-color);
  font-size: 0.92em;
}

.qa-markdown pre {
  overflow-x: auto;
  padding: 0.85rem;
  border: 1px solid var(--surface-border);
  border-radius: 0.5rem;
  background: var(--input-color);
}

.qa-markdown pre code {
  display: block;
  padding: 0;
  border: 0;
  background: transparent;
  white-space: pre;
}

.qa-markdown blockquote {
  padding-left: 0.85rem;
  border-left: 3px solid var(--accent-color);
  color: var(--text-color-light);
}

.qa-message-bot {
  align-self: flex-start;
  color: var(--text-color);
  background: color-mix(in srgb, var(--container-color) 88%, transparent);
  border: 1px solid var(--surface-border);
}

.qa-message-user {
  align-self: flex-end;
  color: var(--container-color);
  background: var(--first-color);
}

body.dark-theme .qa-message-user {
  color: var(--body-color);
}

.qa-message-error {
  border-color: color-mix(in srgb, #d64d4d 45%, var(--surface-border));
}

.qa-typing {
  display: inline-flex;
  gap: 0.35rem;
  align-items: center;
}

.qa-typing span {
  width: 0.42rem;
  height: 0.42rem;
  border-radius: 50%;
  background: var(--text-color-light);
  animation: qaTyping 0.9s ease-in-out infinite;
}

.qa-typing span:nth-child(2) {
  animation-delay: 0.14s;
}

.qa-typing span:nth-child(3) {
  animation-delay: 0.28s;
}

@keyframes qaTyping {
  0%,
  100% {
    opacity: 0.35;
    transform: translateY(0);
  }

  50% {
    opacity: 1;
    transform: translateY(-0.18rem);
  }
}

.qa-form {
  display: grid;
  grid-template-columns: 1fr auto;
  flex-shrink: 0;
  gap: 0.7rem;
  align-items: end;
  padding: 1rem;
  border-top: 1px solid var(--surface-border);
  background: color-mix(in srgb, var(--container-color) 70%, transparent);
}

.qa-form textarea {
  width: 100%;
  max-height: 9rem;
  min-height: 3rem;
  resize: none;
  border: 1px solid var(--surface-border);
  border-radius: 0.5rem;
  padding: 0.85rem 1rem;
  background: var(--input-color);
  color: var(--title-color);
  font: inherit;
  line-height: 1.5;
  outline: none;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.qa-form textarea:focus {
  border-color: color-mix(in srgb, var(--accent-color) 58%, var(--surface-border));
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent-color) 14%, transparent);
}

.qa-submit {
  display: grid;
  place-items: center;
  width: 3rem;
  height: 3rem;
  border: 0;
  border-radius: 50%;
  color: var(--container-color);
  background: var(--first-color);
  cursor: pointer;
  transition: transform 0.3s var(--motion-spring), opacity 0.3s ease;
}

body.dark-theme .qa-submit {
  color: var(--body-color);
}

.qa-submit:hover {
  transform: translateY(-0.18rem) rotate(-6deg);
}

.qa-submit:disabled,
.qa-form textarea:disabled {
  cursor: not-allowed;
  opacity: 0.66;
}

.footer-bg {
  position: relative;
  overflow: hidden;
  background:
    linear-gradient(135deg, rgba(47, 111, 115, 0.28), transparent 35%),
    var(--first-color);
}

.footer-bg::before {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.07) 0 1px, transparent 1px 4.5rem);
  opacity: 0.35;
  pointer-events: none;
}

.footer-container,
.footer-copy {
  position: relative;
}

.scrollup {
  border: 1px solid var(--surface-border);
  backdrop-filter: blur(12px);
}

.reveal {
  opacity: 0;
  transform: translate3d(0, 2rem, 0) scale(0.98);
  transition:
    opacity 0.8s var(--motion-ease),
    transform 0.8s var(--motion-ease);
  transition-delay: calc(var(--motion-order, 0) * 55ms);
}

.reveal-left {
  transform: translate3d(-2.25rem, 0.8rem, 0) scale(0.98);
}

.reveal-right {
  transform: translate3d(2.25rem, 0.8rem, 0) scale(0.98);
}

.reveal.reveal-active {
  opacity: 1;
  transform: translate3d(0, 0, 0) scale(1);
}

body.is-navigating .main {
  animation: page-shift 0.7s var(--motion-ease);
}

@keyframes page-shift {
  0% {
    transform: translateX(0);
  }

  38% {
    transform: translateX(-1.1rem);
  }

  100% {
    transform: translateX(0);
  }
}

@media screen and (min-width: 768px) {
  .header {
    top: 1rem;
    bottom: initial;
    left: 50%;
    width: min(100% - 2rem, 1120px);
    border: 1px solid var(--surface-border);
    border-radius: 999px;
    transform: translateX(-50%);
  }

  .nav {
    max-width: 1120px;
    padding: 0 1.25rem;
  }

  .home-container {
    min-height: clamp(600px, 88vh, 760px);
    align-content: start;
    padding-top: clamp(7.25rem, 12vh, 8rem);
    padding-bottom: 2.25rem;
  }

  .home-content {
    grid-template-columns: 4rem minmax(260px, 0.95fr) minmax(330px, 1.05fr);
    column-gap: 3rem;
    padding-top: 0;
  }

  .home-data {
    order: 2;
  }

  .home-img {
    order: 1;
  }

  .home-social {
    order: 0;
  }

  .about-container {
    grid-template-columns: minmax(260px, 0.8fr) minmax(360px, 1.2fr);
  }

  .services-container {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .portfolio-content {
    grid-template-columns: minmax(300px, 0.9fr) minmax(360px, 1.1fr);
  }

  .portfolio-feature-card {
    grid-template-columns: minmax(360px, 1.1fr) minmax(320px, 0.9fr) !important;
    text-align: left;
    align-items: center;
  }

  .portfolio-feature-card .portfolio-data,
  .portfolio-feature-card .portfolio-description {
    text-align: left;
  }

  .contact-container {
    grid-template-columns: 1fr;
  }

  .qa-container {
    grid-template-columns: minmax(0, 0.9fr) minmax(360px, 1.1fr);
  }
}

@media screen and (max-width: 767px) {
  .container {
    width: min(100% - 2rem, 1120px);
  }

  .section {
    padding: 4rem 0;
  }

  .nav-menu {
    bottom: 0;
    border: 1px solid var(--surface-border);
    background: color-mix(in srgb, var(--body-color) 88%, transparent);
    backdrop-filter: blur(20px);
    opacity: 0;
    pointer-events: none;
    transform: translateY(calc(100% + 1.5rem));
    animation: none;
    transition:
      opacity 0.35s ease,
      transform 0.45s var(--motion-ease);
  }

  .nav-menu.show-menu {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

  .home-content {
    padding-top: 2rem;
    gap: 1.5rem;
  }

  .home-container {
    min-height: calc(100vh - var(--header-height));
    padding-bottom: 5rem;
  }

  .home-data {
    padding-bottom: 1rem;
  }

  .about-info {
    flex-direction: column;
  }

  .services-container {
    grid-template-columns: 1fr;
  }

  .services-content {
    min-height: 190px;
  }

  .qa-container {
    grid-template-columns: 1fr;
  }

  .qa-panel,
  .qa-chat {
    backdrop-filter: none;
  }

  .qa-chat {
    height: min(620px, 78vh);
    min-height: 480px;
    max-height: 620px;
    grid-template-rows: auto minmax(0, 1fr) auto;
  }

  .qa-message {
    max-width: 92%;
  }

  .qa-suggestions {
    gap: 0.5rem;
  }

  .swiper-angles {
    bottom: 0;
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-top: 1.5rem;
  }

  .swiper-button-prev,
  .swiper-button-next {
    position: static;
    margin: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.001ms !important;
  }

  .section,
  .section.hidden-left,
  .section.hidden-right,
  .section.hidden-up,
  .section.hidden-down,
  .reveal,
  .reveal-left,
  .reveal-right,
  .smoke-yinyang,
  #modern-splash,
  #modern-splash::before,
  #modern-splash::after,
  .splash-atmosphere span,
  .splash-logo::before,
  .splash-logo::after,
  .yinyang-symbol,
  .splash-initials,
  .splash-text span,
  .splash-description,
  .splash-loader,
  .loader-progress {
    opacity: 1;
    transform: none !important;
    filter: none !important;
  }
}

/* ==================== MODAL AND MOBILE CAROUSEL REFINEMENTS ==================== */
.services-box {
  inset: 0;
  z-index: 10000;
  padding: clamp(1rem, 4vw, 2.5rem);
  background:
    radial-gradient(circle at 50% 20%, rgba(47, 111, 115, 0.16), transparent 36%),
    rgba(8, 10, 12, 0.58);
  backdrop-filter: blur(18px) saturate(1.05);
}

.services-box-content {
  width: min(92vw, 560px);
  max-height: min(78vh, 640px);
  overflow-y: auto;
  padding: clamp(1.5rem, 4vw, 2.4rem);
  border-radius: 1rem;
  background: color-mix(in srgb, var(--container-color) 92%, transparent);
  box-shadow: 0 28px 80px rgba(0, 0, 0, 0.24);
  scrollbar-width: thin;
  transform-origin: center;
}

.services-box-title {
  margin: 0 3rem 1.25rem 0;
  font-size: clamp(1.25rem, 2vw, 1.55rem);
  line-height: 1.2;
}

.services-box-close {
  top: 1.15rem;
  right: 1.15rem;
  width: 2.4rem;
  height: 2.4rem;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--input-color);
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s var(--motion-spring), background 0.3s ease, color 0.3s ease;
}

.services-box-close:hover {
  color: var(--container-color);
  background: var(--first-color);
  transform: rotate(90deg) scale(1.04);
}

.services-box-services {
  gap: 0.85rem;
}

.services-box-list {
  align-items: flex-start;
  padding: 0.85rem 0.95rem;
  border: 1px solid var(--surface-border);
  border-radius: 0.8rem;
  background: color-mix(in srgb, var(--container-color) 78%, transparent);
}

.services-box-list p {
  line-height: 1.55;
}

.services-list-icon {
  flex: 0 0 auto;
  margin-top: 0.15rem;
  margin-right: 0.65rem;
}

.services-content {
  transform: none;
}

.services-content:hover {
  transform: translateY(-0.45rem);
}

@media screen and (max-width: 968px) {
  .portfolio-container {
    width: min(100% - 2rem, 720px);
    padding: 0.25rem 0 2.5rem;
  }

  .portfolio-container .swiper-wrapper {
    align-items: stretch;
  }

  .portfolio-content {
    grid-template-columns: 1fr !important;
    gap: 1.15rem;
    padding: clamp(1rem, 4vw, 1.35rem);
    min-height: auto;
    text-align: left;
  }

  .portfolio-img {
    width: 100%;
    max-width: 440px;
    justify-self: center;
  }

  .portfolio-title {
    font-size: clamp(1.05rem, 4.8vw, 1.35rem);
  }

  .portfolio-description {
    text-align: left;
    line-height: 1.65;
    margin-bottom: 1rem;
  }

  .portfolio-feature-card .portfolio-description {
    text-align: left;
  }

  .portfolio-container .swiper-pagination {
    position: static;
    margin-top: 1.25rem;
  }

  .portfolio-container .swiper-angles {
    bottom: auto;
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-top: 1rem;
    position: static;
  }

  .portfolio-container .swiper-button-prev,
  .portfolio-container .swiper-button-next {
    position: static;
    inset: auto;
    margin: 0;
    width: 2.8rem;
    height: 2.8rem;
  }

  .portfolio-container .swiper-button-prev {
    order: 1;
  }

  .portfolio-container .swiper-button-next {
    order: 2;
  }

  .portfolio-container .swiper-icon {
    font-size: 1.35rem;
  }
}

@media screen and (max-width: 568px) {
  .services-box {
    align-items: center;
    justify-content: center;
    padding: 1rem;
  }

  .services-box-content {
    width: min(100%, 360px);
    max-height: min(78vh, 560px);
    border-radius: 1rem;
  }

  .portfolio-container {
    width: min(100% - 1.25rem, 420px);
  }

  .portfolio-content {
    padding: 1rem;
  }

  .portfolio-img {
    max-width: 100%;
  }

  .certificate-container {
    width: min(100% - 3rem, 320px);
    padding-bottom: 2.75rem;
  }

  .certificate-content {
    min-height: auto;
    padding: 1rem 0.85rem 1.15rem;
    border-radius: 0.9rem;
  }

  .certificate-header {
    gap: 0.75rem;
  }

  .certificate-img {
    width: min(100%, 220px);
    max-height: 150px;
  }

  .certificate-name {
    font-size: clamp(1rem, 5.5vw, 1.25rem);
    line-height: 1.35;
  }

  .certificate-client {
    line-height: 1.3;
  }
}

/* ==================== PERFORMANCE TUNING ==================== */
.about.section,
.skills.section,
.qualification.section,
.services.section,
.portfolio.section,
.contact.section,
.portfolio-qa.section,
.footer {
  content-visibility: auto;
  contain-intrinsic-size: 760px;
}

.section.hidden-left,
.section.hidden-right,
.section.hidden-up,
.section.hidden-down {
  filter: none;
}

.portfolio-feature-img,
.portfolio-img,
.certificate-img,
.about-img,
.avatar {
  backface-visibility: hidden;
  transform: translateZ(0);
}

@media screen and (max-width: 767px) {
  :root {
    --motion-spring: cubic-bezier(0.22, 1, 0.36, 1);
  }

  body {
    background:
      linear-gradient(145deg, rgba(47, 111, 115, 0.035), transparent 20rem),
      var(--body-color);
  }

  body.dark-theme {
    background:
      linear-gradient(145deg, rgba(114, 199, 195, 0.035), transparent 20rem),
      var(--body-color);
  }

  #scroll-progress {
    height: 3px;
    transition: none;
  }

  .main,
  .header,
  #scroll-progress {
    transition:
      transform 0.45s var(--motion-ease),
      opacity 0.45s ease;
  }

  body.splash-active .main,
  body.splash-active .header,
  body.splash-active #scroll-progress {
    transform: translateY(0.75rem) scale(0.98);
    filter: none;
  }

  #modern-splash {
    transition:
      transform 0.38s var(--motion-ease),
      opacity 0.36s ease,
      visibility 0.38s;
  }

  #modern-splash.zoom-3d-out {
    transform: translate3d(0, -0.25rem, 0) scale(1.03);
  }

  .yinyang-symbol {
    animation-duration: 2.4s;
  }

  .splash-initials {
    animation: none;
  }

  .splash-text span {
    animation-duration: 0.35s;
    animation-delay: calc(0.04s * var(--i));
  }

  .splash-description,
  .splash-loader {
    animation-duration: 0.35s;
    animation-delay: 0.22s;
  }

  .loader-progress {
    animation-duration: 1.7s;
  }

  img[data-src],
  img.lazy-loading {
    filter: none;
    opacity: 0.72;
    animation: none;
    transition: opacity 0.32s ease, transform 0.32s var(--motion-ease);
    background: var(--input-color);
  }

  img.lazy-loaded {
    filter: none;
    animation: fadeIn 0.25s ease;
  }

  img.lazy-loaded:hover {
    transform: none;
  }

  .abstract-background {
    display: block;
    opacity: 0.68;
    background:
      radial-gradient(circle at 68% 18%, var(--binary-glow), transparent 18rem),
      linear-gradient(120deg, transparent 0 42%, rgba(47, 111, 115, 0.035) 42% 43%, transparent 43% 100%);
  }

  body.dark-theme .abstract-background {
    opacity: 0.48;
  }

  .abstract-background::before,
  .abstract-background::after {
    display: block;
    will-change: transform, opacity;
  }

  .abstract-background::before {
    inset: -8% -2% -8% -14%;
    opacity: 0.22;
    background-size: 5.25rem 5.25rem;
    animation-duration: 42s;
    mask-image: linear-gradient(115deg, transparent 0 18%, #000 38% 62%, transparent 84% 100%);
  }

  .abstract-background::after {
    width: 28rem;
    height: 28rem;
    right: -12rem;
    top: -13rem;
    opacity: 0.24;
    animation-duration: 34s;
  }

  .binary-streams {
    inset: -4% -12% -4% -10%;
    grid-auto-rows: minmax(2.8rem, 1fr);
    transform: rotate(-8deg) scale(1.05);
    opacity: 0.72;
    mask-image: linear-gradient(105deg, transparent 0 4%, #000 22% 80%, transparent 96% 100%);
  }

  body.dark-theme .binary-streams {
    opacity: 0.78;
  }

  .binary-row {
    font-size: 0.62rem;
    letter-spacing: 0.26em;
    min-width: 155vw;
    text-shadow: 0 0 0.65rem var(--binary-ink-soft);
    animation-duration: 34s;
  }

  .binary-orbit {
    display: block;
    box-shadow: inset 0 0 1rem var(--binary-panel), 0 0 1.35rem var(--binary-ink-soft);
    opacity: 0.18;
  }

  .binary-orbit-1 {
    width: 24rem;
    left: -17rem;
    top: 12vh;
    animation-duration: 34s;
  }

  .binary-orbit-2 {
    width: 18rem;
    right: -11rem;
    bottom: -7rem;
    animation-duration: 38s;
  }

  .binary-scanline {
    width: 7rem;
    opacity: 0.14;
    filter: none;
    animation-duration: 14s;
  }

  .section {
    transition:
      opacity 0.55s ease,
      transform 0.55s var(--motion-ease);
  }

  .section::after {
    display: none;
  }

  .section::before {
    transition-duration: 0.45s;
  }

  .section.hidden-left,
  .section.hidden-right,
  .section.hidden-up,
  .section.hidden-down {
    opacity: 0;
    transform: translate3d(calc(var(--section-direction, 1) * 0.75rem), 1.1rem, 0) scale(0.985);
  }

  .section.active-3d {
    opacity: 1;
    transform: translate3d(0, 0, 0) scale(1);
    filter: none;
  }

  .reveal,
  .reveal-left,
  .reveal-right {
    transform: translate3d(0, 1rem, 0);
    transition:
      opacity 0.45s ease,
      transform 0.45s var(--motion-ease);
    transition-delay: calc(var(--motion-order, 0) * 28ms);
  }

  .reveal.reveal-active {
    transform: translate3d(0, 0, 0);
  }

  .home-social-icon,
  .contact-info,
  .qa-panel,
  .qa-chat,
  .services-content,
  .portfolio-feature-card,
  .portfolio-content,
  .certificate-content,
  .scrollup,
  .header,
  .services-box,
  .services-box-content,
  .cv-modal {
    backdrop-filter: none;
  }

  .about-info > div,
  .contact-info,
  .qa-panel,
  .qa-chat,
  .services-content,
  .portfolio-feature-card,
  .portfolio-content,
  .certificate-content {
    background: var(--surface-tint);
    transform: translateZ(0);
    transition:
      transform 0.28s var(--motion-ease),
      box-shadow 0.28s ease,
      border-color 0.28s ease;
  }

  .about-info > div:hover,
  .contact-info:hover,
  .qa-panel:hover,
  .qa-chat:hover,
  .services-content:hover,
  .portfolio-feature-card:hover,
  .portfolio-content:hover,
  .certificate-content:hover {
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.08);
  }

  .portfolio-feature-card:hover .portfolio-feature-img,
  .portfolio-content:hover .portfolio-img,
  .certificate-content:hover .certificate-img {
    filter: none;
    transform: none;
  }
}

/* Explicit carousel controls */
.portfolio-container .portfolio-angles,
.certificate-container .certificate-angles {
  position: absolute;
  inset: 0;
  display: none;
  margin: 0;
  pointer-events: none;
  z-index: 5;
}

.portfolio-container .portfolio-button-prev,
.portfolio-container .portfolio-button-next,
.certificate-container .certificate-button-prev,
.certificate-container .certificate-button-next {
  position: absolute;
  top: calc(50% - 1.5rem);
  inset-block-start: calc(50% - 1.5rem);
  margin: 0;
}

.portfolio-container .portfolio-button-prev,
.certificate-container .certificate-button-prev {
  left: clamp(0.5rem, 2vw, 1.25rem);
  right: auto;
}

.portfolio-container .portfolio-button-next,
.certificate-container .certificate-button-next {
  right: clamp(0.5rem, 2vw, 1.25rem);
  left: auto;
}

.portfolio-container .swiper-pagination-portfolio {
  bottom: 0;
}

@media screen and (max-width: 767px) {
  .portfolio-container .portfolio-button-prev,
  .portfolio-container .portfolio-button-next,
  .certificate-container .certificate-button-prev,
  .certificate-container .certificate-button-next {
    position: absolute;
    top: calc(50% - 1.25rem);
    width: 2.5rem;
    height: 2.5rem;
    margin: 0;
  }

  .portfolio-container .portfolio-button-prev,
  .certificate-container .certificate-button-prev {
    left: 0.5rem;
    right: auto;
  }

  .portfolio-container .portfolio-button-next,
  .certificate-container .certificate-button-next {
    right: 0.5rem;
    left: auto;
  }
}