:root {
  --bg: #0b0d10;
  --bg2: #0f1217;
  --card: rgba(255, 255, 255, 0.06);
  --card2: rgba(255, 255, 255, 0.09);
  --text: rgba(255, 255, 255, 0.92);
  --muted: rgba(255, 255, 255, 0.68);
  --faint: rgba(255, 255, 255, 0.45);
  --line: rgba(255, 255, 255, 0.12);
  --shadow: 0 18px 60px rgba(0, 0, 0, 0.45);
  --radius: 18px;
  --radius2: 26px;
  --container: 1140px;

  --brand: #d7c1ff;
  --brand2: #8fe7ff;
  --accent: #b8ffcb;

  --font: "Inter", system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  --serif: "Playfair Display", Georgia, "Times New Roman", serif;

  --ease: cubic-bezier(0.2, 0.8, 0.2, 1);
  --dur: 520ms;
}

[data-theme="light"] {
  --bg: #f6f7fb;
  --bg2: #ffffff;
  --card: rgba(10, 12, 16, 0.05);
  --card2: rgba(10, 12, 16, 0.08);
  --text: rgba(10, 12, 16, 0.92);
  --muted: rgba(10, 12, 16, 0.7);
  --faint: rgba(10, 12, 16, 0.5);
  --line: rgba(10, 12, 16, 0.12);
  --shadow: 0 18px 60px rgba(10, 12, 16, 0.14);

  --brand: #5a33ff;
  --brand2: #0aa6c6;
  --accent: #1aa36b;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  color: var(--text);
  background: radial-gradient(1200px 800px at 20% -10%, rgba(215, 193, 255, 0.18), transparent 60%),
    radial-gradient(900px 700px at 80% 0%, rgba(143, 231, 255, 0.14), transparent 60%),
    radial-gradient(900px 700px at 60% 110%, rgba(184, 255, 203, 0.1), transparent 55%),
    linear-gradient(180deg, var(--bg), var(--bg2));
  min-height: 100vh;
  overflow-x: hidden;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input,
select,
textarea {
  font: inherit;
  color: inherit;
}

.container {
  width: min(var(--container), calc(100% - 40px));
  margin: 0 auto;
}

.section,
.hero,
.footer {
  content-visibility: auto;
  contain-intrinsic-size: 1px 900px;
}

.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;
}

.skip-link {
  position: absolute;
  left: 16px;
  top: 16px;
  padding: 10px 12px;
  background: var(--bg2);
  border: 1px solid var(--line);
  border-radius: 10px;
  transform: translateY(-140%);
  transition: transform 200ms var(--ease);
  z-index: 1000;
}
.skip-link:focus {
  transform: translateY(0);
}

.bg-orbs {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -1;
}
.orb {
  position: absolute;
  filter: blur(30px);
  opacity: 0.55;
  transform: translate3d(0, 0, 0);
  animation: floaty 14s var(--ease) infinite;
}
.orb-1 {
  width: 520px;
  height: 520px;
  left: -160px;
  top: 120px;
  background: radial-gradient(circle at 30% 30%, rgba(215, 193, 255, 0.8), transparent 60%);
}
.orb-2 {
  width: 520px;
  height: 520px;
  right: -180px;
  top: 80px;
  background: radial-gradient(circle at 30% 30%, rgba(143, 231, 255, 0.75), transparent 62%);
  animation-delay: 0.9s;
}
.orb-3 {
  width: 620px;
  height: 620px;
  left: 42%;
  bottom: -320px;
  background: radial-gradient(circle at 30% 30%, rgba(184, 255, 203, 0.55), transparent 60%);
  animation-delay: 1.6s;
}
@keyframes floaty {
  0% { transform: translate3d(0, 0, 0) scale(1); }
  50% { transform: translate3d(0, -18px, 0) scale(1.02); }
  100% { transform: translate3d(0, 0, 0) scale(1); }
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(14px);
  background: rgba(11, 13, 16, 0.45);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
[data-theme="light"] .site-header {
  background: rgba(246, 247, 251, 0.75);
  border-bottom: 1px solid rgba(10, 12, 16, 0.08);
}

.nav {
  width: min(var(--container), calc(100% - 40px));
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 0;
  transition: padding 240ms var(--ease);
}
.site-header.is-compact .nav {
  padding: 10px 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  user-select: none;
}
.brand-mark {
  width: 36px;
  height: 36px;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.08);
  box-shadow: var(--shadow);
}
.brand-mark img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.brand-text {
  display: grid;
  line-height: 1.05;
}
.brand-name {
  font-weight: 650;
  letter-spacing: -0.02em;
}
.brand-tag {
  font-size: 12px;
  color: var(--muted);
  margin-top: 2px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 18px;
}
.nav-links a {
  font-size: 14px;
  color: var(--muted);
  padding: 10px 10px;
  border-radius: 12px;
  transition: background 200ms var(--ease), color 200ms var(--ease);
}
.nav-links a:hover {
  color: var(--text);
  background: var(--card);
}
.nav-links a.is-active {
  color: var(--text);
  background: linear-gradient(135deg, rgba(215, 193, 255, 0.18), rgba(143, 231, 255, 0.12));
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.theme-toggle {
  width: 42px;
  height: 42px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: var(--card);
  display: grid;
  place-items: center;
  cursor: pointer;
  transition: transform 220ms var(--ease), background 220ms var(--ease);
}
.theme-toggle:hover {
  transform: translateY(-1px);
  background: var(--card2);
}
.theme-toggle-icon {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, var(--brand), transparent 55%),
    radial-gradient(circle at 70% 70%, var(--brand2), transparent 55%),
    rgba(255, 255, 255, 0.18);
  box-shadow: inset 0 0 0 1px var(--line);
}

.nav-toggle {
  display: none;
  width: 46px;
  height: 46px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: var(--card);
  cursor: pointer;
  transition: background 220ms var(--ease);
}
.nav-toggle:hover {
  background: var(--card2);
}
.nav-toggle-lines {
  width: 20px;
  height: 14px;
  display: grid;
  gap: 4px;
  margin: 0 auto;
}
.nav-toggle-lines::before,
.nav-toggle-lines::after {
  content: "";
  display: block;
  height: 2px;
  border-radius: 2px;
  background: var(--text);
  opacity: 0.85;
}
.nav-toggle-lines::before {
  box-shadow: 0 6px 0 0 rgba(255, 255, 255, 0.85);
}
[data-theme="light"] .nav-toggle-lines::before {
  box-shadow: 0 6px 0 0 rgba(10, 12, 16, 0.85);
}

.hero {
  padding: 64px 0 30px;
  position: relative;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 38px;
  align-items: center;
}
.eyebrow {
  color: var(--muted);
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin: 0 0 14px;
}
.hero-title {
  font-family: var(--serif);
  font-weight: 650;
  letter-spacing: -0.03em;
  font-size: clamp(38px, 4.2vw, 58px);
  line-height: 1.02;
  margin: 0 0 16px;
}
.hero-subtitle {
  color: var(--muted);
  font-size: 16px;
  line-height: 1.6;
  margin: 0 0 22px;
  max-width: 58ch;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 16px;
  border-radius: 16px;
  border: 1px solid var(--line);
  cursor: pointer;
  user-select: none;
  transition: transform 220ms var(--ease), background 220ms var(--ease), border-color 220ms var(--ease);
  font-weight: 550;
  font-size: 14px;
}
.btn:active { transform: translateY(1px); }
.btn-primary {
  background: linear-gradient(135deg, rgba(215, 193, 255, 0.28), rgba(143, 231, 255, 0.18));
  border-color: rgba(255, 255, 255, 0.18);
}
[data-theme="light"] .btn-primary { border-color: rgba(10, 12, 16, 0.16); }
.btn-primary:hover {
  transform: translateY(-1px);
  background: linear-gradient(135deg, rgba(215, 193, 255, 0.36), rgba(143, 231, 255, 0.24));
}
.btn-ghost { background: var(--card); }
.btn-ghost:hover {
  transform: translateY(-1px);
  background: var(--card2);
}
.btn-sm {
  padding: 10px 12px;
  border-radius: 14px;
  font-size: 13px;
}

.hero-cta {
  display: flex;
  gap: 12px;
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: 18px;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin-top: 6px;
}
.stat {
  padding: 14px 14px;
  border-radius: 18px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.04);
}
.stat-value {
  font-weight: 720;
  letter-spacing: -0.02em;
  font-size: 18px;
}
.stat-label {
  margin-top: 6px;
  font-size: 12px;
  color: var(--muted);
  line-height: 1.35;
}

.pill-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
}
.pill {
  padding: 10px 12px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.04);
  color: var(--muted);
  font-size: 13px;
}

.hero-media {
  position: relative;
  min-height: 420px;
}
.hero-cards {
  position: relative;
  width: 100%;
  height: 100%;
  min-height: 420px;
}
.hero-card {
  position: absolute;
  border-radius: var(--radius2);
  border: 1px solid var(--line);
  background: var(--card);
  overflow: hidden;
  box-shadow: var(--shadow);
  transform: translateZ(0);
}
.hero-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.02);
  transition: transform 700ms var(--ease);
}
.hero-card:hover img { transform: scale(1.06); }
.card-a { left: -5%; top: 10px; width: 62%; height: 74%; }
.card-b { right: 0; top: 0; width: 48%; height: 50%; }
.card-c { right: 6%; bottom: 3%; width: 52%; height: 44%; }

.hero-badge {
  position: absolute;
  left: 12px;
  bottom: -12px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(0, 0, 0, 0.24);
  backdrop-filter: blur(12px);
  color: var(--text);
  font-size: 13px;
  box-shadow: var(--shadow);
}
[data-theme="light"] .hero-badge { background: rgba(255, 255, 255, 0.7); }
.hero-badge .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 6px rgba(184, 255, 203, 0.14);
  animation: pulse 2.2s var(--ease) infinite;
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(184, 255, 203, 0.18); }
  60% { box-shadow: 0 0 0 12px rgba(184, 255, 203, 0.02); }
  100% { box-shadow: 0 0 0 0 rgba(184, 255, 203, 0.0); }
}

.hero-marquee {
  margin-top: 34px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  overflow: hidden;
}
[data-theme="light"] .hero-marquee {
  border-top: 1px solid rgba(10, 12, 16, 0.08);
  border-bottom: 1px solid rgba(10, 12, 16, 0.08);
}
.marquee-track {
  display: flex;
  gap: 42px;
  padding: 14px 0;
  width: max-content;
  animation: marquee 22s linear infinite;
  color: var(--muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-size: 12px;
}
.marquee-track span { white-space: nowrap; }
@keyframes marquee {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

.section { padding: 70px 0; }

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 20px;
}
.section-title {
  margin: 0;
  font-size: 28px;
  letter-spacing: -0.02em;
}
.section-subtitle {
  margin: 10px 0 0;
  color: var(--muted);
  line-height: 1.65;
  max-width: 68ch;
}

.filters {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: flex-end;
}
.chip {
  padding: 10px 12px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--card);
  cursor: pointer;
  color: var(--muted);
  transition: transform 220ms var(--ease), background 220ms var(--ease), color 220ms var(--ease);
  font-size: 13px;
}
.chip:hover { transform: translateY(-1px); background: var(--card2); color: var(--text); }
.chip.is-active {
  color: var(--text);
  background: linear-gradient(135deg, rgba(215, 193, 255, 0.2), rgba(143, 231, 255, 0.14));
  border-color: rgba(255, 255, 255, 0.18);
}
[data-theme="light"] .chip.is-active { border-color: rgba(10, 12, 16, 0.14); }

.timeline {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-top: 18px;
}
.t-card {
  padding: 18px;
  border-radius: var(--radius2);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.04);
  box-shadow: 0 14px 50px rgba(0, 0, 0, 0.18);
}
.t-top {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}
.t-role {
  font-weight: 700;
  letter-spacing: -0.01em;
  font-size: 20px;
}
.t-when {
  color: var(--muted);
  font-size: 13px;
}
.t-org {
  margin-top: 8px;
  color: var(--muted);
}
.t-list {
  margin: 14px 0 0;
  padding: 0 0 0 18px;
  color: var(--muted);
  line-height: 1.7;
}
.t-tags {
  margin-top: 14px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.tag {
  padding: 9px 10px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.03);
  color: var(--muted);
  font-size: 12px;
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 14px;
  margin-top: 18px;
}
.p-card {
  grid-column: span 6;
  border-radius: 28px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.04);
  overflow: hidden;
  box-shadow: 0 14px 50px rgba(0, 0, 0, 0.18);
  transition: transform 240ms var(--ease), background 240ms var(--ease);
}
.p-card:hover { transform: translateY(-2px); background: rgba(255, 255, 255, 0.06); }
.p-media img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  transform: scale(1.02);
  transition: transform 900ms var(--ease);
}
.p-card:hover .p-media img { transform: scale(1.06); }
.p-body { padding: 16px; }
.p-kicker {
  color: var(--muted);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.p-title {
  margin: 10px 0 8px;
  letter-spacing: -0.02em;
  font-size: 18px;
}
.p-text {
  margin: 0;
  color: var(--muted);
  line-height: 1.65;
}
.p-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 14px;
}
.p-tags {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 14px;
}
.p-card.is-hidden { opacity: 0; transform: scale(0.985); pointer-events: none; }
.p-card.is-shown { opacity: 1; transform: scale(1); }

.work-footer {
  margin-top: 18px;
  display: flex;
  justify-content: center;
}

.edu-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-top: 18px;
}
.edu-card {
  padding: 18px;
  border-radius: var(--radius2);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.04);
  box-shadow: 0 14px 50px rgba(0, 0, 0, 0.18);
}
.edu-row {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 14px;
  align-items: start;
}
.edu-logo {
  border-radius: 18px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.03);
  overflow: hidden;
}
.edu-logo img {
  width: 100%;
  height: auto;
  object-fit: cover;
}
.edu-title {
  margin: 0;
  font-size: 18px;
  letter-spacing: -0.02em;
}
.edu-meta {
  margin: 8px 0 0;
  color: var(--muted);
}
.edu-list {
  margin: 12px 0 0;
  padding: 0 0 0 18px;
  color: var(--muted);
  line-height: 1.7;
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 18px;
}
.skill-card {
  padding: 16px;
  border-radius: var(--radius2);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.04);
}
.skill-title {
  font-weight: 700;
  letter-spacing: -0.01em;
}
.skill-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 12px;
}

.skill-icons {
  margin-top: 18px;
  display: grid;
  grid-template-columns: repeat(9, minmax(0, 1fr));
  gap: 12px;
}
.icon-item {
  padding: 12px;
  border-radius: 20px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.03);
  display: grid;
  justify-items: center;
  gap: 10px;
  transition: transform 220ms var(--ease), background 220ms var(--ease);
}
.icon-item:hover { transform: translateY(-2px); background: rgba(255, 255, 255, 0.06); }
.icon-item img { width: 56px; height: 56px; }
.icon-label { color: var(--muted); font-size: 12px; text-align: center; }

.cta-box {
  border-radius: 32px;
  border: 1px solid var(--line);
  background: radial-gradient(1000px 400px at 20% 0%, rgba(215, 193, 255, 0.22), transparent 60%),
    radial-gradient(900px 400px at 90% 20%, rgba(143, 231, 255, 0.18), transparent 60%),
    rgba(255, 255, 255, 0.04);
  padding: 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  box-shadow: var(--shadow);
}
.cta-title { margin: 0; font-size: 22px; letter-spacing: -0.02em; }
.cta-text { margin: 8px 0 0; color: var(--muted); }
.cta-actions { display: flex; gap: 12px; flex-wrap: wrap; }

.contact-grid {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: 18px;
  align-items: start;
}
.contact-cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin-top: 18px;
}
.mini {
  padding: 14px 14px;
  border-radius: var(--radius2);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.04);
}
.mini-title {
  color: var(--muted);
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.mini-text { margin-top: 8px; font-weight: 600; font-size: 14px; }
.link-inline { color: var(--text); }
.sep { color: var(--muted); padding: 0 6px; }

.form {
  padding: 18px;
  border-radius: 28px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.04);
  box-shadow: var(--shadow);
}
.form-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}
.field { display: grid; gap: 8px; margin-top: 12px; }
.label { font-size: 13px; color: var(--muted); }

input,
select,
textarea {
  width: 100%;
  padding: 12px 12px;
  border-radius: 16px;
  border: 1px solid var(--line);
  background: rgba(0, 0, 0, 0.12);
  outline: none;
  transition: border-color 200ms var(--ease), background 200ms var(--ease);
}
[data-theme="light"] input,
[data-theme="light"] select,
[data-theme="light"] textarea { background: rgba(255, 255, 255, 0.7); }
input:focus,
select:focus,
textarea:focus {
  border-color: rgba(215, 193, 255, 0.55);
  background: rgba(255, 255, 255, 0.06);
}
[data-theme="light"] input:focus,
[data-theme="light"] select:focus,
[data-theme="light"] textarea:focus { background: rgba(255, 255, 255, 0.92); }
textarea { resize: vertical; }

.form-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 14px;
  flex-wrap: wrap;
}
.form-note {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.5;
  max-width: 48ch;
}

.footer {
  padding: 34px 0 40px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}
[data-theme="light"] .footer { border-top: 1px solid rgba(10, 12, 16, 0.08); }
.footer-grid { display: grid; gap: 18px; }
.brand-footer .brand-mark {
  width: 34px;
  height: 34px;
  border-radius: 12px;
}
.footer-text {
  margin: 12px 0 0;
  color: var(--muted);
  max-width: 60ch;
  line-height: 1.65;
}
.footer-links {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  align-items: center;
}
.footer-links a {
  padding: 10px 12px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.03);
  color: var(--muted);
  font-size: 13px;
  transition: transform 220ms var(--ease), background 220ms var(--ease), color 220ms var(--ease);
}
.footer-links a:hover { transform: translateY(-1px); background: rgba(255, 255, 255, 0.06); color: var(--text); }
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 6px;
}
.footer-small { margin: 0; color: var(--muted); font-size: 13px; }
.to-top {
  padding: 10px 12px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.03);
  color: var(--muted);
  font-size: 13px;
  transition: transform 220ms var(--ease), background 220ms var(--ease), color 220ms var(--ease);
}
.to-top:hover { transform: translateY(-1px); background: rgba(255, 255, 255, 0.06); color: var(--text); }

.back-to-top {
  position: fixed;
  bottom: 18px;
  right: 18px;
  width: 54px;
  height: 54px;
  border-radius: 18px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
  cursor: pointer;
  display: grid;
  place-items: center;
  opacity: 0;
  pointer-events: none;
  transform: translateY(10px);
  transition: opacity 240ms var(--ease), transform 240ms var(--ease), background 240ms var(--ease);
  box-shadow: 0 14px 40px rgba(0, 0, 0, 0.22);
}
.back-to-top:hover { background: rgba(255, 255, 255, 0.1); }
.back-to-top.is-visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease);
  will-change: opacity, transform;
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 980px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-media { min-height: 380px; }
  .section-head { flex-direction: column; align-items: flex-start; }
  .filters { justify-content: flex-start; }
  .project-grid { grid-template-columns: repeat(6, 1fr); }
  .p-card { grid-column: span 6; }
  .skills-grid { grid-template-columns: 1fr; }
  .skill-icons { grid-template-columns: repeat(5, minmax(0, 1fr)); }
  .contact-grid { grid-template-columns: 1fr; }
  .contact-cards { grid-template-columns: 1fr; }
  .cta-box { flex-direction: column; align-items: flex-start; }
  .edu-row { grid-template-columns: 1fr; }
}

@media (max-width: 820px) {
  .nav-toggle { display: inline-grid; place-items: center; }
  .nav-links {
    position: absolute;
    left: 0;
    right: 0;
    top: 64px;
    width: min(var(--container), calc(100% - 40px));
    margin: 0 auto;
    padding: 12px;
    border-radius: 22px;
    border: 1px solid var(--line);
    background: rgba(15, 18, 23, 0.88);
    backdrop-filter: blur(16px);
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
    box-shadow: var(--shadow);
  }
  [data-theme="light"] .nav-links { background: rgba(255, 255, 255, 0.9); }
  .nav-links.is-open { display: flex; }
  .nav-links a { padding: 12px 12px; border: 1px solid var(--line); background: rgba(255, 255, 255, 0.03); }
  .theme-toggle { width: 100%; justify-content: center; }
  .hero-stats { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  .hero { padding-top: 44px; }
  .skill-icons { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .form-row { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce), (max-width: 820px) {
  .bg-orbs { display: none; }
  .site-header { backdrop-filter: none; }
  .orb { animation: none; filter: none; }
  .marquee-track { animation: none; }
  .hero-badge .dot { animation: none; }
  .hero-card,
  .p-card,
  .t-card,
  .edu-card,
  .form,
  .cta-box {
    box-shadow: none;
  }
}