/* ============================================================
   Omkar Chekuri — Portfolio homepage stylesheet
   Used by index.html only. Sub-pages keep using css/style.css.
   ============================================================ */

:root {
  --bg: #070b14;
  --bg-soft: #0b1020;
  --panel: rgba(255, 255, 255, 0.04);
  --panel-strong: rgba(255, 255, 255, 0.07);
  --border: rgba(255, 255, 255, 0.09);
  --border-strong: rgba(255, 255, 255, 0.16);
  --text: #e8ecf5;
  --muted: #9aa7bf;
  --faint: #6b7891;
  --accent-1: #7c6cff;
  --accent-2: #2dd4ff;
  --accent-3: #b16cff;
  --gradient: linear-gradient(100deg, var(--accent-1), var(--accent-2));
  --gradient-soft: linear-gradient(100deg, rgba(124, 108, 255, 0.16), rgba(45, 212, 255, 0.16));
  --shadow: 0 18px 50px rgba(2, 5, 14, 0.55);
  --radius: 18px;
  --nav-h: 68px;
  --font-display: "Space Grotesk", "Inter", sans-serif;
  --font-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

[data-theme="light"] {
  --bg: #f6f7fb;
  --bg-soft: #eef0f8;
  --panel: #ffffff;
  --panel-strong: #ffffff;
  --border: rgba(17, 24, 48, 0.1);
  --border-strong: rgba(17, 24, 48, 0.18);
  --text: #131a2e;
  --muted: #4d5a75;
  --faint: #7d89a3;
  --accent-1: #5b4bf0;
  --accent-2: #0aa8d6;
  --accent-3: #9333ea;
  --gradient: linear-gradient(100deg, #5b4bf0, #0aa8d6);
  --gradient-soft: linear-gradient(100deg, rgba(91, 75, 240, 0.1), rgba(10, 168, 214, 0.1));
  --shadow: 0 16px 40px rgba(19, 26, 46, 0.1);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-h) + 16px);
}

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  font-size: 16.5px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

::selection {
  background: rgba(124, 108, 255, 0.4);
}

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

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

.wrap {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 28px;
}

/* ---------- background decor ---------- */
.bg-decor {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(720px 420px at 12% -6%, rgba(124, 108, 255, 0.16), transparent 60%),
    radial-gradient(680px 420px at 95% 12%, rgba(45, 212, 255, 0.1), transparent 60%),
    radial-gradient(700px 520px at 55% 115%, rgba(177, 108, 255, 0.08), transparent 60%);
}

.bg-decor::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: radial-gradient(900px 600px at 50% 0%, rgba(0, 0, 0, 0.8), transparent 75%);
  -webkit-mask-image: radial-gradient(900px 600px at 50% 0%, rgba(0, 0, 0, 0.8), transparent 75%);
}

[data-theme="light"] .bg-decor {
  background:
    radial-gradient(720px 420px at 12% -6%, rgba(91, 75, 240, 0.1), transparent 60%),
    radial-gradient(680px 420px at 95% 12%, rgba(10, 168, 214, 0.08), transparent 60%);
}

[data-theme="light"] .bg-decor::after {
  background-image:
    linear-gradient(rgba(19, 26, 46, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(19, 26, 46, 0.035) 1px, transparent 1px);
}

/* ---------- nav ---------- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  transition: background 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
  border-bottom: 1px solid transparent;
}

.nav.scrolled {
  background: color-mix(in srgb, var(--bg) 78%, transparent);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-bottom-color: var(--border);
}

.nav .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.brand {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.01em;
  display: flex;
  align-items: center;
  gap: 10px;
}

.brand .dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--gradient);
  box-shadow: 0 0 12px rgba(124, 108, 255, 0.8);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
}

.nav-links a {
  padding: 8px 13px;
  border-radius: 10px;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--muted);
  transition: color 0.2s, background 0.2s;
}

.nav-links a:hover {
  color: var(--text);
  background: var(--panel-strong);
}

.nav-links a.active {
  color: var(--text);
  background: var(--panel-strong);
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-left: 10px;
  padding: 8px 16px;
  border-radius: 12px;
  background: var(--gradient);
  color: #fff !important;
  font-weight: 600;
  font-size: 0.9rem;
  box-shadow: 0 6px 20px rgba(124, 108, 255, 0.35);
  transition: transform 0.2s, box-shadow 0.2s;
}

.nav-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 10px 26px rgba(124, 108, 255, 0.45);
  background: var(--gradient);
}

.theme-toggle,
.nav-burger {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 11px;
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--muted);
  cursor: pointer;
  font-size: 0.95rem;
  transition: color 0.2s, border-color 0.2s;
}

.theme-toggle:hover,
.nav-burger:hover {
  color: var(--text);
  border-color: var(--border-strong);
}

.nav-burger {
  display: none;
}

/* ---------- hero ---------- */
.hero {
  padding: calc(var(--nav-h) + 72px) 0 40px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: 56px;
  align-items: center;
}

.kicker {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  border: 1px solid var(--border);
  background: var(--panel);
  padding: 7px 14px;
  border-radius: 999px;
  margin-bottom: 22px;
}

.kicker::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #3ddc84;
  box-shadow: 0 0 10px #3ddc84;
  animation: pulse 2.2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.35; }
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.6rem, 5.4vw, 4.1rem);
  line-height: 1.06;
  letter-spacing: -0.02em;
  font-weight: 700;
  margin-bottom: 18px;
}

.hero h1 .grad {
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero .tagline {
  font-size: clamp(1.05rem, 1.8vw, 1.25rem);
  color: var(--muted);
  max-width: 56ch;
  margin-bottom: 14px;
}

.hero .tagline b {
  color: var(--text);
  font-weight: 600;
}

.roles {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 20px 0 30px;
}

.roles span {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--muted);
  border: 1px solid var(--border);
  background: var(--panel);
  padding: 6px 13px;
  border-radius: 999px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 13px 24px;
  border-radius: 14px;
  font-weight: 600;
  font-size: 0.98rem;
  transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
}

.btn-primary {
  background: var(--gradient);
  color: #fff;
  box-shadow: 0 10px 30px rgba(124, 108, 255, 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 36px rgba(124, 108, 255, 0.5);
}

.btn-ghost {
  border: 1px solid var(--border-strong);
  color: var(--text);
  background: var(--panel);
}

.btn-ghost:hover {
  transform: translateY(-2px);
  border-color: var(--accent-1);
}

.hero-social {
  display: flex;
  gap: 10px;
  margin-left: 4px;
}

.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  border-radius: 13px;
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--muted);
  font-size: 1.15rem;
  transition: all 0.2s;
}

.icon-btn:hover {
  color: var(--text);
  border-color: var(--accent-1);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(124, 108, 255, 0.25);
}

/* portrait */
.portrait-col {
  display: flex;
  justify-content: center;
}

.portrait {
  position: relative;
  width: min(320px, 76vw);
}

.portrait::before {
  content: "";
  position: absolute;
  inset: -26px;
  background:
    radial-gradient(60% 60% at 30% 20%, rgba(124, 108, 255, 0.4), transparent 70%),
    radial-gradient(55% 55% at 75% 80%, rgba(45, 212, 255, 0.3), transparent 70%);
  filter: blur(30px);
  z-index: -1;
}

.portrait .frame {
  border-radius: 26px;
  padding: 5px;
  background: var(--gradient);
  box-shadow: var(--shadow);
}

.portrait img {
  border-radius: 22px;
  width: 100%;
  aspect-ratio: 4 / 4.6;
  object-fit: cover;
  object-position: top;
}

.portrait .badge-card {
  position: absolute;
  left: -34px;
  bottom: 26px;
  display: flex;
  align-items: center;
  gap: 10px;
  background: color-mix(in srgb, var(--bg-soft) 88%, transparent);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border-strong);
  border-radius: 14px;
  padding: 10px 15px;
  font-size: 0.82rem;
  font-weight: 600;
  box-shadow: var(--shadow);
  white-space: nowrap;
}

.portrait .badge-card i {
  color: #ffc53d;
  font-size: 1rem;
}

.portrait .badge-card small {
  display: block;
  color: var(--faint);
  font-weight: 500;
}

/* stats */
.stats {
  margin-top: 64px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.stat {
  border: 1px solid var(--border);
  background: var(--panel);
  border-radius: var(--radius);
  padding: 20px 22px;
  transition: border-color 0.25s, transform 0.25s;
}

.stat:hover {
  border-color: var(--border-strong);
  transform: translateY(-3px);
}

.stat .num {
  font-family: var(--font-display);
  font-size: 1.85rem;
  font-weight: 700;
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  line-height: 1.2;
}

.stat .lbl {
  font-size: 0.87rem;
  color: var(--muted);
  margin-top: 3px;
}

/* ---------- sections ---------- */
section {
  padding: 84px 0 10px;
}

.section-head {
  margin-bottom: 40px;
  max-width: 720px;
}

.section-head .eyebrow {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin-bottom: 10px;
}

.section-head h2 {
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 3.2vw, 2.35rem);
  letter-spacing: -0.015em;
  line-height: 1.15;
  margin-bottom: 12px;
}

.section-head p {
  color: var(--muted);
  font-size: 1.02rem;
}

/* ---------- about ---------- */
.about-grid {
  display: grid;
  grid-template-columns: 1.55fr 1fr;
  gap: 28px;
  align-items: start;
}

.about-text p {
  color: var(--muted);
  margin-bottom: 16px;
  font-size: 1.03rem;
}

.about-text b {
  color: var(--text);
  font-weight: 600;
}

.side-card {
  border: 1px solid var(--border);
  background: var(--panel);
  border-radius: var(--radius);
  padding: 26px;
}

.side-card + .side-card {
  margin-top: 16px;
}

.side-card h3 {
  font-family: var(--font-display);
  font-size: 1.02rem;
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}

.side-card h3 i {
  color: var(--accent-2);
}

.edu-item {
  padding: 10px 0;
  border-top: 1px dashed var(--border);
}

.edu-item:first-of-type {
  border-top: 0;
  padding-top: 0;
}

.edu-item .deg {
  font-weight: 600;
  font-size: 0.95rem;
}

.edu-item .inst {
  color: var(--muted);
  font-size: 0.88rem;
}

.edu-item .yr {
  float: right;
  font-size: 0.8rem;
  color: var(--faint);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 1px 10px;
  margin-top: 2px;
}

.cert-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.cert-chips span {
  font-size: 0.82rem;
  color: var(--muted);
  border: 1px solid var(--border);
  background: var(--bg-soft);
  border-radius: 999px;
  padding: 5px 12px;
}

/* ---------- experience timeline ---------- */
.timeline {
  position: relative;
  margin-left: 6px;
  padding-left: 34px;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--accent-1), var(--accent-2), transparent);
  opacity: 0.5;
}

.tl-item {
  position: relative;
  padding-bottom: 42px;
}

.tl-item:last-child {
  padding-bottom: 8px;
}

.tl-item::before {
  content: "";
  position: absolute;
  left: -40px;
  top: 6px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--gradient);
  box-shadow: 0 0 0 5px color-mix(in srgb, var(--accent-1) 18%, transparent);
}

.tl-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 14px;
  margin-bottom: 8px;
}

.tl-role {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.12rem;
}

.tl-org {
  color: var(--accent-2);
  font-weight: 600;
  font-size: 0.98rem;
}

.tl-date {
  margin-left: auto;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--muted);
  border: 1px solid var(--border);
  background: var(--panel);
  padding: 3px 12px;
  border-radius: 999px;
  white-space: nowrap;
}

.tl-item ul {
  list-style: none;
  color: var(--muted);
  font-size: 0.97rem;
}

.tl-item ul li {
  position: relative;
  padding-left: 22px;
  margin-bottom: 7px;
}

.tl-item ul li::before {
  content: "\2192";
  position: absolute;
  left: 0;
  color: var(--accent-1);
  font-weight: 700;
}

.tl-item ul b {
  color: var(--text);
  font-weight: 600;
}

.tl-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-top: 12px;
}

.tl-tags span,
.tag {
  font-size: 0.76rem;
  font-weight: 500;
  color: var(--muted);
  background: var(--gradient-soft);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 3px 11px;
}

/* ---------- projects ---------- */
.proj-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.proj-card {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--border);
  background: var(--panel);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.28s ease, border-color 0.28s ease, box-shadow 0.28s ease;
}

.proj-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-strong);
  box-shadow: var(--shadow);
}

.proj-thumb {
  position: relative;
  aspect-ratio: 16 / 9.5;
  overflow: hidden;
  background: var(--bg-soft);
}

.proj-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.45s ease;
}

.proj-card:hover .proj-thumb img {
  transform: scale(1.06);
}

.proj-thumb::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 55%, rgba(7, 11, 20, 0.55));
  opacity: 0.9;
}

[data-theme="light"] .proj-thumb::after {
  background: linear-gradient(180deg, transparent 70%, rgba(19, 26, 46, 0.18));
}

.proj-body {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: 20px 22px 22px;
}

.proj-body h3 {
  font-family: var(--font-display);
  font-size: 1.08rem;
  line-height: 1.35;
  margin-bottom: 8px;
}

.proj-body p {
  color: var(--muted);
  font-size: 0.92rem;
  flex: 1;
  margin-bottom: 14px;
}

.proj-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-bottom: 16px;
}

.proj-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--accent-2);
}

.proj-link i {
  transition: transform 0.2s;
}

.proj-card:hover .proj-link i {
  transform: translateX(4px);
}

/* ---------- publications ---------- */
.pub-group {
  margin-bottom: 34px;
}

.pub-group h3 {
  font-family: var(--font-display);
  font-size: 1rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--faint);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.pub-group h3::after {
  content: "";
  height: 1px;
  flex: 1;
  background: var(--border);
}

.pub {
  display: grid;
  grid-template-columns: 74px 1fr;
  gap: 20px;
  border: 1px solid var(--border);
  background: var(--panel);
  border-radius: var(--radius);
  padding: 22px 24px;
  margin-bottom: 14px;
  transition: border-color 0.25s, transform 0.25s;
}

.pub:hover {
  border-color: var(--border-strong);
  transform: translateX(4px);
}

.pub-year {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  padding-top: 2px;
}

.pub-title {
  font-weight: 600;
  font-size: 1.02rem;
  line-height: 1.45;
  margin-bottom: 6px;
}

.pub-title a:hover {
  color: var(--accent-2);
}

.pub-authors {
  color: var(--muted);
  font-size: 0.9rem;
}

.pub-authors b {
  color: var(--text);
  font-weight: 600;
}

.pub-venue {
  color: var(--faint);
  font-size: 0.88rem;
  font-style: italic;
  margin-top: 2px;
}

.pub-award {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 10px;
  font-size: 0.82rem;
  font-weight: 600;
  color: #ffc53d;
  background: rgba(255, 197, 61, 0.09);
  border: 1px solid rgba(255, 197, 61, 0.3);
  border-radius: 999px;
  padding: 4px 13px;
}

.pub-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 10px;
}

.pub-links a {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 0.86rem;
  font-weight: 600;
  color: var(--accent-2);
}

.pub-links a:hover {
  text-decoration: underline;
}

/* ---------- skills ---------- */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}

.skill-card {
  border: 1px solid var(--border);
  background: var(--panel);
  border-radius: var(--radius);
  padding: 26px;
  transition: border-color 0.25s, transform 0.25s;
}

.skill-card:hover {
  border-color: var(--border-strong);
  transform: translateY(-3px);
}

.skill-card h3 {
  font-family: var(--font-display);
  font-size: 1.05rem;
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.skill-card h3 .ico {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 11px;
  background: var(--gradient-soft);
  border: 1px solid var(--border);
  color: var(--accent-2);
  font-size: 1rem;
}

.skill-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.skill-chips span {
  font-size: 0.84rem;
  color: var(--muted);
  border: 1px solid var(--border);
  background: var(--bg-soft);
  border-radius: 999px;
  padding: 5px 13px;
  transition: color 0.2s, border-color 0.2s;
}

.skill-chips span:hover {
  color: var(--text);
  border-color: var(--accent-1);
}

/* ---------- awards & service ---------- */
.awards-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 18px;
  align-items: start;
}

.award-list {
  list-style: none;
}

.award-list li {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 13px 4px;
  border-bottom: 1px dashed var(--border);
  color: var(--muted);
  font-size: 0.95rem;
}

.award-list li:last-child {
  border-bottom: 0;
}

.award-list i {
  color: #ffc53d;
  margin-top: 4px;
}

.award-list b {
  color: var(--text);
  font-weight: 600;
}

.award-list .yr {
  margin-left: auto;
  font-size: 0.78rem;
  color: var(--faint);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 1px 10px;
  white-space: nowrap;
}

/* ---------- footer / contact ---------- */
.contact {
  margin-top: 90px;
  border-top: 1px solid var(--border);
  background: linear-gradient(180deg, transparent, rgba(124, 108, 255, 0.06));
  padding: 76px 0 34px;
  text-align: center;
}

.contact h2 {
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 4vw, 2.8rem);
  letter-spacing: -0.02em;
  margin-bottom: 14px;
}

.contact h2 .grad {
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.contact > .wrap > p {
  color: var(--muted);
  max-width: 54ch;
  margin: 0 auto 30px;
}

.contact-actions {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 34px;
}

.contact-social {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 46px;
}

.foot-note {
  border-top: 1px solid var(--border);
  padding-top: 24px;
  color: var(--faint);
  font-size: 0.85rem;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
}

.foot-note a {
  color: var(--muted);
}

.foot-note a:hover {
  color: var(--text);
}

/* ---------- reveal animation ---------- */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.65s cubic-bezier(0.22, 0.61, 0.36, 1), transform 0.65s cubic-bezier(0.22, 0.61, 0.36, 1);
}

.reveal.in {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .kicker::before { animation: none; }
}

/* ---------- otherworldly layer ---------- */
#cosmos {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
}

.bg-decor {
  z-index: -2;
}

.aurora {
  position: fixed;
  z-index: -2;
  pointer-events: none;
  width: 55vw;
  height: 55vw;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.5;
  will-change: transform;
}

.aurora-1 {
  top: -22vw;
  left: -12vw;
  background: radial-gradient(circle, rgba(124, 108, 255, 0.34), transparent 65%);
  animation: drift1 26s ease-in-out infinite alternate;
}

.aurora-2 {
  bottom: -25vw;
  right: -14vw;
  background: radial-gradient(circle, rgba(45, 212, 255, 0.24), transparent 65%);
  animation: drift2 32s ease-in-out infinite alternate;
}

.aurora-3 {
  top: 30vh;
  left: 55vw;
  width: 34vw;
  height: 34vw;
  background: radial-gradient(circle, rgba(177, 108, 255, 0.2), transparent 65%);
  animation: drift3 40s ease-in-out infinite alternate;
}

[data-theme="light"] .aurora {
  opacity: 0.35;
}

@keyframes drift1 {
  to { transform: translate(9vw, 7vh) scale(1.15); }
}

@keyframes drift2 {
  to { transform: translate(-8vw, -9vh) scale(1.2); }
}

@keyframes drift3 {
  to { transform: translate(-12vw, 10vh) scale(0.85); }
}

/* scroll progress */
#scrollProgress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient);
  transform-origin: 0 50%;
  transform: scaleX(0);
  z-index: 200;
  box-shadow: 0 0 12px rgba(124, 108, 255, 0.7);
}

/* shimmering gradient text */
.hero h1 .grad,
.contact h2 .grad {
  background: linear-gradient(100deg, var(--accent-1), var(--accent-2), var(--accent-3), var(--accent-1));
  background-size: 280% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation: shimmer 7s linear infinite;
}

@keyframes shimmer {
  to { background-position: 280% 0; }
}

/* typewriter line */
.typeline {
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-size: 1rem;
  color: var(--muted);
  margin: 4px 0 26px;
  min-height: 1.6em;
}

.typeline .prompt {
  color: var(--accent-2);
  font-family: var(--font-display);
  font-weight: 600;
}

.typeline #typewriter {
  color: var(--text);
  font-weight: 600;
}

.typeline .caret {
  width: 9px;
  height: 1.15em;
  background: var(--accent-2);
  align-self: center;
  animation: blink 1.05s steps(1) infinite;
  border-radius: 2px;
}

@keyframes blink {
  50% { opacity: 0; }
}

/* portrait orbit rings */
.portrait .orbit {
  position: absolute;
  inset: -34px;
  border-radius: 50%;
  border: 1.5px dashed rgba(124, 108, 255, 0.35);
  animation: spin 26s linear infinite;
  pointer-events: none;
}

.portrait .orbit::before {
  content: "";
  position: absolute;
  top: -5px;
  left: 50%;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent-2);
  box-shadow: 0 0 14px var(--accent-2);
}

.portrait .orbit-2 {
  inset: -58px;
  border-color: rgba(45, 212, 255, 0.22);
  animation: spinReverse 40s linear infinite;
}

.portrait .orbit-2::before {
  background: var(--accent-1);
  box-shadow: 0 0 14px var(--accent-1);
  width: 8px;
  height: 8px;
}

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

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

/* tilt cards: glare + snappier transform */
.tilt {
  transition: transform 0.18s ease-out, border-color 0.28s ease, box-shadow 0.28s ease;
  transform-style: preserve-3d;
}

.tilt .proj-body,
.tilt .proj-thumb {
  transform: translateZ(1px);
}

.proj-card {
  position: relative;
}

.proj-card::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: radial-gradient(340px circle at var(--mx, 50%) var(--my, 50%), rgba(124, 140, 255, 0.13), transparent 65%);
  opacity: 0;
  transition: opacity 0.3s;
  pointer-events: none;
  z-index: 1;
}

.proj-card:hover::after {
  opacity: 1;
}

/* view-all link */
.view-all {
  display: flex;
  justify-content: center;
  margin-top: 34px;
}

/* glow pulse on primary CTA */
.btn-primary {
  position: relative;
  overflow: hidden;
}

.btn-primary::after {
  content: "";
  position: absolute;
  top: 0;
  left: -80%;
  width: 60%;
  height: 100%;
  background: linear-gradient(100deg, transparent, rgba(255, 255, 255, 0.35), transparent);
  transform: skewX(-20deg);
  animation: sheen 4.5s ease-in-out infinite;
}

@keyframes sheen {
  0%, 55% { left: -80%; }
  75%, 100% { left: 130%; }
}

@media (prefers-reduced-motion: reduce) {
  .aurora,
  .portrait .orbit,
  .hero h1 .grad,
  .contact h2 .grad,
  .btn-primary::after,
  .typeline .caret {
    animation: none;
  }
  #cosmos { display: none; }
}

/* ---------- responsive ---------- */
@media (max-width: 1000px) {
  .hero-grid { grid-template-columns: 1fr; gap: 44px; }
  .portrait-col { order: -1; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .proj-grid { grid-template-columns: repeat(2, 1fr); }
  .about-grid { grid-template-columns: 1fr; }
  .awards-grid { grid-template-columns: 1fr; }
}

@media (max-width: 860px) {
  .nav-links {
    position: fixed;
    top: var(--nav-h);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    background: color-mix(in srgb, var(--bg) 96%, transparent);
    -webkit-backdrop-filter: blur(16px);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
    padding: 12px 20px 18px;
    display: none;
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links a {
    padding: 12px 14px;
    font-size: 1rem;
  }

  .nav-cta {
    margin: 8px 0 0;
    justify-content: center;
  }

  .nav-burger {
    display: inline-flex;
  }
}

@media (max-width: 640px) {
  body { font-size: 15.5px; }
  .wrap { padding: 0 20px; }
  section { padding: 64px 0 6px; }
  .hero { padding-top: calc(var(--nav-h) + 44px); }
  .proj-grid { grid-template-columns: 1fr; }
  .skills-grid { grid-template-columns: 1fr; }
  .stats { gap: 12px; }
  .stat { padding: 16px 18px; }
  .pub { grid-template-columns: 1fr; gap: 6px; padding: 18px 20px; }
  .portrait .badge-card { left: 50%; transform: translateX(-50%); bottom: -18px; }
  .tl-date { margin-left: 0; }
  .foot-note { justify-content: center; text-align: center; }
}