/* ============================================================
   Palash Thakur — Portfolio
   Design system: CSS custom properties, dark default + light
   ============================================================ */

:root {
  --bg: #070b14;
  --bg-soft: #0c1322;
  --surface: rgba(255, 255, 255, 0.04);
  --surface-hover: rgba(255, 255, 255, 0.07);
  --border: rgba(255, 255, 255, 0.09);
  --border-strong: rgba(255, 255, 255, 0.16);
  --text: #e7ecf5;
  --text-soft: #9aa7bd;
  --text-faint: #66738a;
  --accent: #38bdf8;
  --accent-2: #818cf8;
  --accent-3: #c084fc;
  --gradient: linear-gradient(120deg, #38bdf8, #818cf8 55%, #c084fc);
  --glow-1: rgba(56, 189, 248, 0.14);
  --glow-2: rgba(129, 140, 248, 0.12);
  --nav-bg: rgba(7, 11, 20, 0.72);
  --card-shadow: 0 18px 50px -18px rgba(0, 0, 0, 0.55);
  --chip-bg: rgba(56, 189, 248, 0.1);
  --chip-text: #7dd3fc;
  --radius: 18px;
  --font-display: "Sora", "Inter", sans-serif;
  --font-body: "Inter", system-ui, sans-serif;
}

[data-theme="light"] {
  --bg: #f5f7fc;
  --bg-soft: #eceff7;
  --surface: #ffffff;
  --surface-hover: #ffffff;
  --border: rgba(15, 30, 60, 0.1);
  --border-strong: rgba(15, 30, 60, 0.18);
  --text: #16213a;
  --text-soft: #4a5872;
  --text-faint: #7c889e;
  --accent: #0284c7;
  --accent-2: #4f46e5;
  --accent-3: #9333ea;
  --gradient: linear-gradient(120deg, #0284c7, #4f46e5 55%, #9333ea);
  --glow-1: rgba(2, 132, 199, 0.1);
  --glow-2: rgba(79, 70, 229, 0.08);
  --nav-bg: rgba(245, 247, 252, 0.8);
  --card-shadow: 0 18px 45px -20px rgba(30, 50, 90, 0.25);
  --chip-bg: rgba(2, 132, 199, 0.08);
  --chip-text: #0369a1;
}

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

html { scroll-behavior: smooth; scroll-padding-top: 90px; }

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  transition: background 0.4s ease, color 0.4s ease;
  overflow-x: hidden;
}

::selection { background: rgba(56, 189, 248, 0.3); }

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

h1, h2, h3, h4 { font-family: var(--font-display); line-height: 1.2; }

.container { max-width: 1140px; margin: 0 auto; padding: 0 1.5rem; }

/* ---------- Scroll progress ---------- */
.scroll-progress {
  position: fixed; top: 0; left: 0; height: 3px; width: 100%; z-index: 200;
  background: var(--gradient); transform-origin: 0 50%; transform: scaleX(0);
  pointer-events: none;
}

/* ---------- Background ornaments ---------- */
.bg-grid {
  position: fixed; inset: 0; z-index: -2; pointer-events: none;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 90% 60% at 50% 0%, black 10%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 90% 60% at 50% 0%, black 10%, transparent 75%);
  opacity: 0.5;
}
.bg-orbs { position: fixed; inset: 0; z-index: -3; pointer-events: none; overflow: hidden; }
.orb { position: absolute; border-radius: 50%; filter: blur(90px); }
.orb-1 { width: 480px; height: 480px; top: -160px; left: -120px; background: var(--glow-1); }
.orb-2 { width: 420px; height: 420px; top: 30%; right: -160px; background: var(--glow-2); }
.orb-3 { width: 380px; height: 380px; bottom: -140px; left: 35%; background: var(--glow-1); }

/* ---------- Navigation ---------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
  background: var(--nav-bg);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s ease;
}
.nav.scrolled { border-bottom-color: var(--border); }
.nav-inner {
  max-width: 1140px; margin: 0 auto; padding: 0.9rem 1.5rem;
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
}
.nav-logo {
  font-family: var(--font-display); font-weight: 700; font-size: 1.15rem;
  text-decoration: none; letter-spacing: -0.02em;
}
.nav-logo span { background: var(--gradient); -webkit-background-clip: text; background-clip: text; color: transparent; }
.nav-links { display: flex; align-items: center; gap: 0.25rem; list-style: none; }
.nav-links a {
  text-decoration: none; color: var(--text-soft); font-size: 0.92rem; font-weight: 500;
  padding: 0.45rem 0.85rem; border-radius: 10px; transition: color 0.2s, background 0.2s;
}
.nav-links a:hover { color: var(--text); background: var(--surface); }
.nav-links a.active { color: var(--accent); }
.nav-actions { display: flex; align-items: center; gap: 0.6rem; }

.btn {
  display: inline-flex; align-items: center; gap: 0.5rem;
  font-family: var(--font-body); font-weight: 600; font-size: 0.92rem;
  padding: 0.65rem 1.3rem; border-radius: 12px; text-decoration: none;
  border: 1px solid transparent; cursor: pointer; transition: transform 0.2s, box-shadow 0.2s, background 0.2s, border-color 0.2s;
}
.btn-primary { background: var(--gradient); color: #fff; box-shadow: 0 8px 24px -8px rgba(99, 102, 241, 0.5); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 30px -8px rgba(99, 102, 241, 0.65); }
.btn-ghost { background: var(--surface); border-color: var(--border); color: var(--text); }
.btn-ghost:hover { border-color: var(--border-strong); background: var(--surface-hover); transform: translateY(-2px); }
.btn-sm { padding: 0.45rem 0.95rem; font-size: 0.85rem; border-radius: 10px; }

.theme-toggle, .nav-burger {
  width: 38px; height: 38px; border-radius: 10px; border: 1px solid var(--border);
  background: var(--surface); color: var(--text-soft); cursor: pointer;
  display: inline-flex; align-items: center; justify-content: center; font-size: 1rem;
  transition: color 0.2s, border-color 0.2s, transform 0.2s;
}
.theme-toggle:hover, .nav-burger:hover { color: var(--accent); border-color: var(--border-strong); transform: translateY(-1px); }
.nav-burger { display: none; }

/* ---------- Hero ---------- */
.hero { min-height: 100vh; display: flex; align-items: center; padding: 7.5rem 0 4rem; position: relative; }
.hero-content { max-width: 780px; }
.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 0.55rem;
  font-size: 0.85rem; font-weight: 600; color: var(--chip-text);
  background: var(--chip-bg); border: 1px solid var(--border);
  padding: 0.4rem 0.95rem; border-radius: 999px; margin-bottom: 1.4rem;
}
.hero-eyebrow .dot { width: 8px; height: 8px; border-radius: 50%; background: #34d399; box-shadow: 0 0 0 4px rgba(52, 211, 153, 0.18); animation: pulse 2.2s infinite; }
@keyframes pulse { 0%, 100% { box-shadow: 0 0 0 0 rgba(52, 211, 153, 0.35); } 50% { box-shadow: 0 0 0 6px rgba(52, 211, 153, 0); } }

.hero h1 {
  font-size: clamp(2.6rem, 6vw, 4.4rem); font-weight: 800; letter-spacing: -0.03em;
  margin-bottom: 1rem;
}
.hero h1 .grad {
  background: linear-gradient(120deg, #38bdf8, #818cf8 30%, #c084fc 50%, #818cf8 70%, #38bdf8);
  background-size: 220% 100%;
  -webkit-background-clip: text; background-clip: text; color: transparent;
  animation: shimmer 7s ease-in-out infinite;
}
[data-theme="light"] .hero h1 .grad {
  background: linear-gradient(120deg, #0284c7, #4f46e5 30%, #9333ea 50%, #4f46e5 70%, #0284c7);
  background-size: 220% 100%;
  -webkit-background-clip: text; background-clip: text; color: transparent;
  animation: shimmer 7s ease-in-out infinite;
}
@keyframes shimmer { 0%, 100% { background-position: 0% 50%; } 50% { background-position: 100% 50%; } }
.hero-role {
  font-family: var(--font-display); font-size: clamp(1.1rem, 2.4vw, 1.45rem);
  color: var(--text-soft); font-weight: 600; margin-bottom: 1.4rem; min-height: 1.6em;
}
.hero-role .caret { display: inline-block; width: 2px; height: 1.05em; background: var(--accent); vertical-align: text-bottom; margin-left: 3px; animation: blink 1s step-end infinite; }
@keyframes blink { 50% { opacity: 0; } }

.hero-desc { font-size: 1.08rem; color: var(--text-soft); max-width: 640px; margin-bottom: 2.2rem; }
.hero-desc strong { color: var(--text); font-weight: 600; }
.hero-ctas { display: flex; flex-wrap: wrap; gap: 0.9rem; margin-bottom: 2.6rem; }

.hero-socials { display: flex; gap: 0.8rem; }
.social-pill {
  width: 44px; height: 44px; border-radius: 12px;
  border: 1px solid var(--border); background: var(--surface);
  display: inline-flex; align-items: center; justify-content: center;
  color: var(--text-soft); font-size: 1.15rem; text-decoration: none;
  transition: color 0.2s, border-color 0.2s, transform 0.2s, box-shadow 0.2s;
}
.social-pill:hover { color: var(--accent); border-color: var(--accent); transform: translateY(-3px); box-shadow: 0 10px 24px -10px var(--glow-1); }

/* stats strip */
.hero-stats {
  margin-top: 3.2rem; display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px;
  background: var(--border); border: 1px solid var(--border); border-radius: var(--radius);
  overflow: hidden; max-width: 860px;
}
.stat { background: var(--bg-soft); padding: 1.4rem 1.2rem; }
.stat-num { font-family: var(--font-display); font-size: 1.9rem; font-weight: 800; background: var(--gradient); -webkit-background-clip: text; background-clip: text; color: transparent; }
.stat-label { font-size: 0.82rem; color: var(--text-faint); margin-top: 0.2rem; font-weight: 500; }

/* ---------- Sections ---------- */
.section { padding: 6rem 0; position: relative; }
.section-head { margin-bottom: 3rem; }
.section-kicker {
  font-size: 0.8rem; font-weight: 700; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--accent); margin-bottom: 0.6rem;
}
.section-title { font-size: clamp(1.8rem, 3.6vw, 2.6rem); font-weight: 800; letter-spacing: -0.02em; }
.section-sub { color: var(--text-soft); margin-top: 0.8rem; max-width: 640px; }

/* reveal animation (stagger handled in JS via setTimeout) */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ---------- 3D tilt + glare (Apple-TV-style cards) ---------- */
.tilt {
  transform-style: preserve-3d;
  will-change: transform;
  position: relative;
}
.tilt.tilting.tilting {
  transition: opacity 0.7s ease; /* keep reveal fade, drop transform easing for live tracking */
  transform: perspective(900px) rotateX(var(--rx, 0deg)) rotateY(var(--ry, 0deg)) translateY(-6px) scale(1.015);
  border-color: var(--border-strong);
  box-shadow: var(--card-shadow);
}
.tilt .glare {
  content: ""; position: absolute; inset: 0; z-index: 3; border-radius: inherit;
  background: radial-gradient(420px circle at var(--mx, 50%) var(--my, 50%), rgba(255, 255, 255, 0.14), transparent 65%);
  opacity: 0; transition: opacity 0.3s; pointer-events: none;
}
.tilt.tilting .glare { opacity: 1; }
[data-theme="light"] .tilt .glare {
  background: radial-gradient(420px circle at var(--mx, 50%) var(--my, 50%), rgba(79, 70, 229, 0.08), transparent 65%);
}

/* ---------- Spotlight border glow (Linear/Vercel-style) ---------- */
.spot { position: relative; overflow: hidden; }
.spot::before {
  content: ""; position: absolute; inset: 0; border-radius: inherit; z-index: 0;
  background: radial-gradient(360px circle at var(--mx, 50%) var(--my, 50%), var(--glow-1), transparent 70%);
  opacity: 0; transition: opacity 0.35s; pointer-events: none;
}
.spot:hover::before { opacity: 1; }
.spot > * { position: relative; z-index: 1; }

/* ---------- About ---------- */
.about-grid { display: grid; grid-template-columns: 320px 1fr; gap: 3rem; align-items: start; }
.about-photo-wrap { position: sticky; top: 110px; }
.about-photo {
  position: relative; border-radius: 24px; overflow: hidden;
  border: 1px solid var(--border); box-shadow: var(--card-shadow);
}
.about-photo::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 55%, rgba(7, 11, 20, 0.55));
  pointer-events: none;
}
[data-theme="light"] .about-photo::after { background: none; }
.about-photo img { width: 100%; aspect-ratio: 1; object-fit: cover; }
.about-badges { display: flex; flex-direction: column; gap: 0.7rem; margin-top: 1.2rem; }
.about-badge {
  display: flex; align-items: center; gap: 0.7rem; font-size: 0.9rem; color: var(--text-soft);
  background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 0.65rem 0.9rem;
}
.about-badge i { color: var(--accent); width: 18px; text-align: center; }

.about-text p { color: var(--text-soft); margin-bottom: 1.1rem; font-size: 1.02rem; }
.about-text p strong { color: var(--text); font-weight: 600; }
.about-text .lede { font-size: 1.18rem; color: var(--text); }

/* ---------- Experience timeline ---------- */
.timeline { position: relative; max-width: 860px; }
.timeline::before {
  content: ""; position: absolute; left: 9px; top: 6px; bottom: 6px; width: 2px;
  background: linear-gradient(180deg, var(--accent), var(--accent-2), transparent);
  opacity: 0.45;
}
.tl-item { position: relative; padding: 0 0 2.6rem 2.6rem; }
.tl-item:last-child { padding-bottom: 0; }
.tl-dot {
  position: absolute; left: 0; top: 6px; width: 20px; height: 20px; border-radius: 50%;
  background: var(--bg); border: 2px solid var(--accent);
  display: flex; align-items: center; justify-content: center;
}
.tl-dot::after { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--gradient); }
.tl-card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 1.6rem 1.8rem; transition: border-color 0.25s, transform 0.25s, box-shadow 0.25s;
}
.tl-card:hover { border-color: var(--border-strong); transform: translateY(-3px); box-shadow: var(--card-shadow); }
.tl-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 0.6rem 1rem; margin-bottom: 0.5rem; }
.tl-when {
  font-size: 0.78rem; font-weight: 700; color: var(--chip-text); background: var(--chip-bg);
  padding: 0.25rem 0.75rem; border-radius: 999px; letter-spacing: 0.04em;
}
.tl-where { font-size: 0.88rem; color: var(--text-faint); font-weight: 500; }
.tl-card h3 { font-size: 1.25rem; margin-bottom: 0.25rem; }
.tl-org { color: var(--accent); font-weight: 600; font-size: 0.95rem; margin-bottom: 0.8rem; }
.tl-card ul { list-style: none; display: grid; gap: 0.5rem; }
.tl-card li { color: var(--text-soft); font-size: 0.95rem; padding-left: 1.3rem; position: relative; }
.tl-card li::before { content: "▹"; position: absolute; left: 0; color: var(--accent); }
.tl-card li strong { color: var(--text); font-weight: 600; }

/* ---------- Projects ---------- */
.project-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(310px, 1fr)); gap: 1.6rem; }
.project-card {
  display: flex; flex-direction: column; text-decoration: none;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  overflow: hidden; transition: transform 0.3s, border-color 0.3s, box-shadow 0.3s;
}
.project-card:hover { transform: translateY(-6px); border-color: var(--border-strong); box-shadow: var(--card-shadow); }
.project-thumb { position: relative; overflow: hidden; aspect-ratio: 16 / 9; }
.project-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.45s ease; }
.project-card:hover .project-thumb img { transform: scale(1.05); }
.project-body { padding: 1.4rem 1.5rem 1.6rem; display: flex; flex-direction: column; flex: 1; }
.project-top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 0.6rem; }
.project-top h3 { font-size: 1.18rem; }
.project-top i { color: var(--text-faint); font-size: 0.95rem; transition: color 0.2s, transform 0.2s; }
.project-card:hover .project-top i { color: var(--accent); transform: translate(2px, -2px); }
.project-body p { color: var(--text-soft); font-size: 0.93rem; flex: 1; }
.tag-row { display: flex; flex-wrap: wrap; gap: 0.45rem; margin-top: 1.1rem; }
.tag {
  font-size: 0.73rem; font-weight: 600; padding: 0.28rem 0.7rem; border-radius: 999px;
  background: var(--chip-bg); color: var(--chip-text); border: 1px solid var(--border);
}

/* ---------- Open source ---------- */
.oss-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(330px, 1fr)); gap: 1.6rem; }
.oss-card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 1.8rem; transition: transform 0.3s, border-color 0.3s, box-shadow 0.3s;
}
.oss-card:hover { transform: translateY(-5px); border-color: var(--border-strong); box-shadow: var(--card-shadow); }
.oss-icon {
  width: 52px; height: 52px; border-radius: 14px; background: var(--chip-bg);
  border: 1px solid var(--border); display: flex; align-items: center; justify-content: center;
  font-size: 1.4rem; color: var(--accent); margin-bottom: 1.1rem;
}
.oss-card h3 { font-size: 1.2rem; margin-bottom: 0.5rem; }
.oss-card > p { color: var(--text-soft); font-size: 0.94rem; margin-bottom: 1.1rem; }
.oss-links { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.oss-link {
  display: inline-flex; align-items: center; gap: 0.4rem; text-decoration: none;
  font-size: 0.82rem; font-weight: 600; color: var(--accent);
  padding: 0.35rem 0.8rem; border-radius: 999px; border: 1px solid var(--border);
  background: var(--chip-bg); transition: border-color 0.2s, transform 0.2s;
}
.oss-link:hover { border-color: var(--accent); transform: translateY(-2px); }

/* ---------- Skills ---------- */
.skills-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 1.4rem; }
.skill-group {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 1.5rem 1.6rem; transition: border-color 0.25s, transform 0.25s;
}
.skill-group:hover { border-color: var(--border-strong); transform: translateY(-3px); }
.skill-group h3 {
  display: flex; align-items: center; gap: 0.6rem;
  font-size: 1rem; margin-bottom: 1rem; color: var(--text);
}
.skill-group h3 i { color: var(--accent); }
.skill-chips { display: flex; flex-wrap: wrap; gap: 0.45rem; }
.chip {
  font-size: 0.82rem; font-weight: 500; color: var(--text-soft);
  background: var(--bg-soft); border: 1px solid var(--border);
  padding: 0.32rem 0.8rem; border-radius: 999px; transition: color 0.2s, border-color 0.2s, transform 0.2s;
}
.chip:hover { color: var(--accent); border-color: var(--accent); transform: translateY(-2px); }

/* ---------- Media / talks ---------- */
.media-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.6rem; }
.video-card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  overflow: hidden; transition: transform 0.3s, border-color 0.3s, box-shadow 0.3s;
}
.video-card:hover { transform: translateY(-4px); border-color: var(--border-strong); box-shadow: var(--card-shadow); }
.video-frame { aspect-ratio: 16 / 9; }
.video-frame iframe { width: 100%; height: 100%; border: 0; display: block; }
.video-caption { padding: 1.1rem 1.4rem; }
.video-caption strong { display: block; font-family: var(--font-display); margin-bottom: 0.2rem; }
.video-caption span { font-size: 0.88rem; color: var(--text-soft); }

.pub-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(290px, 1fr)); gap: 1.4rem; margin-top: 2.4rem; }
.pub-card {
  display: flex; gap: 1rem; align-items: flex-start; text-decoration: none;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 1.3rem 1.4rem; transition: transform 0.25s, border-color 0.25s, box-shadow 0.25s;
}
.pub-card:hover { transform: translateY(-4px); border-color: var(--border-strong); box-shadow: var(--card-shadow); }
.pub-icon {
  flex: 0 0 auto; width: 44px; height: 44px; border-radius: 12px;
  background: var(--chip-bg); border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center; color: var(--accent); font-size: 1.1rem;
}
.pub-card h4 { font-size: 1rem; margin-bottom: 0.2rem; }
.pub-card p { font-size: 0.85rem; color: var(--text-soft); }

/* honors strip */
.honor-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 1.4rem; margin-top: 2.4rem; }
.honor {
  display: flex; gap: 0.9rem; align-items: flex-start;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.3rem 1.4rem;
}
.honor i { color: var(--accent); font-size: 1.3rem; margin-top: 0.15rem; }
.honor strong { display: block; font-size: 0.95rem; font-family: var(--font-display); }
.honor span { font-size: 0.85rem; color: var(--text-soft); }

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: 2.4rem; align-items: start; }
.contact-card, .contact-form-card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 2rem 2.1rem;
}
.contact-card h3, .contact-form-card h3 { font-size: 1.35rem; margin-bottom: 0.7rem; }
.contact-card > p { color: var(--text-soft); margin-bottom: 1.6rem; font-size: 0.97rem; }
.contact-list { display: grid; gap: 1rem; }
.contact-item {
  display: flex; align-items: center; gap: 0.9rem; text-decoration: none;
  color: var(--text); font-weight: 500; font-size: 0.97rem; transition: color 0.2s, transform 0.2s;
}
.contact-item:hover { color: var(--accent); transform: translateX(4px); }
.contact-item i {
  width: 42px; height: 42px; border-radius: 12px; flex: 0 0 auto;
  background: var(--chip-bg); border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center; color: var(--accent); font-size: 1.05rem;
}

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.form-group { margin-bottom: 1.1rem; }
.form-group label { display: block; font-size: 0.85rem; font-weight: 600; margin-bottom: 0.4rem; color: var(--text-soft); }
.form-group input, .form-group textarea {
  width: 100%; background: var(--bg-soft); border: 1px solid var(--border); border-radius: 12px;
  padding: 0.8rem 1rem; font-size: 0.95rem; color: var(--text); font-family: var(--font-body);
  transition: border-color 0.2s, box-shadow 0.2s;
}
.form-group input:focus, .form-group textarea:focus {
  outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--glow-1);
}
.form-group textarea { min-height: 140px; resize: vertical; }
.form-note { display: block; margin-top: 0.9rem; font-size: 0.78rem; color: var(--text-faint); }

/* ---------- Footer ---------- */
.footer { border-top: 1px solid var(--border); padding: 2.6rem 0; margin-top: 2rem; }
.footer-inner {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 1.2rem;
}
.footer p { color: var(--text-faint); font-size: 0.88rem; }
.footer p span { background: var(--gradient); -webkit-background-clip: text; background-clip: text; color: transparent; font-weight: 600; }
.footer-socials { display: flex; gap: 0.7rem; }

/* back to top */
#backTop {
  position: fixed; right: 24px; bottom: 24px; z-index: 90;
  width: 46px; height: 46px; border-radius: 14px; border: 1px solid var(--border);
  background: var(--surface); backdrop-filter: blur(10px); color: var(--text-soft);
  font-size: 1.05rem; cursor: pointer; opacity: 0; pointer-events: none; transform: translateY(10px);
  transition: opacity 0.3s, transform 0.3s, color 0.2s, border-color 0.2s;
}
#backTop.show { opacity: 1; pointer-events: auto; transform: translateY(0); }
#backTop:hover { color: var(--accent); border-color: var(--accent); }

/* ---------- Responsive ---------- */
@media (max-width: 920px) {
  .about-grid { grid-template-columns: 1fr; }
  .about-photo-wrap { position: static; max-width: 340px; }
  .media-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 760px) {
  .nav-links {
    position: fixed; top: 64px; left: 0; right: 0; flex-direction: column; align-items: stretch;
    background: var(--nav-bg); backdrop-filter: blur(18px); -webkit-backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--border); padding: 1rem 1.5rem 1.4rem; gap: 0.3rem;
    transform: translateY(-130%); transition: transform 0.35s ease; z-index: -1;
  }
  .nav-links.open { transform: translateY(0); }
  .nav-links a { padding: 0.75rem 1rem; font-size: 1rem; }
  .nav-burger { display: inline-flex; }
  .nav-resume { display: none; }
  .section { padding: 4.2rem 0; }
  .form-row { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
  .reveal { opacity: 1; transform: none; }
}