/* =========================================================================
   [Your Name] — Personal Website
   Design system + components. Custom CSS (no framework) for top Lighthouse
   scores and full control over the premium aesthetic.
   ========================================================================= */

/* ---------- 1. Design tokens ---------- */
:root {
  /* Brand gradient stops */
  --brand-1: #6366f1; /* indigo  */
  --brand-2: #8b5cf6; /* violet  */
  --brand-3: #06b6d4; /* cyan    */
  --gradient: linear-gradient(120deg, var(--brand-1), var(--brand-2) 50%, var(--brand-3));

  /* Light theme (default) */
  --bg: #f7f8fc;
  --bg-elev: #ffffff;
  --surface: rgba(255, 255, 255, 0.7);
  --surface-border: rgba(15, 23, 42, 0.08);
  --text: #0f172a;
  --text-soft: #475569;
  --text-faint: #94a3b8;
  --accent: #6366f1;
  --accent-contrast: #ffffff;
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 10px 30px -12px rgba(15, 23, 42, 0.18);
  --shadow-lg: 0 30px 60px -20px rgba(15, 23, 42, 0.25);
  --ring: rgba(99, 102, 241, 0.45);

  /* Typography */
  --font-sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-display: "Space Grotesk", var(--font-sans);

  /* Layout */
  --maxw: 1140px;
  --radius: 18px;
  --radius-sm: 12px;
  --gutter: clamp(1.25rem, 5vw, 3rem);

  /* Motion */
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --dur: 0.5s;
}

:root[data-theme="dark"] {
  --bg: #0a0a12;
  --bg-elev: #11121d;
  --surface: rgba(22, 24, 38, 0.6);
  --surface-border: rgba(255, 255, 255, 0.09);
  --text: #f1f5f9;
  --text-soft: #b6c0d4;
  --text-faint: #6b7488;
  --accent: #818cf8;
  --accent-contrast: #0a0a12;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 10px 30px -12px rgba(0, 0, 0, 0.6);
  --shadow-lg: 0 30px 70px -20px rgba(0, 0, 0, 0.7);
  --ring: rgba(129, 140, 248, 0.5);
}

/* ---------- 2. Reset & base ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

* { margin: 0; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  scroll-padding-top: 90px; /* offset for sticky navbar on anchor jumps */
}

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

/* Ambient gradient mesh behind everything */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(40rem 40rem at 80% -10%, rgba(99, 102, 241, 0.16), transparent 60%),
    radial-gradient(35rem 35rem at 0% 20%, rgba(6, 182, 212, 0.12), transparent 55%),
    radial-gradient(30rem 30rem at 60% 100%, rgba(139, 92, 246, 0.12), transparent 60%);
  pointer-events: none;
}

img { max-width: 100%; display: block; height: auto; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; border: none; background: none; color: inherit; }
ul { list-style: none; padding: 0; }
:focus-visible {
  outline: 3px solid var(--ring);
  outline-offset: 3px;
  border-radius: 6px;
}

h1, h2, h3, h4 { font-family: var(--font-display); line-height: 1.12; font-weight: 700; letter-spacing: -0.02em; }

/* Accessibility helpers */
.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; top: -100px; left: 1rem; z-index: 200;
  background: var(--accent); color: var(--accent-contrast);
  padding: 0.7rem 1.2rem; border-radius: 10px; font-weight: 600;
  transition: top 0.25s var(--ease);
}
.skip-link:focus { top: 1rem; }

/* ---------- 3. Layout primitives ---------- */
.container { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: var(--gutter); }

section { padding-block: clamp(4rem, 9vw, 7.5rem); position: relative; }

.section-head { max-width: 640px; margin-bottom: 3rem; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 0.5rem;
  font-family: var(--font-display); font-size: 0.78rem; font-weight: 600;
  letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--accent); margin-bottom: 1rem;
}
.eyebrow::before { content: ""; width: 1.75rem; height: 2px; background: var(--gradient); border-radius: 2px; }
.section-head h2 { font-size: clamp(1.9rem, 4.5vw, 2.8rem); }
.section-head p { color: var(--text-soft); margin-top: 1rem; font-size: 1.05rem; }

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

/* Glass card */
.glass {
  background: var(--surface);
  border: 1px solid var(--surface-border);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
  backdrop-filter: blur(16px) saturate(140%);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
}

/* ---------- 4. Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 0.55rem;
  padding: 0.85rem 1.5rem; border-radius: 999px;
  font-weight: 600; font-size: 0.95rem;
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease), background 0.25s var(--ease), color 0.25s var(--ease);
  will-change: transform;
}
.btn svg { width: 1.1em; height: 1.1em; }
.btn-primary {
  background: var(--gradient); color: #fff;
  box-shadow: 0 12px 28px -10px rgba(99, 102, 241, 0.7);
  background-size: 160% 160%;
}
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 18px 34px -10px rgba(99, 102, 241, 0.85); background-position: 100% 50%; }
.btn-ghost {
  background: var(--surface); border: 1px solid var(--surface-border); color: var(--text);
  -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px);
}
.btn-ghost:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); border-color: var(--accent); }

/* ---------- 5. Navbar ---------- */
.navbar {
  position: fixed; top: 0; inset-inline: 0; z-index: 100;
  transition: background 0.35s var(--ease), box-shadow 0.35s var(--ease), border-color 0.35s var(--ease);
  border-bottom: 1px solid transparent;
}
.navbar.scrolled {
  background: var(--surface);
  -webkit-backdrop-filter: blur(18px) saturate(160%);
  backdrop-filter: blur(18px) saturate(160%);
  border-bottom-color: var(--surface-border);
  box-shadow: var(--shadow-sm);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.brand { display: flex; align-items: center; gap: 0.6rem; font-family: var(--font-display); font-weight: 700; font-size: 1.15rem; }
.brand-mark {
  width: 34px; height: 34px; border-radius: 10px; background: var(--gradient);
  display: grid; place-items: center; color: #fff; font-weight: 700; box-shadow: var(--shadow-sm);
}
.nav-links { display: flex; align-items: center; gap: 0.35rem; }
.nav-links a {
  padding: 0.5rem 0.9rem; border-radius: 999px; font-size: 0.92rem; font-weight: 500;
  color: var(--text-soft); position: relative; transition: color 0.25s, background 0.25s;
}
.nav-links a:hover { color: var(--text); }
.nav-links a.active { color: var(--text); background: var(--surface); }
.nav-actions { display: flex; align-items: center; gap: 0.5rem; }

.icon-btn {
  width: 42px; height: 42px; border-radius: 12px; display: grid; place-items: center;
  background: var(--surface); border: 1px solid var(--surface-border); color: var(--text);
  transition: transform 0.25s var(--ease), background 0.25s, box-shadow 0.25s;
}
.icon-btn:hover { transform: translateY(-2px); box-shadow: var(--shadow-sm); }
.icon-btn svg { width: 20px; height: 20px; }
.theme-toggle .moon { display: none; }
:root[data-theme="dark"] .theme-toggle .sun { display: none; }
:root[data-theme="dark"] .theme-toggle .moon { display: block; }

.nav-toggle { display: none; }

/* Mobile nav */
@media (max-width: 860px) {
  .nav-links {
    position: fixed; inset: 72px 0 auto 0;
    flex-direction: column; align-items: stretch; gap: 0.25rem;
    padding: 1rem var(--gutter) 1.5rem;
    background: var(--bg-elev); border-bottom: 1px solid var(--surface-border);
    box-shadow: var(--shadow-lg);
    transform: translateY(-130%); transition: transform 0.4s var(--ease); pointer-events: none;
  }
  .nav-links.open { transform: translateY(0); pointer-events: auto; }
  .nav-links a { padding: 0.85rem 1rem; font-size: 1rem; }
  .nav-toggle { display: grid; }
}

/* ---------- 6. Hero ---------- */
.hero { padding-top: clamp(7rem, 16vh, 11rem); min-height: 92vh; display: flex; align-items: center; }
.hero-grid { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 3rem; align-items: center; width: 100%; }
.badge {
  display: inline-flex; align-items: center; gap: 0.6rem;
  padding: 0.45rem 0.95rem; border-radius: 999px; font-size: 0.85rem; font-weight: 500;
  background: var(--surface); border: 1px solid var(--surface-border); color: var(--text-soft);
}
.badge .dot { width: 8px; height: 8px; border-radius: 50%; background: #22c55e; box-shadow: 0 0 0 4px rgba(34, 197, 94, 0.18); }
.hero h1 { font-size: clamp(2.6rem, 7vw, 4.6rem); margin: 1.4rem 0 0.4rem; }
.hero .role { font-size: clamp(1.25rem, 3.5vw, 1.8rem); font-family: var(--font-display); color: var(--text-soft); font-weight: 600; }
.hero .tagline { font-size: 1.12rem; color: var(--text-soft); max-width: 46ch; margin: 1.4rem 0 2.2rem; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 1rem; }
.hero-stats { display: flex; gap: 2.2rem; margin-top: 2.8rem; flex-wrap: wrap; }
.hero-stats .num { font-family: var(--font-display); font-size: 1.9rem; font-weight: 700; }
.hero-stats .lbl { font-size: 0.85rem; color: var(--text-faint); }

/* Hero visual: floating glass portrait + orbit */
.hero-visual { position: relative; display: grid; place-items: center; }
.portrait {
  width: min(360px, 80%); aspect-ratio: 4/5; border-radius: 28px; overflow: hidden;
  position: relative; box-shadow: var(--shadow-lg); border: 1px solid var(--surface-border);
  background: var(--gradient);
}
.portrait img { width: 100%; height: 100%; object-fit: cover; }

/* Black-and-white sketch portrait: render as a framed art piece on a deep
   black panel with a soft gradient glow, so the on-black artwork blends. */
.portrait--photo {
  background: radial-gradient(120% 90% at 50% 18%, #15172a 0%, #07070d 70%);
  border-color: rgba(255, 255, 255, 0.12);
}
.portrait--photo::after {
  content: ""; position: absolute; inset: 0; border-radius: inherit; pointer-events: none;
  box-shadow: inset 0 0 70px 12px rgba(99, 102, 241, 0.18);
}
/* The artwork sits centered on a large black canvas; cover crops the surplus
   black (lossless visually) so the face reads large and framed. */
.portrait--photo img { object-fit: cover; object-position: center 46%; transform: scale(1.18); }
.float-card {
  position: absolute; padding: 0.8rem 1rem; border-radius: 14px;
  display: flex; align-items: center; gap: 0.65rem; font-size: 0.85rem; font-weight: 600;
  animation: float 6s ease-in-out infinite;
}
.float-card.one { top: 8%; left: -6%; }
.float-card.two { bottom: 10%; right: -8%; animation-delay: -3s; }
.float-card .ic { width: 34px; height: 34px; border-radius: 10px; background: var(--gradient); display: grid; place-items: center; color: #fff; }
.float-card .ic svg { width: 18px; height: 18px; }
@keyframes float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-14px); } }

.marquee {
  margin-top: 4rem; overflow: hidden; -webkit-mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
}
.marquee ul { display: flex; gap: 3rem; width: max-content; animation: scroll-x 28s linear infinite; }
.marquee li { font-family: var(--font-display); font-weight: 600; color: var(--text-faint); font-size: 1.1rem; white-space: nowrap; }
@keyframes scroll-x { to { transform: translateX(-50%); } }

@media (max-width: 860px) {
  .hero-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .hero-visual { order: -1; }
  .portrait { width: min(280px, 70%); }
}

/* ---------- 7. Cards / grids ---------- */
.grid { display: grid; gap: 1.5rem; }
.cols-2 { grid-template-columns: repeat(2, 1fr); }
.cols-3 { grid-template-columns: repeat(3, 1fr); }
.cols-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 980px) { .cols-3, .cols-4 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 620px) { .cols-2, .cols-3, .cols-4 { grid-template-columns: 1fr; } }

.card { padding: 1.6rem; transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease), border-color 0.35s; }
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: var(--accent); }

/* About */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; align-items: start; }
@media (max-width: 860px) { .about-grid { grid-template-columns: 1fr; } }
.about-bio p { color: var(--text-soft); margin-bottom: 1.1rem; }
.about-bio p strong { color: var(--text); }
.fact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin-top: 1.8rem; }
.fact { padding: 1.2rem; }
.fact .num { font-family: var(--font-display); font-size: 1.7rem; font-weight: 700; }
.fact .lbl { font-size: 0.85rem; color: var(--text-faint); }

/* Timeline */
.timeline { position: relative; padding-left: 2rem; }
.timeline::before { content: ""; position: absolute; left: 7px; top: 6px; bottom: 6px; width: 2px; background: linear-gradient(var(--brand-1), var(--brand-3)); border-radius: 2px; opacity: 0.4; }
.tl-item { position: relative; padding: 0 0 1.8rem 0.6rem; }
.tl-item::before { content: ""; position: absolute; left: -2rem; top: 5px; width: 16px; height: 16px; border-radius: 50%; background: var(--bg); border: 3px solid var(--accent); box-shadow: 0 0 0 4px var(--surface); }
.tl-item .when { font-size: 0.8rem; font-weight: 600; color: var(--accent); letter-spacing: 0.04em; }
.tl-item h4 { font-size: 1.1rem; margin: 0.25rem 0; }
.tl-item .org { color: var(--text-soft); font-size: 0.95rem; }
.tl-item p { color: var(--text-soft); font-size: 0.92rem; margin-top: 0.4rem; }

/* ---------- 8. Projects ---------- */
.filters { display: flex; flex-wrap: wrap; gap: 0.6rem; margin-bottom: 2rem; }
.filter-btn {
  padding: 0.5rem 1.1rem; border-radius: 999px; font-size: 0.9rem; font-weight: 500;
  background: var(--surface); border: 1px solid var(--surface-border); color: var(--text-soft);
  transition: all 0.25s var(--ease);
}
.filter-btn:hover { color: var(--text); border-color: var(--accent); }
.filter-btn.active { background: var(--gradient); color: #fff; border-color: transparent; }

.project { padding: 0; overflow: hidden; display: flex; flex-direction: column; }
.project .thumb { aspect-ratio: 16/10; position: relative; overflow: hidden; background: var(--gradient); }
.project .thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s var(--ease); }
.project:hover .thumb img { transform: scale(1.06); }
.project .thumb .overlay {
  position: absolute; inset: 0; display: flex; align-items: flex-end; justify-content: flex-end; gap: 0.5rem;
  padding: 0.9rem; opacity: 0; transition: opacity 0.3s; background: linear-gradient(transparent 50%, rgba(0,0,0,0.5));
}
.project:hover .thumb .overlay { opacity: 1; }
.project .thumb .overlay a { width: 40px; height: 40px; border-radius: 10px; background: rgba(255,255,255,0.92); color: #0f172a; display: grid; place-items: center; transition: transform 0.2s; }
.project .thumb .overlay a:hover { transform: translateY(-3px); }
.project .body { padding: 1.4rem; display: flex; flex-direction: column; flex: 1; }
.project .cat { font-size: 0.75rem; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; color: var(--accent); }
.project h3 { font-size: 1.25rem; margin: 0.5rem 0; }
.project p { color: var(--text-soft); font-size: 0.93rem; flex: 1; }
.tags { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-top: 1rem; }
.tag { font-size: 0.75rem; font-weight: 500; padding: 0.3rem 0.7rem; border-radius: 999px; background: var(--bg); border: 1px solid var(--surface-border); color: var(--text-soft); }
.is-hidden { display: none !important; }

/* ---------- 9. Skills ---------- */
.skill-group { padding: 1.8rem; }
.skill-group h3 { display: flex; align-items: center; gap: 0.6rem; margin-bottom: 1.4rem; font-size: 1.15rem; }
.skill-group h3 .ic { width: 38px; height: 38px; border-radius: 11px; background: var(--gradient); display: grid; place-items: center; color: #fff; }
.skill-group h3 .ic svg { width: 20px; height: 20px; }
.skill { margin-bottom: 1.1rem; }
.skill .row { display: flex; justify-content: space-between; font-size: 0.9rem; font-weight: 500; margin-bottom: 0.4rem; }
.skill .row span:last-child { color: var(--text-faint); }
.bar { height: 8px; border-radius: 999px; background: var(--bg); overflow: hidden; }
.bar > i { display: block; height: 100%; width: 0; border-radius: 999px; background: var(--gradient); transition: width 1.1s var(--ease); }

/* ---------- 10. Resume ---------- */
.resume-actions { display: flex; flex-wrap: wrap; gap: 1rem; margin-bottom: 2.5rem; }
.resume-layout { display: grid; grid-template-columns: 1fr; gap: 2rem; }
.resume-block { padding: 2rem; }
.resume-block h3 { font-size: 1.3rem; margin-bottom: 1.4rem; display: flex; align-items: center; gap: 0.6rem; }
.resume-block h3 .ic { color: var(--accent); display: grid; place-items: center; }
.resume-block h3 .ic svg { width: 22px; height: 22px; }
.exp { padding-bottom: 1.6rem; margin-bottom: 1.6rem; border-bottom: 1px solid var(--surface-border); }
.exp:last-child { border-bottom: none; margin-bottom: 0; padding-bottom: 0; }
.exp .top { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 0.3rem; }
.exp h4 { font-size: 1.1rem; }
.exp .meta { color: var(--accent); font-weight: 600; font-size: 0.85rem; }
.exp .org { color: var(--text-soft); font-weight: 500; }
.exp ul { margin-top: 0.7rem; display: grid; gap: 0.4rem; }
.exp li { position: relative; padding-left: 1.3rem; color: var(--text-soft); font-size: 0.93rem; }
.exp li::before { content: ""; position: absolute; left: 0; top: 0.6em; width: 6px; height: 6px; border-radius: 50%; background: var(--gradient); }
.chips { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.chips .chip { padding: 0.4rem 0.85rem; border-radius: 10px; background: var(--bg); border: 1px solid var(--surface-border); font-size: 0.85rem; font-weight: 500; }
.cert-list { display: grid; gap: 0.8rem; }
.cert-list li { display: flex; align-items: center; gap: 0.7rem; color: var(--text-soft); }
.cert-list li svg { width: 20px; height: 20px; color: var(--accent); flex-shrink: 0; }

/* ---------- 11. Contact ---------- */
.contact-grid { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 2.5rem; align-items: start; }
@media (max-width: 860px) { .contact-grid { grid-template-columns: 1fr; } }
.contact-info { padding: 2rem; }
.contact-info h3 { font-size: 1.4rem; margin-bottom: 0.8rem; }
.contact-info > p { color: var(--text-soft); margin-bottom: 1.6rem; }
.contact-methods { display: grid; gap: 0.9rem; margin-bottom: 1.8rem; }
.contact-methods a { display: flex; align-items: center; gap: 0.9rem; color: var(--text); padding: 0.6rem; border-radius: 12px; transition: background 0.2s; }
.contact-methods a:hover { background: var(--bg); }
.contact-methods .ic { width: 42px; height: 42px; border-radius: 12px; background: var(--surface); border: 1px solid var(--surface-border); display: grid; place-items: center; color: var(--accent); }
.contact-methods .ic svg { width: 20px; height: 20px; }
.contact-methods .label { font-size: 0.78rem; color: var(--text-faint); }
.contact-methods .value { font-weight: 600; }
.socials { display: flex; gap: 0.6rem; }
.socials a { width: 44px; height: 44px; }

.form { padding: 2rem; }
.field { margin-bottom: 1.2rem; }
.field label { display: block; font-size: 0.88rem; font-weight: 600; margin-bottom: 0.45rem; }
.field input, .field textarea {
  width: 100%; padding: 0.85rem 1rem; border-radius: 12px;
  background: var(--bg); border: 1px solid var(--surface-border); color: var(--text);
  font: inherit; font-size: 0.95rem; transition: border-color 0.2s, box-shadow 0.2s;
}
.field textarea { resize: vertical; min-height: 130px; }
.field input:focus, .field textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 4px var(--ring); }
.field .error { color: #ef4444; font-size: 0.8rem; margin-top: 0.35rem; display: none; }
.field.invalid input, .field.invalid textarea { border-color: #ef4444; }
.field.invalid .error { display: block; }
.form-status { margin-top: 1rem; padding: 0.9rem 1.1rem; border-radius: 12px; font-size: 0.9rem; font-weight: 500; display: none; }
.form-status.success { display: block; background: rgba(34, 197, 94, 0.12); color: #16a34a; border: 1px solid rgba(34, 197, 94, 0.3); }
.form-status.fail { display: block; background: rgba(239, 68, 68, 0.12); color: #dc2626; border: 1px solid rgba(239, 68, 68, 0.3); }

/* ---------- 12. Footer ---------- */
.footer { padding-block: 3rem 2rem; border-top: 1px solid var(--surface-border); margin-top: 2rem; }
.footer-grid { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 1.5rem; }
.footer p { color: var(--text-faint); font-size: 0.9rem; }
.footer-links { display: flex; gap: 1.2rem; flex-wrap: wrap; }
.footer-links a { color: var(--text-soft); font-size: 0.9rem; transition: color 0.2s; }
.footer-links a:hover { color: var(--accent); }

/* ---------- 13. Back to top ---------- */
.to-top {
  position: fixed; right: 1.5rem; bottom: 1.5rem; z-index: 90;
  width: 48px; height: 48px; border-radius: 14px; display: grid; place-items: center;
  background: var(--gradient); color: #fff; box-shadow: var(--shadow-md);
  opacity: 0; transform: translateY(20px) scale(0.8); pointer-events: none;
  transition: opacity 0.3s var(--ease), transform 0.3s var(--ease);
}
.to-top.show { opacity: 1; transform: translateY(0) scale(1); pointer-events: auto; }
.to-top:hover { transform: translateY(-3px); }
.to-top svg { width: 22px; height: 22px; }

/* ---------- 14. Scroll reveal ---------- */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity 0.7s var(--ease), transform 0.7s var(--ease); }
.reveal.in { opacity: 1; transform: none; }
.reveal[data-delay="1"] { transition-delay: 0.08s; }
.reveal[data-delay="2"] { transition-delay: 0.16s; }
.reveal[data-delay="3"] { transition-delay: 0.24s; }
.reveal[data-delay="4"] { transition-delay: 0.32s; }

/* Scroll progress bar */
.progress { position: fixed; top: 0; left: 0; height: 3px; width: 0; z-index: 110; background: var(--gradient); transition: width 0.1s linear; }

/* ---------- 15. Blog ---------- */
.post-card { padding: 0; overflow: hidden; display: flex; flex-direction: column; }
.post-card .thumb { aspect-ratio: 16/9; background: var(--gradient); }
.post-card .body { padding: 1.5rem; display: flex; flex-direction: column; flex: 1; }
.post-card .when { font-size: 0.8rem; color: var(--text-faint); }
.post-card h3 { font-size: 1.25rem; margin: 0.5rem 0; }
.post-card p { color: var(--text-soft); font-size: 0.93rem; flex: 1; }
.post-card .read { margin-top: 1rem; font-weight: 600; color: var(--accent); font-size: 0.9rem; }

/* Article (blog post + resume reading) */
.article { max-width: 760px; margin-inline: auto; }
.article h1 { font-size: clamp(2rem, 5vw, 3rem); margin-bottom: 1rem; }
.article .article-meta { color: var(--text-faint); margin-bottom: 2.5rem; font-size: 0.92rem; }
.article-body { font-size: 1.06rem; color: var(--text-soft); }
.article-body h2 { font-size: 1.6rem; margin: 2.5rem 0 1rem; color: var(--text); }
.article-body h3 { font-size: 1.25rem; margin: 2rem 0 0.8rem; color: var(--text); }
.article-body p { margin-bottom: 1.3rem; }
.article-body ul { list-style: disc; padding-left: 1.4rem; margin-bottom: 1.3rem; }
.article-body li { margin-bottom: 0.5rem; }
.article-body a { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }
.article-body blockquote { border-left: 3px solid var(--accent); padding-left: 1.2rem; margin: 1.5rem 0; font-style: italic; color: var(--text); }
.article-body pre { background: var(--bg-elev); border: 1px solid var(--surface-border); border-radius: 12px; padding: 1.2rem; overflow-x: auto; margin-bottom: 1.3rem; }
.article-body code { font-family: ui-monospace, "SF Mono", Menlo, monospace; font-size: 0.9em; background: var(--surface); padding: 0.15em 0.4em; border-radius: 6px; }
.article-body pre code { background: none; padding: 0; }

/* ---------- 16. Print (resume to PDF) ---------- */
@media print {
  body::before, .navbar, .to-top, .progress, .footer, .resume-actions, #contact, .hero-cta { display: none !important; }
  body { background: #fff; color: #000; }
  .glass { box-shadow: none; border: 1px solid #ddd; -webkit-backdrop-filter: none; backdrop-filter: none; background: #fff; }
  section { padding-block: 1rem; }
  .reveal { opacity: 1 !important; transform: none !important; }
}

/* ---------- 16b. Cookie consent banner ---------- */
.cookie-banner {
  position: fixed; left: 1rem; right: 1rem; bottom: 1rem; z-index: 120;
  max-width: 720px; margin-inline: auto;
  display: flex; align-items: center; gap: 1.2rem; flex-wrap: wrap;
  padding: 1rem 1.3rem; border-radius: 16px;
  background: var(--surface); border: 1px solid var(--surface-border);
  -webkit-backdrop-filter: blur(16px) saturate(150%); backdrop-filter: blur(16px) saturate(150%);
  box-shadow: var(--shadow-lg);
  opacity: 0; transform: translateY(20px); transition: opacity 0.35s var(--ease), transform 0.35s var(--ease);
}
.cookie-banner.show { opacity: 1; transform: none; }
.cookie-banner p { flex: 1; min-width: 220px; font-size: 0.9rem; color: var(--text-soft); margin: 0; }
.cookie-actions { display: flex; gap: 0.6rem; }
.cookie-btn { padding: 0.6rem 1.3rem; font-size: 0.9rem; }
@media (max-width: 520px) { .cookie-actions { width: 100%; } .cookie-btn { flex: 1; justify-content: center; } }

/* ---------- 17. Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; scroll-behavior: auto !important; }
  .reveal { opacity: 1; transform: none; }
}