/* ─── Design Tokens ───────────────────────────────── */
:root {
  --bg: #070c1b;
  --surface: rgba(255, 255, 255, 0.07);
  --surface-strong: rgba(255, 255, 255, 0.11);
  --line: rgba(255, 255, 255, 0.11);
  --text: #f0f6ff;
  --muted: #8fa3be;
  --accent: #ffb84d;
  --blue: #38bdf8;
  --purple: #a78bfa;
  --green: #34d399;
  --max-width: 1120px;
  --radius: 24px;
  --shadow: 0 24px 70px rgba(0, 0, 0, 0.38);
  --transition: 220ms ease;
}

/* ─── Reset ─────────────────────────────────────────── */
* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: "Inter", Arial, sans-serif;
  background:
    radial-gradient(circle at 8% 10%, rgba(56, 189, 248, 0.17), transparent 28rem),
    radial-gradient(circle at 92% 6%, rgba(167, 139, 250, 0.15), transparent 26rem),
    radial-gradient(circle at 50% 88%, rgba(255, 184, 77, 0.09), transparent 24rem),
    linear-gradient(180deg, #070c1b 0%, #0b1122 50%, #070c1b 100%);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
}

/* Subtle grid overlay */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.027) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.027) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: linear-gradient(to bottom, black, transparent 68%);
  z-index: 0;
}

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

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

.container {
  width: min(var(--max-width), calc(100% - 2rem));
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

/* ─── Header / Nav ──────────────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  backdrop-filter: blur(18px);
  background: rgba(7, 12, 27, 0.78);
  border-bottom: 1px solid var(--line);
}

.nav {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  font-weight: 800;
  letter-spacing: -0.04em;
  font-size: 1.1rem;
  background: linear-gradient(90deg, var(--text) 40%, var(--muted));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.site-nav {
  display: flex;
  gap: 0.2rem;
  align-items: center;
}

.site-nav a {
  color: var(--muted);
  font-weight: 500;
  padding: 0.65rem 0.9rem;
  border-radius: 999px;
  position: relative;
  transition: color var(--transition), background var(--transition);
}

.site-nav a::after {
  content: "";
  position: absolute;
  left: 0.9rem;
  right: 0.9rem;
  bottom: 0.38rem;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--accent), #fb923c);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 240ms ease;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: var(--text);
  background: rgba(255, 255, 255, 0.06);
}

.site-nav a:hover::after,
.site-nav a:focus-visible::after { transform: scaleX(1); }

.nav-toggle {
  display: none;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.07);
  color: var(--text);
  padding: 0.7rem 1rem;
  cursor: pointer;
  font: inherit;
  font-size: 0.9rem;
}

.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  margin: 5px auto;
  background: currentColor;
  transition: transform var(--transition), opacity var(--transition);
}

/* ─── Hero ──────────────────────────────────────────── */
.hero { padding: 5.5rem 0 4.5rem; }

.hero-grid {
  display: grid;
  grid-template-columns: 1.5fr 0.9fr;
  gap: 1.25rem;
  align-items: stretch;
}

.hero-copy,
.hero-card,
.experience-panel {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.hero-copy {
  background:
    radial-gradient(circle at top right, rgba(255, 184, 77, 0.13), transparent 22rem),
    radial-gradient(circle at bottom left, rgba(56, 189, 248, 0.07), transparent 18rem),
    rgba(255, 255, 255, 0.07);
  backdrop-filter: blur(18px);
  padding: 2.5rem;
}

.hero-card,
.experience-panel {
  background: rgba(255, 255, 255, 0.065);
  backdrop-filter: blur(14px);
  padding: 2rem;
}

/* ─── Labels ─────────────────────────────────────────── */
.eyebrow,
.section-label,
.card-label {
  display: inline-block;
  text-transform: uppercase;
  letter-spacing: 0.13em;
  font-size: 0.78rem;
  font-weight: 800;
  background: linear-gradient(90deg, var(--accent), #fb923c);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ─── Typography ─────────────────────────────────────── */
.hero h1,
.section-intro h2 {
  margin: 0.6rem 0 1rem;
  line-height: 1.02;
  letter-spacing: -0.055em;
}

.hero h1 {
  font-size: clamp(2.7rem, 6vw, 4.8rem);
  max-width: 12ch;
  color: var(--text);
}

.section-intro h2 { font-size: clamp(2rem, 4.5vw, 3.8rem); }

.hero-text,
.section-intro p:not(.section-label),
.contact-panel p { color: var(--muted); max-width: 65ch; }

/* ─── Buttons ─────────────────────────────────────────── */
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin: 1.75rem 0;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 160px;
  padding: 0.95rem 1.4rem;
  border-radius: 999px;
  font-weight: 800;
  border: 1px solid transparent;
  position: relative;
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.button::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, transparent, rgba(255, 255, 255, 0.28), transparent);
  transform: translateX(-120%);
  transition: transform 600ms ease;
}

.button:hover::before,
.button:focus-visible::before { transform: translateX(120%); }

.button:hover,
.button:focus-visible { transform: translateY(-3px); }

.button.primary {
  background: linear-gradient(135deg, var(--accent), #fb923c);
  color: #1a0e00;
}

.button.primary:hover { box-shadow: 0 14px 32px rgba(255, 184, 77, 0.3); }

.button.secondary {
  color: var(--text);
  background: rgba(255, 255, 255, 0.07);
  border-color: var(--line);
}

.button.secondary:hover {
  border-color: rgba(56, 189, 248, 0.45);
  box-shadow: 0 14px 32px rgba(56, 189, 248, 0.12);
}

/* ─── Lists ──────────────────────────────────────────── */
.hero-highlights,
.hero-card ul,
.experience-panel ul { padding-left: 1.1rem; margin: 1rem 0 0; }

.hero-highlights li,
.hero-card li,
.experience-panel li { margin: 0.7rem 0; color: var(--muted); }

/* ─── Sections ──────────────────────────────────────── */
.section { padding: 4.5rem 0; }

.section-alt {
  background: rgba(255, 255, 255, 0.022);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.section-intro { margin-bottom: 2.25rem; }
.section-intro.narrow { max-width: 760px; }
.section-intro.left { margin-bottom: 1.5rem; }
.sub-intro { margin-top: 3rem; }

/* ─── Project Cards (glass) ──────────────────────────── */
.card-grid,
.link-grid,
.logo-grid { display: grid; gap: 1.25rem; }

.card-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }

.project-card {
  background: rgba(255, 255, 255, 0.065);
  backdrop-filter: blur(14px);
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 1.5rem;
  color: var(--text);
  box-shadow: var(--shadow);
  opacity: 0;
  transform: translateY(20px);
}

.project-card.visible {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.6s ease, transform 0.6s ease,
              border-color var(--transition), background var(--transition);
}

.project-card:hover {
  transform: translateY(-6px);
  background: rgba(255, 255, 255, 0.09);
  border-color: rgba(255, 184, 77, 0.35);
}

.project-card.visible:hover { transform: translateY(-6px); }

.project-card.featured {
  border-color: rgba(255, 184, 77, 0.38);
  background:
    radial-gradient(circle at top right, rgba(255, 184, 77, 0.11), transparent 16rem),
    rgba(255, 255, 255, 0.075);
}

.project-card.featured:hover { border-color: rgba(255, 184, 77, 0.6); }

.card-top { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-bottom: 1rem; }

.tag {
  display: inline-flex;
  align-items: center;
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  background: rgba(255, 184, 77, 0.14);
  color: #ffcf7a;
  font-size: 0.78rem;
  font-weight: 700;
  border: 1px solid rgba(255, 184, 77, 0.24);
}

.tag.muted {
  background: rgba(255, 255, 255, 0.08);
  color: var(--muted);
  border-color: var(--line);
}

.project-card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.2rem;
  letter-spacing: -0.03em;
  color: var(--text);
}

.project-card p { color: var(--muted); margin: 0; }

.card-links { display: flex; gap: 1rem; flex-wrap: wrap; margin-top: 1.25rem; }

.card-links a {
  color: var(--blue);
  font-weight: 600;
  font-size: 0.9rem;
  transition: color var(--transition);
}

.card-links a:hover { color: var(--text); }

/* ─── Link Cards (glass) ─────────────────────────────── */
.link-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }

.link-card {
  background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(12px);
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 1.5rem;
  color: var(--text);
  min-height: 170px;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
  opacity: 0;
  transform: translateY(18px);
}

.link-card.visible {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.55s ease, transform 0.55s ease,
              border-color var(--transition), background var(--transition);
}

.link-card:hover,
.link-card:focus-visible {
  transform: translateY(-5px);
  border-color: rgba(56, 189, 248, 0.38);
  background: rgba(255, 255, 255, 0.09);
}

.link-card.visible:hover,
.link-card.visible:focus-visible { transform: translateY(-5px); }

.link-card h3 { margin: 0 0 0.45rem; font-size: 1.05rem; letter-spacing: -0.03em; transition: color var(--transition); }

.link-card:hover h3,
.link-card:focus-visible h3 { color: var(--blue); }

.link-card p { color: var(--muted); font-size: 0.93rem; margin: 0; }

/* ─── Logo Cards ─────────────────────────────────────── */
.logo-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }

.logo-card {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  align-items: center;
  text-align: center;
  background: rgba(255, 255, 255, 0.95);
  color: #1a2030;
  border-radius: 22px;
  padding: 1.5rem;
  border: 1px solid rgba(255, 255, 255, 0.15);
  box-shadow: 0 14px 40px rgba(0, 0, 0, 0.25);
  opacity: 0;
  transform: translateY(18px);
}

.logo-card.visible {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.55s ease, transform 0.55s ease, box-shadow var(--transition);
}

.logo-card:hover { transform: translateY(-5px); box-shadow: 0 22px 55px rgba(0, 0, 0, 0.32); }
.logo-card.visible:hover { transform: translateY(-5px); }

.logo-card img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: contain;
  border-radius: 18px;
  background: #f5f7fb;
  padding: 1rem;
}

.logo-card figcaption { font-weight: 700; font-size: 1rem; color: #2a3548; }

/* ─── Skills ─────────────────────────────────────────── */
.skills-layout { display: grid; grid-template-columns: 1.4fr 0.8fr; gap: 1.5rem; }

.skill-groups { display: grid; gap: 1rem; }

.skill-group {
  background: rgba(255, 255, 255, 0.055);
  backdrop-filter: blur(12px);
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 1.25rem;
  opacity: 0;
  transform: translateY(16px);
}

.skill-group.visible {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.55s ease, transform 0.55s ease, border-color var(--transition);
}

.skill-group:hover { border-color: rgba(56, 189, 248, 0.32); }

.skill-group h3 {
  margin: 0 0 0.85rem;
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.pill-list { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 0.6rem; }

.pill-list li {
  padding: 0.5rem 0.9rem;
  border-radius: 999px;
  background: rgba(56, 189, 248, 0.09);
  border: 1px solid rgba(56, 189, 248, 0.2);
  color: #a8d8f0;
  font-size: 0.88rem;
  font-weight: 500;
  transition: background var(--transition), border-color var(--transition), color var(--transition);
}

.pill-list li:hover {
  background: rgba(56, 189, 248, 0.18);
  border-color: rgba(56, 189, 248, 0.45);
  color: var(--text);
}

/* ─── Contact ────────────────────────────────────────── */
.contact-panel {
  background: rgba(255, 255, 255, 0.065);
  backdrop-filter: blur(16px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  box-shadow: var(--shadow);
  opacity: 0;
  transform: translateY(18px);
}

.contact-panel.visible {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.contact-panel a { color: var(--blue); transition: color var(--transition); }
.contact-panel a:hover { color: var(--text); }

/* ─── Hero aside / experience panel ─────────────────── */
.hero-card,
.experience-panel { opacity: 0; transform: translateY(18px); }

.hero-card.visible,
.experience-panel.visible {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

/* ─── Footer ─────────────────────────────────────────── */
.site-footer { padding: 1.5rem 0 2rem; border-top: 1px solid var(--line); }

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  color: var(--muted);
  font-size: 0.9rem;
}

/* ─── Scroll Reveal (legacy .reveal class) ───────────── */
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.6s ease, transform 0.6s ease;
  transition-delay: var(--delay, 0ms);
}

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

/* ─── Responsive ─────────────────────────────────────── */
@media (max-width: 900px) {
  .hero-grid,
  .skills-layout,
  .contact-panel,
  .card-grid,
  .link-grid,
  .logo-grid { grid-template-columns: 1fr; }

  .contact-panel { align-items: flex-start; flex-direction: column; }

  .site-nav {
    position: absolute;
    top: 72px;
    right: 1rem;
    left: 1rem;
    display: none;
    flex-direction: column;
    align-items: flex-start;
    padding: 1rem;
    background: rgba(7, 12, 27, 0.97);
    border: 1px solid var(--line);
    border-radius: 18px;
    backdrop-filter: blur(18px);
  }

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

  .nav-toggle { display: block; }

  .section { padding: 3.5rem 0; }
}

@media (max-width: 640px) {
  .hero { padding-top: 4rem; }

  .hero-copy,
  .hero-card,
  .experience-panel,
  .contact-panel,
  .project-card,
  .link-card,
  .logo-card { padding: 1.25rem; }

  .footer-inner { flex-direction: column; align-items: flex-start; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}