/* ============================================================
   Theme tokens
   ============================================================ */
:root {
  --bg: #0b0d12;
  --bg-soft: #11141c;
  --card: rgba(255, 255, 255, 0.04);
  --card-hover: rgba(255, 255, 255, 0.07);
  --border: rgba(255, 255, 255, 0.10);
  --border-strong: rgba(255, 255, 255, 0.18);
  --text: #e8eaf0;
  --text-dim: #9aa1b2;
  --text-faint: #6b7280;
  --accent: #7c5cff;
  --accent-2: #38bdf8;
  --pill-bg: rgba(124, 92, 255, 0.14);
  --pill-text: #c9bcff;
  --glow-1: rgba(124, 92, 255, 0.35);
  --glow-2: rgba(56, 189, 248, 0.22);
  --shadow: 0 20px 50px -20px rgba(0, 0, 0, 0.7);
}

:root[data-theme="light"] {
  --bg: #f6f7fb;
  --bg-soft: #ffffff;
  --card: rgba(255, 255, 255, 0.75);
  --card-hover: #ffffff;
  --border: rgba(15, 23, 42, 0.10);
  --border-strong: rgba(15, 23, 42, 0.18);
  --text: #0f172a;
  --text-dim: #475569;
  --text-faint: #94a3b8;
  --accent: #6d4bff;
  --accent-2: #0ea5e9;
  --pill-bg: rgba(109, 75, 255, 0.10);
  --pill-text: #5b3ce0;
  --glow-1: rgba(124, 92, 255, 0.20);
  --glow-2: rgba(56, 189, 248, 0.18);
  --shadow: 0 20px 40px -24px rgba(15, 23, 42, 0.35);
}

/* ============================================================
   Base
   ============================================================ */
* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI",
    Roboto, Helvetica, Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

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

/* Decorative background layers */
.bg-grid {
  position: fixed;
  inset: 0;
  z-index: -2;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 30%, transparent 75%);
  opacity: 0.5;
}

.bg-glow {
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(600px circle at 20% -5%, var(--glow-1), transparent 55%),
    radial-gradient(600px circle at 85% 5%, var(--glow-2), transparent 55%);
  pointer-events: none;
}

/* ============================================================
   Layout
   ============================================================ */
.page {
  max-width: 960px;
  margin: 0 auto;
  padding: clamp(3rem, 8vw, 6rem) 1.25rem 2rem;
}

/* ============================================================
   Hero
   ============================================================ */
.hero {
  text-align: center;
  margin-bottom: clamp(3rem, 7vw, 5rem);
}

.hero__avatar {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  border: 2px solid var(--border-strong);
  box-shadow: 0 0 0 6px var(--card), var(--shadow);
  object-fit: cover;
  background: var(--bg-soft);
}

.hero__name {
  margin: 1.4rem 0 0.6rem;
  font-size: clamp(2rem, 6vw, 3.25rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  background: linear-gradient(120deg, var(--text), var(--accent) 120%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero__tagline {
  max-width: 34rem;
  margin: 0 auto 1.6rem;
  color: var(--text-dim);
  font-size: clamp(1rem, 2.2vw, 1.15rem);
}

.hero__links {
  display: flex;
  gap: 0.75rem;
  justify-content: center;
  flex-wrap: wrap;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.55rem 1.05rem;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  background: var(--card);
  color: var(--text);
  font-weight: 600;
  font-size: 0.95rem;
  transition: transform 0.15s ease, background 0.15s ease, border-color 0.15s ease;
}

.chip:hover {
  transform: translateY(-2px);
  background: var(--card-hover);
  border-color: var(--accent);
}

/* ============================================================
   Projects
   ============================================================ */
.section-title {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-faint);
  text-align: center;
  margin: 0 0 1.75rem;
}

.projects__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
}

.card {
  display: flex;
  flex-direction: column;
  padding: 1.5rem;
  border: 1px solid var(--border);
  border-radius: 18px;
  background: var(--card);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: var(--shadow);
  transition: transform 0.18s ease, border-color 0.18s ease, background 0.18s ease;
  position: relative;
  overflow: hidden;
}

.card::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(130deg, var(--accent), transparent 40%);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity 0.18s ease;
  pointer-events: none;
}

.card:hover {
  transform: translateY(-4px);
  border-color: var(--border-strong);
  background: var(--card-hover);
}

.card:hover::before { opacity: 1; }

.card__head {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 0.6rem;
}

.card__emoji {
  font-size: 1.5rem;
  line-height: 1;
}

.card__title {
  margin: 0;
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.card__tagline {
  margin: 0 0 1.1rem;
  color: var(--text-dim);
  font-size: 0.95rem;
  flex: 1;
}

.card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-bottom: 1.1rem;
}

.pill {
  padding: 0.25rem 0.65rem;
  border-radius: 999px;
  background: var(--pill-bg);
  color: var(--pill-text);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.01em;
}

.card__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-top: auto;
}

.card__cta {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--accent);
}

.card__source {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-faint);
  padding: 0.2rem 0.55rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  transition: color 0.15s ease, border-color 0.15s ease;
}

.card__source:hover {
  color: var(--text);
  border-color: var(--border-strong);
}

/* ============================================================
   Footer
   ============================================================ */
.footer {
  text-align: center;
  padding: 3rem 1.25rem 2.5rem;
  color: var(--text-faint);
  font-size: 0.85rem;
}

/* ============================================================
   Theme toggle
   ============================================================ */
.theme-toggle {
  position: fixed;
  top: 1rem;
  right: 1rem;
  z-index: 10;
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border: 1px solid var(--border-strong);
  border-radius: 12px;
  background: var(--card);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  cursor: pointer;
  font-size: 1.15rem;
  transition: transform 0.15s ease, background 0.15s ease;
}

.theme-toggle:hover { transform: translateY(-2px); background: var(--card-hover); }

.theme-toggle__icon { grid-area: 1 / 1; line-height: 1; }
:root[data-theme="dark"] .theme-toggle__icon[data-icon="dark"] { display: none; }
:root[data-theme="light"] .theme-toggle__icon[data-icon="light"] { display: none; }

/* ============================================================
   Motion / accessibility
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}