/* ===== THEME ===== */
:root {
  --bg: #0a0f18;
  --text: #eaf0ff;
  --muted: #9cadcf;
  --card: #0f1523;
  --primary: #6ea8fe;
  --accent: #a78bfa;
  --glass: rgba(255, 255, 255, 0.06);
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
  --glow: rgba(110, 168, 254, 0.55);
}
[data-theme="light"] {
  --bg: #f7f9ff;
  --text: #0a1020;
  --muted: #4d5b78;
  --card: #ffffff;
  --primary: #2d6cdf;
  --accent: #7c5cff;
  --glass: rgba(0, 0, 0, 0.06);
  --shadow: 0 10px 24px rgba(0, 0, 0, 0.12);
  --glow: rgba(47, 140, 255, 0.4);
}
html[data-theme] {
  transition: background-color 0.4s ease, color 0.4s ease;
}
* {
  box-sizing: border-box;
}
html,
body {
  height: 100%;
}
body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Arial;
  background: var(--bg);
  color: var(--text);
}

/* ===== LAYOUT ===== */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 20px;
}
.header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: linear-gradient(
    180deg,
    rgba(255, 255, 255, 0.05),
    rgba(255, 255, 255, 0.02)
  );
  border-bottom: 1px solid var(--glass);
  backdrop-filter: blur(8px);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 0;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text);
  font-weight: 700;
}
.nav {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}
.nav a {
  padding: 8px 10px;
  border-radius: 10px;
  text-decoration: none;
  color: var(--text);
}
.nav a:hover {
  background: var(--glass);
}
.btn {
  padding: 10px 14px;
  border-radius: 12px;
  border: 1px solid var(--glass);
  background: var(--card);
  color: var(--text);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  box-shadow: var(--shadow);
  transition: 0.2s transform, 0.2s box-shadow;
}
.btn.primary {
  background: linear-gradient(135deg, var(--accent), var(--primary));
  border: 0;
}
.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 30px var(--glow);
}
.btn.icon {
  padding: 8px;
}
.footer {
  padding: 30px 0;
  text-align: center;
  color: var(--muted);
  border-top: 1px solid var(--glass);
  margin-top: 40px;
}

/* ===== HERO ===== */
.hero {
  padding: 64px 0 24px;
  position: relative;
  overflow: hidden;
}
.hero h1 {
  font-size: clamp(32px, 6vw, 72px);
  line-height: 1;
  margin: 0 0 10px;
}
.hero h1 .accent {
  background: linear-gradient(90deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero p {
  color: var(--muted);
  max-width: 68ch;
}

/* ===== BACKGROUND ===== */
canvas#particles {
  position: fixed;
  inset: 0;
  z-index: -2;
}
.blob {
  position: absolute;
  width: 460px;
  height: 460px;
  border-radius: 50%;
  filter: blur(60px);
  opacity: 0.25;
  z-index: -1;
}
.blob.left {
  left: -120px;
  top: -80px;
  background: radial-gradient(
    circle at 30% 30%,
    var(--accent),
    transparent 60%
  );
  animation: morph 16s ease-in-out infinite;
}
.blob.right {
  right: -140px;
  top: 120px;
  background: radial-gradient(
    circle at 70% 70%,
    var(--primary),
    transparent 60%
  );
  animation: morph 16s ease-in-out -8s infinite;
}
@keyframes morph {
  0%,
  100% {
    transform: translate(0, 0) scale(1);
  }
  25% {
    transform: translate(30px, -20px) scale(1.05);
  }
  50% {
    transform: translate(-20px, 30px) scale(1.08);
  }
  75% {
    transform: translate(-10px, -8px) scale(1.04);
  }
}

/* ===== SECTIONS ===== */
.section {
  padding: 40px 0;
}
.cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}
.card {
  padding: 16px;
  border: 1px solid var(--glass);
  border-radius: 14px;
  background: var(--card);
  box-shadow: var(--shadow);
}
.card-3d {
  transform-style: preserve-3d;
  transition: transform 0.2s ease;
}
.card-3d:hover {
  transform: translateY(-2px) rotateX(2deg) rotateY(-2deg);
}

/* Projects grid */
.projects-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.search {
  padding: 10px 14px;
  background: var(--card);
  color: var(--text);
  border: 1px solid var(--glass);
  border-radius: 12px;
  min-width: 220px;
}
.grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 18px;
}
.project {
  padding: 16px;
  border: 1px solid var(--glass);
  border-radius: 14px;
  background: var(--card);
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.tag {
  font-size: 12px;
  padding: 4px 8px;
  background: var(--glass);
  border-radius: 999px;
}

/* Project page */
.breadcrumb {
  font-size: 14px;
  margin-bottom: 8px;
}
.banner {
  height: 180px;
  border-radius: 16px;
  background: radial-gradient(
      300px 140px at 30% 10%,
      rgba(110, 168, 254, 0.25),
      transparent
    ),
    radial-gradient(
      240px 120px at 70% 90%,
      rgba(155, 140, 254, 0.22),
      transparent
    ),
    linear-gradient(180deg, var(--bg), var(--card));
  box-shadow: var(--shadow);
}

/* Responsive */
@media (max-width: 960px) {
  .cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}
@media (max-width: 620px) {
  .cards {
    grid-template-columns: 1fr;
  }
  .grid {
    grid-template-columns: 1fr;
  }
  .nav {
    display: none;
  }
}