:root {
  --bg: #050914;
  --surface: rgba(13, 23, 44, 0.7);
  --border: rgba(133, 226, 255, 0.22);
  --text: #f3f8ff;
  --muted: #b5c7e9;
  --accent: #48dbff;
  --accent-2: #7a7dff;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Inter", sans-serif;
  color: var(--text);
  background: radial-gradient(circle at 20% 20%, #0f1a35 0%, var(--bg) 55%);
  min-height: 100vh;
  overflow-x: hidden;
}

.ai-grid {
  position: fixed;
  inset: 0;
  background-image: linear-gradient(rgba(82, 182, 255, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(82, 182, 255, 0.08) 1px, transparent 1px);
  background-size: 42px 42px;
  mask-image: radial-gradient(circle at center, black 40%, transparent 100%);
  z-index: -3;
}

#particle-canvas {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: -2;
}

.ambient {
  position: fixed;
  inset: -20vmax;
  background: radial-gradient(circle at 70% 30%, rgba(72, 219, 255, 0.2), transparent 40%),
    radial-gradient(circle at 30% 70%, rgba(122, 125, 255, 0.22), transparent 40%);
  filter: blur(30px);
  z-index: -1;
  animation: floatAmbient 16s ease-in-out infinite alternate;
}

@keyframes floatAmbient {
  from { transform: translate3d(-2%, 0, 0) scale(1); }
  to { transform: translate3d(2%, -1.5%, 0) scale(1.05); }
}

.container { width: min(1120px, 92vw); margin: 0 auto; }

.top-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.2rem 0;
}

.brand {
  font-family: "Space Grotesk", sans-serif;
  font-weight: 700;
  color: var(--text);
  text-decoration: none;
  letter-spacing: 0.02em;
}

.top-nav nav { display: flex; gap: 0.95rem; }
.top-nav nav a {
  color: var(--muted);
  text-decoration: none;
  border: 1px solid transparent;
  border-radius: 10px;
  padding: 0.35rem 0.6rem;
}
.top-nav nav a:hover,
.top-nav nav a.active { color: var(--text); border-color: var(--border); background: rgba(255, 255, 255, 0.05); }

.hero {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 2rem;
  padding: 2rem 0;
}

.pill {
  display: inline-block;
  padding: 0.4rem 0.8rem;
  border-radius: 999px;
  font-size: 0.84rem;
  border: 1px solid var(--border);
  background: rgba(72, 219, 255, 0.12);
}

h1 {
  font-family: "Space Grotesk", sans-serif;
  font-size: clamp(1.9rem, 5vw, 3rem);
  margin: 0.7rem 0;
}

.subtitle { color: var(--accent); font-weight: 700; min-height: 1.5rem; }
.summary, .muted { color: var(--muted); line-height: 1.7; }

.hero__cta { display: flex; flex-wrap: wrap; gap: 0.65rem; margin: 1.2rem 0; }

.btn {
  text-decoration: none;
  color: var(--text);
  padding: 0.68rem 0.96rem;
  border-radius: 12px;
  border: 1px solid var(--border);
  font-weight: 700;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn--solid {
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  color: #071124;
  border: none;
  box-shadow: 0 10px 22px rgba(72, 219, 255, 0.22);
}

.read-more-link {
  color: #48dbff;
  text-decoration: none;
  transition: color 0.1s ease;
}

.read-more-link:hover {
  color: #007bff;
}

.btn--ghost { background: rgba(255, 255, 255, 0.03); }
.btn:hover { transform: translateY(-2px); }

.contact-list { list-style: none; padding: 0; margin: 0; color: var(--muted); display: grid; gap: 0.3rem; }

.profile-card {
  margin: 0;
  padding: 1rem;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: var(--surface);
  animation: floatCard 5s ease-in-out infinite;
}

@keyframes floatCard {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

.profile-card img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border-radius: 12px;
  display: block;
}

.profile-card figcaption { margin-top: 0.7rem; color: var(--muted); font-size: 0.9rem; text-align: center; }

.grid,
.project-grid,
.project-detail {
  display: grid;
  gap: 1rem;
  padding-bottom: 2rem;
}

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

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1.1rem;
  backdrop-filter: blur(4px);
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.card:hover { transform: translateY(-3px); border-color: rgba(72, 219, 255, 0.55); }
.card h2, .card h3 { margin-top: 0; }

.meta { color: var(--accent); font-weight: 600; }
.timeline { display: grid; gap: 1rem; }
.timeline article { border-bottom: 1px dashed rgba(255, 255, 255, 0.15); padding-bottom: 0.7rem; }
.timeline article:last-child { border-bottom: none; padding-bottom: 0; }

.project-link { text-decoration: none; color: var(--text); display: block; }
.project-link span { color: var(--accent); font-weight: 600; }

.train-bar { margin: 0.75rem 0; }
.train-bar label { display: block; margin-bottom: 0.35rem; color: var(--muted); font-weight: 600; }
.train-bar div {
  background: rgba(255, 255, 255, 0.08);
  border-radius: 999px;
  height: 14px;
  overflow: hidden;
}
.train-bar span {
  display: block;
  height: 100%;
  width: 0;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  transition: width 1.4s ease;
}


.read-more {
  margin-top: 0.5rem;
}

.read-more summary {
  cursor: pointer;
  color: var(--accent);
  font-weight: 600;
  list-style: none;
}

.read-more summary::-webkit-details-marker {
  display: none;
}

.read-more summary::after {
  content: "  +";
}

.read-more[open] summary::after {
  content: "  −";
}

.read-more p,
.read-more ul {
  margin-top: 0.55rem;
}

ul { color: var(--muted); }

.footer {
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  color: var(--muted);
  padding: 1rem 0 2rem;
}

.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible { opacity: 1; transform: translateY(0); }

@media (max-width: 860px) {
  .hero,
  .grid { grid-template-columns: 1fr; }
}