/* ===================== TOKENS ===================== */
:root {
  --bg: #080810;
  --bg2: #0d0d1a;
  --surface: rgba(255,255,255,0.04);
  --border: rgba(0,229,255,0.12);
  --accent: #00e5ff;
  --accent-dim: rgba(0,229,255,0.45);
  --text: #e8eaf0;
  --text-muted: #6b7280;
  --text-dim: #9ca3af;
  --font: 'Outfit', sans-serif;
  --mono: 'JetBrains Mono', monospace;
  --radius: 16px;
  --radius-lg: 24px;
  --nav-h: 70px;
}

/* ===================== RESET ===================== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  overflow-x: hidden;
  line-height: 1.6;
}
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img, svg { display: block; }

/* ===================== LOADER ===================== */
#loader {
  position: fixed; inset: 0; z-index: 9999;
  background: var(--bg);
  display: flex; align-items: center; justify-content: center;
  transition: opacity 0.6s ease, visibility 0.6s ease;
}
#loader.hidden { opacity: 0; visibility: hidden; }
.loader-content { text-align: center; }
.loader-logo {
  font-size: 3rem; font-weight: 900;
  color: var(--accent);
  letter-spacing: -2px;
  margin-bottom: 24px;
  font-family: var(--font);
}
.loader-track {
  width: 200px; height: 2px;
  background: rgba(255,255,255,0.08);
  border-radius: 2px; overflow: hidden;
  margin: 0 auto 16px;
}
.loader-fill {
  height: 100%;
  background: var(--accent);
  width: 0%;
  transition: width 0.1s linear;
  box-shadow: 0 0 12px var(--accent);
}
.loader-text { color: var(--text-muted); font-size: 0.75rem; }

/* ===================== CANVAS ===================== */
#bg-canvas {
  position: fixed; inset: 0;
  width: 100%; height: 100%;
  z-index: 0; pointer-events: none;
}

/* ===================== NAV ===================== */
#navbar {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: 100; height: var(--nav-h);
  transition: background 0.3s, backdrop-filter 0.3s, border-color 0.3s;
  border-bottom: 1px solid transparent;
}
#navbar.scrolled {
  background: rgba(8,8,16,0.85);
  backdrop-filter: blur(20px);
  border-color: var(--border);
}
.nav-inner {
  max-width: 1200px; margin: 0 auto;
  height: 100%;
  display: flex; align-items: center;
  padding: 0 32px; gap: 40px;
}
.nav-logo {
  font-size: 1.4rem; font-weight: 900;
  color: var(--accent);
  letter-spacing: -1px;
  flex-shrink: 0;
}
.nav-links {
  display: flex; gap: 32px; margin-left: auto;
}
.nav-item {
  font-size: 0.9rem; font-weight: 500;
  color: var(--text-muted);
  transition: color 0.2s;
  position: relative;
}
.nav-item::after {
  content: ''; position: absolute;
  bottom: -4px; left: 0;
  width: 0; height: 1px;
  background: var(--accent);
  transition: width 0.25s ease;
}
.nav-item:hover { color: var(--text); }
.nav-item:hover::after { width: 100%; }
.nav-cta {
  font-size: 0.85rem; font-weight: 600;
  color: #050810;
  background: linear-gradient(135deg, #00e5ff 0%, #00c6ff 50%, #00ffcc 100%);
  padding: 8px 20px;
  border-radius: 8px;
  transition: opacity 0.2s, transform 0.2s, box-shadow 0.2s;
  flex-shrink: 0;
}
.nav-cta:hover { opacity: 0.9; transform: translateY(-1px); box-shadow: 0 6px 24px rgba(0,198,255,0.4); }
.hamburger {
  display: none; flex-direction: column;
  gap: 5px; background: none; border: none;
  cursor: pointer; padding: 4px; margin-left: auto;
}
.hamburger span {
  display: block; width: 22px; height: 2px;
  background: var(--text);
  transition: transform 0.3s, opacity 0.3s;
}

/* ===================== SECTIONS ===================== */
.section { position: relative; z-index: 1; padding: 120px 0; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 32px; }
.section-label {
  font-size: 0.8rem; color: var(--accent); font-family: var(--mono);
  margin-bottom: 12px; letter-spacing: 0.05em;
}
.section-title {
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 800; line-height: 1.1;
  letter-spacing: -1.5px;
  margin-bottom: 48px;
}
.mono { font-family: var(--mono); }
.accent { color: var(--accent); }
.accent-dim { color: var(--accent-dim); }

/* ===================== HERO ===================== */
#hero {
  position: relative; z-index: 1;
  min-height: 100dvh;
  display: flex; align-items: center;
  padding-top: var(--nav-h);
}
.hero-wrap {
  max-width: 1200px; margin: 0 auto;
  padding: 0 32px;
  display: grid;
  grid-template-columns: 1fr 420px;
  gap: 60px;
  align-items: center;
  width: 100%;
}
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 0.8rem; font-family: var(--mono);
  color: var(--accent);
  border: 1px solid var(--border);
  padding: 6px 14px; border-radius: 100px;
  margin-bottom: 28px;
  background: rgba(0,229,255,0.05);
}
.badge-pulse {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 0 rgba(0,229,255,0.4);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(0,229,255,0.4); }
  70% { box-shadow: 0 0 0 8px rgba(0,229,255,0); }
  100% { box-shadow: 0 0 0 0 rgba(0,229,255,0); }
}
.hero-name {
  font-size: clamp(3.5rem, 7vw, 6rem);
  font-weight: 900; line-height: 1;
  letter-spacing: -3px;
  margin-bottom: 20px;
  display: flex; flex-direction: column;
}
.hn-line { display: block; }
.hn-line.accent { color: var(--accent); }
.hero-role {
  font-size: 1.1rem; color: var(--text-muted);
  font-weight: 500; margin-bottom: 20px;
}
.role-sep { color: var(--accent); margin: 0 8px; }
.hero-desc {
  font-size: 1rem; color: var(--text-dim);
  max-width: 520px; margin-bottom: 36px;
  line-height: 1.7;
}
.hero-actions {
  display: flex; flex-wrap: wrap; gap: 12px;
  margin-bottom: 32px;
}
.hero-meta {
  display: flex; flex-direction: column; gap: 6px;
  font-size: 0.78rem; color: var(--text-muted);
}

/* Buttons */
.btn-primary {
  display: inline-flex; align-items: center; gap: 8px;
  background: linear-gradient(135deg, #00e5ff 0%, #00c6ff 50%, #00ffcc 100%);
  color: #050810;
  font-weight: 700; font-size: 0.9rem;
  padding: 12px 24px; border-radius: 10px;
  transition: transform 0.2s, box-shadow 0.2s;
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(0,198,255,0.45);
}
.btn-primary.large { padding: 16px 32px; font-size: 1rem; }
.btn-ghost {
  display: inline-flex; align-items: center; gap: 8px;
  border: 1px solid var(--border);
  color: var(--text-dim);
  font-weight: 500; font-size: 0.9rem;
  padding: 12px 20px; border-radius: 10px;
  transition: border-color 0.2s, color 0.2s, background 0.2s;
  background: var(--surface);
}
.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(0,229,255,0.06);
}

/* Floating Cards */
.hero-right {
  display: flex; flex-direction: column; gap: 16px;
}
.floating-card {
  background: rgba(13,13,26,0.8);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  backdrop-filter: blur(20px);
  padding: 20px;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
  transform-style: preserve-3d;
}
.fc-header {
  display: flex; align-items: center; gap: 10px;
  margin-bottom: 16px;
}
.fc-dots { display: flex; gap: 5px; }
.fc-dots span {
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--border);
}
.fc-dots span:nth-child(1) { background: #ff5f57; }
.fc-dots span:nth-child(2) { background: #febc2e; }
.fc-dots span:nth-child(3) { background: #28c840; }
.fc-title { font-size: 0.72rem; color: var(--text-muted); }
.fc-body { font-size: 0.78rem; display: flex; flex-direction: column; gap: 4px; }
.json-line { display: flex; align-items: center; gap: 4px; }
.json-line.indent { padding-left: 16px; }
.jk { color: #7dd3fc; }
.jc { color: var(--text-muted); }
.js { color: #86efac; }
.jb { color: #fbbf24; }
.jbool { color: #f472b6; }
.live-dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: #28c840;
  box-shadow: 0 0 6px #28c840;
  animation: pulse 2s infinite;
  margin-left: 6px;
}
.floating-card.mini { padding: 16px; }
.mini-label { font-size: 0.72rem; color: var(--accent); margin-bottom: 12px; }
.mini-feed { display: flex; flex-direction: column; gap: 8px; }
.feed-item { display: flex; align-items: center; gap: 8px; }
.feed-dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
}
.feed-text { font-size: 0.75rem; color: var(--text-dim); }

/* Scroll hint */
.scroll-hint {
  position: absolute; bottom: 40px; left: 50%;
  transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 10px;
  color: var(--text-muted); font-size: 0.7rem;
}
.scroll-line {
  width: 1px; height: 50px;
  background: linear-gradient(to bottom, var(--accent-dim), transparent);
  animation: scrollLine 2s ease infinite;
}
@keyframes scrollLine {
  0%, 100% { opacity: 0.3; }
  50% { opacity: 1; }
}

/* ===================== ABOUT ===================== */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px; align-items: start;
}
.about-desc {
  color: var(--text-dim); line-height: 1.75;
  margin-bottom: 16px; max-width: 520px;
}
.about-langs { display: flex; gap: 8px; margin-top: 24px; }
.lang-pill {
  font-size: 0.78rem; padding: 4px 12px;
  border: 1px solid var(--border);
  border-radius: 100px; color: var(--text-muted);
}
.about-cards { display: flex; flex-direction: column; gap: 16px; }
.info-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  display: flex; align-items: flex-start; gap: 16px;
  transition: border-color 0.2s, transform 0.15s ease, box-shadow 0.15s ease;
  transform-style: preserve-3d;
}
.info-card:hover { border-color: var(--accent-dim); }
.ic-icon {
  width: 44px; height: 44px;
  border-radius: 10px;
  background: rgba(0,229,255,0.08);
  border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  color: var(--accent);
}
.ic-content { display: flex; flex-direction: column; gap: 2px; }
.ic-label { font-size: 0.72rem; color: var(--text-muted); font-family: var(--mono); }
.ic-content strong { font-size: 0.95rem; font-weight: 600; }
.ic-sub { font-size: 0.8rem; color: var(--text-muted); }

/* ===================== PROJECTS ===================== */
.bento-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 20px;
}
.bento-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  position: relative; overflow: hidden;
  transition: border-color 0.2s, transform 0.15s ease, box-shadow 0.15s ease;
  transform-style: preserve-3d;
}
.bento-card:hover { border-color: rgba(0,229,255,0.3); }
.bc-accent-line {
  position: absolute; top: 0; left: 24px; right: 24px;
  height: 1px;
  background: linear-gradient(to right, transparent, var(--accent), transparent);
  opacity: 0.5;
}
.bc-top {
  display: flex; align-items: flex-start; gap: 14px;
  margin-bottom: 16px;
}
.bc-icon {
  width: 48px; height: 48px;
  border-radius: 12px;
  background: rgba(0,229,255,0.08);
  border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  color: var(--accent); flex-shrink: 0;
}
.bc-title { font-size: 1.2rem; font-weight: 700; margin-bottom: 2px; }
.bc-subtitle { font-size: 0.72rem; color: var(--text-muted); }
.bc-link {
  margin-left: auto; flex-shrink: 0;
  width: 36px; height: 36px;
  border-radius: 8px;
  border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  color: var(--text-muted);
  transition: border-color 0.2s, color 0.2s, background 0.2s;
}
.bc-link:hover { border-color: var(--accent); color: var(--accent); background: rgba(0,229,255,0.06); }
.bc-link-block {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 0.78rem; color: var(--accent);
  margin-bottom: 14px;
}
.bc-desc { font-size: 0.88rem; color: var(--text-dim); line-height: 1.65; margin-bottom: 16px; }
.bc-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 20px; }
.tag {
  font-size: 0.72rem; padding: 3px 10px;
  border: 1px solid var(--border);
  border-radius: 6px; color: var(--text-muted);
  font-family: var(--mono);
}
.sensor-readout {
  background: rgba(0,0,0,0.3);
  border: 1px solid var(--border);
  border-radius: 10px; padding: 14px;
  display: flex; flex-wrap: wrap; gap: 16px;
  align-items: center;
}
.sr-item { display: flex; flex-direction: column; gap: 2px; }
.sr-label { font-size: 0.65rem; color: var(--text-muted); }
.sr-value { font-size: 1rem; font-weight: 600; }
.sr-bar-wrap {
  flex: 1; min-width: 80px; height: 4px;
  background: rgba(255,255,255,0.06);
  border-radius: 2px; overflow: hidden;
}
.sr-bar {
  height: 100%; width: 67%;
  background: linear-gradient(to right, var(--accent), #00ffaa);
  border-radius: 2px;
  box-shadow: 0 0 8px var(--accent);
  animation: barPulse 3s ease infinite;
}
@keyframes barPulse {
  0%,100% { width: 67%; }
  50% { width: 74%; }
}
.rgb-icon { animation: rgbCycle 4s linear infinite; }
@keyframes rgbCycle {
  0% { border-color: #ff2d55; color: #ff2d55; }
  25% { border-color: #00e5ff; color: #00e5ff; }
  50% { border-color: #7fff00; color: #7fff00; }
  75% { border-color: #ff9500; color: #ff9500; }
  100% { border-color: #ff2d55; color: #ff2d55; }
}
.rgb-swatch-row {
  display: flex; gap: 8px; margin-top: 16px;
}
.rgb-swatch {
  width: 32px; height: 32px; border-radius: 8px;
  background: var(--c);
  box-shadow: 0 0 12px var(--c);
  transition: transform 0.2s;
}
.rgb-swatch:hover { transform: scale(1.2); }

/* ===================== SKILLS ===================== */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.skill-group {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  transition: border-color 0.2s, transform 0.15s ease, box-shadow 0.15s ease;
  transform-style: preserve-3d;
}
.skill-group:hover { border-color: var(--accent-dim); }
.sg-label {
  font-size: 0.72rem; color: var(--accent);
  margin-bottom: 14px; letter-spacing: 0.05em;
}
.sg-chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip {
  font-size: 0.75rem; padding: 4px 10px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 6px; color: var(--text-dim);
}
.chip.accent-chip {
  border-color: rgba(0,229,255,0.2);
  color: var(--accent-dim);
  background: rgba(0,229,255,0.04);
}

/* ===================== TIMELINE ===================== */
.timeline { display: flex; flex-direction: column; gap: 0; position: relative; }
.timeline::before {
  content: ''; position: absolute;
  left: 11px; top: 12px; bottom: 12px;
  width: 1px; background: var(--border);
}
.tl-item {
  display: flex; gap: 24px; align-items: flex-start;
  padding-bottom: 32px;
}
.tl-item:last-child { padding-bottom: 0; }
.tl-dot {
  width: 24px; height: 24px; border-radius: 50%;
  border: 2px solid var(--accent);
  background: var(--bg);
  box-shadow: 0 0 12px rgba(0,229,255,0.3);
  flex-shrink: 0; margin-top: 4px; position: relative; z-index: 1;
}
.tl-content {
  flex: 1; background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  transition: border-color 0.2s, transform 0.15s ease, box-shadow 0.15s ease;
  transform-style: preserve-3d;
}
.tl-content:hover { border-color: var(--accent-dim); }
.tl-date { font-size: 0.72rem; color: var(--accent); display: block; margin-bottom: 6px; }
.tl-content h3 { font-size: 1rem; font-weight: 600; margin-bottom: 6px; }
.tl-content p { font-size: 0.88rem; color: var(--text-dim); line-height: 1.6; }

/* ===================== CONTACT ===================== */
.contact-wrap {
  max-width: 600px;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 60px 48px;
  background: var(--surface);
  backdrop-filter: blur(20px);
}
.contact-desc {
  color: var(--text-dim); margin-bottom: 32px;
  line-height: 1.65;
}
.contact-links {
  display: flex; gap: 24px; margin-top: 24px;
}
.contact-link {
  font-size: 0.82rem; color: var(--text-muted);
  font-family: var(--mono);
  transition: color 0.2s;
}
.contact-link:hover { color: var(--accent); }

/* ===================== FOOTER ===================== */
footer {
  position: relative; z-index: 1;
  border-top: 1px solid var(--border);
  padding: 24px 0;
}
footer .container {
  display: flex; justify-content: space-between; align-items: center;
}
.footer-text { font-size: 0.78rem; color: var(--text-muted); }

/* ===================== TILT CARD ===================== */
.tilt-card { transition: transform 0.15s ease, box-shadow 0.15s ease; }

/* ===================== REVEAL ===================== */
.reveal-up, .reveal-section {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
  transition-delay: var(--delay, 0s);
}
.reveal-up.visible, .reveal-section.visible {
  opacity: 1; transform: translateY(0);
}

/* ===================== RESPONSIVE ===================== */
@media (max-width: 900px) {
  .hero-wrap { grid-template-columns: 1fr; }
  .hero-right { display: none; }
  .about-grid { grid-template-columns: 1fr; gap: 40px; }
  .bento-grid { grid-template-columns: 1fr; }
  .skills-grid { grid-template-columns: 1fr 1fr; }
  .nav-links { display: none; }
  .nav-cta { display: none; }
  .hamburger { display: flex; }
}
@media (max-width: 600px) {
  .skills-grid { grid-template-columns: 1fr; }
  .hero-name { font-size: 3rem; }
  .contact-wrap { padding: 36px 24px; }
  .contact-links { flex-direction: column; gap: 12px; }
  .container { padding: 0 20px; }
  .hero-wrap { padding: 0 20px; }
}

/* ===================== MOBILE NAV ===================== */
.nav-links.open {
  display: flex; flex-direction: column;
  position: fixed; inset: 0; top: var(--nav-h);
  background: rgba(8,8,16,0.98);
  backdrop-filter: blur(20px);
  align-items: center; justify-content: center;
  gap: 32px; z-index: 99;
}
.nav-links.open .nav-item { font-size: 1.4rem; }

/* ===================== PREFERS REDUCED MOTION ===================== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
}