/* ===== RESET & BASE ===== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --bg: #0c0c0e;
  --bg-card: rgba(255,255,255,0.03);
  --bg-card-hover: rgba(255,255,255,0.06);
  --border: rgba(255,255,255,0.08);
  --border-hover: rgba(255,255,255,0.16);
  --text: #e4e4e7;
  --text-muted: #71717a;
  --text-heading: #fafafa;
  --accent: #a78bfa;
  --accent-dim: rgba(167,139,250,0.12);
  --accent-hover: #c4b5fd;
  --header-bg: rgba(12,12,14,0.8);
  --input-bg: rgba(255,255,255,0.04);
  --shadow: 0 1px 3px rgba(0,0,0,0.3);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.3);
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="light"] {
  --bg: #fafaf9;
  --bg-card: rgba(0,0,0,0.02);
  --bg-card-hover: rgba(0,0,0,0.05);
  --border: rgba(0,0,0,0.08);
  --border-hover: rgba(0,0,0,0.16);
  --text: #3f3f46;
  --text-muted: #a1a1aa;
  --text-heading: #18181b;
  --accent: #7c3aed;
  --accent-dim: rgba(124,58,237,0.08);
  --accent-hover: #6d28d9;
  --header-bg: rgba(250,250,249,0.85);
  --input-bg: rgba(0,0,0,0.03);
  --shadow: 0 1px 3px rgba(0,0,0,0.06);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.08);
}

html { scroll-behavior: smooth; scroll-padding-top: 80px; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  transition: background var(--transition), color var(--transition);
  overflow-x: hidden;
}

.mono { font-family: 'JetBrains Mono', 'Fira Code', monospace; }
.accent { color: var(--accent); }
strong { color: var(--text-heading); font-weight: 600; }

::selection { background: var(--accent-dim); color: var(--accent); }

::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--accent); }

/* ===== LAYOUT ===== */
.container { max-width: 1100px; margin: 0 auto; padding: 0 24px; }
.container-sm { max-width: 720px; }
.section { padding: 100px 0; }

/* ===== HEADER ===== */
header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: var(--header-bg);
  backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  transition: background var(--transition), border-color var(--transition);
}

nav {
  max-width: 1100px; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 24px;
}

.logo {
  font-family: 'JetBrains Mono', monospace;
  font-weight: 600; font-size: 1.1rem;
  color: var(--text-heading);
  text-decoration: none;
  transition: color var(--transition);
}
.logo-bracket { color: var(--accent); }

.nav-links {
  display: flex; align-items: center; gap: 32px;
}

.nav-link {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.85rem; font-weight: 500;
  color: var(--text-muted);
  text-decoration: none;
  position: relative;
  transition: color var(--transition);
}
.nav-link::after {
  content: ''; position: absolute; bottom: -4px; left: 0;
  width: 0; height: 1.5px; background: var(--accent);
  transition: width var(--transition);
}
.nav-link:hover { color: var(--text-heading); }
.nav-link:hover::after { width: 100%; }

/* Theme toggle */
.theme-toggle {
  width: 36px; height: 36px; border-radius: 8px;
  border: 1px solid var(--border);
  background: transparent; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  color: var(--text-muted);
  transition: all var(--transition);
  position: relative;
}
.theme-toggle:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-dim); }

.theme-toggle .icon-sun, .theme-toggle .icon-moon {
  position: absolute;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}
[data-theme="dark"] .icon-sun { opacity: 0; transform: rotate(-90deg) scale(0); }
[data-theme="dark"] .icon-moon { opacity: 1; transform: rotate(0) scale(1); }
[data-theme="light"] .icon-sun { opacity: 1; transform: rotate(0) scale(1); }
[data-theme="light"] .icon-moon { opacity: 0; transform: rotate(90deg) scale(0); }

/* Mobile */
.mobile-menu-btn {
  display: none; background: none; border: none;
  color: var(--text-heading); cursor: pointer;
  padding: 4px;
}
.mobile-menu {
  display: none; flex-direction: column; gap: 0;
  padding: 0 24px 16px;
  background: var(--header-bg);
  backdrop-filter: blur(20px);
}
.mobile-menu a {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.9rem; padding: 12px 0;
  color: var(--text-muted); text-decoration: none;
  border-bottom: 1px solid var(--border);
  transition: color var(--transition);
}
.mobile-menu a:hover { color: var(--accent); }
.mobile-menu.open { display: flex; }
.mobile-menu .theme-toggle { margin-top: 8px; align-self: flex-start; }

@media (max-width: 768px) {
  .nav-links { display: none; }
  .mobile-menu-btn { display: block; }
}

/* ===== HERO ===== */
.hero {
  min-height: 100vh; display: flex; align-items: center;
  padding: 120px 24px 80px;
}

.hero-content {
  max-width: 1100px; margin: 0 auto; width: 100%;
  display: grid; grid-template-columns: 1fr 1fr; gap: 64px;
  align-items: center;
}

.hero-greeting {
  font-size: 0.9rem; color: var(--text-muted);
  margin-bottom: 16px; letter-spacing: 0.02em;
}

.hero-name {
  font-size: clamp(2.4rem, 5vw, 3.6rem);
  font-weight: 700; line-height: 1.15;
  color: var(--text-heading);
  margin-bottom: 16px;
  transition: color var(--transition);
}

.hero-role {
  font-size: 1rem; color: var(--text-muted);
  margin-bottom: 20px;
}

.cursor {
  animation: blink 1s step-end infinite;
  color: var(--accent);
}
@keyframes blink { 0%, 100% { opacity: 1; } 50% { opacity: 0; } }

.hero-desc {
  font-size: 1.05rem; color: var(--text-muted);
  max-width: 440px; margin-bottom: 32px;
  line-height: 1.8;
}

.hero-actions { display: flex; gap: 12px; margin-bottom: 40px; flex-wrap: wrap; }

.btn-primary {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 28px; border-radius: 8px;
  background: var(--accent); color: #fff;
  font-weight: 600; font-size: 0.9rem;
  text-decoration: none; border: none; cursor: pointer;
  transition: all var(--transition);
}
.btn-primary:hover { background: var(--accent-hover); transform: translateY(-1px); box-shadow: var(--shadow-lg); }

.btn-outline {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 28px; border-radius: 8px;
  background: transparent; color: var(--text);
  font-weight: 600; font-size: 0.9rem;
  text-decoration: none; border: 1px solid var(--border);
  transition: all var(--transition);
}
.btn-outline:hover { border-color: var(--accent); color: var(--accent); }

.btn-full { width: 100%; justify-content: center; }

.hero-socials { display: flex; gap: 12px; }
.hero-socials a {
  width: 40px; height: 40px; border-radius: 8px;
  border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  color: var(--text-muted); text-decoration: none;
  transition: all var(--transition);
}
.hero-socials a:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-dim); }

/* Terminal card */
.terminal-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  transition: all var(--transition);
}

.terminal-header {
  display: flex; align-items: center; gap: 8px;
  padding: 12px 16px;
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
}

.terminal-dot {
  width: 10px; height: 10px; border-radius: 50%;
}
.terminal-dot.red { background: #ef4444; }
.terminal-dot.yellow { background: #eab308; }
.terminal-dot.green { background: #22c55e; }

.terminal-title {
  font-size: 0.75rem; color: var(--text-muted);
  margin-left: auto;
}

.terminal-body {
  padding: 20px;
  font-size: 0.82rem;
  line-height: 1.8;
  color: var(--text-muted);
}
.terminal-body pre {
  margin: 0; font-family: inherit;
  white-space: pre-wrap;
}

.json-key { color: var(--accent); }
.json-val { color: #34d399; }
.json-bool { color: #fb923c; }

[data-theme="light"] .json-key { color: #7c3aed; }
[data-theme="light"] .json-val { color: #059669; }
[data-theme="light"] .json-bool { color: #ea580c; }

@media (max-width: 768px) {
  .hero-content { grid-template-columns: 1fr; gap: 40px; }
  .hero-right { order: -1; }
  .hero { padding: 100px 24px 60px; }
}

/* ===== SECTION HEADERS ===== */
.section-header { margin-bottom: 48px; }
.section-label { font-size: 0.85rem; color: var(--accent); display: block; margin-bottom: 8px; }
.section-title {
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  font-weight: 700; color: var(--text-heading);
  transition: color var(--transition);
}
.section-desc { color: var(--text-muted); margin-top: 8px; max-width: 520px; }

/* ===== ABOUT ===== */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }

.about-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 32px;
  transition: all var(--transition);
  opacity: 0; transform: translateY(20px);
}
.about-card.revealed { opacity: 1; transform: translateY(0); transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1); }
.about-card:hover { border-color: var(--border-hover); background: var(--bg-card-hover); }

.about-card-icon {
  width: 44px; height: 44px; border-radius: 10px;
  background: var(--accent-dim);
  display: flex; align-items: center; justify-content: center;
  color: var(--accent); margin-bottom: 20px;
}

.about-card h3 {
  font-size: 1.15rem; font-weight: 600;
  color: var(--text-heading); margin-bottom: 12px;
  transition: color var(--transition);
}

.about-card p { color: var(--text-muted); font-size: 0.95rem; line-height: 1.8; }

.stats-row {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px;
  margin-top: 40px;
}

.stat-item {
  text-align: center;
  padding: 24px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  transition: all var(--transition);
  opacity: 0; transform: translateY(20px);
}
.stat-item.revealed { opacity: 1; transform: translateY(0); transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1); }
.stat-item:hover { border-color: var(--accent); }

.stat-number {
  font-size: 1.8rem; font-weight: 700;
  color: var(--accent); display: block;
  margin-bottom: 4px;
}
.stat-label { font-size: 0.8rem; color: var(--text-muted); }

@media (max-width: 768px) {
  .about-grid { grid-template-columns: 1fr; }
  .stats-row { grid-template-columns: repeat(2, 1fr); }
}

/* ===== PORTFOLIO ===== */
.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.portfolio-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  transition: all var(--transition);
  opacity: 0; transform: translateY(20px);
}
.portfolio-card.revealed { opacity: 1; transform: translateY(0); transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1); }
.portfolio-card:hover { border-color: var(--border-hover); transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.portfolio-card.revealed:hover { transform: translateY(-4px); }

.portfolio-img-wrap { overflow: hidden; }
.portfolio-img-wrap img {
  width: 100%; height: 200px;
  object-fit: cover;
  transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}
.portfolio-card:hover .portfolio-img-wrap img { transform: scale(1.05); }

.portfolio-info {
  padding: 16px 20px;
  display: flex; align-items: center; justify-content: space-between;
}
.portfolio-info h4 {
  font-size: 0.95rem; font-weight: 600;
  color: var(--text-heading);
  transition: color var(--transition);
}
.tag {
  font-size: 0.7rem; color: var(--accent);
  background: var(--accent-dim);
  padding: 4px 10px; border-radius: 6px;
  white-space: nowrap;
}

@media (max-width: 960px) { .portfolio-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .portfolio-grid { grid-template-columns: 1fr; } }

/* ===== CONTACT ===== */
.contact-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 40px;
  transition: all var(--transition);
  opacity: 0; transform: translateY(20px);
}
.contact-card.revealed { opacity: 1; transform: translateY(0); transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1); }

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { margin-bottom: 20px; }

.form-group label {
  display: block; font-size: 0.85rem; font-weight: 500;
  color: var(--text-muted); margin-bottom: 8px;
  font-family: 'JetBrains Mono', monospace;
  transition: color var(--transition);
}

.form-group input, .form-group textarea {
  width: 100%;
  padding: 12px 16px;
  background: var(--input-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-heading);
  font-family: 'Inter', sans-serif;
  font-size: 0.95rem;
  transition: all var(--transition);
  outline: none;
  resize: none;
}
.form-group input::placeholder, .form-group textarea::placeholder { color: var(--text-muted); opacity: 0.6; }
.form-group input:focus, .form-group textarea:focus {
  border-color: var(--accent);
  background: var(--accent-dim);
}

@media (max-width: 600px) {
  .form-row { grid-template-columns: 1fr; }
  .contact-card { padding: 24px; }
}

/* ===== FOOTER ===== */
footer {
  padding: 32px 0;
  border-top: 1px solid var(--border);
  transition: border-color var(--transition);
}

.footer-content {
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 8px;
}
.footer-content p { font-size: 0.8rem; color: var(--text-muted); }
.footer-tagline { font-size: 0.8rem; }

/* ===== REVEAL ANIMATION DELAYS ===== */
.portfolio-card:nth-child(1) { transition-delay: 0s; }
.portfolio-card:nth-child(2) { transition-delay: 0.05s; }
.portfolio-card:nth-child(3) { transition-delay: 0.1s; }
.portfolio-card:nth-child(4) { transition-delay: 0.15s; }
.portfolio-card:nth-child(5) { transition-delay: 0.2s; }
.portfolio-card:nth-child(6) { transition-delay: 0.25s; }
.portfolio-card:nth-child(7) { transition-delay: 0.3s; }
.portfolio-card:nth-child(8) { transition-delay: 0.35s; }
.portfolio-card:nth-child(9) { transition-delay: 0.4s; }

.stat-item:nth-child(1) { transition-delay: 0s; }
.stat-item:nth-child(2) { transition-delay: 0.08s; }
.stat-item:nth-child(3) { transition-delay: 0.16s; }
.stat-item:nth-child(4) { transition-delay: 0.24s; }