/* ========================================
   CSS Variables
   ======================================== */
:root {
  --color-primary: #06b6d4;
  --color-primary-rgb: 6, 182, 212;
  --color-primary-400: #22d3ee;
  --color-secondary: #3b82f6;
  --color-secondary-rgb: 59, 130, 246;
  --color-accent: #8b5cf6;
  --color-accent-rgb: 139, 92, 246;

  --bg-body: #06060b;
  --bg-raised: #0c0c14;
  --bg-glass: rgba(255, 255, 255, 0.025);
  --bg-glass-hover: rgba(255, 255, 255, 0.05);
  --border-subtle: rgba(255, 255, 255, 0.04);
  --border-glass: rgba(255, 255, 255, 0.07);
  --border-glass-hover: rgba(255, 255, 255, 0.13);
  --border-glow: rgba(var(--color-primary-rgb), 0.25);

  --text-heading: #f1f5f9;
  --text-body: #cbd5e1;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  --text-extra-dim: #475569;

  --nav-bg: rgba(6, 6, 11, 0.65);
  --mobile-menu-bg: rgba(6, 6, 11, 0.94);

  --tag-bg: rgba(255, 255, 255, 0.035);
  --tag-border: rgba(255, 255, 255, 0.05);

  --form-input-bg: rgba(255, 255, 255, 0.035);
  --form-input-border: rgba(255, 255, 255, 0.08);
  --form-input-focus-border: var(--color-primary);
  --form-error-color: #f87171;

  --orb-blur: 100px;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4), 0 0 0 1px rgba(255, 255, 255, 0.03);
  --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 60px rgba(var(--color-primary-rgb), 0.08);

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;

  --transition-fast: 0.18s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg-body);
  color: var(--text-body);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  line-height: 1.6;
  transition: background var(--transition-base);
}

/* Subtle noise texture overlay */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.025;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size: 200px 200px;
}

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

::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: #1e293b; border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: #334155; }

/* Selection */
::selection {
  background: rgba(var(--color-primary-rgb), 0.3);
  color: #fff;
}

/* ========================================
   Utility
   ======================================== */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 28px;
}

.glass-card {
  position: relative;
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 32px 36px;
  background:
    linear-gradient(135deg, rgba(255,255,255,0.015) 0%, transparent 50%),
    var(--bg-glass);
  backdrop-filter: blur(28px);
  -webkit-backdrop-filter: blur(28px);
  transition: background var(--transition-base),
              border-color var(--transition-base),
              transform var(--transition-base),
              box-shadow var(--transition-base);
}

.glass-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(135deg, rgba(255,255,255,0.06) 0%, transparent 40%, transparent 60%, rgba(255,255,255,0.04) 100%);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}

.glass-card:hover {
  background:
    linear-gradient(135deg, rgba(255,255,255,0.03) 0%, transparent 50%),
    var(--bg-glass-hover);
  border-color: var(--border-glass-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.gradient-text {
  background: linear-gradient(135deg, var(--color-primary-400), var(--color-secondary), var(--color-accent));
  background-size: 200% 200%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: gradientShift 6s ease-in-out infinite;
}

@keyframes gradientShift {
  0%, 100% { background-position: 0% 50%; }
  50%      { background-position: 100% 50%; }
}

.section {
  padding: 110px 0;
  position: relative;
}

.section-heading {
  text-align: center;
  margin-bottom: 60px;
}

.section-heading h2 {
  font-size: 30px;
  font-weight: 700;
  letter-spacing: -0.5px;
  margin-bottom: 10px;
  color: var(--text-heading);
}

.section-heading h2 .heading-text {
  background: linear-gradient(135deg, var(--color-primary-400), var(--color-secondary), var(--color-accent));
  background-size: 200% 200%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: gradientShift 8s ease-in-out infinite;
}

.section-subtitle {
  color: var(--text-dim);
  font-size: 15px;
  font-weight: 400;
  letter-spacing: 0.3px;
}

/* Reveal animation */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger reveal children */
.reveal.visible .glass-card:nth-child(1) { transition-delay: 0s; }
.reveal.visible .glass-card:nth-child(2) { transition-delay: 0.08s; }
.reveal.visible .glass-card:nth-child(3) { transition-delay: 0.16s; }

/* ========================================
   NavBar
   ======================================== */
#navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  transition: background var(--transition-base),
              border-color var(--transition-base),
              box-shadow var(--transition-base);
}

#navbar.scrolled {
  background: var(--nav-bg);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-bottom: 1px solid var(--border-glass);
  box-shadow: 0 1px 20px rgba(0, 0, 0, 0.35);
}

.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 28px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.3px;
  background: linear-gradient(135deg, var(--color-primary-400), var(--color-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-links { display: flex; gap: 36px; }
.nav-links a {
  position: relative;
  font-size: 13.5px;
  font-weight: 450;
  color: var(--text-muted);
  letter-spacing: 0.2px;
  transition: color var(--transition-fast);
  padding: 4px 0;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1.5px;
  border-radius: 1px;
  background: var(--color-primary);
  transition: width var(--transition-base);
}
.nav-links a:hover,
.nav-links a.active {
  color: #e2e8f0;
}
.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 6px;
}

.theme-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-sm);
  background: var(--bg-glass);
  cursor: pointer;
  font-size: 15px;
  transition: all var(--transition-fast);
  line-height: 1;
}
.theme-btn:hover {
  background: var(--bg-glass-hover);
  border-color: var(--border-glass-hover);
}

.menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.menu-btn span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-muted);
  border-radius: 1px;
  transition: all var(--transition-base);
}

.mobile-menu {
  display: none;
  flex-direction: column;
  background: var(--mobile-menu-bg);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-bottom: 1px solid var(--border-glass);
  padding: 8px 28px 18px;
}
.mobile-menu a {
  padding: 11px 0;
  font-size: 14px;
  color: var(--text-muted);
  transition: color var(--transition-fast);
}
.mobile-menu a:hover,
.mobile-menu a.active {
  color: var(--color-primary);
}
.mobile-menu.open { display: flex; }

/* ========================================
   Hero
   ======================================== */
#hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: 0 28px;
}

#grid-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  opacity: 0.4;
}

.hero-orb {
  position: absolute;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  filter: blur(var(--orb-blur));
  pointer-events: none;
  opacity: 0.7;
}
.hero-orb--left  {
  top: 15%; left: -180px;
  background:
    radial-gradient(circle, rgba(var(--color-primary-rgb), 0.12) 0%, transparent 70%);
}
.hero-orb--right {
  bottom: 20%; right: -180px;
  background:
    radial-gradient(circle, rgba(var(--color-secondary-rgb), 0.12) 0%, transparent 70%);
}

/* Additional accent orb */
#hero::after {
  content: '';
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(var(--color-accent-rgb), 0.04) 0%, transparent 60%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 680px;
}

.hero-greeting {
  display: inline-block;
  font-size: 13px;
  color: var(--color-primary);
  font-family: ui-monospace, 'Cascadia Code', Consolas, monospace;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  margin-bottom: 20px;
  padding: 6px 16px;
  border: 1px solid rgba(var(--color-primary-rgb), 0.18);
  border-radius: var(--radius-full);
  background: rgba(var(--color-primary-rgb), 0.06);
  animation: fadeInUp 0.6s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

.hero-content h1 {
  font-size: clamp(40px, 8vw, 76px);
  font-weight: 800;
  letter-spacing: -1.5px;
  margin-bottom: 10px;
  line-height: 1.08;
  color: var(--text-heading);
}

.hero-content h1 .gradient-text {
  text-shadow: 0 0 80px rgba(var(--color-primary-rgb), 0.2);
}

.hero-role {
  height: 30px;
  margin-bottom: 24px;
  font-size: 19px;
  color: var(--text-muted);
  font-family: ui-monospace, 'Cascadia Code', Consolas, monospace;
  font-weight: 400;
}

.cursor {
  display: inline-block;
  width: 2px;
  height: 18px;
  background: var(--color-primary);
  margin-left: 2px;
  animation: blink 0.8s infinite;
  vertical-align: middle;
  border-radius: 1px;
}
@keyframes blink { 0%,100%{opacity:1} 50%{opacity:0} }

.hero-bio {
  color: var(--text-dim);
  font-size: 15px;
  line-height: 1.75;
  max-width: 500px;
  margin: 0 auto 40px;
}

.hero-actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 12px 30px;
  border-radius: var(--radius-full);
  border: none;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  color: #fff;
  font-size: 14px;
  font-weight: 550;
  font-family: inherit;
  cursor: pointer;
  letter-spacing: 0.2px;
  position: relative;
  transition: transform var(--transition-base),
              box-shadow var(--transition-base);
}
.btn-primary::after {
  content: '';
  position: absolute;
  inset: -2px;
  border-radius: inherit;
  background: linear-gradient(135deg, var(--color-primary-400), var(--color-secondary));
  opacity: 0;
  filter: blur(12px);
  z-index: -1;
  transition: opacity var(--transition-base);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(var(--color-primary-rgb), 0.35);
}
.btn-primary:hover::after {
  opacity: 0.5;
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 12px 30px;
  border-radius: var(--radius-full);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: #d1d5db;
  font-size: 14px;
  font-weight: 500;
  font-family: inherit;
  cursor: pointer;
  background: rgba(255, 255, 255, 0.02);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  letter-spacing: 0.2px;
  transition: all var(--transition-base);
}
.btn-outline:hover {
  border-color: rgba(var(--color-primary-rgb), 0.5);
  color: var(--color-primary-400);
  background: rgba(var(--color-primary-rgb), 0.06);
  box-shadow: 0 0 24px rgba(var(--color-primary-rgb), 0.08);
}

.scroll-indicator {
  position: absolute;
  bottom: 36px;
  left: 50%;
  transform: translateX(-50%);
  animation: float 3s ease-in-out infinite;
  cursor: pointer;
  display: flex;
  color: var(--text-muted);
  opacity: 0.65;
  transition: color var(--transition-fast), opacity var(--transition-fast);
}
.scroll-indicator:hover {
  opacity: 1;
}
.scroll-indicator:hover {
  color: var(--color-primary);
}
@keyframes float {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50%      { transform: translateX(-50%) translateY(-7px); }
}

/* ========================================
   Section divider
   ======================================== */
.section + .section::before {
  content: '';
  display: block;
  width: 60px;
  height: 2px;
  margin: 0 auto;
  border-radius: 1px;
  background: linear-gradient(90deg, transparent, rgba(var(--color-primary-rgb), 0.25), transparent);
}

/* ========================================
   About
   ======================================== */
.about-grid {
  display: grid;
  grid-template-columns: 2fr 3fr;
  gap: 40px;
  align-items: center;
}

.about-avatar-wrapper { position: relative; display: flex; justify-content: center; }

.about-avatar {
  width: 200px;
  height: 200px;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(var(--color-primary-rgb), 0.12), rgba(var(--color-secondary-rgb), 0.12));
  border: 1px solid var(--border-glass);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 72px;
  user-select: none;
  position: relative;
  overflow: hidden;
}
.about-avatar::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.03) 0%, transparent 50%);
  border-radius: inherit;
  pointer-events: none;
}

.avatar-dot {
  position: absolute;
  bottom: 6px;
  right: calc(50% - 100px + 6px);
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary-400), var(--color-secondary));
  box-shadow:
    0 0 20px rgba(var(--color-primary-rgb), 0.4),
    0 0 40px rgba(var(--color-primary-rgb), 0.15);
  border: 3px solid var(--bg-body);
}

.about-card h3 {
  font-size: 22px;
  font-weight: 650;
  color: var(--text-heading);
  margin-bottom: 14px;
  letter-spacing: -0.3px;
}
.about-card p {
  color: var(--text-muted);
  font-size: 14.5px;
  line-height: 1.72;
  margin-bottom: 20px;
}

.about-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  font-size: 13px;
  color: var(--text-dim);
}
.about-meta span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.about-meta svg { color: var(--color-primary); flex-shrink: 0; }

/* ========================================
   Skills
   ======================================== */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 22px;
}

.skill-cat {
  font-size: 11px;
  font-weight: 650;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 6px;
}

.skill-subtitle-sm {
  font-size: 12px;
  color: var(--text-dim);
  margin-bottom: 18px;
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.skill-tags span {
  padding: 7px 15px;
  border-radius: var(--radius-sm);
  font-size: 12.5px;
  font-weight: 480;
  color: var(--text-muted);
  background: var(--tag-bg);
  border: 1px solid var(--tag-border);
  cursor: default;
  transition: all var(--transition-fast);
}
.skill-tags span:hover {
  border-color: rgba(var(--color-primary-rgb), 0.45);
  color: var(--color-primary-400);
  background: rgba(var(--color-primary-rgb), 0.07);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(var(--color-primary-rgb), 0.08);
}

/* ========================================
   Projects Filter
   ======================================== */
.filter-bar {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: 36px;
  flex-wrap: wrap;
}

.filter-btn {
  padding: 8px 22px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-glass);
  background: var(--bg-glass);
  color: var(--text-muted);
  font-size: 13px;
  font-weight: 500;
  font-family: inherit;
  cursor: pointer;
  letter-spacing: 0.3px;
  transition: all var(--transition-base);
}
.filter-btn:hover {
  border-color: rgba(var(--color-primary-rgb), 0.4);
  color: var(--color-primary-400);
}
.filter-btn.active {
  background: rgba(var(--color-primary-rgb), 0.13);
  border-color: rgba(var(--color-primary-rgb), 0.5);
  color: var(--color-primary-400);
  box-shadow: 0 0 20px rgba(var(--color-primary-rgb), 0.1);
}

/* ========================================
   Projects
   ======================================== */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(310px, 1fr));
  gap: 22px;
}

.project-card .project-img {
  width: 100%;
  height: 160px;
  border-radius: var(--radius-md);
  background:
    radial-gradient(circle at 50% 50%, rgba(var(--color-primary-rgb), 0.06) 0%, transparent 70%),
    var(--bg-raised);
  border: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 56px;
  margin-bottom: 20px;
  position: relative;
  overflow: hidden;
  transition: border-color var(--transition-base),
              box-shadow var(--transition-base);
}
.project-card .project-img::before {
  content: '';
  position: absolute;
  width: 90px;
  height: 90px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(var(--color-primary-rgb), 0.18) 0%, transparent 70%);
  filter: blur(20px);
  transition: all var(--transition-slow);
}
.project-card .project-img::after {
  content: '';
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(255,255,255,0.025) 0%, transparent 35%),
    radial-gradient(circle at 20% 80%, rgba(var(--color-primary-rgb), 0.04) 0%, transparent 50%);
  border-radius: inherit;
  pointer-events: none;
}
.project-card .project-img .project-icon-label {
  position: relative;
  z-index: 2;
  filter: drop-shadow(0 0 16px rgba(var(--color-primary-rgb), 0.35));
  transition: transform var(--transition-slow);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
}

/* Decorative corner lines */
.project-card .project-img .corner-tl,
.project-card .project-img .corner-br {
  position: absolute;
  width: 24px;
  height: 24px;
  opacity: 0.25;
  transition: all var(--transition-slow);
  z-index: 3;
}
.project-card .project-img .corner-tl {
  top: 10px; left: 10px;
  border-top: 1.5px solid rgba(var(--color-primary-rgb), 0.5);
  border-left: 1.5px solid rgba(var(--color-primary-rgb), 0.5);
  border-radius: 4px 0 0 0;
}
.project-card .project-img .corner-br {
  bottom: 10px; right: 10px;
  border-bottom: 1.5px solid rgba(var(--color-primary-rgb), 0.5);
  border-right: 1.5px solid rgba(var(--color-primary-rgb), 0.5);
  border-radius: 0 0 4px 0;
}

/* Hover effects */
.project-card:hover .project-img {
  border-color: var(--border-glass-hover);
  box-shadow: inset 0 0 40px rgba(var(--color-primary-rgb), 0.04);
}
.project-card:hover .project-img::before {
  transform: scale(1.5);
  background: radial-gradient(circle, rgba(var(--color-primary-rgb), 0.25) 0%, transparent 70%);
}
.project-card:hover .project-img .project-icon-label {
  transform: scale(1.12);
}
.project-card:hover .project-img .corner-tl,
.project-card:hover .project-img .corner-br {
  opacity: 0.6;
  width: 30px;
  height: 30px;
}

/* Per-card accent colors */
.project-card:nth-child(1) .project-img {
  --accent-rgb: 244, 114, 182;
}
.project-card:nth-child(1) .project-img::before {
  background: radial-gradient(circle, rgba(244, 114, 182, 0.2) 0%, transparent 70%);
}
.project-card:nth-child(1) .project-img .project-icon-label {
  filter: drop-shadow(0 0 18px rgba(244, 114, 182, 0.4));
}
.project-card:nth-child(1) .project-img .corner-tl,
.project-card:nth-child(1) .project-img .corner-br {
  border-color: rgba(244, 114, 182, 0.5);
}

.project-card:nth-child(2) .project-img {
  --accent-rgb: 234, 179, 8;
}
.project-card:nth-child(2) .project-img::before {
  background: radial-gradient(circle, rgba(234, 179, 8, 0.2) 0%, transparent 70%);
}
.project-card:nth-child(2) .project-img .project-icon-label {
  filter: drop-shadow(0 0 18px rgba(234, 179, 8, 0.4));
}
.project-card:nth-child(2) .project-img .corner-tl,
.project-card:nth-child(2) .project-img .corner-br {
  border-color: rgba(234, 179, 8, 0.5);
}

.project-card:nth-child(3) .project-img {
  --accent-rgb: 6, 182, 212;
}
.project-card:nth-child(3) .project-img::before {
  background: radial-gradient(circle, rgba(6, 182, 212, 0.2) 0%, transparent 70%);
}
.project-card:nth-child(3) .project-img .project-icon-label {
  filter: drop-shadow(0 0 18px rgba(6, 182, 212, 0.4));
}
.project-card:nth-child(3) .project-img .corner-tl,
.project-card:nth-child(3) .project-img .corner-br {
  border-color: rgba(6, 182, 212, 0.5);
}

.project-card:nth-child(4) .project-img {
  --accent-rgb: 245, 158, 11;
}
.project-card:nth-child(4) .project-img::before {
  background: radial-gradient(circle, rgba(245, 158, 11, 0.2) 0%, transparent 70%);
}
.project-card:nth-child(4) .project-img .project-icon-label {
  filter: drop-shadow(0 0 18px rgba(245, 158, 11, 0.4));
}
.project-card:nth-child(4) .project-img .corner-tl,
.project-card:nth-child(4) .project-img .corner-br {
  border-color: rgba(245, 158, 11, 0.5);
}

.project-card:nth-child(5) .project-img {
  --accent-rgb: 139, 92, 246;
}
.project-card:nth-child(5) .project-img::before {
  background: radial-gradient(circle, rgba(139, 92, 246, 0.12) 0%, transparent 70%);
}
.project-card:nth-child(5) .project-img .project-icon-label {
  filter: drop-shadow(0 0 14px rgba(139, 92, 246, 0.25));
}
.project-card:nth-child(5) .project-img .corner-tl,
.project-card:nth-child(5) .project-img .corner-br {
  border-color: rgba(139, 92, 246, 0.35);
}

.project-card h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--text-heading);
  margin-bottom: 8px;
  letter-spacing: -0.2px;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

/* Green status badge */
.status-badge {
  font-size: 11px;
  font-weight: 500;
  color: #22c55e;
  letter-spacing: 0.3px;
  animation: statusPulse 2s ease-in-out infinite;
}
@keyframes statusPulse {
  0%, 100% { opacity: 1; }
  50%      { opacity: 0.7; }
}

.project-card > p {
  font-size: 13.5px;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 16px;
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
  margin-bottom: 16px;
}
.project-tech span {
  padding: 3px 10px;
  border-radius: var(--radius-sm);
  font-size: 11px;
  font-weight: 500;
  color: var(--color-primary-400);
  background: rgba(var(--color-primary-rgb), 0.08);
  border: 1px solid rgba(var(--color-primary-rgb), 0.12);
  transition: all var(--transition-fast);
}
.project-tech span:hover {
  background: rgba(var(--color-primary-rgb), 0.14);
  border-color: rgba(var(--color-primary-rgb), 0.3);
}

.project-links {
  display: flex;
  gap: 14px;
}
.project-links a {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 12.5px;
  color: var(--text-dim);
  font-weight: 450;
  transition: color var(--transition-fast);
}
.project-links a:hover { color: var(--color-primary-400); }

/* Coming soon tag */
.coming-soon-tag {
  font-size: 12px;
  color: var(--text-extra-dim);
  font-weight: 500;
  letter-spacing: 0.3px;
}

/* Placeholder card */
.project-card--placeholder {
  opacity: 0.55;
}
.project-card--placeholder:hover {
  opacity: 0.75;
}
.project-card--placeholder .project-img {
  border-style: dashed;
}

/* ========================================
   Contact
   ======================================== */
.contact-wrapper {
  max-width: 560px;
  margin: 0 auto;
}

.contact-card {
  text-align: center;
  margin-bottom: 36px;
}
.contact-card > p {
  font-size: 14.5px;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 30px;
}

.social-links {
  display: flex;
  justify-content: center;
  gap: 36px;
  flex-wrap: wrap;
}

.social-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 7px;
  color: var(--text-dim);
  transition: color var(--transition-fast);
}
.social-item:hover { color: var(--color-primary-400); }

.social-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  background: var(--bg-glass);
  border: 1px solid var(--border-glass);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-base);
  position: relative;
}
.social-item:hover .social-icon {
  border-color: rgba(var(--color-primary-rgb), 0.45);
  background: rgba(var(--color-primary-rgb), 0.07);
  transform: scale(1.06);
  box-shadow: 0 8px 24px rgba(var(--color-primary-rgb), 0.12);
}
.social-item span { font-size: 11px; font-weight: 500; letter-spacing: 0.3px; }

/* Contact Buttons */
.contact-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-top: 36px;
  flex-wrap: wrap;
}

.contact-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-glass);
  background: var(--bg-glass);
  color: var(--text-body);
  font-size: 14px;
  font-weight: 550;
  font-family: inherit;
  cursor: pointer;
  letter-spacing: 0.3px;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: all var(--transition-base);
}
.contact-btn:hover {
  transform: translateY(-2px);
}
.contact-btn--qq:hover {
  border-color: #12b7f5;
  color: #12b7f5;
  background: rgba(18, 183, 245, 0.08);
  box-shadow: 0 8px 24px rgba(18, 183, 245, 0.15);
}
.contact-btn--wechat:hover {
  border-color: #07c160;
  color: #07c160;
  background: rgba(7, 193, 96, 0.08);
  box-shadow: 0 8px 24px rgba(7, 193, 96, 0.15);
}
.contact-btn--email:hover {
  border-color: var(--color-primary);
  color: var(--color-primary-400);
  background: rgba(var(--color-primary-rgb), 0.08);
  box-shadow: 0 8px 24px rgba(var(--color-primary-rgb), 0.15);
}

.contact-btn-icon {
  display: flex;
  align-items: center;
}

/* Email dropdown */
.email-btn-wrapper {
  position: relative;
}

.email-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  min-width: 260px;
  background: var(--bg-raised);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: 6px;
  box-shadow: var(--shadow-lg);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  opacity: 0;
  visibility: hidden;
  transform: translateX(-50%) translateY(-6px);
  transition: opacity var(--transition-fast),
              visibility var(--transition-fast),
              transform var(--transition-fast);
  z-index: 50;
}
.email-dropdown.open {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.email-option {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 10px 14px;
  border: none;
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--text-muted);
  font-size: 13px;
  font-family: ui-monospace, Consolas, monospace;
  cursor: pointer;
  transition: all var(--transition-fast);
  gap: 12px;
}
.email-option:hover {
  background: var(--bg-glass-hover);
  color: var(--color-primary-400);
}
.email-option svg { flex-shrink: 0; opacity: 0.5; }
.email-option:hover svg { opacity: 1; }

/* Copy toast */
.copy-toast {
  position: fixed;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  padding: 10px 24px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-glass);
  color: var(--text-heading);
  font-size: 13px;
  font-weight: 500;
  font-family: inherit;
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--transition-base),
              transform var(--transition-base);
  z-index: 200;
}
.copy-toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ========================================
   Footer
   ======================================== */
footer {
  border-top: 1px solid var(--border-subtle);
  padding: 28px 0;
}

.footer-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

footer p { font-size: 12.5px; color: var(--text-extra-dim); }

#back-to-top {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background: none;
  border: none;
  font-size: 12.5px;
  color: var(--text-extra-dim);
  cursor: pointer;
  transition: color var(--transition-fast);
  font-family: inherit;
}
#back-to-top:hover { color: var(--color-primary-400); }

/* ========================================
   Responsive
   ======================================== */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .menu-btn { display: flex; }

  .section { padding: 80px 0; }

  .section-heading { margin-bottom: 44px; }
  .section-heading h2 { font-size: 26px; }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .about-avatar {
    width: 160px;
    height: 160px;
    font-size: 56px;
  }
  .avatar-dot {
    bottom: 4px;
    right: calc(50% - 80px + 4px);
    width: 34px;
    height: 34px;
  }

  .projects-grid {
    grid-template-columns: 1fr;
  }

  .social-links { gap: 28px; }

  .hero-orb { width: 260px; height: 260px; }

  .hero-content h1 { font-size: clamp(30px, 10vw, 48px); }

  .glass-card { padding: 24px 22px; }

  .footer-inner { flex-direction: column; gap: 14px; }

  .contact-form { padding: 22px; }
}

@media (min-width: 769px) and (max-width: 1024px) {
  .about-grid {
    grid-template-columns: 1fr 1fr;
  }
}