/* ════════════════════════════════════════════════════════════════════════════
   style.css — SHIVANK Portfolio
   Core design system, tokens, layout, all section styles
   ════════════════════════════════════════════════════════════════════════════ */

/* ── Google Fonts ────────────────────────────────────────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500;600&display=swap');

/* ── Design Tokens ───────────────────────────────────────────────────────────── */
:root {
  /* Colors — Dark Theme (default) */
  --bg:           #09090B;
  --bg-card:      #111827;
  --bg-card-2:    #0f172a;
  --accent:       #3B82F6;
  --accent-2:     #8B5CF6;
  --success:      #22C55E;
  --danger:       #EF4444;
  --text:         #FFFFFF;
  --text-muted:   #9CA3AF;
  --text-subtle:  #6B7280;
  --border:       rgba(255,255,255,0.08);
  --border-hover: rgba(59,130,246,0.35);

  /* Glass */
  --glass-bg:     rgba(17,24,39,0.55);
  --glass-blur:   blur(20px);
  --glass-border: rgba(255,255,255,0.08);

  /* Typography */
  --font-sans:  'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono:  'JetBrains Mono', 'Fira Code', monospace;

  /* Font Sizes */
  --fs-hero-name:    clamp(3rem, 8vw, 5.5rem);
  --fs-hero-sub:     clamp(1.2rem, 3vw, 1.6rem);
  --fs-section-title: clamp(1.8rem, 4vw, 2.6rem);
  --fs-card-title:   1.15rem;
  --fs-body:         0.9375rem;

  /* Spacing */
  --section-padding: 100px 24px;
  --container-max:   1100px;
  --radius-sm:       8px;
  --radius-md:       14px;
  --radius-lg:       20px;
  --radius-xl:       28px;

  /* Shadows */
  --shadow-card:   0 4px 24px rgba(0,0,0,0.35), 0 1px 3px rgba(0,0,0,0.5);
  --shadow-glow:   0 0 40px rgba(59,130,246,0.2);
  --shadow-hover:  0 20px 60px rgba(0,0,0,0.5);

  /* Transitions */
  --ease-spring: cubic-bezier(0.16, 1, 0.3, 1);
}

/* ── Light Theme Override ────────────────────────────────────────────────────── */
[data-theme="light"] {
  --bg:           #f8fafc;
  --bg-card:      #ffffff;
  --bg-card-2:    #f1f5f9;
  --text:         #0f172a;
  --text-muted:   #475569;
  --text-subtle:  #94a3b8;
  --border:       rgba(0,0,0,0.08);
  --glass-bg:     rgba(255,255,255,0.7);
  --glass-border: rgba(0,0,0,0.06);
  --shadow-card:  0 4px 24px rgba(0,0,0,0.08);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  background-color: var(--bg);
  color: var(--text);
  line-height: 1.65;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

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

ul { list-style: none; }
button { cursor: pointer; font-family: inherit; border: none; }

/* ── Utility Classes ─────────────────────────────────────────────────────────── */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
  width: 100%;
}

.section {
  padding: var(--section-padding);
}

.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-eyebrow {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--accent);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 12px;
  padding: 4px 14px;
  background: rgba(59,130,246,0.1);
  border: 1px solid rgba(59,130,246,0.2);
  border-radius: 100px;
}

.section-title {
  font-size: var(--fs-section-title);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.025em;
  margin-bottom: 16px;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 560px;
  margin: 0 auto;
}

/* ── Glass Card ──────────────────────────────────────────────────────────────── */
.glass-card {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

/* ── Buttons ─────────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 28px;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  font-weight: 600;
  font-family: var(--font-sans);
  letter-spacing: 0.01em;
  cursor: pointer;
  border: none;
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 0 0 0 rgba(59,130,246,0);
}

.btn-secondary {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  background: rgba(255,255,255,0.05);
  border-color: rgba(255,255,255,0.18);
}

.btn-sm {
  padding: 8px 18px;
  font-size: 0.82rem;
}

.btn-outline-accent {
  background: transparent;
  color: var(--accent);
  border: 1px solid rgba(59,130,246,0.4);
}
.btn-outline-accent:hover {
  background: rgba(59,130,246,0.1);
  border-color: var(--accent);
}

/* ── Tag / Badge ─────────────────────────────────────────────────────────────── */
.tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  padding: 3px 10px;
  border-radius: 100px;
  background: rgba(59,130,246,0.12);
  color: var(--accent);
  border: 1px solid rgba(59,130,246,0.2);
  white-space: nowrap;
}

.tag-purple {
  background: rgba(139,92,246,0.12);
  color: var(--accent-2);
  border-color: rgba(139,92,246,0.2);
}

.tag-green {
  background: rgba(34,197,94,0.12);
  color: var(--success);
  border-color: rgba(34,197,94,0.2);
}

/* ══════════════════════════════════════════════════════════════════════════════
   NAVBAR
══════════════════════════════════════════════════════════════════════════════ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 20px 24px;
  transition: padding 0.3s ease, background 0.3s ease, backdrop-filter 0.3s ease;
}

.navbar.scrolled {
  padding: 14px 24px;
  background: rgba(9,9,11,0.85);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-bottom: 1px solid var(--border);
}

[data-theme="light"] .navbar.scrolled {
  background: rgba(248,250,252,0.85);
}

.nav-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
  text-decoration: none;
  color: var(--text);
  flex-shrink: 0;
}

.nav-logo-mark {
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  font-weight: 800;
  color: white;
  flex-shrink: 0;
}

.nav-links-wrap {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-link {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-muted);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  transition: color 0.2s ease, background 0.2s ease;
  text-decoration: none;
}

.nav-link:hover,
.nav-link.active {
  color: var(--text);
  background: rgba(255,255,255,0.06);
}

[data-theme="light"] .nav-link:hover,
[data-theme="light"] .nav-link.active {
  background: rgba(0,0,0,0.05);
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.nav-theme-btn {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-muted);
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.nav-theme-btn:hover {
  color: var(--text);
  border-color: rgba(255,255,255,0.2);
  background: rgba(255,255,255,0.05);
}

.nav-cli-btn {
  background: rgba(56, 189, 248, 0.08);
  border: 1px solid rgba(56, 189, 248, 0.25);
  color: #38bdf8;
  height: 36px;
  padding: 0 12px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}

.nav-cli-btn:hover {
  background: rgba(56, 189, 248, 0.2);
  border-color: #38bdf8;
  color: #fff;
  box-shadow: 0 0 12px rgba(56, 189, 248, 0.3);
}

.nav-cli-badge {
  background: rgba(56, 189, 248, 0.2);
  color: #7dd3fc;
  padding: 1px 5px;
  border-radius: 3px;
  font-size: 0.7rem;
}

/* Hamburger */
#hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 6px;
  cursor: pointer;
  z-index: 999;
}

.hamburger-bar {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease;
  transform-origin: center;
}

#hamburger.active .hamburger-bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
#hamburger.active .hamburger-bar:nth-child(2) { opacity: 0; }
#hamburger.active .hamburger-bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ══════════════════════════════════════════════════════════════════════════════
   HERO
══════════════════════════════════════════════════════════════════════════════ */
.hero-section {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 120px 24px 80px;
  overflow: hidden;
  text-align: center;
}

/* Animated grid background */
.hero-grid-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(59,130,246,0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(59,130,246,0.06) 1px, transparent 1px);
  background-size: 60px 60px;
  animation: heroGridDrift 20s linear infinite alternate;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 30%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 30%, transparent 100%);
}

/* Blur blobs */
.hero-blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  pointer-events: none;
}
.hero-blob-1 {
  width: 600px;
  height: 600px;
  background: rgba(59,130,246,0.12);
  top: -200px;
  left: -150px;
}
.hero-blob-2 {
  width: 500px;
  height: 500px;
  background: rgba(139,92,246,0.1);
  bottom: -150px;
  right: -100px;
}
.hero-blob-3 {
  width: 300px;
  height: 300px;
  background: rgba(34,197,94,0.06);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

/* Particle canvas */
#particle-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

/* Mouse spotlight */
#mouse-spotlight {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  transition: background 0.15s ease;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
  margin: 0 auto;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(59,130,246,0.1);
  border: 1px solid rgba(59,130,246,0.25);
  border-radius: 100px;
  padding: 6px 18px 6px 8px;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--accent);
  margin-bottom: 28px;
}

.hero-badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 8px var(--success);
  animation: glowPulse 2s ease infinite;
}

.hero-title {
  font-size: var(--fs-hero-name);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.05;
  margin-bottom: 20px;
}

.hero-subtitle {
  font-size: var(--fs-hero-sub);
  font-family: var(--font-mono);
  font-weight: 500;
  color: var(--text-muted);
  margin-bottom: 24px;
  min-height: 2em;
}

.hero-description {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 520px;
  margin: 0 auto 40px;
  line-height: 1.75;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 64px;
}

/* Stats row */
.stats-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}

.stat-item {
  text-align: center;
}

.stat-number {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  color: var(--text);
  line-height: 1;
  margin-bottom: 6px;
}

.stat-label {
  font-size: 0.78rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 500;
}

.scroll-indicator {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--text-subtle);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  animation: float 2.5s ease-in-out infinite;
  z-index: 2;
}

.scroll-arrow {
  width: 24px;
  height: 24px;
  border-right: 2px solid var(--text-subtle);
  border-bottom: 2px solid var(--text-subtle);
  transform: rotate(45deg);
  margin-top: -4px;
}

/* ══════════════════════════════════════════════════════════════════════════════
   ABOUT
══════════════════════════════════════════════════════════════════════════════ */
.about-section {
  background: var(--bg);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: 64px;
  align-items: center;
}

.about-avatar-wrap {
  position: relative;
}

.about-avatar-frame {
  position: relative;
  width: 240px;
  height: 240px;
  margin: 0 auto;
}

.about-avatar {
  width: 240px;
  height: 240px;
  border-radius: var(--radius-xl);
  object-fit: cover;
  border: 2px solid rgba(59,130,246,0.3);
  box-shadow: 0 0 60px rgba(59,130,246,0.15);
  background: linear-gradient(135deg, var(--bg-card), var(--bg-card-2));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 5rem;
  overflow: hidden;
  position: relative;
}

.avatar-emoji {
  font-size: 7rem;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
}

.avatar-badge {
  position: absolute;
  bottom: -12px;
  right: -12px;
  background: var(--accent);
  color: white;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 6px 12px;
  border-radius: 100px;
  white-space: nowrap;
  box-shadow: 0 4px 16px rgba(59,130,246,0.4);
}

.about-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 16px;
}

.about-title {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
}

.about-text {
  color: var(--text-muted);
  line-height: 1.8;
  margin-bottom: 32px;
}

.about-text p + p {
  margin-top: 14px;
}

.about-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 32px;
}

.about-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--glass-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 6px 14px;
  font-size: 0.82rem;
  font-weight: 500;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  color: var(--text-muted);
}

/* ══════════════════════════════════════════════════════════════════════════════
   SKILLS
══════════════════════════════════════════════════════════════════════════════ */
.skills-section {
  background: var(--bg-card-2);
}

.skills-categories {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.skill-category {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
}

.skill-category-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}

.skill-category-icon {
  font-size: 1.4rem;
}

.skill-category-title {
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
}

.skills-grid {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.skill-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.skill-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.skill-name {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text);
}

.skill-pct {
  font-size: 0.75rem;
  font-family: var(--font-mono);
  color: var(--text-muted);
}

.skill-bar {
  height: 5px;
  background: rgba(255,255,255,0.07);
  border-radius: 100px;
  overflow: hidden;
}

.skill-bar-fill {
  height: 100%;
  border-radius: 100px;
  width: 0%;
  background: linear-gradient(to right, var(--accent), var(--accent-2));
  transition: width 1.2s cubic-bezier(0.16,1,0.3,1);
}

/* ══════════════════════════════════════════════════════════════════════════════
   SERVICES
══════════════════════════════════════════════════════════════════════════════ */
.services-section {
  background: var(--bg);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.service-card {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  transition: transform 0.3s var(--ease-spring), box-shadow 0.3s ease, border-color 0.3s ease;
}

.service-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 24px 60px rgba(0,0,0,0.4), 0 0 30px rgba(59,130,246,0.1);
  border-color: var(--border-hover);
}

.service-icon {
  font-size: 2.4rem;
  margin-bottom: 20px;
  display: block;
}

.service-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}

.service-description {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 20px;
}

.service-features {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.service-feature {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.82rem;
  color: var(--text-muted);
}

.service-feature::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
}

/* ══════════════════════════════════════════════════════════════════════════════
   PROJECTS
══════════════════════════════════════════════════════════════════════════════ */
.projects-section {
  background: var(--bg-card-2);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.project-card {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.3s var(--ease-spring), box-shadow 0.3s ease, border-color 0.3s ease;
}

.project-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 24px 60px rgba(0,0,0,0.4), 0 0 40px rgba(59,130,246,0.08);
  border-color: var(--border-hover);
}

.project-img-wrap {
  overflow: hidden;
  aspect-ratio: 16/10;
  background: var(--bg-card);
}

.project-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s var(--ease-spring);
}

.project-card:hover .project-img {
  transform: scale(1.05);
}

.project-body {
  padding: 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 14px;
}

.project-title {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 10px;
}

.project-description {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.7;
  flex: 1;
  margin-bottom: 20px;
}

.project-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

/* ══════════════════════════════════════════════════════════════════════════════
   3D PRINTING
══════════════════════════════════════════════════════════════════════════════ */
.printing-section {
  background: var(--bg);
}

.printing-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}

.printing-info-card {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
}

.printer-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border);
}

.printer-icon {
  font-size: 2rem;
}

.printer-name {
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.printer-model {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.printer-specs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 28px;
}

.spec-item {
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px;
}

.spec-label {
  font-size: 0.72rem;
  color: var(--text-subtle);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 4px;
}

.spec-value {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text);
  font-family: var(--font-mono);
}

.materials-title {
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.materials-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.material-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  background: rgba(139,92,246,0.1);
  border: 1px solid rgba(139,92,246,0.2);
  border-radius: 100px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent-2);
}

.printing-services {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.printing-service-card {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  display: flex;
  align-items: center;
  gap: 16px;
  transition: border-color 0.25s ease, transform 0.25s var(--ease-spring);
}

.printing-service-card:hover {
  border-color: var(--border-hover);
  transform: translateX(4px);
}

.ps-icon {
  font-size: 1.8rem;
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  background: rgba(139,92,246,0.1);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
}

.ps-title {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.ps-description {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.printing-cta {
  text-align: center;
  margin-top: 56px;
  padding: 48px 32px;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
}

.printing-cta h3 {
  font-size: 1.6rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 12px;
}

.printing-cta p {
  color: var(--text-muted);
  margin-bottom: 28px;
}

/* ══════════════════════════════════════════════════════════════════════════════
   YOUTUBE
══════════════════════════════════════════════════════════════════════════════ */
.youtube-section {
  background: var(--bg-card-2);
}

.yt-layout {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 48px;
  align-items: center;
}

.yt-info-card {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px;
}

.yt-channel-icon {
  font-size: 3rem;
  margin-bottom: 16px;
}

.yt-channel-name {
  font-size: 1.4rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 8px;
}

.yt-channel-handle {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.yt-description {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 28px;
}

.yt-stats {
  display: flex;
  gap: 24px;
  margin-bottom: 28px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border);
}

.yt-stat-num {
  font-size: 1.4rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--text);
}

.yt-stat-label {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.btn-yt {
  background: #FF0000;
  color: white;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-md);
  font-weight: 700;
  font-size: 0.9rem;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn-yt:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(255,0,0,0.35);
}

.yt-embed-wrap {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  aspect-ratio: 16/10;
  background: var(--bg-card);
  position: relative;
}

.yt-embed-wrap iframe {
  width: 100%;
  height: 100%;
  border: none;
  display: block;
}

/* ══════════════════════════════════════════════════════════════════════════════
   TIMELINE
══════════════════════════════════════════════════════════════════════════════ */
.timeline-section {
  background: var(--bg);
}

.timeline {
  position: relative;
  max-width: 680px;
  margin: 0 auto;
  padding-left: 40px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 8px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--accent), var(--accent-2), transparent);
  border-radius: 2px;
}

.timeline-item {
  position: relative;
  padding-left: 28px;
  padding-bottom: 40px;
}

.timeline-item:last-child {
  padding-bottom: 0;
}

.timeline-dot {
  position: absolute;
  left: -8px;
  top: 4px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--accent);
  border: 3px solid var(--bg);
  box-shadow: 0 0 16px rgba(59,130,246,0.5);
  z-index: 1;
}

.timeline-dot.future {
  background: var(--accent-2);
  box-shadow: 0 0 16px rgba(139,92,246,0.5);
}

.timeline-date {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 8px;
}

.timeline-item:has(.timeline-dot.future) .timeline-date {
  color: var(--accent-2);
}

.timeline-card {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  transition: border-color 0.25s ease;
}

.timeline-card:hover {
  border-color: var(--border-hover);
}

.timeline-title {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}

.timeline-text {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.65;
}

/* ══════════════════════════════════════════════════════════════════════════════
   CONTACT
══════════════════════════════════════════════════════════════════════════════ */
.contact-section {
  background: var(--bg-card-2);
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 40px;
}

.contact-card {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  text-align: center;
  transition: transform 0.3s var(--ease-spring), border-color 0.3s ease, box-shadow 0.3s ease;
  cursor: pointer;
  text-decoration: none;
  color: var(--text);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
}

.contact-card:hover {
  transform: translateY(-5px);
  border-color: var(--border-hover);
  box-shadow: 0 16px 40px rgba(0,0,0,0.3), 0 0 24px rgba(59,130,246,0.1);
}

.contact-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
}

.contact-icon.blue  { background: rgba(59,130,246,0.12); border: 1px solid rgba(59,130,246,0.2); }
.contact-icon.red   { background: rgba(255,0,0,0.1);     border: 1px solid rgba(255,0,0,0.2); }
.contact-icon.green { background: rgba(34,197,94,0.1);   border: 1px solid rgba(34,197,94,0.2); }
.contact-icon.purple { background: rgba(139,92,246,0.12); border: 1px solid rgba(139,92,246,0.2); }
.contact-icon.gray  { background: rgba(255,255,255,0.06); border: 1px solid var(--border); }

.contact-label {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  font-weight: 600;
}

.contact-value {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text);
  word-break: break-all;
}

.contact-card.coming-soon {
  opacity: 0.5;
  pointer-events: none;
}

.contact-card.coming-soon .contact-value {
  color: var(--text-subtle);
}

/* Contact CTA */
.contact-cta-card {
  background: linear-gradient(135deg in oklch, rgba(59,130,246,0.15) 0%, rgba(139,92,246,0.1) 100%);
  border: 1px solid rgba(59,130,246,0.2);
  border-radius: var(--radius-xl);
  padding: 48px 32px;
  text-align: center;
}

.contact-cta-card h3 {
  font-size: 1.8rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 12px;
}

.contact-cta-card p {
  color: var(--text-muted);
  margin-bottom: 28px;
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
}

/* ══════════════════════════════════════════════════════════════════════════════
   FOOTER
══════════════════════════════════════════════════════════════════════════════ */
.footer {
  background: var(--bg);
  border-top: 1px solid var(--border);
  padding: 32px 24px;
}

.footer-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}

.footer-copy {
  font-size: 0.8rem;
  color: var(--text-subtle);
}

.footer-copy span {
  color: var(--text-muted);
}

.footer-links {
  display: flex;
  gap: 20px;
}

.footer-link {
  font-size: 0.8rem;
  color: var(--text-subtle);
  text-decoration: none;
  transition: color 0.2s ease;
}

.footer-link:hover {
  color: var(--accent);
}

/* ══════════════════════════════════════════════════════════════════════════════
   BACK TO TOP
══════════════════════════════════════════════════════════════════════════════ */
#back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 44px;
  height: 44px;
  background: var(--accent);
  color: white;
  border: none;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 900;
  box-shadow: 0 4px 16px rgba(59,130,246,0.4);
  font-size: 1.1rem;
}

/* ══════════════════════════════════════════════════════════════════════════════
   INTERACTIVE DEVELOPER CLI TERMINAL
══════════════════════════════════════════════════════════════════════════════ */
#terminal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(4, 7, 16, 0.78);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.25s ease, visibility 0.25s ease;
  visibility: hidden;
}

#terminal-overlay:has(#terminal-easter-egg.visible),
#terminal-overlay.visible {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

#terminal-easter-egg {
  background: rgba(10, 14, 26, 0.95);
  border: 1px solid rgba(56, 189, 248, 0.35);
  border-radius: var(--radius-lg);
  padding: 0;
  width: 100%;
  max-width: 680px;
  height: 520px;
  max-height: 85vh;
  box-shadow: 0 0 60px rgba(56, 189, 248, 0.18), 0 25px 50px -12px rgba(0, 0, 0, 0.7);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transform: scale(0.96) translateY(10px);
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.25s ease, width 0.3s ease, height 0.3s ease;
}

#terminal-easter-egg.visible {
  transform: scale(1) translateY(0);
}

#terminal-easter-egg.maximized {
  max-width: 95vw;
  height: 90vh;
}

.term-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.03);
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
  user-select: none;
}

.term-dots {
  display: flex;
  align-items: center;
  gap: 8px;
}

.term-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: none;
  cursor: pointer;
  padding: 0;
  transition: opacity 0.15s ease, transform 0.15s ease;
}
.term-dot:hover {
  transform: scale(1.15);
}
.term-dot.red    { background: #FF5F57; }
.term-dot.yellow { background: #FFBD2E; }
.term-dot.green  { background: #28CA41; }

.term-title {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-subtle);
  flex: 1;
  text-align: center;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  letter-spacing: 0.02em;
}

.term-header-actions {
  display: flex;
  align-items: center;
}

.term-close-btn {
  background: transparent;
  border: none;
  color: var(--text-subtle);
  font-size: 1rem;
  cursor: pointer;
  padding: 2px 6px;
  line-height: 1;
  transition: color 0.15s ease, transform 0.15s ease;
}
.term-close-btn:hover {
  color: #fff;
  transform: scale(1.1);
}

.term-body {
  padding: 16px 20px;
  font-family: var(--font-mono);
  font-size: 0.84rem;
  line-height: 1.6;
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  display: flex;
  flex-direction: column;
  gap: 8px;
  background: radial-gradient(circle at top right, rgba(56, 189, 248, 0.03), transparent 40%),
              radial-gradient(circle at bottom left, rgba(168, 85, 247, 0.03), transparent 40%);
}

.term-body::-webkit-scrollbar {
  width: 6px;
}
.term-body::-webkit-scrollbar-track {
  background: transparent;
}
.term-body::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.12);
  border-radius: 4px;
}
.term-body::-webkit-scrollbar-thumb:hover {
  background: rgba(56, 189, 248, 0.4);
}

.term-output {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.term-output-block {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.84rem;
  white-space: pre-wrap;
  word-break: break-word;
  color: #cbd5e1;
  line-height: 1.55;
}

.term-brand {
  color: #38bdf8;
  font-weight: 600;
}
.term-muted {
  color: #94a3b8;
}
.term-highlight {
  color: #38bdf8;
  font-weight: 600;
}
.term-green {
  color: #10b981;
}
.term-cyan {
  color: #06b6d4;
}
.term-purple {
  color: #a855f7;
}
.term-red {
  color: #f43f5e;
}
.term-link {
  color: #38bdf8;
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color 0.15s ease;
}
.term-link:hover {
  color: #7dd3fc;
}

.term-line {
  display: block;
  word-break: break-word;
}
.term-line.prompt-line {
  color: #e2e8f0;
  margin-top: 4px;
}
.term-cmd-text {
  color: #f8fafc;
  font-weight: 600;
}
.term-line.output-dim {
  color: #64748b;
}
.term-line.error {
  color: #f87171;
}

.term-input-line {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 6px;
  position: relative;
}

.term-prompt {
  color: #22c55e;
  font-weight: 600;
  white-space: nowrap;
  font-family: var(--font-mono);
  font-size: 0.84rem;
}

.term-input-wrapper {
  flex: 1;
  position: relative;
  display: flex;
  align-items: center;
}

.term-input {
  width: 100%;
  background: transparent;
  border: none;
  outline: none;
  font-family: var(--font-mono);
  font-size: 0.84rem;
  color: #f8fafc;
  caret-color: #38bdf8;
  padding: 0;
  margin: 0;
}

.term-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 10px;
  padding-top: 8px;
  border-top: 1px dashed rgba(255, 255, 255, 0.08);
}

.term-chip {
  background: rgba(56, 189, 248, 0.08);
  border: 1px solid rgba(56, 189, 248, 0.2);
  color: #7dd3fc;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  padding: 3px 8px;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.15s ease;
}
.term-chip:hover {
  background: rgba(56, 189, 248, 0.2);
  border-color: #38bdf8;
  color: #fff;
  transform: translateY(-1px);
}

/* Fullscreen Matrix Canvas Overlay */
#matrix-canvas {
  position: fixed;
  inset: 0;
  z-index: 3000;
  background: #000;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.3s ease;
}
#matrix-canvas.active {
  opacity: 1;
  pointer-events: auto;
  cursor: pointer;
}

/* Glitch animation during reboot */
@keyframes glitchTerminal {
  0% { transform: translate(0); filter: hue-rotate(0deg); }
  20% { transform: translate(-3px, 3px); filter: hue-rotate(90deg); }
  40% { transform: translate(3px, -2px); filter: hue-rotate(180deg); }
  60% { transform: translate(-2px, -3px); filter: hue-rotate(270deg); }
  80% { transform: translate(2px, 2px); filter: hue-rotate(360deg); }
  100% { transform: translate(0); filter: hue-rotate(0deg); }
}

#terminal-easter-egg.glitch-active {
  animation: glitchTerminal 0.3s infinite ease-in-out;
}

/* ══════════════════════════════════════════════════════════════════════════════
   SECTION DIVIDERS
══════════════════════════════════════════════════════════════════════════════ */
.section-divider {
  height: 1px;
  background: linear-gradient(to right, transparent, var(--border), transparent);
  margin: 0 auto;
  max-width: var(--container-max);
}