/* ═══════════════════════════════════════════════════════
   DON.DEV — Portfolio Stylesheet
   ═══════════════════════════════════════════════════════ */

/* ─── Design Tokens ─── */
:root {
  --bg: #0a0a0b;
  --bg-elevated: #111113;
  --bg-card: #17171a;
  --text-primary: #f0ece4;
  --text-secondary: #8a8690;
  --text-muted: #5a5660;
  --accent: #c9f26b;
  --accent-dim: #a8cc54;
  --accent-glow: rgba(201, 242, 107, 0.12);
  --accent-hover: #d8ff7a;
  --blue: #6bb5f2;
  --coral: #f27b6b;
  --radius: 16px;
  --radius-sm: 10px;
  --font-display: 'Playfair Display', Georgia, serif;
  --font-body: 'DM Sans', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --nav-height: 72px;
}


/* ─── Reset ─── */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: var(--nav-height); }

body {
  background: var(--bg);
  color: var(--text-primary);
  font-family: var(--font-body);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

/* Visible keyboard focus */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

/* Respect users who prefer reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation: none !important;
    transition: none !important;
  }
  html { scroll-behavior: auto; }
}
img { max-width: 100%; display: block; }
a { color: inherit; }
ul { list-style: none; }


/* ─── Noise Texture Overlay ─── */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  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='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.04'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 9999;
}


/* ─── Scrollbar ─── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--text-muted); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-secondary); }


/* ─── Layout ─── */
.container { max-width: 1200px; margin: 0 auto; width: 100%; }
.container.narrow { max-width: 800px; }
.center { text-align: center; }


/* ─── Section Defaults ─── */
section { padding: 120px 48px; position: relative; }

.section-label {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent);
  letter-spacing: 3px;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(32px, 4vw, 56px);
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: 48px;
  letter-spacing: -1px;
}
.section-title em {
  font-style: italic;
  color: var(--accent);
}

.accent { color: var(--accent); }
.accent-dot { color: var(--accent); }


/* ═══════════════ Navigation ═══════════════ */
nav {
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 100;
  height: var(--nav-height);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  background: rgba(10,10,11,0.7);
  border-bottom: 1px solid rgba(255,255,255,0.04);
  transition: background 0.3s ease;
}
nav.scrolled { background: rgba(10,10,11,0.92); }

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 48px;
  height: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-logo {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 500;
  color: var(--text-primary);
  letter-spacing: 2px;
  text-decoration: none;
  text-transform: uppercase;
}

.nav-links { display: flex; gap: 36px; }
.nav-links a {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  letter-spacing: 1px;
  text-transform: uppercase;
  transition: color 0.3s;
  position: relative;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0;
  width: 0; height: 1.5px;
  background: var(--accent);
  transition: width 0.3s ease;
}
.nav-links a:hover { color: var(--text-primary); }
.nav-links a:hover::after { width: 100%; }

.nav-toggle {
  display: none;
  position: relative;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  z-index: 110;
}
.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  margin: 5px 0;
  border-radius: 2px;
  transition: all 0.3s;
}


/* ═══════════════ Hero ═══════════════ */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
  overflow: hidden;
  padding: 140px 48px 80px;
}

.hero-content {
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
  position: relative;
  z-index: 1;
}

/* Floating orbs */
.hero-bg-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.3;
  pointer-events: none;
}
.orb-one {
  width: 500px; height: 500px;
  background: radial-gradient(circle, var(--accent) 0%, transparent 70%);
  top: -100px; right: -100px;
  animation: orbFloat 12s ease-in-out infinite;
}
.orb-two {
  width: 350px; height: 350px;
  background: radial-gradient(circle, var(--blue) 0%, transparent 70%);
  bottom: 50px; left: -50px;
  animation: orbFloat 16s ease-in-out infinite reverse;
}
.orb-three {
  width: 250px; height: 250px;
  background: radial-gradient(circle, var(--coral) 0%, transparent 70%);
  top: 40%; left: 55%;
  opacity: 0.15;
  animation: orbFloat 20s ease-in-out infinite 3s;
}

@keyframes orbFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(30px, -20px) scale(1.05); }
  66% { transform: translate(-15px, 15px) scale(0.95); }
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--accent);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 28px;
  opacity: 0;
  animation: fadeUp 0.8s var(--ease-out) forwards 0.3s;
}
.tag-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--accent);
  animation: pulse 2s ease infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(201,242,107,0.4); }
  50% { opacity: 0.7; box-shadow: 0 0 0 8px rgba(201,242,107,0); }
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(48px, 7.5vw, 108px);
  font-weight: 900;
  line-height: 1.0;
  letter-spacing: -2px;
  max-width: 900px;
  opacity: 0;
  animation: fadeUp 0.8s var(--ease-out) forwards 0.5s;
}
.hero h1 em {
  font-style: italic;
  color: var(--accent);
}

.hero-sub {
  font-size: 18px;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 540px;
  margin-top: 32px;
  font-weight: 300;
  opacity: 0;
  animation: fadeUp 0.8s var(--ease-out) forwards 0.7s;
}

.hero-cta {
  display: flex;
  gap: 16px;
  margin-top: 48px;
  opacity: 0;
  animation: fadeUp 0.8s var(--ease-out) forwards 0.9s;
}

/* CTA Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 60px;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.35s var(--ease-out);
  cursor: pointer;
  border: none;
}
.btn-primary {
  background: var(--accent);
  color: var(--bg);
}
.btn-primary:hover {
  background: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(201,242,107,0.25);
}
.btn-primary svg { transition: transform 0.3s; }
.btn-primary:hover svg { transform: translateY(2px); }

.btn-ghost {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid rgba(255,255,255,0.15);
}
.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
}

/* Scroll indicator */
.hero-scroll {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  opacity: 0;
  animation: fadeUp 0.8s var(--ease-out) forwards 1.2s;
}
.hero-scroll span {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-muted);
  letter-spacing: 2px;
  text-transform: uppercase;
}
.scroll-line {
  width: 1px; height: 40px;
  background: linear-gradient(to bottom, var(--text-muted), transparent);
  animation: scrollPulse 2s ease infinite;
}
@keyframes scrollPulse {
  0%, 100% { opacity: 0.3; transform: scaleY(1); }
  50% { opacity: 1; transform: scaleY(1.2); }
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}


/* ═══════════════ About ═══════════════ */
.about {
  background: var(--bg-elevated);
  border-top: 1px solid rgba(255,255,255,0.04);
  border-bottom: 1px solid rgba(255,255,255,0.04);
}

.about-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 64px;
  align-items: center;
}

.about-portrait {
  display: flex;
  justify-content: center;
}
.portrait-frame {
  position: relative;
  width: 100%;
  max-width: 320px;
  aspect-ratio: 4 / 5;
  border-radius: 20px;
  background: linear-gradient(160deg, #14171c 0%, #1a1f26 50%, #0f1216 100%);
  border: 1px solid rgba(255,255,255,0.06);
  overflow: hidden;
  box-shadow: 0 30px 80px rgba(0,0,0,0.5);
  transition: transform 0.5s var(--ease-out), box-shadow 0.5s var(--ease-out), border-color 0.5s;
  will-change: transform;
}
.portrait-frame:hover {
  transform: translateY(-6px);
  border-color: rgba(201,242,107,0.18);
  box-shadow:
    0 40px 100px rgba(0,0,0,0.55),
    0 0 50px rgba(201,242,107,0.12);
}
.portrait-glow {
  position: absolute;
  width: 70%;
  aspect-ratio: 1;
  bottom: -20%;
  left: 50%;
  transform: translateX(-50%) scale(0.9);
  background: radial-gradient(circle, rgba(201,242,107,0.35) 0%, transparent 70%);
  filter: blur(40px);
  pointer-events: none;
  z-index: 0;
  opacity: 0;
  transition: opacity 1.4s ease;
}
.about-portrait.visible .portrait-glow {
  opacity: 1;
  animation: glowPulse 5s ease-in-out infinite 1s;
}
@keyframes glowPulse {
  0%, 100% { transform: translateX(-50%) scale(0.9); opacity: 0.85; }
  50%      { transform: translateX(-50%) scale(1.08); opacity: 1; }
}

.portrait-grid-lines {
  position: absolute;
  inset: 0;
  background:
    conic-gradient(from 200deg at 50% 60%,
      rgba(201,242,107,0.18) 0deg,
      transparent 80deg,
      rgba(107,181,242,0.14) 180deg,
      transparent 260deg,
      rgba(201,242,107,0.18) 360deg);
  mask-image: radial-gradient(circle at 50% 60%, transparent 32%, black 48%, transparent 82%);
  -webkit-mask-image: radial-gradient(circle at 50% 60%, transparent 32%, black 48%, transparent 82%);
  filter: blur(2px);
  pointer-events: none;
  z-index: 0;
  animation: ringRotate 28s linear infinite;
}
@keyframes ringRotate {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}
.portrait-img {
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translate3d(-50%, 0, 0);
  height: 100%;
  width: auto;
  object-fit: contain;
  object-position: bottom center;
  z-index: 1;
  image-rendering: -webkit-optimize-contrast;
  backface-visibility: hidden;
  filter: saturate(0.95) contrast(1.02);
  transition: transform 0.25s var(--ease-out);
  will-change: transform;
}

.about-text p {
  font-size: 17px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 24px;
  font-weight: 300;
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 64px;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid rgba(255,255,255,0.05);
  border-radius: var(--radius);
  padding: 28px 24px;
  transition: all 0.4s var(--ease-out);
  position: relative;
  overflow: hidden;
}
.stat-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--blue));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}
.stat-card:hover { transform: translateY(-4px); border-color: rgba(255,255,255,0.1); }
.stat-card:hover::before { transform: scaleX(1); }

.stat-number {
  font-family: var(--font-display);
  font-size: 32px;
  font-weight: 900;
  color: var(--text-primary);
  margin-bottom: 4px;
}
.stat-label {
  font-size: 12px;
  color: var(--text-muted);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 1px;
}


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

.skill-card {
  background: var(--bg-elevated);
  border: 1px solid rgba(255,255,255,0.05);
  border-radius: var(--radius);
  padding: 36px;
  transition: all 0.4s var(--ease-out);
  position: relative;
  overflow: hidden;
}
.skill-card:hover {
  transform: translateY(-6px);
  border-color: rgba(201,242,107,0.2);
  box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}

.skill-icon {
  width: 48px; height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: white;
}
.icon-swift { background: linear-gradient(135deg, #f05138, #f77d6a); }
.icon-vapor { background: linear-gradient(135deg, #6b8af2, #9bb5f7); }
.icon-web   { background: linear-gradient(135deg, #47a867, #7dd99b); }
.icon-ops   { background: linear-gradient(135deg, var(--coral), #f7a89b); }
.icon-data  { background: linear-gradient(135deg, #f59e0b, #fbbf24); }
.icon-flutter { background: linear-gradient(135deg, #027DFD, #54c5f8); }

.skill-card h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
}
.skill-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  font-weight: 300;
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 20px;
}
.skill-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 5px 12px;
  background: rgba(201,242,107,0.08);
  color: var(--accent-dim);
  border-radius: 20px;
  border: 1px solid rgba(201,242,107,0.12);
}


/* ═══════════════ Projects ═══════════════ */
.projects {
  background: var(--bg-elevated);
  border-top: 1px solid rgba(255,255,255,0.04);
  border-bottom: 1px solid rgba(255,255,255,0.04);
}

.project-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  background: var(--bg-card);
  border: 1px solid rgba(255,255,255,0.05);
  border-radius: 20px;
  padding: 48px;
  margin-bottom: 32px;
  align-items: center;
  transition: all 0.4s ease;
}
.project-card:hover {
  border-color: rgba(201,242,107,0.12);
  box-shadow: 0 20px 60px rgba(0,0,0,0.2);
}
.project-card.reverse { direction: rtl; }
.project-card.reverse > * { direction: ltr; }

.project-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 5px 14px;
  border-radius: 20px;
  margin-bottom: 16px;
  font-weight: 500;
  letter-spacing: 1px;
  text-transform: uppercase;
}
.badge-featured { background: rgba(201,242,107,0.12); color: var(--accent); border: 1px solid rgba(201,242,107,0.2); }
.badge-web     { background: rgba(107,181,242,0.12); color: var(--blue); border: 1px solid rgba(107,181,242,0.2); }
.badge-tool    { background: rgba(242,123,107,0.12); color: var(--coral); border: 1px solid rgba(242,123,107,0.2); }
.badge-mobile  { background: rgba(167,139,250,0.12); color: #a78bfa; border: 1px solid rgba(167,139,250,0.2); }

.project-info h3 {
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 16px;
}
.project-info p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
  font-weight: 300;
  margin-bottom: 20px;
}

.project-tech { display: flex; flex-wrap: wrap; gap: 8px; }
.project-tech span {
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 4px 12px;
  background: rgba(255,255,255,0.05);
  border-radius: 20px;
  color: var(--text-secondary);
  border: 1px solid rgba(255,255,255,0.06);
}

/* Project Mockups */
.project-visual {
  aspect-ratio: 4/3;
  border-radius: var(--radius);
  overflow: hidden;
}
.project-mockup {
  width: 100%; height: 100%;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}
.mockup-sw { background: linear-gradient(135deg, #1a1a2e, #16213e, #0f3460); }
.mockup-ds { background: linear-gradient(135deg, #1a2332, #1c3a4f, #245a6e); }
.mockup-rs { background: linear-gradient(135deg, #2a1a1a, #3d2222, #4f2e2e); }
.mockup-kt { background: linear-gradient(135deg, #1a1a2e, #2d1a3e, #3e1a4f); }
.mockup-tm { background: linear-gradient(135deg, #1a2e1a, #1e3a2a, #1a3e30); }
.mockup-im { background: linear-gradient(135deg, #2a2418, #3a3220, #4a3d25); }

/* Project external link */
.project-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 16px;
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
  text-decoration: none;
  transition: all 0.3s ease;
}
.project-link:hover {
  color: var(--accent-hover);
  gap: 10px;
}

/* Muted note for projects without a public link */
.project-note {
  display: inline-flex;
  margin-top: 16px;
  font-size: 14px;
  font-style: italic;
  color: var(--text-muted);
}

/* Quiet secondary link (e.g. copyright registration) under the main CTA */
.project-note-link {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 10px;
  font-size: 13px;
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.3s ease;
}
.project-note-link:hover { color: var(--accent); }

/* Compact project grid (secondary projects under the flagship card) */
.project-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.project-mini {
  background: var(--bg-card);
  border: 1px solid rgba(255,255,255,0.05);
  border-radius: 20px;
  padding: 32px;
  display: flex;
  flex-direction: column;
  transition: all 0.4s ease;
}
.project-mini:hover {
  border-color: rgba(201,242,107,0.12);
  box-shadow: 0 20px 60px rgba(0,0,0,0.2);
}
.project-mini h3 {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 12px;
}
.project-mini p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  font-weight: 300;
  margin-bottom: 16px;
  flex: 1;
}

/* TowMi Map Mockup */
.phone-map {
  aspect-ratio: 3/4;
  background: rgba(30,58,42,0.5);
  border-radius: 10px;
  position: relative;
  overflow: hidden;
}
.map-roads {
  position: absolute;
  inset: 0;
}
.road {
  position: absolute;
  background: rgba(255,255,255,0.06);
}
.road-h {
  left: 0; right: 0;
  height: 2px;
}
.road-v {
  top: 0; bottom: 0;
  width: 2px;
}
.map-pin {
  position: absolute;
  z-index: 2;
  animation: pinBounce 2s ease infinite;
}
.pin-1 { top: 22%; left: 35%; animation-delay: 0s; }
.pin-2 { top: 50%; left: 70%; animation-delay: 0.4s; }
.pin-3 { top: 70%; left: 20%; animation-delay: 0.8s; }

@keyframes pinBounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-4px); }
}

.map-pulse {
  position: absolute;
  top: 45%; left: 48%;
  width: 16px; height: 16px;
  border-radius: 50%;
  background: rgba(107,181,242,0.3);
  animation: mapPulse 2s ease infinite;
}
@keyframes mapPulse {
  0% { transform: scale(1); opacity: 0.6; }
  100% { transform: scale(3); opacity: 0; }
}

.phone-bottom-bar {
  display: flex;
  justify-content: center;
  gap: 16px;
  padding: 10px 0 4px;
}
.bottom-bar-item {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: rgba(255,255,255,0.12);
}
.bottom-bar-item.active {
  background: var(--accent);
  opacity: 0.6;
}

.mockup-grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 40px 40px;
}

/* Mockup: Desktop Window */
.mockup-window {
  width: 80%; max-width: 360px;
  background: rgba(0,0,0,0.5);
  border-radius: 10px;
  border: 1px solid rgba(255,255,255,0.08);
  overflow: hidden;
  z-index: 1;
  box-shadow: 0 20px 60px rgba(0,0,0,0.4);
}
.mockup-window.small { max-width: 260px; }
.window-dots {
  display: flex;
  gap: 6px;
  padding: 12px 16px;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.window-dots i {
  width: 10px; height: 10px;
  border-radius: 50%;
  font-style: normal;
}
.window-dots i:nth-child(1) { background: #ff5f57; }
.window-dots i:nth-child(2) { background: #febc2e; }
.window-dots i:nth-child(3) { background: #28c840; }

.window-body { padding: 16px; }

/* Desktop CRM mockup */
.mock-sidebar {
  display: inline-flex;
  flex-direction: column;
  gap: 6px;
  width: 24%;
  vertical-align: top;
}
.mock-sidebar-item {
  height: 8px;
  border-radius: 4px;
  background: rgba(255,255,255,0.06);
}
.mock-sidebar-item.active {
  background: var(--accent);
  opacity: 0.5;
}
.mock-main {
  display: inline-block;
  width: 72%;
  vertical-align: top;
  padding-left: 12px;
}
.mock-header {
  height: 10px;
  width: 60%;
  background: rgba(255,255,255,0.1);
  border-radius: 4px;
  margin-bottom: 12px;
}
.mock-cards { display: flex; gap: 6px; margin-bottom: 12px; }
.mock-card {
  flex: 1;
  height: 32px;
  background: rgba(255,255,255,0.04);
  border-radius: 6px;
  border: 1px solid rgba(255,255,255,0.05);
}
.mock-table { display: flex; flex-direction: column; gap: 4px; }
.mock-row {
  height: 6px;
  background: rgba(255,255,255,0.04);
  border-radius: 3px;
}
.mock-row:first-child { width: 100%; }
.mock-row:nth-child(2) { width: 85%; }
.mock-row:nth-child(3) { width: 70%; }

/* Phone mockup */
.mockup-phone {
  width: 160px;
  background: rgba(0,0,0,0.5);
  border-radius: 24px;
  border: 2px solid rgba(255,255,255,0.1);
  padding: 8px;
  z-index: 1;
  box-shadow: 0 20px 60px rgba(0,0,0,0.4);
}
.phone-notch {
  width: 60px; height: 6px;
  background: rgba(0,0,0,0.8);
  border-radius: 10px;
  margin: 6px auto 10px;
}
.phone-body { padding: 8px; }
.phone-viewfinder {
  aspect-ratio: 3/4;
  background: rgba(255,255,255,0.04);
  border-radius: 10px;
  position: relative;
  overflow: hidden;
}
.viewfinder-grid {
  position: absolute; inset: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: 1fr 1fr;
  gap: 1px;
}
.viewfinder-grid > div { border: 1px solid rgba(255,255,255,0.06); }
.viewfinder-circle {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 40px; height: 40px;
  border: 2px solid rgba(255,255,255,0.2);
  border-radius: 50%;
}
.phone-capture {
  width: 36px; height: 36px;
  border-radius: 50%;
  border: 3px solid rgba(255,255,255,0.2);
  margin: 12px auto 4px;
  position: relative;
}
.phone-capture::after {
  content: '';
  position: absolute;
  inset: 3px;
  border-radius: 50%;
  background: rgba(255,255,255,0.15);
}

/* Receipt mockup */
.mock-receipt {
  background: rgba(255,255,255,0.06);
  border-radius: 6px;
  padding: 14px;
  position: relative;
}
.receipt-line {
  height: 5px;
  border-radius: 3px;
  background: rgba(255,255,255,0.1);
  margin-bottom: 6px;
}
.receipt-line.long { width: 100%; }
.receipt-line.medium { width: 70%; }
.receipt-line.short { width: 50%; }
.receipt-divider {
  height: 1px;
  background: rgba(255,255,255,0.06);
  margin: 8px 0;
}
.mock-scan-line {
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--accent);
  opacity: 0.6;
  animation: scanLine 2.5s ease-in-out infinite;
}
@keyframes scanLine {
  0%, 100% { top: 10%; }
  50% { top: 90%; }
}

/* Karaoke mockup */
.mockup-karaoke {
  z-index: 1;
  text-align: center;
  padding: 20px;
}
.karaoke-bars {
  display: flex;
  gap: 6px;
  justify-content: center;
  align-items: flex-end;
  height: 80px;
  margin-bottom: 24px;
}
.bar {
  width: 12px;
  height: var(--h);
  background: linear-gradient(to top, var(--accent), var(--blue));
  border-radius: 4px 4px 0 0;
  opacity: 0.6;
  animation: barPulse 1.2s ease-in-out infinite alternate;
}
.bar:nth-child(2) { animation-delay: 0.1s; }
.bar:nth-child(3) { animation-delay: 0.2s; }
.bar:nth-child(4) { animation-delay: 0.3s; }
.bar:nth-child(5) { animation-delay: 0.15s; }
.bar:nth-child(6) { animation-delay: 0.25s; }
.bar:nth-child(7) { animation-delay: 0.05s; }
.bar:nth-child(8) { animation-delay: 0.35s; }
@keyframes barPulse {
  0% { transform: scaleY(0.6); opacity: 0.4; }
  100% { transform: scaleY(1); opacity: 0.8; }
}

.karaoke-lyric { margin-top: 8px; }
.lyric-line {
  height: 6px;
  width: 180px;
  margin: 0 auto;
  background: rgba(255,255,255,0.1);
  border-radius: 3px;
  position: relative;
  overflow: hidden;
}
.lyric-highlight {
  position: absolute;
  top: 0; left: 0;
  height: 6px;
  width: 0;
  background: var(--accent);
  border-radius: 3px;
  opacity: 0.7;
  animation: lyricFill 3s ease infinite;
}
@keyframes lyricFill {
  0% { width: 0; }
  80% { width: 180px; }
  100% { width: 180px; opacity: 0; }
}


/* ═══════════════ Experience Timeline ═══════════════ */
.timeline { position: relative; }

.timeline-line {
  position: absolute;
  left: 20px;
  top: 0; bottom: 0;
  width: 1px;
  background: linear-gradient(to bottom, var(--accent), var(--blue), transparent);
}

.timeline-item {
  padding-left: 64px;
  margin-bottom: 56px;
  position: relative;
}

.timeline-dot {
  position: absolute;
  left: 13px; top: 6px;
  width: 15px; height: 15px;
  border-radius: 50%;
  background: var(--bg);
  border: 2px solid var(--accent);
  z-index: 1;
}
.timeline-dot.active {
  background: var(--accent);
  box-shadow: 0 0 16px rgba(201,242,107,0.4);
}

.timeline-date {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent-dim);
  letter-spacing: 1.5px;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.timeline-item h3 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 4px;
}
.timeline-item h4 {
  font-size: 15px;
  color: var(--text-secondary);
  font-weight: 400;
  margin-bottom: 12px;
}
.timeline-item p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
  font-weight: 300;
}


/* ═══════════════ Contact ═══════════════ */
.contact-sub {
  font-size: 17px;
  color: var(--text-secondary);
  line-height: 1.7;
  font-weight: 300;
  margin-bottom: 48px;
}

.contact-links {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.contact-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 16px 28px;
  background: var(--bg-elevated);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 60px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-primary);
  text-decoration: none;
  transition: all 0.35s ease;
}
.contact-link:hover {
  border-color: var(--accent);
  background: var(--accent-glow);
  color: var(--accent);
  transform: translateY(-3px);
  box-shadow: 0 12px 40px rgba(201,242,107,0.1);
}


/* ═══════════════ Footer ═══════════════ */
footer {
  padding: 40px 48px;
  text-align: center;
  border-top: 1px solid rgba(255,255,255,0.04);
}
footer p {
  font-size: 13px;
  color: var(--text-muted);
  font-weight: 300;
}


/* ═══════════════ Scroll Reveal ═══════════════ */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.7s var(--ease-out);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}


/* ═══════════════ Responsive ═══════════════ */
@media (max-width: 968px) {
  section { padding: 80px 24px; }
  .nav-inner { padding: 0 24px; }
  .hero { padding: 120px 24px 80px; }
  .about-grid { grid-template-columns: 1fr; gap: 48px; }
  .about-stats { grid-template-columns: 1fr 1fr; margin-top: 48px; }
  .skills-grid { grid-template-columns: 1fr 1fr; }
  .project-grid { grid-template-columns: 1fr 1fr; }
  .project-card {
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 28px;
  }
  .project-card.reverse { direction: ltr; }
  .hero-cta { flex-direction: column; align-items: flex-start; }
  .contact-links { flex-direction: column; align-items: center; }

  .nav-links {
    display: none;
    position: absolute;
    top: 0; left: 0;
    width: 100%;
    height: 100vh;
    height: 100dvh;
    background: rgba(10,10,11,0.97);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 20px;
    padding: var(--nav-height) 24px 24px;
    z-index: 105;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
  }
  .nav-links.open { display: flex; }
  .nav-links a { font-size: 18px; }
  .nav-toggle { display: block; }
  .nav-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
  .nav-toggle.active span:nth-child(2) { opacity: 0; }
  .nav-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }
}

@media (max-width: 640px) {
  .skills-grid { grid-template-columns: 1fr; }
  .project-grid { grid-template-columns: 1fr; }
  .project-mini { padding: 28px; }
  .skill-card { padding: 28px; }
  .project-info h3 { font-size: 24px; }
  .timeline-line { left: 14px; }
  .timeline-item { padding-left: 44px; }
  .timeline-dot { left: 7px; }
}

@media (max-width: 480px) {
  section { padding: 64px 20px; }
  .hero { padding: 104px 20px 64px; }
  .hero h1 { font-size: 36px; letter-spacing: -1px; }
  .section-title { font-size: 28px; }
  .about-stats { grid-template-columns: 1fr 1fr; gap: 12px; }
  .stat-card { padding: 20px 16px; }
  .stat-number { font-size: 24px; }
  .project-card { padding: 22px; }
  .project-info h3 { font-size: 22px; }
}

/* ═══════════════ Portfolio AI Chatbot ═══════════════ */

.ai-chat {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 9999;
  font-family: var(--font-body);
}

.ai-chat-toggle {
  display: flex;
  align-items: center;
  gap: 10px;

  padding: 14px 18px;

  border: 1px solid var(--accent);
  border-radius: 999px;

  background: var(--bg-card);
  color: var(--text-primary);

  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;

  cursor: pointer;

  box-shadow:
    0 10px 30px rgba(0, 0, 0, 0.25);

  transition:
    transform 0.2s ease,
    background 0.2s ease;
}

.ai-chat-toggle span {
  color: var(--accent);
}

.ai-chat-toggle:hover {
  transform: translateY(-2px);
  background: var(--bg-elevated);
}


.ai-chat-panel {
  position: absolute;

  right: 0;
  bottom: 70px;

  width: 380px;
  max-width: calc(100vw - 32px);

  height: 500px;
  max-height: calc(100vh - 120px);

  display: flex;
  flex-direction: column;

  background: var(--bg-card);

  border: 1px solid rgba(255, 255, 255, 0.1);

  border-radius: var(--radius);

  overflow: hidden;

  box-shadow:
    0 20px 60px rgba(0, 0, 0, 0.4);

  opacity: 0;
  visibility: hidden;

  transform:
    translateY(15px)
    scale(0.98);

  pointer-events: none;

  transition:
    opacity 0.2s ease,
    transform 0.2s ease,
    visibility 0.2s ease;
}


.ai-chat.open .ai-chat-panel {
  opacity: 1;

  visibility: visible;

  transform:
    translateY(0)
    scale(1);

  pointer-events: auto;
}


.ai-chat.open .ai-chat-toggle {
  display: none;
}


/* Header */

.ai-chat-header {
  display: flex;

  align-items: center;
  justify-content: space-between;

  padding: 18px 20px;

  border-bottom:
    1px solid rgba(255, 255, 255, 0.08);
}


.ai-chat-title {
  font-family: var(--font-body);

  font-size: 16px;
  font-weight: 600;

  color: var(--text-primary);
}


.ai-chat-status {
  display: flex;
  align-items: center;
  gap: 6px;

  margin-top: 4px;

  font-family: var(--font-mono);

  font-size: 10px;

  color: var(--text-secondary);
}


.ai-chat-status span {
  width: 6px;
  height: 6px;

  border-radius: 50%;

  background: var(--accent);
}


.ai-chat-close {
  width: 34px;
  height: 34px;

  border: none;
  border-radius: 50%;

  background: transparent;

  color: var(--text-secondary);

  font-size: 24px;
  line-height: 1;

  cursor: pointer;

  transition: background 0.2s ease;
}


.ai-chat-close:hover {
  background: rgba(255, 255, 255, 0.08);

  color: var(--text-primary);
}


/* Messages */

.ai-chat-messages {
  flex: 1;

  overflow-y: auto;

  padding: 20px;

  display: flex;
  flex-direction: column;

  gap: 16px;
}


.ai-message {
  display: flex;
  flex-direction: column;

  max-width: 85%;
}


.ai-bot-message {
  align-self: flex-start;
}


.ai-user-message {
  align-self: flex-end;
}


.ai-message-label {
  margin-bottom: 5px;

  font-family: var(--font-mono);

  font-size: 10px;

  color: var(--text-secondary);
}


.ai-message-bubble {
  padding: 12px 14px;

  border-radius: 12px;

  font-size: 14px;
  line-height: 1.6;

  white-space: pre-wrap;

  word-break: break-word;
}


.ai-bot-message .ai-message-bubble {
  background: var(--bg-elevated);

  color: var(--text-primary);

  border:
    1px solid rgba(255, 255, 255, 0.06);
}


.ai-user-message .ai-message-bubble {
  background: var(--accent);

  color: #111;
}


/* Form */

.ai-chat-form {
  display: flex;

  align-items: flex-end;

  gap: 10px;

  padding: 15px;

  border-top:
    1px solid rgba(255, 255, 255, 0.08);
}


.ai-chat-form textarea {
  flex: 1;

  min-height: 44px;
  max-height: 100px;

  resize: none;

  padding: 12px;

  border-radius: 10px;

  border:
    1px solid rgba(255, 255, 255, 0.1);

  background: var(--bg-elevated);

  color: var(--text-primary);

  font-family: var(--font-body);

  outline: none;
}


.ai-chat-form textarea:focus {
  border-color: var(--accent);
}


.ai-chat-send {
  height: 44px;

  padding: 0 15px;

  border: none;
  border-radius: 10px;

  background: var(--accent);

  color: #111;

  font-family: var(--font-body);

  font-weight: 600;

  cursor: pointer;

  transition: transform 0.2s ease;
}


.ai-chat-send:hover {
  transform: translateY(-1px);
}


.ai-chat-send:disabled {
  opacity: 0.6;

  cursor: not-allowed;
}


/* Thinking */

.ai-thinking {
  display: flex;

  gap: 5px;

  align-items: center;

  padding: 12px 14px;
}


.ai-thinking span {
  width: 6px;
  height: 6px;

  border-radius: 50%;

  background: var(--accent);

  animation: aiPulse 1.2s infinite;
}


.ai-thinking span:nth-child(2) {
  animation-delay: 0.15s;
}


.ai-thinking span:nth-child(3) {
  animation-delay: 0.3s;
}


@keyframes aiPulse {

  0%,
  60%,
  100% {
    transform: translateY(0);
    opacity: 0.4;
  }

  30% {
    transform: translateY(-5px);
    opacity: 1;
  }

}


/* Mobile */

@media (max-width: 600px) {

  .ai-chat {
    right: 16px;
    bottom: 16px;
  }


  .ai-chat-panel {
    position: fixed;

    right: 16px;
    left: 16px;

    bottom: 16px;

    width: auto;

    height: min(560px, calc(100vh - 32px));

    max-height: none;
  }


  .ai-chat-toggle {
    padding: 13px 16px;

    font-size: 13px;
  }

}