/* ==========================================================================
   AHMETARIFDENIZOLGUN.COM - BIOGRAPHY PORTAL
   Design System, Glassmorphism, Micro-Animations & Responsive Styles
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. CSS Custom Properties / Design Tokens
   -------------------------------------------------------------------------- */
:root {
  /* Dark Theme (Default) */
  --bg-primary: #080c14;
  --bg-secondary: #0f1523;
  --bg-tertiary: #172033;
  --bg-glass: rgba(15, 22, 36, 0.72);
  --bg-glass-hover: rgba(23, 33, 53, 0.88);
  --bg-glass-card: rgba(18, 26, 43, 0.65);

  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-highlight: rgba(0, 242, 254, 0.35);
  --border-glow: rgba(99, 102, 241, 0.4);

  --text-main: #f1f5f9;
  --text-muted: #94a3b8;
  --text-faint: #64748b;
  --text-inverse: #080c14;

  /* Accent Gradients & Colors */
  --accent-cyan: #00f2fe;
  --accent-blue: #4facfe;
  --accent-indigo: #6366f1;
  --accent-purple: #a855f7;
  --accent-emerald: #10b981;
  --accent-amber: #f59e0b;

  --gradient-primary: linear-gradient(135deg, #00f2fe 0%, #4facfe 50%, #6366f1 100%);
  --gradient-card: linear-gradient(145deg, rgba(255, 255, 255, 0.04) 0%, rgba(255, 255, 255, 0.01) 100%);
  --gradient-glow: radial-gradient(circle, rgba(0, 242, 254, 0.15) 0%, rgba(99, 102, 241, 0.05) 50%, transparent 70%);

  /* Shadows & Elevations */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.25);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 30px rgba(0, 242, 254, 0.2);

  /* Typography */
  --font-family-base: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-family-mono: 'JetBrains Mono', monospace;

  /* Layout */
  --header-height: 76px;
  --max-width-container: 1180px;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  --transition-smooth: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Light Theme Overrides */
html.light-theme {
  --bg-primary: #f8fafc;
  --bg-secondary: #ffffff;
  --bg-tertiary: #f1f5f9;
  --bg-glass: rgba(255, 255, 255, 0.85);
  --bg-glass-hover: rgba(255, 255, 255, 0.95);
  --bg-glass-card: rgba(255, 255, 255, 0.75);

  --border-subtle: rgba(15, 23, 42, 0.08);
  --border-highlight: rgba(0, 150, 255, 0.4);
  --border-glow: rgba(99, 102, 241, 0.3);

  --text-main: #0f172a;
  --text-muted: #475569;
  --text-faint: #94a3b8;
  --text-inverse: #ffffff;

  --gradient-primary: linear-gradient(135deg, #0284c7 0%, #2563eb 50%, #4f46e5 100%);
  --gradient-glow: radial-gradient(circle, rgba(14, 165, 233, 0.12) 0%, rgba(99, 102, 241, 0.04) 50%, transparent 70%);

  --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 8px 24px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 16px 40px rgba(15, 23, 42, 0.12);
  --shadow-glow: 0 0 25px rgba(2, 132, 199, 0.15);
}

/* --------------------------------------------------------------------------
   2. Reset & Core Base
   -------------------------------------------------------------------------- */
*, *::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-family-base);
  background-color: var(--bg-primary);
  color: var(--text-main);
  line-height: 1.65;
  overflow-x: hidden;
  transition: background-color 0.3s ease, color 0.3s ease;
  position: relative;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition-smooth);
}

button, input, textarea {
  font-family: inherit;
  color: inherit;
  outline: none;
}

/* Skip link for accessibility */
.skip-link {
  position: absolute;
  top: -100px;
  left: 20px;
  background: var(--accent-indigo);
  color: #fff;
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  z-index: 9999;
  font-weight: 600;
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 20px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

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

/* --------------------------------------------------------------------------
   3. Scroll Progress Indicator
   -------------------------------------------------------------------------- */
.scroll-progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0%;
  background: var(--gradient-primary);
  z-index: 1000;
  box-shadow: 0 0 10px var(--accent-cyan);
  transition: width 0.05s linear;
}

/* --------------------------------------------------------------------------
   4. Site Header & Navigation
   -------------------------------------------------------------------------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: var(--bg-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
  z-index: 900;
  transition: var(--transition-smooth);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 800;
  font-size: 1.28rem;
  letter-spacing: -0.5px;
}

.logo-symbol {
  font-size: 1.3rem;
  filter: drop-shadow(0 0 8px rgba(0, 242, 254, 0.6));
}

.logo-text {
  color: var(--text-main);
}

.logo-accent {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.site-nav .nav-list {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}

.nav-link {
  font-size: 0.93rem;
  font-weight: 500;
  color: var(--text-muted);
  position: relative;
  padding: 6px 0;
}

.nav-link:hover,
.nav-link.active {
  color: var(--text-main);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
  transition: width 0.25s ease;
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.nav-cta {
  background: rgba(99, 102, 241, 0.15);
  border: 1px solid var(--border-glow);
  padding: 6px 14px !important;
  border-radius: var(--radius-full);
  color: var(--text-main) !important;
}

.nav-cta:hover {
  background: rgba(99, 102, 241, 0.28);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* AI Bot Badge in Header */
.ai-bot-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 10px;
  background: rgba(0, 242, 254, 0.1);
  border: 1px solid rgba(0, 242, 254, 0.3);
  border-radius: var(--radius-full);
  font-size: 0.78rem;
  font-weight: 600;
  font-family: var(--font-family-mono);
  color: var(--accent-cyan);
  transition: var(--transition-smooth);
}

.ai-bot-badge:hover {
  background: rgba(0, 242, 254, 0.2);
  transform: translateY(-1px);
  box-shadow: 0 0 12px rgba(0, 242, 254, 0.3);
}

.ai-dot {
  width: 7px;
  height: 7px;
  background-color: var(--accent-cyan);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--accent-cyan);
  animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
  0% { transform: scale(0.95); opacity: 0.7; }
  50% { transform: scale(1.3); opacity: 1; }
  100% { transform: scale(0.95); opacity: 0.7; }
}

/* Theme Toggle Button */
.theme-toggle-btn {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.theme-toggle-btn:hover {
  color: var(--text-main);
  border-color: var(--border-highlight);
  transform: translateY(-1px);
}

html.dark-theme .sun-icon { display: block; }
html.dark-theme .moon-icon { display: none; }
html.light-theme .sun-icon { display: none; }
html.light-theme .moon-icon { display: block; }

/* Mobile Menu Button */
.mobile-menu-btn {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-subtle);
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  cursor: pointer;
  padding: 9px;
}

.mobile-menu-btn .bar {
  width: 100%;
  height: 2px;
  background: var(--text-main);
  border-radius: 2px;
  transition: var(--transition-smooth);
}

/* --------------------------------------------------------------------------
   5. Buttons & Badges
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 600;
  font-size: 0.95rem;
  padding: 12px 24px;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition-smooth);
  border: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--gradient-primary);
  color: #040810;
  box-shadow: 0 4px 18px rgba(0, 242, 254, 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(0, 242, 254, 0.5);
}

.btn-secondary {
  background: var(--bg-tertiary);
  color: var(--text-main);
  border: 1px solid var(--border-subtle);
}

.btn-secondary:hover {
  background: var(--bg-glass-hover);
  border-color: var(--border-highlight);
  transform: translateY(-2px);
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-muted);
  border: 1px dashed var(--border-subtle);
  font-size: 0.88rem;
  padding: 10px 18px;
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-main);
  border-color: var(--border-highlight);
}

.btn-block {
  width: 100%;
}

.gradient-text {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* --------------------------------------------------------------------------
   6. Hero Section
   -------------------------------------------------------------------------- */
.hero-section {
  position: relative;
  min-height: 100vh;
  padding-top: calc(var(--header-height) + 60px);
  padding-bottom: 80px;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero-background-glow {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
  z-index: 0;
}

.glow-sphere {
  position: absolute;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.25;
}

.sphere-1 {
  top: -100px;
  right: -50px;
  background: #00f2fe;
}

.sphere-2 {
  bottom: -150px;
  left: -100px;
  background: #6366f1;
}

.hero-layout {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.3);
  border-radius: var(--radius-full);
  margin-bottom: 24px;
}

.status-indicator {
  width: 8px;
  height: 8px;
  background-color: var(--accent-emerald);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--accent-emerald);
  animation: pulse-dot 2s infinite;
}

.status-text {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent-emerald);
}

.hero-title {
  font-size: 3rem;
  line-height: 1.15;
  font-weight: 800;
  letter-spacing: -1px;
  margin-bottom: 20px;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-muted);
  line-height: 1.7;
  max-width: 560px;
  margin-bottom: 32px;
}

.hero-subtitle strong {
  color: var(--text-main);
  font-weight: 600;
}

.hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  margin-bottom: 36px;
}

.hero-entity-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.entity-badge {
  font-size: 0.82rem;
  font-weight: 500;
  padding: 5px 12px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  color: var(--text-muted);
}

/* Avatar Visual Card */
.hero-visual {
  display: flex;
  justify-content: center;
}

.avatar-card-wrapper {
  position: relative;
  width: 360px;
  height: 360px;
}

.avatar-glow-ring {
  position: absolute;
  inset: -6px;
  background: var(--gradient-primary);
  border-radius: 36px;
  opacity: 0.6;
  filter: blur(14px);
  z-index: 0;
  animation: borderRotate 8s linear infinite;
}

@keyframes borderRotate {
  0% { filter: blur(14px) hue-rotate(0deg); }
  50% { filter: blur(20px) hue-rotate(60deg); }
  100% { filter: blur(14px) hue-rotate(0deg); }
}

.avatar-figure {
  position: relative;
  width: 100%;
  height: 100%;
  border-radius: 32px;
  overflow: hidden;
  border: 2px solid var(--border-highlight);
  background: var(--bg-secondary);
  z-index: 1;
  box-shadow: var(--shadow-lg);
}

.avatar-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.avatar-card-wrapper:hover .avatar-image {
  transform: scale(1.04);
}

/* Floating Metric Chips */
.floating-chip {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  z-index: 2;
  animation: floatChip 4s ease-in-out infinite alternate;
}

.chip-top-left {
  top: -15px;
  left: -25px;
  animation-delay: 0s;
}

.chip-bottom-right {
  bottom: -20px;
  right: -25px;
  animation-delay: 1.5s;
}

@keyframes floatChip {
  0% { transform: translateY(0px); }
  100% { transform: translateY(-8px); }
}

.chip-icon {
  font-size: 1.4rem;
}

.chip-info {
  display: flex;
  flex-direction: column;
}

.chip-label {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-faint);
  font-weight: 700;
}

.chip-val {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--text-main);
}

/* --------------------------------------------------------------------------
   7. AI Snapshot Box (GEO / AI SEO)
   -------------------------------------------------------------------------- */
.section {
  padding: 90px 0;
  position: relative;
}

.section-header {
  margin-bottom: 50px;
}

.section-eyebrow {
  display: inline-block;
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--accent-cyan);
  margin-bottom: 8px;
}

.section-title {
  font-size: 2.3rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  margin-bottom: 14px;
}

.section-desc {
  font-size: 1.08rem;
  color: var(--text-muted);
  max-width: 650px;
  margin: 0 auto;
}

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

.ai-box-glass {
  background: var(--bg-glass-card);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border-highlight);
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow: var(--shadow-glow);
  position: relative;
  overflow: hidden;
}

.ai-box-glass::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient-primary);
}

.ai-box-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 16px;
}

.ai-chip {
  display: inline-block;
  font-family: var(--font-family-mono);
  font-size: 0.76rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--accent-cyan);
  margin-bottom: 4px;
}

.text-sm-header {
  font-size: 1.6rem !important;
  margin-bottom: 0;
}

.ai-verify-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  background: rgba(16, 185, 129, 0.12);
  border: 1px solid rgba(16, 185, 129, 0.35);
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent-emerald);
}

.ai-box-lead {
  font-size: 1rem;
  color: var(--text-muted);
  margin-bottom: 28px;
  line-height: 1.6;
}

.ai-fact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 16px;
  margin-bottom: 28px;
}

.ai-fact-card {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 14px 18px;
  transition: var(--transition-smooth);
}

.ai-fact-card:hover {
  border-color: var(--border-highlight);
  background: var(--bg-glass-hover);
}

.ai-fact-label {
  font-size: 0.76rem;
  font-family: var(--font-family-mono);
  text-transform: uppercase;
  color: var(--accent-cyan);
  letter-spacing: 0.5px;
  margin-bottom: 4px;
}

.ai-fact-value {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-main);
}

.link-highlight {
  color: var(--accent-blue);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.ai-prompt-box {
  background: #03060d;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  padding: 16px 20px;
}

.prompt-box-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
}

.prompt-tag {
  font-family: var(--font-family-mono);
  font-size: 0.78rem;
  color: var(--text-faint);
}

.copy-small-btn {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition-smooth);
}

.copy-small-btn:hover {
  background: var(--accent-indigo);
  color: #fff;
}

.prompt-pre {
  font-family: var(--font-family-mono);
  font-size: 0.88rem;
  color: #a5f3fc;
  white-space: pre-wrap;
  word-break: break-word;
}

/* --------------------------------------------------------------------------
   8. About Section
   -------------------------------------------------------------------------- */
.about-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 48px;
  align-items: start;
}

.about-text-column p {
  color: var(--text-muted);
  font-size: 1.05rem;
  margin-bottom: 20px;
}

.about-text-column strong {
  color: var(--text-main);
}

.about-text-column em {
  color: var(--accent-cyan);
  font-style: normal;
  font-weight: 600;
}

.about-subheading {
  font-size: 1.6rem;
  font-weight: 700;
  margin-bottom: 20px;
  letter-spacing: -0.3px;
}

.philosophy-cards {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 32px;
}

.phil-card {
  display: flex;
  gap: 16px;
  padding: 16px 20px;
  background: var(--bg-glass-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  transition: var(--transition-smooth);
}

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

.phil-icon {
  font-size: 1.6rem;
  line-height: 1;
}

.phil-title {
  font-size: 1.02rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.phil-desc {
  font-size: 0.88rem !important;
  color: var(--text-muted);
  margin-bottom: 0 !important;
}

.about-stats-column {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.stats-glass-card {
  background: var(--bg-glass-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  transition: var(--transition-smooth);
}

.stats-glass-card:hover {
  border-color: var(--border-highlight);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.stat-number {
  font-size: 2.4rem;
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1.1;
  margin-bottom: 8px;
}

.stat-title {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.stat-note {
  font-size: 0.8rem;
  color: var(--text-faint);
  line-height: 1.4;
}

/* --------------------------------------------------------------------------
   9. Skills Section & Interactive Filtering
   -------------------------------------------------------------------------- */
.skill-tabs-container {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 40px;
}

.skill-tab {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
  font-size: 0.88rem;
  font-weight: 600;
  padding: 9px 18px;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: var(--transition-smooth);
}

.skill-tab:hover,
.skill-tab.active {
  background: var(--accent-indigo);
  color: #fff;
  border-color: var(--accent-indigo);
  box-shadow: 0 4px 14px rgba(99, 102, 241, 0.35);
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 20px;
}

.skill-card {
  background: var(--bg-glass-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: var(--transition-smooth);
  display: flex;
  flex-direction: column;
}

.skill-card:hover {
  border-color: var(--border-highlight);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.skill-card.hidden {
  display: none !important;
}

.skill-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

.skill-icon {
  font-size: 1.8rem;
}

.skill-level {
  font-size: 0.75rem;
  font-family: var(--font-family-mono);
  font-weight: 600;
  color: var(--accent-cyan);
  background: rgba(0, 242, 254, 0.08);
  padding: 4px 10px;
  border-radius: var(--radius-full);
  border: 1px solid rgba(0, 242, 254, 0.2);
}

.skill-name {
  font-size: 1.18rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.skill-detail {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.5;
  margin-bottom: 16px;
  flex-grow: 1;
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.skill-tags span {
  font-size: 0.72rem;
  font-family: var(--font-family-mono);
  background: var(--bg-tertiary);
  color: var(--text-faint);
  padding: 3px 8px;
  border-radius: 4px;
}

/* --------------------------------------------------------------------------
   10. Career & Timeline Section
   -------------------------------------------------------------------------- */
.timeline-container {
  position: relative;
  max-width: 860px;
  margin: 0 auto;
  padding-left: 36px;
}

.timeline-container::before {
  content: '';
  position: absolute;
  top: 10px;
  bottom: 10px;
  left: 9px;
  width: 2px;
  background: linear-gradient(to bottom, var(--accent-cyan), var(--accent-indigo), transparent);
}

.timeline-item {
  position: relative;
  margin-bottom: 40px;
}

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

.timeline-marker {
  position: absolute;
  top: 10px;
  left: -36px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--bg-primary);
  border: 3px solid var(--accent-cyan);
  box-shadow: 0 0 10px var(--accent-cyan);
  transition: var(--transition-smooth);
}

.timeline-item:hover .timeline-marker {
  transform: scale(1.3);
  background: var(--accent-cyan);
}

.timeline-content {
  background: var(--bg-glass-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: var(--transition-smooth);
}

.timeline-content:hover {
  border-color: var(--border-highlight);
  box-shadow: var(--shadow-md);
}

.timeline-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 14px;
}

.timeline-role {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.2px;
}

.timeline-company {
  font-size: 0.92rem;
  color: var(--accent-cyan);
  font-weight: 600;
}

.timeline-date {
  font-size: 0.82rem;
  font-family: var(--font-family-mono);
  color: var(--text-faint);
  background: var(--bg-tertiary);
  padding: 4px 10px;
  border-radius: var(--radius-full);
}

.timeline-desc {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 14px;
}

.timeline-bullets {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.timeline-bullets li {
  font-size: 0.88rem;
  color: var(--text-muted);
  position: relative;
  padding-left: 20px;
}

.timeline-bullets li::before {
  content: '▹';
  position: absolute;
  left: 0;
  color: var(--accent-cyan);
}

/* --------------------------------------------------------------------------
   11. Projects Section
   -------------------------------------------------------------------------- */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 28px;
}

.project-card {
  background: var(--bg-glass-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 32px;
  display: flex;
  flex-direction: column;
  transition: var(--transition-smooth);
}

.project-card:hover {
  border-color: var(--border-highlight);
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.project-badge {
  align-self: flex-start;
  font-size: 0.74rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  padding: 4px 10px;
  background: rgba(99, 102, 241, 0.15);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-full);
  color: #a5b4fc;
  margin-bottom: 16px;
}

.project-title {
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 12px;
  line-height: 1.3;
}

.project-desc {
  font-size: 0.93rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 20px;
  flex-grow: 1;
}

.project-tech-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
}

.project-tech-list span {
  font-size: 0.75rem;
  font-family: var(--font-family-mono);
  background: var(--bg-tertiary);
  color: var(--accent-cyan);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
}

.project-links {
  display: flex;
  align-items: center;
  gap: 12px;
}

.project-link-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--accent-blue);
  transition: var(--transition-smooth);
}

.project-link-btn:hover {
  color: var(--accent-cyan);
  transform: translateX(3px);
}

/* --------------------------------------------------------------------------
   12. FAQ Accordion (Google SEO Rich Snippets & AI Conversational Extraction)
   -------------------------------------------------------------------------- */
.faq-accordion-wrapper {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.faq-item {
  background: var(--bg-glass-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition-smooth);
}

.faq-item:hover,
.faq-item.active {
  border-color: var(--border-highlight);
}

.faq-question-btn {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  background: transparent;
  border: none;
  text-align: left;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-main);
  cursor: pointer;
  transition: var(--transition-smooth);
}

.faq-arrow {
  font-size: 1.4rem;
  line-height: 1;
  color: var(--accent-cyan);
  transition: transform 0.3s ease;
}

.faq-item.active .faq-arrow {
  transform: rotate(45deg);
}

.faq-answer-panel {
  padding: 0 24px 20px 24px;
}

.faq-answer-content p {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.65;
}

.faq-answer-content code {
  font-family: var(--font-family-mono);
  background: var(--bg-tertiary);
  color: var(--accent-cyan);
  padding: 2px 6px;
  border-radius: 4px;
}

/* --------------------------------------------------------------------------
   13. Contact Section
   -------------------------------------------------------------------------- */
.contact-card-wrapper {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 40px;
  background: var(--bg-glass-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 48px;
  box-shadow: var(--shadow-lg);
}

.contact-lead {
  font-size: 1.05rem;
  color: var(--text-muted);
  margin-bottom: 32px;
}

.contact-detail-items {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 14px;
}

.contact-icon {
  font-size: 1.4rem;
  width: 44px;
  height: 44px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
}

.contact-item-title {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-faint);
  font-weight: 700;
}

.contact-item-value {
  font-size: 0.98rem;
  font-weight: 600;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 10px;
}

.copy-inline-btn {
  background: rgba(0, 242, 254, 0.1);
  border: 1px solid rgba(0, 242, 254, 0.3);
  color: var(--accent-cyan);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 3px 8px;
  border-radius: 4px;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.copy-inline-btn:hover {
  background: var(--accent-cyan);
  color: #040810;
}

.social-links-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 4px;
}

.social-icon-btn {
  width: 38px;
  height: 38px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  transition: var(--transition-smooth);
}

.social-icon-btn:hover {
  color: var(--text-main);
  border-color: var(--border-highlight);
  transform: translateY(-2px);
}

/* Contact Form */
.styled-form {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  color: var(--text-main);
  font-size: 0.95rem;
  transition: var(--transition-smooth);
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 12px rgba(0, 242, 254, 0.2);
}

.form-status-alert {
  padding: 14px;
  background: rgba(16, 185, 129, 0.15);
  border: 1px solid var(--accent-emerald);
  border-radius: var(--radius-md);
  color: var(--accent-emerald);
  font-size: 0.92rem;
  font-weight: 600;
  text-align: center;
}

/* --------------------------------------------------------------------------
   14. Site Footer
   -------------------------------------------------------------------------- */
.site-footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-subtle);
  padding: 70px 0 30px;
}

.footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 50px;
}

.brand-col .footer-tagline {
  font-size: 0.92rem;
  color: var(--text-muted);
  max-width: 380px;
  margin-top: 14px;
  line-height: 1.6;
}

.footer-heading {
  font-size: 0.92rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  margin-bottom: 18px;
  color: var(--text-main);
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  font-size: 0.88rem;
  color: var(--text-muted);
}

.footer-links a:hover {
  color: var(--accent-cyan);
  transform: translateX(2px);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  padding-top: 24px;
  border-top: 1px solid var(--border-subtle);
}

.copy-text {
  font-size: 0.84rem;
  color: var(--text-faint);
}

.back-to-top {
  font-size: 0.84rem;
  font-weight: 600;
  color: var(--accent-cyan);
}

/* --------------------------------------------------------------------------
   15. Toast Notification System
   -------------------------------------------------------------------------- */
.toast-notification {
  position: fixed;
  bottom: 30px;
  right: 30px;
  padding: 12px 20px;
  background: #0f172a;
  border: 1px solid var(--accent-cyan);
  border-radius: var(--radius-md);
  color: #fff;
  font-size: 0.88rem;
  font-weight: 600;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
  transform: translateY(100px);
  opacity: 0;
  pointer-events: none;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 9999;
}

.toast-notification.show {
  transform: translateY(0);
  opacity: 1;
}

/* --------------------------------------------------------------------------
   16. Media Queries & Responsive Layout
   -------------------------------------------------------------------------- */
@media (max-width: 992px) {
  .hero-layout {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 50px;
  }

  .hero-subtitle {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-cta-group {
    justify-content: center;
  }

  .hero-entity-strip {
    justify-content: center;
  }

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

  .contact-card-wrapper {
    grid-template-columns: 1fr;
    padding: 32px;
  }

  .footer-inner {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  :root {
    --header-height: 68px;
  }

  .hero-title {
    font-size: 2.2rem;
  }

  .section-title {
    font-size: 1.8rem;
  }

  .avatar-card-wrapper {
    width: 280px;
    height: 280px;
  }

  .floating-chip {
    display: none; /* Keep clean on small screens */
  }

  .mobile-menu-btn {
    display: flex;
  }

  .site-nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-subtle);
    padding: 24px;
    display: none;
  }

  .site-nav.open {
    display: block;
  }

  .site-nav .nav-list {
    flex-direction: column;
    align-items: flex-start;
    gap: 18px;
  }

  .about-stats-column {
    grid-template-columns: 1fr;
  }

  .footer-inner {
    grid-template-columns: 1fr;
  }
}

/* --------------------------------------------------------------------------
   17. Gallery Grid & Cards
   -------------------------------------------------------------------------- */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 28px;
}

.gallery-card {
  background: var(--bg-glass-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: var(--transition-smooth);
}

.gallery-card:hover {
  border-color: var(--border-highlight);
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.gallery-thumb-wrapper {
  position: relative;
  aspect-ratio: 4/3;
  overflow: hidden;
  background: var(--bg-tertiary);
}

.gallery-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

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

.gallery-overlay {
  position: absolute;
  inset: 0;
  background: rgba(8, 12, 20, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.gallery-card:hover .gallery-overlay {
  opacity: 1;
}

.zoom-badge {
  background: var(--bg-glass);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border-highlight);
  color: var(--text-main);
  padding: 8px 16px;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 600;
  transform: translateY(10px);
  transition: transform 0.3s ease;
}

.gallery-card:hover .zoom-badge {
  transform: translateY(0);
}

.gallery-content {
  padding: 24px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.gallery-tag {
  display: inline-block;
  font-size: 0.74rem;
  font-family: var(--font-family-mono);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--accent-cyan);
  margin-bottom: 8px;
}

.gallery-title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 8px;
  line-height: 1.35;
}

.gallery-caption {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* --------------------------------------------------------------------------
   18. Lightbox Modal
   -------------------------------------------------------------------------- */
.lightbox-modal {
  position: fixed;
  inset: 0;
  z-index: 99999;
  display: none;
  align-items: center;
  justify-content: center;
}

.lightbox-modal.active {
  display: flex;
}

.lightbox-overlay {
  position: absolute;
  inset: 0;
  background: rgba(5, 8, 15, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.lightbox-container {
  position: relative;
  z-index: 2;
  max-width: 92vw;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.lightbox-media {
  max-width: 85vw;
  max-height: 75vh;
  display: flex;
  justify-content: center;
  align-items: center;
}

.lightbox-img {
  max-width: 100%;
  max-height: 75vh;
  object-fit: contain;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-highlight);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.8);
}

.lightbox-caption {
  margin-top: 14px;
  text-align: center;
  color: var(--text-main);
  max-width: 700px;
}

.lightbox-caption strong {
  display: block;
  font-size: 1.1rem;
  margin-bottom: 4px;
}

.lightbox-caption p {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.lightbox-counter {
  font-family: var(--font-family-mono);
  font-size: 0.8rem;
  color: var(--accent-cyan);
}

.lightbox-close-btn {
  position: absolute;
  top: -45px;
  right: 0;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid var(--border-subtle);
  color: #fff;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  font-size: 1.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.lightbox-close-btn:hover {
  background: rgba(239, 68, 68, 0.8);
  transform: scale(1.1);
}

.lightbox-nav-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(15, 23, 42, 0.7);
  border: 1px solid var(--border-subtle);
  color: #fff;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  font-size: 1.4rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.lightbox-nav-btn:hover {
  background: var(--accent-indigo);
  border-color: var(--accent-cyan);
}

.lightbox-prev-btn {
  left: -70px;
}

.lightbox-next-btn {
  right: -70px;
}

@media (max-width: 768px) {
  .lightbox-prev-btn { left: 10px; }
  .lightbox-next-btn { right: 10px; }
  .lightbox-close-btn { top: -40px; right: 10px; }
}