/* ==========================================================================
   BARIŞ KOÇ - CYBERNETIC MECHATRONICS PORTFOLIO & CV THEME
   Dark High-Tech HUD, Glassmorphism, Neon Glow & Circuit Architecture
   ========================================================================== */

:root {
  /* Color Palette - Dark Mode (Default) */
  --bg-black: #06090e;
  --bg-surface: #0a0e17;
  --bg-card: rgba(14, 20, 32, 0.75);
  --bg-card-hover: rgba(19, 29, 48, 0.85);
  --bg-glass: rgba(10, 16, 26, 0.75);

  --neon-cyan: #00f0ff;
  --neon-cyan-glow: rgba(0, 240, 255, 0.35);
  --neon-green: #00ff9d;
  --neon-green-glow: rgba(0, 255, 157, 0.35);
  --neon-purple: #a855f7;
  --neon-amber: #f59e0b;
  --neon-red: #ff3366;

  --border-dim: rgba(0, 240, 255, 0.12);
  --border-bright: rgba(0, 240, 255, 0.4);
  --border-green: rgba(0, 255, 157, 0.3);

  --text-main: #f3f6fa;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  --text-heading: #ffffff;
  --heading-gradient: linear-gradient(135deg, #ffffff 40%, var(--neon-cyan) 100%);
  --card-shadow: 0 10px 30px rgba(0, 0, 0, 0.5), 0 0 20px rgba(0, 240, 255, 0.15);
  --input-bg: rgba(6, 10, 16, 0.8);
  --scanline-opacity: 0.45;
  --canvas-opacity: 0.85;

  /* Typography */
  --font-hud: 'Orbitron', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Courier New', monospace;
  --font-body: 'Rajdhani', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

  /* Layout */
  --container-max: 1240px;
  --header-height: 80px;
  --radius-sm: 4px;
  --radius-md: 10px;
  --radius-lg: 16px;

  /* Transitions */
  --trans-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --trans-smooth: 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  --theme-transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

[data-theme="light"] {
  /* Color Palette - High-Tech Light Mode */
  --bg-black: #f4f7fb;
  --bg-surface: #ffffff;
  --bg-card: rgba(255, 255, 255, 0.94);
  --bg-card-hover: #ffffff;
  --bg-glass: rgba(255, 255, 255, 0.88);

  --neon-cyan: #0284c7;
  --neon-cyan-glow: rgba(2, 132, 199, 0.25);
  --neon-green: #059669;
  --neon-green-glow: rgba(5, 150, 105, 0.25);
  --neon-purple: #7c3aed;
  --neon-amber: #d97706;
  --neon-red: #e11d48;

  --border-dim: rgba(2, 132, 199, 0.18);
  --border-bright: rgba(2, 132, 199, 0.45);
  --border-green: rgba(5, 150, 105, 0.35);

  --text-main: #0f172a;
  --text-muted: #475569;
  --text-dim: #64748b;
  --text-heading: #0f172a;
  --heading-gradient: linear-gradient(135deg, #0f172a 40%, #0284c7 100%);
  --card-shadow: 0 8px 25px rgba(2, 132, 199, 0.08), 0 1px 3px rgba(0, 0, 0, 0.05);
  --input-bg: #f8fafc;
  --scanline-opacity: 0;
  --canvas-opacity: 0.6;
}

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

html {
  scroll-behavior: smooth;
  color-scheme: dark;
}

body {
  background-color: var(--bg-black);
  color: var(--text-main);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
  transition: var(--theme-transition);
}

/* Background Circuit Canvas */
#circuitCanvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: -1;
  pointer-events: none;
  opacity: var(--canvas-opacity);
  transition: opacity 0.3s ease;
}

/* Noise & Scanline Overlay */
.scanline-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: -1;
  pointer-events: none;
  background: linear-gradient(
    rgba(18, 16, 16, 0) 50%, 
    rgba(0, 0, 0, 0.25) 50%
  ), linear-gradient(
    90deg,
    rgba(255, 0, 0, 0.01),
    rgba(0, 255, 0, 0.005),
    rgba(0, 255, 0, 0.01)
  );
  background-size: 100% 3px, 6px 100%;
  opacity: var(--scanline-opacity);
  transition: opacity 0.3s ease;
}

/* Typography Utility */
h1, h2, h3, h4, .hud-heading {
  font-family: var(--font-hud);
  letter-spacing: 1px;
  color: var(--text-heading);
  font-weight: 700;
  transition: color 0.3s ease;
}

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

ul {
  list-style: none;
}

button, input, textarea {
  font-family: inherit;
}

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

/* Section Common */
.section {
  padding: 100px 0;
  position: relative;
}

.section-header {
  margin-bottom: 50px;
  text-align: center;
  position: relative;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 2.5px;
  color: var(--neon-cyan);
  padding: 4px 14px;
  background: rgba(0, 240, 255, 0.08);
  border: 1px solid var(--border-bright);
  border-radius: var(--radius-sm);
  margin-bottom: 14px;
  transition: var(--theme-transition);
}

.section-title {
  font-size: 36px;
  font-weight: 800;
  margin-bottom: 12px;
  background: var(--heading-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.section-subtitle {
  color: var(--text-muted);
  max-width: 680px;
  margin: 0 auto;
  font-size: 18px;
}

/* Cyber Panels (Glassmorphism + Cut Corner Accents) */
.cyber-panel {
  background: var(--bg-card);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--border-dim);
  border-radius: var(--radius-md);
  position: relative;
  box-shadow: var(--card-shadow);
  transition: var(--theme-transition), transform var(--trans-smooth);
}

.cyber-panel::before {
  content: '';
  position: absolute;
  top: -1px;
  left: 20px;
  width: 40px;
  height: 2px;
  background: var(--neon-cyan);
  box-shadow: 0 0 10px var(--neon-cyan);
  transition: width var(--trans-smooth);
}

.cyber-panel:hover {
  border-color: var(--border-bright);
  box-shadow: var(--card-shadow);
  transform: translateY(-4px);
}

.cyber-panel:hover::before {
  width: 80px;
}

/* Cyber Buttons */
.cyber-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-family: var(--font-hud);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  padding: 12px 26px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  position: relative;
  transition: all var(--trans-fast);
  text-decoration: none;
  border: none;
}

.cyber-btn-primary {
  background: linear-gradient(135deg, #00f0ff 0%, #00b4d8 100%);
  color: #030a14;
  box-shadow: 0 0 20px var(--neon-cyan-glow);
}

.cyber-btn-primary:hover {
  background: linear-gradient(135deg, #38f4ff 0%, #00f0ff 100%);
  box-shadow: 0 0 30px rgba(0, 240, 255, 0.6);
  transform: translateY(-2px);
}

.cyber-btn-outline {
  background: rgba(0, 240, 255, 0.05);
  color: var(--neon-cyan);
  border: 1px solid var(--neon-cyan);
  box-shadow: inset 0 0 10px rgba(0, 240, 255, 0.1);
}

.cyber-btn-outline:hover {
  background: rgba(0, 240, 255, 0.18);
  box-shadow: 0 0 20px rgba(0, 240, 255, 0.35);
  color: #ffffff;
  transform: translateY(-2px);
}

.cyber-btn-green {
  background: linear-gradient(135deg, #00ff9d 0%, #059669 100%);
  color: #03140c;
  box-shadow: 0 0 20px var(--neon-green-glow);
}

.cyber-btn-green:hover {
  box-shadow: 0 0 30px rgba(0, 255, 157, 0.6);
  transform: translateY(-2px);
}

.cyber-btn-sm {
  padding: 8px 16px;
  font-size: 11px;
}

/* Tech Badges & Tags */
.tech-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 4px 10px;
  background: rgba(0, 240, 255, 0.06);
  border: 1px solid rgba(0, 240, 255, 0.25);
  color: #7dd3fc;
  border-radius: var(--radius-sm);
  white-space: nowrap;
}

.tech-tag-more {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 4px 8px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: var(--text-muted);
  border-radius: var(--radius-sm);
}

.cyber-badge-sm {
  font-family: var(--font-hud);
  font-size: 11px;
  color: var(--neon-cyan);
  background: rgba(6, 12, 20, 0.85);
  border: 1px solid var(--neon-cyan);
  padding: 3px 8px;
  border-radius: var(--radius-sm);
}

.status-indicator-sm {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--neon-green);
  background: rgba(6, 20, 14, 0.85);
  border: 1px solid var(--neon-green);
  padding: 3px 8px;
  border-radius: var(--radius-sm);
}

/* ==========================================================================
   HEADER & NAVIGATION
   ========================================================================== */
.main-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  z-index: 100;
  background: rgba(6, 9, 14, 0.7);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-dim);
  transition: all var(--trans-smooth);
}

.main-header.scrolled {
  height: 68px;
  background: rgba(6, 9, 14, 0.92);
  border-bottom-color: var(--border-bright);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.6);
}

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

.logo-area {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-badge {
  font-family: var(--font-hud);
  font-size: 16px;
  font-weight: 800;
  padding: 6px 12px;
  background: rgba(0, 240, 255, 0.1);
  border: 1.5px solid var(--neon-cyan);
  color: var(--neon-cyan);
  border-radius: var(--radius-sm);
  box-shadow: 0 0 15px var(--neon-cyan-glow);
}

.logo-text {
  display: flex;
  flex-direction: column;
}

.logo-name {
  font-family: var(--font-hud);
  font-size: 18px;
  font-weight: 700;
  color: #ffffff;
  letter-spacing: 1px;
}

.logo-role {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--neon-cyan);
  letter-spacing: 2px;
}

.navbar-links {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-link {
  font-family: var(--font-hud);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--text-muted);
  position: relative;
  transition: color var(--trans-fast);
  padding: 6px 0;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--neon-cyan);
  box-shadow: 0 0 8px var(--neon-cyan);
  transition: width var(--trans-fast);
}

.nav-link:hover,
.nav-link.active {
  color: var(--neon-cyan);
}

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

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

/* Theme Toggle Button */
.theme-toggle-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  background: rgba(0, 240, 255, 0.08);
  border: 1px solid var(--border-bright);
  color: var(--neon-cyan);
  cursor: pointer;
  position: relative;
  transition: all var(--trans-fast);
  padding: 0;
}

[data-theme="light"] .theme-toggle-btn {
  background: rgba(2, 132, 199, 0.08);
  border-color: var(--border-bright);
  color: var(--neon-cyan);
}

.theme-toggle-btn:hover {
  transform: scale(1.08);
  box-shadow: 0 0 15px var(--neon-cyan-glow);
}

.theme-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 17px;
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.3s ease;
}

/* Icons toggle based on theme */
[data-theme="dark"] .theme-icon.moon-icon { display: none; }
[data-theme="dark"] .theme-icon.sun-icon { display: block; }
[data-theme="light"] .theme-icon.moon-icon { display: block; }
[data-theme="light"] .theme-icon.sun-icon { display: none; }

.mobile-menu-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border-bright);
  border-radius: var(--radius-sm);
  color: var(--neon-cyan);
  padding: 8px;
  cursor: pointer;
}

/* ==========================================================================
   HERO SECTION
   ========================================================================== */
.hero-section {
  padding-top: calc(var(--header-height) + 60px);
  padding-bottom: 80px;
  position: relative;
  min-height: 90vh;
  display: flex;
  align-items: center;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.25fr 0.75fr;
  gap: 50px;
  align-items: center;
}

.hero-status-tag {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 16px;
  background: rgba(0, 255, 157, 0.08);
  border: 1px solid var(--border-green);
  border-radius: 20px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--neon-green);
  margin-bottom: 24px;
}

.live-dot {
  width: 8px;
  height: 8px;
  background-color: var(--neon-green);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--neon-green);
  animation: pulse-dot 1.8s infinite;
}

@keyframes pulse-dot {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(0, 255, 157, 0.7); }
  70% { transform: scale(1); box-shadow: 0 0 0 10px rgba(0, 255, 157, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(0, 255, 157, 0); }
}

.hero-title {
  font-size: 54px;
  line-height: 1.1;
  font-weight: 900;
  margin-bottom: 18px;
  letter-spacing: -0.5px;
}

.hero-name-accent {
  background: linear-gradient(135deg, #00f0ff 20%, #00ff9d 80%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.hero-typewriter-wrap {
  display: flex;
  align-items: center;
  gap: 4px;
  font-family: var(--font-mono);
  font-size: 20px;
  color: #7dd3fc;
  margin-bottom: 24px;
  min-height: 32px;
}

.typewriter-cursor {
  display: inline-block;
  color: var(--neon-cyan);
  font-weight: bold;
  animation: blink 0.8s infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

.hero-desc {
  color: var(--text-muted);
  font-size: 19px;
  line-height: 1.6;
  margin-bottom: 34px;
  max-width: 620px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 44px;
}

/* Telemetry Counters */
.hero-telemetry-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  padding: 20px;
  background: rgba(10, 16, 26, 0.6);
  border: 1px solid var(--border-dim);
  border-radius: var(--radius-md);
  backdrop-filter: blur(10px);
  transition: var(--theme-transition);
}

.telemetry-card {
  display: flex;
  flex-direction: column;
  position: relative;
}

.telemetry-card:not(:last-child)::after {
  content: '';
  position: absolute;
  right: -8px;
  top: 15%;
  height: 70%;
  width: 1px;
  background: var(--border-dim);
}

.telemetry-num {
  font-family: var(--font-hud);
  font-size: 28px;
  font-weight: 800;
  color: var(--neon-cyan);
  line-height: 1;
  margin-bottom: 6px;
  display: flex;
  align-items: baseline;
  gap: 4px;
}

.telemetry-suffix {
  font-size: 14px;
  color: var(--neon-green);
  font-family: var(--font-mono);
}

.telemetry-label {
  font-family: var(--font-body);
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.3;
}

/* Avatar & HUD Hologram Column */
.hero-avatar-card {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 30px;
  text-align: center;
}

.avatar-hud-frame {
  position: relative;
  width: 230px;
  height: 230px;
  margin-bottom: 24px;
}

.avatar-hud-ring {
  position: absolute;
  top: -10px;
  left: -10px;
  width: 250px;
  height: 250px;
  border: 2px dashed rgba(0, 240, 255, 0.4);
  border-radius: 50%;
  animation: rotate-ring 35s linear infinite;
  pointer-events: none;
}

@keyframes rotate-ring {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.avatar-img-wrap {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  overflow: hidden;
  position: relative;
  border: 3px solid var(--neon-cyan);
  box-shadow: 0 0 25px var(--neon-cyan-glow);
  background: var(--bg-surface);
}

.avatar-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--trans-smooth);
}

.avatar-img-wrap:hover img {
  transform: scale(1.05);
}

.change-avatar-btn {
  position: absolute;
  bottom: 0;
  right: 10px;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--neon-cyan);
  border: 2px solid var(--bg-black);
  color: #030a14;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 0 12px var(--neon-cyan-glow);
  transition: transform var(--trans-fast);
}

.change-avatar-btn:hover {
  transform: scale(1.15);
}

.avatar-info-card {
  width: 100%;
}

.avatar-name {
  font-size: 22px;
  margin-bottom: 4px;
}

.avatar-dept {
  color: var(--neon-cyan);
  font-family: var(--font-mono);
  font-size: 13px;
  margin-bottom: 12px;
}

.quick-spec-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
}

.spec-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  padding: 5px 12px;
  border-radius: 20px;
}

.pill-icon {
  font-size: 14px;
  display: inline-flex;
  align-items: center;
  line-height: 1;
}

/* ==========================================================================
   ABOUT & PERSONAL CREDENTIALS SECTION
   ========================================================================== */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
}

.about-bio-panel {
  padding: 36px;
}

.about-bio-text {
  color: var(--text-muted);
  font-size: 18px;
  line-height: 1.8;
  margin-bottom: 24px;
}

.credentials-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
}

.cred-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px;
  background: rgba(6, 12, 20, 0.6);
  border: 1px solid var(--border-dim);
  border-radius: var(--radius-sm);
  transition: var(--theme-transition);
}

.cred-icon {
  font-size: 20px;
}

.cred-label {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-dim);
  text-transform: uppercase;
}

.cred-value {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-main);
}

/* Languages & Education Panel */
.about-side-panel {
  padding: 36px;
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.sub-panel-title {
  font-size: 18px;
  margin-bottom: 16px;
  color: var(--neon-cyan);
  display: flex;
  align-items: center;
  gap: 10px;
}

.lang-item {
  margin-bottom: 16px;
}

.lang-header {
  display: flex;
  justify-content: space-between;
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 6px;
}

.lang-bar {
  height: 6px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 3px;
  overflow: hidden;
  margin-bottom: 6px;
}

.lang-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--neon-cyan), var(--neon-green));
  border-radius: 3px;
}

.lang-desc {
  font-size: 13px;
  color: var(--text-muted);
}

/* ==========================================================================
   EXPERIENCE & EDUCATION TIMELINE
   ========================================================================== */
.timeline-wrap {
  position: relative;
  max-width: 900px;
  margin: 0 auto;
  padding-left: 36px;
}

.timeline-wrap::before {
  content: '';
  position: absolute;
  top: 0;
  left: 12px;
  width: 2px;
  height: 100%;
  background: linear-gradient(180deg, var(--neon-cyan) 0%, rgba(0, 240, 255, 0.1) 100%);
}

.timeline-item {
  position: relative;
  margin-bottom: 36px;
  padding: 30px;
}

.timeline-marker {
  position: absolute;
  left: -32px;
  top: 36px;
  width: 18px;
  height: 18px;
}

.marker-dot {
  position: absolute;
  top: 4px;
  left: 4px;
  width: 10px;
  height: 10px;
  background: var(--neon-cyan);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--neon-cyan);
}

.marker-pulse {
  position: absolute;
  top: 0;
  left: 0;
  width: 18px;
  height: 18px;
  border: 1px solid var(--neon-cyan);
  border-radius: 50%;
  animation: marker-wave 2s infinite;
}

@keyframes marker-wave {
  0% { transform: scale(0.6); opacity: 1; }
  100% { transform: scale(1.8); opacity: 0; }
}

.timeline-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 18px;
  flex-wrap: wrap;
  gap: 12px;
}

.timeline-company-badge {
  display: inline-block;
  font-family: var(--font-hud);
  font-size: 13px;
  color: var(--neon-cyan);
  margin-bottom: 4px;
}

.timeline-role {
  font-size: 22px;
  font-weight: 700;
  color: #ffffff;
}

.timeline-meta {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 4px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-muted);
}

.timeline-period,
.timeline-location {
  display: flex;
  align-items: center;
  gap: 6px;
}

.timeline-bullets {
  margin-bottom: 20px;
}

.timeline-bullets li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 10px;
  color: var(--text-muted);
  font-size: 16px;
}

.bullet-icon {
  color: var(--neon-cyan);
  font-size: 13px;
  line-height: 1.6;
}

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

/* ==========================================================================
   PROJECTS SECTION & CARDS
   ========================================================================== */
.projects-filter-bar {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 40px;
}

.filter-btn {
  font-family: var(--font-hud);
  font-size: 12px;
  letter-spacing: 1px;
  padding: 10px 20px;
  background: rgba(10, 16, 26, 0.6);
  border: 1px solid var(--border-dim);
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  cursor: pointer;
  transition: all var(--trans-fast);
}

.filter-btn:hover {
  border-color: var(--border-bright);
  color: #ffffff;
}

.filter-btn.active {
  background: rgba(0, 240, 255, 0.15);
  border-color: var(--neon-cyan);
  color: var(--neon-cyan);
  box-shadow: 0 0 15px var(--neon-cyan-glow);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
  gap: 28px;
}

.project-card {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  cursor: pointer;
}

.card-media-wrapper {
  position: relative;
  width: 100%;
  height: 220px;
  overflow: hidden;
  background: #060910;
  border-bottom: 1px solid var(--border-dim);
}

.card-thumb {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--trans-smooth);
}

.project-card:hover .card-thumb {
  transform: scale(1.06);
}

.card-overlay {
  position: absolute;
  top: 14px;
  left: 14px;
  right: 14px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 2;
}

.hud-reticle {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(circle, transparent 60%, rgba(0, 240, 255, 0.05) 100%);
}

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

.card-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
}

.card-category {
  color: var(--neon-cyan);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.card-badge-tag {
  color: var(--neon-green);
  background: rgba(0, 255, 157, 0.08);
  padding: 2px 8px;
  border-radius: 3px;
  font-size: 10px;
}

.card-title {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 10px;
  line-height: 1.3;
  color: #ffffff;
}

.card-summary {
  color: var(--text-muted);
  font-size: 15px;
  line-height: 1.5;
  margin-bottom: 18px;
  flex-grow: 1;
}

.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 20px;
}

.card-footer {
  border-top: 1px solid var(--border-dim);
  padding-top: 16px;
}

.view-details-btn {
  width: 100%;
}

/* ==========================================================================
   SKILLS & COMPETENCIES MATRIX
   ========================================================================== */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(370px, 1fr));
  gap: 28px;
}

.skill-category-card {
  padding: 28px;
}

.skill-category-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
  border-bottom: 1px solid var(--border-dim);
  padding-bottom: 14px;
}

.skill-icon-wrap {
  font-size: 22px;
}

.skill-category-title {
  font-size: 19px;
  color: #ffffff;
}

.skill-list {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.skill-item-info {
  display: flex;
  justify-content: space-between;
  margin-bottom: 6px;
  font-size: 15px;
  font-weight: 600;
}

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

.skill-percent {
  font-family: var(--font-mono);
  color: var(--neon-cyan);
  font-size: 13px;
}

.skill-progress-bar {
  height: 6px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 3px;
  overflow: hidden;
  margin-bottom: 6px;
}

.skill-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, #00f0ff 0%, #00ff9d 100%);
  border-radius: 3px;
  transition: width 1.2s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: 0 0 10px rgba(0, 240, 255, 0.5);
}

.skill-note {
  font-size: 12px;
  color: var(--text-dim);
}

/* ==========================================================================
   CONTACT SECTION & FOOTER
   ========================================================================== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 36px;
}

.contact-card {
  padding: 36px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 20px;
  background: rgba(6, 12, 20, 0.6);
  border: 1px solid var(--border-dim);
  border-radius: var(--radius-md);
  margin-bottom: 16px;
  transition: all var(--trans-fast);
}

.contact-item:hover {
  border-color: var(--neon-cyan);
  background: rgba(0, 240, 255, 0.08);
}

.contact-icon {
  width: 44px;
  height: 44px;
  border-radius: 8px;
  background: rgba(0, 240, 255, 0.1);
  border: 1px solid var(--neon-cyan);
  color: var(--neon-cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
}

.contact-details {
  flex-grow: 1;
}

.contact-title {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-dim);
  text-transform: uppercase;
}

.contact-value {
  font-size: 16px;
  font-weight: 600;
  color: #ffffff;
}

.copy-action-btn {
  background: none;
  border: 1px solid var(--border-bright);
  color: var(--neon-cyan);
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  cursor: pointer;
  transition: all var(--trans-fast);
}

.copy-action-btn:hover {
  background: var(--neon-cyan);
  color: #030a14;
}

.quick-msg-card {
  padding: 36px;
}

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

.form-label {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-dim);
  display: block;
  letter-spacing: 0.5px;
}

.form-input {
  width: 100%;
  padding: 12px 14px;
  background: var(--input-bg);
  border: 1px solid var(--border-dim);
  border-radius: var(--radius-sm);
  color: var(--text-main);
  font-size: 14px;
  font-family: var(--font-body);
  transition: all var(--trans-fast);
}

.form-input:focus {
  outline: none;
  border-color: var(--neon-cyan);
  box-shadow: 0 0 10px var(--neon-cyan-glow);
}

.quick-actions-bar {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-top: 20px;
}

/* Cyber Toast Notification */
.cyber-toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: rgba(10, 18, 30, 0.95);
  border: 1.5px solid var(--neon-cyan);
  box-shadow: 0 0 20px var(--neon-cyan-glow);
  color: #ffffff;
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 13px;
  z-index: 1000;
  transform: translateY(100px);
  opacity: 0;
  pointer-events: none;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.cyber-toast.visible {
  transform: translateY(0);
  opacity: 1;
}

/* Footer */
.main-footer {
  padding: 40px 0;
  border-top: 1px solid var(--border-dim);
  background: var(--bg-surface);
  text-align: center;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-dim);
}

.footer-credits {
  margin-top: 6px;
  color: var(--text-muted);
}

.footer-credits span {
  color: var(--neon-cyan);
}

/* ==========================================================================
   RESPONSIVE MEDIA QUERIES
   ========================================================================== */
@media (max-width: 992px) {
  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-typewriter-wrap {
    justify-content: center;
  }

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

  .hero-actions {
    justify-content: center;
  }

  .hero-telemetry-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .telemetry-card:nth-child(2)::after {
    display: none;
  }

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

  .navbar-links {
    position: fixed;
    top: var(--header-height);
    left: 0;
    width: 100%;
    background: rgba(6, 9, 14, 0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 30px;
    gap: 20px;
    border-bottom: 1px solid var(--border-bright);
    transform: translateY(-150%);
    transition: transform var(--trans-smooth);
  }

  .navbar-links.open {
    transform: translateY(0);
  }

  .mobile-menu-toggle {
    display: block;
  }
}

@media (max-width: 640px) {
  .hero-title {
    font-size: 38px;
  }

  .credentials-list {
    grid-template-columns: 1fr;
  }

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

  .hero-telemetry-grid {
    grid-template-columns: 1fr;
  }

  .telemetry-card::after {
    display: none !important;
  }
/* ==========================================================================
   LIGHT MODE COMPONENT REFINEMENTS (HIGH-CONTRAST & CRYSTAL CLEAR)
   ========================================================================== */
[data-theme="light"] .main-header {
  background: rgba(255, 255, 255, 0.92);
  border-bottom: 1.5px solid rgba(2, 132, 199, 0.2);
}

[data-theme="light"] .main-header.scrolled {
  background: rgba(255, 255, 255, 0.98);
  border-bottom: 1.5px solid rgba(2, 132, 199, 0.35);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
}

[data-theme="light"] .logo-name {
  color: #0f172a;
}

[data-theme="light"] .cyber-panel {
  background: #ffffff !important;
  border: 1.5px solid #e2e8f0 !important;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05) !important;
}

[data-theme="light"] .cyber-panel::before {
  background: #0284c7;
  box-shadow: 0 0 10px rgba(2, 132, 199, 0.4);
}

[data-theme="light"] .cyber-panel:hover {
  border-color: #0284c7 !important;
  box-shadow: 0 8px 30px rgba(2, 132, 199, 0.12) !important;
}

[data-theme="light"] .sub-panel-title {
  color: #0284c7 !important;
}

/* Telemetry Grid in Light Mode */
[data-theme="light"] .hero-telemetry-grid {
  background: #ffffff !important;
  border: 1.5px solid #cbd5e1 !important;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05) !important;
}

[data-theme="light"] .telemetry-card {
  background: transparent !important;
}

[data-theme="light"] .telemetry-num {
  color: #0284c7 !important;
}

[data-theme="light"] .telemetry-suffix {
  color: #059669 !important;
}

[data-theme="light"] .telemetry-label {
  color: #0f172a !important;
  font-weight: 700 !important;
}

[data-theme="light"] .telemetry-card:not(:last-child)::after {
  background: #e2e8f0 !important;
}

/* Avatar Card */
[data-theme="light"] .hero-avatar-card {
  background: #ffffff !important;
  border: 1.5px solid #e2e8f0 !important;
}

[data-theme="light"] .avatar-img-wrap {
  background: #f1f5f9;
}

[data-theme="light"] .avatar-name {
  color: #0f172a !important;
}

/* Credentials List (Sürücü Belgesi, Askerlik, Konum & Eğitim) */
[data-theme="light"] .cred-item {
  background: #ffffff !important;
  border: 1.5px solid #cbd5e1 !important;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.04) !important;
}

[data-theme="light"] .cred-item:hover {
  border-color: #0284c7 !important;
  box-shadow: 0 4px 14px rgba(2, 132, 199, 0.1) !important;
}

[data-theme="light"] .cred-label {
  color: #64748b !important;
  font-weight: 700 !important;
}

[data-theme="light"] .cred-value {
  color: #0f172a !important;
  font-weight: 700 !important;
}

/* Project Filter Buttons (Unselected & Selected) */
[data-theme="light"] .filter-btn {
  background: #ffffff !important;
  border: 1.5px solid #cbd5e1 !important;
  color: #0f172a !important;
  font-weight: 700 !important;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.04) !important;
}

[data-theme="light"] .filter-btn:hover {
  background: #f1f5f9 !important;
  border-color: #0284c7 !important;
  color: #0284c7 !important;
  box-shadow: 0 2px 10px rgba(2, 132, 199, 0.2) !important;
}

[data-theme="light"] .filter-btn.active {
  background: #0284c7 !important;
  border-color: #0284c7 !important;
  color: #ffffff !important;
  box-shadow: 0 4px 15px rgba(2, 132, 199, 0.35) !important;
}

/* Contact Items (E-Posta, Telefon, Konum) */
[data-theme="light"] .contact-item {
  background: #ffffff !important;
  border: 1.5px solid #cbd5e1 !important;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.04) !important;
}

[data-theme="light"] .contact-item:hover {
  background: #f8fafc !important;
  border-color: #0284c7 !important;
  box-shadow: 0 4px 16px rgba(2, 132, 199, 0.12) !important;
}

[data-theme="light"] .contact-icon {
  background: rgba(2, 132, 199, 0.1) !important;
  border: 1.5px solid #0284c7 !important;
  color: #0284c7 !important;
}

[data-theme="light"] .contact-title {
  color: #64748b !important;
  font-weight: 700 !important;
}

[data-theme="light"] .contact-value {
  color: #0f172a !important;
  font-weight: 700 !important;
}

[data-theme="light"] .copy-action-btn {
  background: #f1f5f9 !important;
  border: 1.5px solid #cbd5e1 !important;
  color: #0284c7 !important;
  font-weight: 700 !important;
}

[data-theme="light"] .copy-action-btn:hover {
  background: #0284c7 !important;
  color: #ffffff !important;
  border-color: #0284c7 !important;
}

/* Quick Contact Form Inputs & Labels */
[data-theme="light"] .form-label {
  color: #0f172a !important;
  font-weight: 700 !important;
}

[data-theme="light"] .form-input {
  background: #ffffff !important;
  border: 1.5px solid #cbd5e1 !important;
  color: #0f172a !important;
  box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.04) !important;
}

[data-theme="light"] .form-input::placeholder {
  color: #94a3b8 !important;
}

[data-theme="light"] .form-input:focus {
  background: #ffffff !important;
  border-color: #0284c7 !important;
  box-shadow: 0 0 0 3px rgba(2, 132, 199, 0.2) !important;
}

/* Project Cards */
[data-theme="light"] .card-media-wrapper {
  background: #f1f5f9 !important;
  border-bottom: 1.5px solid #e2e8f0 !important;
}

[data-theme="light"] .card-title,
[data-theme="light"] .timeline-role,
[data-theme="light"] .skill-category-title {
  color: #0f172a !important;
}

[data-theme="light"] .card-summary,
[data-theme="light"] .hero-desc,
[data-theme="light"] .about-bio-text,
[data-theme="light"] .section-subtitle,
[data-theme="light"] .timeline-bullets li,
[data-theme="light"] .skill-name {
  color: #1e293b !important;
}

[data-theme="light"] .tech-tag {
  background: rgba(2, 132, 199, 0.08) !important;
  border: 1px solid rgba(2, 132, 199, 0.3) !important;
  color: #0369a1 !important;
  font-weight: 600 !important;
}

[data-theme="light"] .tech-tag-more {
  background: #f1f5f9 !important;
  border-color: #cbd5e1 !important;
  color: #475569 !important;
}

[data-theme="light"] .cyber-badge-sm {
  background: #ffffff !important;
  border: 1px solid var(--neon-cyan) !important;
  color: var(--neon-cyan) !important;
}

[data-theme="light"] .status-indicator-sm {
  background: #ffffff !important;
  border: 1px solid var(--neon-green) !important;
  color: var(--neon-green) !important;
}

[data-theme="light"] .main-footer {
  background: #e2e8f0 !important;
  color: #475569 !important;
  border-top: 1px solid #cbd5e1 !important;
}

/* Modal in Light Mode */
[data-theme="light"] .modal-dialog {
  background: #ffffff !important;
  border: 1.5px solid var(--neon-cyan) !important;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.2), 0 0 35px var(--neon-cyan-glow) !important;
}

[data-theme="light"] .modal-header {
  background: #f8fafc !important;
  border-bottom: 1.5px solid #e2e8f0 !important;
}

[data-theme="light"] .modal-title {
  color: #0f172a !important;
}

[data-theme="light"] .modal-section-card {
  background: #f8fafc !important;
  border: 1.5px solid #e2e8f0 !important;
}

[data-theme="light"] .modal-desc-text,
[data-theme="light"] .spec-list li {
  color: #1e293b !important;
}

[data-theme="light"] .modal-role-box {
  background: rgba(2, 132, 199, 0.08) !important;
  border-left-color: var(--neon-cyan) !important;
  color: #0f172a !important;
}

[data-theme="light"] .modal-gallery-wrap {
  background: #f1f5f9 !important;
  border: 1.5px solid #cbd5e1 !important;
}

[data-theme="light"] .gallery-stage {
  background: radial-gradient(circle at center, #ffffff 0%, #e2e8f0 100%) !important;
}

[data-theme="light"] .gallery-caption-bar {
  background: #f8fafc !important;
  border-top: 1px solid #e2e8f0 !important;
  color: #334155 !important;
}

[data-theme="light"] .gallery-thumbs-row {
  background: #f8fafc !important;
  border-top: 1px solid #e2e8f0 !important;
}

[data-theme="light"] .gallery-nav-btn {
  background: rgba(255, 255, 255, 0.95) !important;
  color: var(--neon-cyan) !important;
  border: 1.5px solid var(--border-bright) !important;
}

[data-theme="light"] .modal-uploader-panel {
  background: #f8fafc !important;
  border: 1.5px dashed var(--neon-cyan) !important;
}

[data-theme="light"] .custom-notes-textarea {
  background: #ffffff !important;
  border: 1.5px solid #cbd5e1 !important;
  color: #0f172a !important;
}

[data-theme="light"] .custom-notes-display-box {
  background: rgba(5, 150, 105, 0.06) !important;
  border: 1px solid rgba(5, 150, 105, 0.25) !important;
}

[data-theme="light"] .custom-notes-text {
  color: #0f172a !important;
}

/* ==========================================================================
   PRINT / PDF GENERATION STYLES (window.print)
   Clean, Professional 2-Page CV Printout
   ========================================================================== */
@media print {
  body {
    background: #ffffff !important;
    color: #111827 !important;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif !important;
    font-size: 11pt !important;
  }

  #circuitCanvas,
  .scanline-overlay,
  .main-header,
  .main-footer,
  .hero-actions,
  .projects-filter-bar,
  .view-details-btn,
  .change-avatar-btn,
  .copy-action-btn,
  .mobile-menu-toggle,
  .cyber-toast {
    display: none !important;
  }

  .section {
    padding: 20px 0 !important;
    page-break-inside: avoid;
  }

  .cyber-panel {
    background: #ffffff !important;
    border: 1px solid #e2e8f0 !important;
    box-shadow: none !important;
    color: #1e293b !important;
  }

  .section-title {
    color: #0f172a !important;
    -webkit-text-fill-color: #0f172a !important;
    font-size: 18pt !important;
    border-bottom: 2px solid #0284c7 !important;
    padding-bottom: 4px;
    margin-bottom: 14px !important;
  }

  .timeline-wrap::before {
    background: #0284c7 !important;
  }

  .marker-dot {
    background: #0284c7 !important;
  }

  .skill-progress-fill {
    background: #0284c7 !important;
  }

  .tech-tag {
    border: 1px solid #cbd5e1 !important;
    color: #0f172a !important;
    background: #f8fafc !important;
  }
}