/* ==========================================================================
   3DLab Mühendislik & İmalat - Core Design System & Tokens
   Designed with Apple-level Precision & Baromak Industrial Visual Language
   ========================================================================== */

:root {
  /* Color Palette - Premium Dark by default */
  --bg-primary: #07090e;
  --bg-secondary: #0d121c;
  --bg-tertiary: #131a28;
  --bg-card: rgba(19, 26, 40, 0.65);
  --bg-card-hover: rgba(26, 36, 56, 0.85);
  --bg-glass: rgba(13, 18, 28, 0.75);
  --bg-glass-nav: rgba(7, 9, 14, 0.85);

  /* Text & Contrast */
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --text-inverse: #07090e;

  /* High-Tech Accents */
  --accent-cyan: #00d2ff;
  --accent-cyan-light: #5ce1e6;
  --accent-cyan-glow: rgba(0, 210, 255, 0.35);
  
  --accent-orange: #ff5e1a;
  --accent-orange-light: #ff7d3b;
  --accent-orange-glow: rgba(255, 94, 26, 0.35);

  --accent-emerald: #10b981;
  --accent-emerald-glow: rgba(16, 185, 129, 0.35);

  --accent-gradient-primary: linear-gradient(135deg, #00d2ff 0%, #0066ff 100%);
  --accent-gradient-orange: linear-gradient(135deg, #ff5e1a 0%, #ff9500 100%);
  --accent-gradient-tech: linear-gradient(135deg, #00d2ff 0%, #ff5e1a 100%);

  /* Borders & Shadows */
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-medium: rgba(255, 255, 255, 0.14);
  --border-glow: rgba(0, 210, 255, 0.4);
  --border-radius-sm: 8px;
  --border-radius-md: 14px;
  --border-radius-lg: 20px;
  --border-radius-xl: 28px;
  --border-radius-full: 9999px;

  --shadow-subtle: 0 4px 20px rgba(0, 0, 0, 0.25);
  --shadow-card: 0 10px 30px -5px rgba(0, 0, 0, 0.45), 0 0 1px 1px rgba(255, 255, 255, 0.05);
  --shadow-glow-cyan: 0 0 35px rgba(0, 210, 255, 0.25);
  --shadow-glow-orange: 0 0 35px rgba(255, 94, 26, 0.25);

  /* Typography */
  --font-sans: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Inter", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: "SF Mono", "Fira Code", Menlo, Monaco, Consolas, monospace;

  /* Transitions & Animation Easing */
  --ease-apple: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);
  --transition-fast: 0.2s var(--ease-apple);
  --transition-normal: 0.35s var(--ease-apple);
  --transition-slow: 0.6s var(--ease-apple);

  /* Layout */
  --container-max: 1440px;
  --header-height: 80px;

  /* Dynamic scroll ambient glow */
  --dynamic-bg-glow-x: 50%;
  --dynamic-bg-glow-y: 20%;
  --dynamic-bg-glow-color: rgba(0, 210, 255, 0.07);
}

/* ==========================================================================
   Refined Light Theme - Anti-Glare & High-Contrast Typography
   ========================================================================== */
[data-theme="light"] {
  --bg-primary: #f8fafc;
  --bg-secondary: #ffffff;
  --bg-tertiary: #f1f5f9;
  --bg-card: #ffffff;
  --bg-card-hover: #ffffff;
  --bg-glass: rgba(248, 250, 252, 0.92);
  --bg-glass-nav: rgba(255, 255, 255, 0.95);

  --text-primary: #0f172a;
  --text-secondary: #334155;
  --text-muted: #64748b;
  --text-inverse: #ffffff;

  --border-subtle: #e2e8f0;
  --border-medium: #cbd5e1;
  --border-glow: rgba(0, 102, 255, 0.35);

  --shadow-subtle: 0 4px 15px rgba(15, 23, 42, 0.04);
  --shadow-card: 0 4px 20px -2px rgba(15, 23, 42, 0.06), 0 0 1px 1px rgba(15, 23, 42, 0.04);
  --shadow-glow-cyan: 0 4px 20px rgba(0, 102, 255, 0.12);
  --shadow-glow-orange: 0 4px 20px rgba(255, 94, 26, 0.12);

  --dynamic-bg-glow-color: rgba(0, 102, 255, 0.03);
}

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

html {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
  max-width: 100vw;
  width: 100%;
}

body {
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
  max-width: 100vw;
  width: 100%;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

/* Ambient Canvas */
.ambient-scroll-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
  z-index: 0;
  background: 
    radial-gradient(circle 800px at var(--dynamic-bg-glow-x) var(--dynamic-bg-glow-y), var(--dynamic-bg-glow-color), transparent 70%),
    radial-gradient(circle 600px at calc(100% - var(--dynamic-bg-glow-x)) calc(100% - var(--dynamic-bg-glow-y)), rgba(255, 94, 26, 0.04), transparent 60%);
  transition: background 0.5s ease-out;
}

.tactile-noise-layer {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
  opacity: 0.02;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-sans);
  color: var(--text-primary);
  font-weight: 700;
  line-height: 1.18;
  letter-spacing: -0.025em;
}

h1 {
  font-size: clamp(2.4rem, 4.5vw + 1rem, 4.8rem);
  font-weight: 800;
  letter-spacing: -0.035em;
}

h2 {
  font-size: clamp(1.8rem, 3vw + 0.5rem, 3.2rem);
  letter-spacing: -0.03em;
}

h3 {
  font-size: clamp(1.3rem, 1.8vw + 0.3rem, 2rem);
}

p {
  color: var(--text-secondary);
  font-size: clamp(1rem, 0.95rem + 0.25vw, 1.15rem);
  font-weight: 400;
}

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

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

/* Containers */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: clamp(1rem, 4vw, 2.5rem);
  padding-right: clamp(1rem, 4vw, 2.5rem);
  position: relative;
  z-index: 2;
}

/* Wide Container for Generous Article Layout */
.container-wide {
  width: 100%;
  max-width: 1380px;
  margin-left: auto;
  margin-right: auto;
  padding-left: clamp(1rem, 4vw, 2.5rem);
  padding-right: clamp(1rem, 4vw, 2.5rem);
  position: relative;
  z-index: 2;
}

.section {
  padding-top: clamp(2.7rem, 4.8vw, 5.1rem);
  padding-bottom: clamp(2.7rem, 4.8vw, 5.1rem);
  position: relative;
  z-index: 2;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.95rem;
  background: rgba(0, 210, 255, 0.08);
  border: 1px solid rgba(0, 210, 255, 0.2);
  border-radius: var(--border-radius-full);
  color: var(--accent-cyan);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 1.25rem;
  backdrop-filter: blur(10px);
}

[data-theme="light"] .section-tag {
  background: rgba(0, 102, 255, 0.08);
  border-color: rgba(0, 102, 255, 0.2);
  color: #0284c7;
}

.section-tag.orange {
  background: rgba(255, 94, 26, 0.08);
  border-color: rgba(255, 94, 26, 0.2);
  color: var(--accent-orange);
}

.section-header {
  text-align: center;
  max-width: 860px;
  margin: 0 auto clamp(1.6rem, 3.2vw, 2.8rem) auto;
}

.section-header.left-aligned {
  text-align: left;
  margin-left: 0;
}

.section-title {
  margin-bottom: 1.2rem;
}

.section-subtitle {
  font-size: clamp(1.05rem, 1.2vw, 1.25rem);
  line-height: 1.6;
}

/* Gradients */
.gradient-text-cyan {
  background: linear-gradient(135deg, #ffffff 10%, #00d2ff 80%, #0066ff 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.gradient-text-orange {
  background: linear-gradient(135deg, #ffffff 10%, #ff5e1a 80%, #ff9500 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

[data-theme="light"] .gradient-text-cyan {
  background: linear-gradient(135deg, #0f172a 10%, #0284c7 70%, #0369a1 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

[data-theme="light"] .gradient-text-orange {
  background: linear-gradient(135deg, #0f172a 10%, #ea580c 70%, #c2410c 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Glassmorphic & Modern Cards */
.glass-card {
  background: var(--bg-card);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--border-radius-lg);
  padding: clamp(1.5rem, 2.5vw, 2.5rem);
  box-shadow: var(--shadow-card);
  transition: transform var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.glass-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-medium);
  box-shadow: var(--shadow-card), var(--shadow-glow-cyan);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.65rem;
  padding: 0.85rem 1.85rem;
  border-radius: var(--border-radius-full);
  font-size: 0.98rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  cursor: pointer;
  border: none;
  outline: none;
  transition: all var(--transition-normal);
  white-space: nowrap;
  position: relative;
  overflow: hidden;
  text-decoration: none;
}

.btn-primary {
  background: var(--accent-gradient-primary);
  color: #ffffff;
  box-shadow: 0 4px 20px rgba(0, 210, 255, 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0, 210, 255, 0.55);
}

.btn-orange {
  background: var(--accent-gradient-orange);
  color: #ffffff;
  box-shadow: 0 4px 20px rgba(255, 94, 26, 0.35);
}

.btn-orange:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(255, 94, 26, 0.55);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
  border: 1px solid var(--border-medium);
  backdrop-filter: blur(12px);
}

[data-theme="light"] .btn-secondary {
  background: #ffffff;
  color: #0f172a;
  border-color: #cbd5e1;
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.25);
  transform: translateY(-2px);
}

[data-theme="light"] .btn-secondary:hover {
  background: #f1f5f9;
  border-color: #94a3b8;
}

.btn-sm {
  padding: 0.55rem 1.25rem;
  font-size: 0.88rem;
}

.btn-lg {
  padding: 1.1rem 2.4rem;
  font-size: 1.08rem;
}

/* Pulsing Beacon */
.status-beacon {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--accent-emerald);
}

.beacon-dot {
  width: 8px;
  height: 8px;
  background-color: var(--accent-emerald);
  border-radius: 50%;
  position: relative;
}

.beacon-dot::after {
  content: '';
  position: absolute;
  top: -4px;
  left: -4px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background-color: var(--accent-emerald);
  opacity: 0.4;
  animation: pulseBeacon 2s infinite;
}

@keyframes pulseBeacon {
  0% { transform: scale(0.6); opacity: 0.8; }
  100% { transform: scale(2.2); opacity: 0; }
}