/* ==========================================================================
   DESIGN SYSTEM - APPLE UX & CUPERTINO SPECIFICATIONS
   Proje: Çağrı Özpınar - The Last YKS Survivor
   ========================================================================== */

/* Fonts are preconnected and loaded asynchronously in index.html for high performance */

:root {
  /* Apple Dark Architecture */
  --bg-base: #000000;
  --bg-secondary: #0a0a0c;
  --bg-tertiary: #141418;
  
  /* Glassmorphism & Translucency */
  --glass-bg: rgba(22, 22, 27, 0.65);
  --glass-bg-hover: rgba(32, 32, 40, 0.8);
  --glass-bg-active: rgba(42, 42, 54, 0.9);
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-border-light: rgba(255, 255, 255, 0.16);
  --glass-highlight: inset 0 1px 0 rgba(255, 255, 255, 0.12);
  --glass-blur: blur(28px) saturate(190%);

  /* Apple Dynamic Palette */
  --apple-blue: #0A84FF;
  --apple-cyan: #64D2FF;
  --apple-indigo: #5E5CE6;
  --apple-purple: #BF5AF2;
  --apple-pink: #FF375F;
  --apple-red: #FF453A;
  --apple-orange: #FF9F0A;
  --apple-yellow: #FFD60A;
  --apple-green: #30D158;
  --apple-mint: #63E6E2;
  --apple-teal: #40C8E0;

  /* Typography Colors */
  --text-primary: #FFFFFF;
  --text-secondary: rgba(255, 255, 255, 0.72);
  --text-tertiary: rgba(255, 255, 255, 0.45);
  --text-quaternary: rgba(255, 255, 255, 0.25);

  /* Gradients */
  --aurora-gradient: linear-gradient(135deg, #0A84FF 0%, #BF5AF2 50%, #FF375F 100%);
  --gold-cartel-gradient: linear-gradient(135deg, #FFD60A 0%, #FF9F0A 50%, #FF453A 100%);
  --cyber-mesh: radial-gradient(at 0% 0%, rgba(10, 132, 255, 0.15) 0px, transparent 50%),
                      radial-gradient(at 100% 0%, rgba(191, 90, 242, 0.15) 0px, transparent 50%),
                      radial-gradient(at 50% 100%, rgba(255, 55, 95, 0.1) 0px, transparent 50%);

  /* Spatial Shadows */
  --shadow-subtle: 0 4px 20px rgba(0, 0, 0, 0.4);
  --shadow-elevation: 0 12px 40px rgba(0, 0, 0, 0.6), 0 0 0 1px rgba(255, 255, 255, 0.08);
  --shadow-dynamic: 0 20px 60px -15px rgba(0, 0, 0, 0.8);
  --glow-blue: 0 0 35px rgba(10, 132, 255, 0.35);
  --glow-purple: 0 0 35px rgba(191, 90, 242, 0.35);

  /* Apple Curve Physics */
  --spring-easing: cubic-bezier(0.16, 1, 0.3, 1);
  --spring-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);
  --transition-fast: 0.18s var(--spring-easing);
  --transition-normal: 0.35s var(--spring-easing);
  --transition-slow: 0.6s var(--spring-easing);

  /* Border Radii */
  --radius-xs: 8px;
  --radius-sm: 12px;
  --radius-md: 18px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --radius-pill: 9999px;

  /* Typography */
  --font-sans: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Inter", sans-serif;
  --font-mono: "JetBrains Mono", SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

/* Base Reset */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

html {
  font-family: var(--font-sans);
  background-color: var(--bg-base);
  color: var(--text-primary);
  scroll-behavior: smooth;
  font-size: 16px;
  overflow-x: hidden;
}

body {
  min-height: 100vh;
  position: relative;
  background-color: var(--bg-base);
  background-image: var(--cyber-mesh);
  background-attachment: fixed;
  overflow-x: hidden;
  line-height: 1.5;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-track {
  background: var(--bg-base);
}
::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-pill);
}
::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.35);
}

/* Apple Typography Classes */
.text-display {
  font-size: clamp(2.5rem, 6vw, 4.75rem);
  font-weight: 800;
  letter-spacing: -0.035em;
  line-height: 1.05;
}

.text-title-1 {
  font-size: clamp(1.8rem, 3.5vw, 2.75rem);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.2;
}

.text-title-2 {
  font-size: clamp(1.35rem, 2.2vw, 1.85rem);
  font-weight: 600;
  letter-spacing: -0.02em;
}

.text-headline {
  font-size: 1.15rem;
  font-weight: 600;
  letter-spacing: -0.015em;
}

.text-body {
  font-size: 1rem;
  font-weight: 400;
  color: var(--text-secondary);
  line-height: 1.6;
}

.text-caption {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-tertiary);
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.text-mono {
  font-family: var(--font-mono);
}

/* Gradient Text Effect */
.gradient-text {
  background: var(--aurora-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.gradient-gold {
  background: var(--gold-cartel-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

/* Apple Glass Card Utility */
.apple-card {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-highlight), var(--shadow-subtle);
  border-radius: var(--radius-lg);
  transition: transform var(--transition-normal), 
              border-color var(--transition-normal), 
              box-shadow var(--transition-normal),
              background var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.apple-card:hover {
  border-color: var(--glass-border-light);
  box-shadow: var(--glass-highlight), var(--shadow-elevation);
}

.apple-card-interactive {
  cursor: pointer;
}
.apple-card-interactive:hover {
  transform: translateY(-4px) scale(1.01);
}
.apple-card-interactive:active {
  transform: translateY(-1px) scale(0.99);
}

/* Apple Pill Badge */
.apple-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  font-size: 0.82rem;
  font-weight: 600;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(10px);
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}
.apple-pill.blue {
  color: var(--apple-cyan);
  background: rgba(10, 132, 255, 0.15);
  border-color: rgba(10, 132, 255, 0.3);
}
.apple-pill.red {
  color: #ff7066;
  background: rgba(255, 69, 58, 0.15);
  border-color: rgba(255, 69, 58, 0.3);
}
.apple-pill.yellow {
  color: var(--apple-yellow);
  background: rgba(255, 214, 10, 0.15);
  border-color: rgba(255, 214, 10, 0.3);
}

/* Apple Primary Button */
.apple-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 13px 26px;
  border-radius: var(--radius-pill);
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: all var(--transition-normal);
  font-family: var(--font-sans);
}

.apple-btn-primary {
  background: #ffffff;
  color: #000000;
  box-shadow: 0 4px 20px rgba(255, 255, 255, 0.25);
}
.apple-btn-primary:hover {
  background: #f0f0f5;
  transform: scale(1.03);
  box-shadow: 0 6px 28px rgba(255, 255, 255, 0.4);
}
.apple-btn-primary:active {
  transform: scale(0.97);
}

.apple-btn-glass {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border-light);
  color: var(--text-primary);
}
.apple-btn-glass:hover {
  background: var(--glass-bg-hover);
  border-color: rgba(255, 255, 255, 0.3);
  transform: scale(1.03);
}
.apple-btn-glass:active {
  transform: scale(0.97);
}

.apple-btn-danger {
  background: var(--apple-red);
  color: white;
  box-shadow: 0 4px 20px rgba(255, 69, 58, 0.35);
}
.apple-btn-danger:hover {
  background: #ff5449;
  transform: scale(1.03);
}

/* Container */
.container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
}

@media (max-width: 768px) {
  :root {
    --glass-blur: blur(12px);
    --glass-bg: rgba(18, 18, 23, 0.85);
    --glass-bg-hover: rgba(26, 26, 34, 0.92);
    --shadow-elevation: 0 6px 20px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(255, 255, 255, 0.08);
    --shadow-dynamic: 0 10px 30px -10px rgba(0, 0, 0, 0.7);
    --cyber-mesh: radial-gradient(at 0% 0%, rgba(10, 132, 255, 0.1) 0px, transparent 60%);
  }

  .container {
    padding: 0 16px;
  }
}