/* ============================================
   Design Tokens — Doç. Dr. Hakan Kına
   Cyber Blue Theme — Logo Aligned
   ============================================ */

:root {
  /* ── Brand Colors (Logo-aligned deep blue → bright blue) ── */
  --color-primary: #0A2463;
  --color-primary-light: #1E3A7A;
  --color-primary-lighter: #3B5998;
  --color-primary-dark: #061539;
  --color-primary-darker: #030C20;

  /* ── Accent (Cyber Electric Blue) ── */
  --color-accent: #00B4D8;
  --color-accent-light: #48CAE4;
  --color-accent-dark: #0096C7;
  --color-accent-glow: rgba(0, 180, 216, 0.4);

  /* ── Secondary Accent (Bright Blue from Logo) ── */
  --color-secondary: #1565C0;
  --color-secondary-light: #42A5F5;
  --color-secondary-dark: #0D47A1;

  /* ── Backgrounds ── */
  --color-bg: #F8FAFC;
  --color-bg-alt: #EEF2F7;
  --color-surface: #FFFFFF;
  --color-surface-glass: rgba(255, 255, 255, 0.72);
  --color-bg-dark: #030C20;
  --color-bg-dark-alt: #0A1628;

  /* ── Text ── */
  --color-text: #0F172A;
  --color-text-secondary: #334155;
  --color-text-muted: #64748B;
  --color-text-light: #94A3B8;
  --color-text-on-primary: #FFFFFF;
  --color-text-on-dark: #E2E8F0;

  /* ── Functional ── */
  --color-whatsapp: #1A8D4E;
  --color-whatsapp-hover: #20A85E;
  --color-border: #E2E8F0;
  --color-border-light: #F1F5F9;
  --color-overlay: rgba(3, 12, 32, 0.85);

  /* ── Gradients ── */
  --gradient-hero: linear-gradient(135deg, #030C20 0%, #0A2463 40%, #061539 100%);
  --gradient-hero-overlay: linear-gradient(135deg, rgba(10, 36, 99, 0.92) 0%, rgba(3, 12, 32, 0.88) 100%);
  --gradient-accent: linear-gradient(135deg, #00B4D8 0%, #0096C7 50%, #1565C0 100%);
  --gradient-card: linear-gradient(145deg, #FFFFFF 0%, #F0F4F8 100%);
  --gradient-dark: linear-gradient(135deg, #0F172A 0%, #030C20 100%);
  --gradient-cyber: linear-gradient(135deg, #0A2463 0%, #1565C0 50%, #00B4D8 100%);
  --gradient-glow: linear-gradient(135deg, rgba(0, 180, 216, 0.15) 0%, rgba(21, 101, 192, 0.1) 50%, rgba(10, 36, 99, 0.05) 100%);
  --gradient-text: linear-gradient(135deg, #00B4D8 0%, #42A5F5 50%, #1565C0 100%);

  /* ── Typography ── */
  --font-primary: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-arabic: 'Noto Sans Arabic', 'Outfit', sans-serif;

  --fs-display: clamp(2.5rem, 5vw, 4rem);
  --fs-h1: clamp(2rem, 4vw, 3rem);
  --fs-h2: clamp(1.75rem, 3vw, 2.5rem);
  --fs-h3: clamp(1.25rem, 2vw, 1.5rem);
  --fs-h4: clamp(1.1rem, 1.5vw, 1.25rem);
  --fs-body: 1rem;
  --fs-body-lg: 1.125rem;
  --fs-small: 0.875rem;
  --fs-xs: 0.75rem;

  --fw-regular: 400;
  --fw-medium: 500;
  --fw-semibold: 600;
  --fw-bold: 700;

  --lh-tight: 1.2;
  --lh-normal: 1.6;
  --lh-relaxed: 1.8;

  /* ── Spacing ── */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;
  --space-section: clamp(4rem, 8vw, 7rem);

  /* ── Border Radius ── */
  --radius-sm: 0.375rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-full: 9999px;

  /* ── Shadows ── */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08), 0 2px 4px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.1), 0 4px 8px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 50px rgba(0, 0, 0, 0.12), 0 8px 16px rgba(0, 0, 0, 0.06);
  --shadow-glow: 0 0 30px rgba(0, 180, 216, 0.2);
  --shadow-glow-lg: 0 0 60px rgba(0, 180, 216, 0.15), 0 0 30px rgba(21, 101, 192, 0.1);
  --shadow-card-hover: 0 12px 40px rgba(10, 36, 99, 0.12), 0 4px 12px rgba(0, 0, 0, 0.06);
  --shadow-cyber: 0 0 20px rgba(0, 180, 216, 0.25), 0 4px 12px rgba(0, 0, 0, 0.1);

  /* ── Transitions ── */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;
  --transition-spring: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);

  /* ── Z-Index Layers ── */
  --z-base: 1;
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-navbar: 500;
  --z-overlay: 600;
  --z-modal: 700;
  --z-whatsapp: 800;
  --z-toast: 900;

  /* ── Layout ── */
  --container-max: 1200px;
  --container-narrow: 900px;
  --navbar-height: 72px;
}