/* ==========================================================================
   DESIGN TOKENS — Alkosar Online Quran Academy
   Single source of truth for the entire design system.
   ========================================================================== */

:root {
  /* ── Color Palette ─────────────────────────────────────────────────────── */

  /* Primary — #009B58 Vibrant Islamic Emerald Green */
  --color-primary: #023d24;
  /* hsl(154, 100%, 30.4%) */
  --color-primary-light: #023d24;
  /* hsl(154, 100%, 36%) */
  --color-primary-lighter: #023d24;
  /* hsl(154, 85%, 44%) */
  --color-primary-dark: #023d24;
  /* deep green */
  --color-primary-darkest: #023d24;
  /* near-black green */

  /* Secondary — #ffb600 Warm Amber Gold / Orange */
  --color-secondary: #ffb600;
  /* hsl(43, 100%, 50%) */
  --color-secondary-light: #ffd366;
  /* hsl(43, 100%, 70%) */
  --color-secondary-lighter: #fff2cc;
  /* soft gold tint */
  --color-secondary-dark: #cc9200;
  /* accessible high contrast gold */
  --color-accent: #ffb600;

  /* Aliases for legacy and component compatibility */
  --color-gold: #ffb600;
  --color-gold-light: #ffd366;
  --color-gold-dark: #cc9200;
  --color-text-primary: hsl(0, 0%, 8%);
  --color-bg-card: #ffffff;
  --color-text-muted: hsl(218, 11%, 36%);

  /* Neutrals */
  --color-bg-primary: hsl(45, 20%, 97%);
  /* #FAFAF7 warm white */
  --color-bg-secondary: hsl(40, 18%, 93%);
  /* #F0EDE6 */
  --color-bg-tertiary: hsl(40, 12%, 88%);
  /* subtle cards */
  --color-bg-dark: hsl(155, 30%, 8%);
  /* #0F1A14 */
  --color-bg-dark-lighter: hsl(155, 20%, 14%);
  /* dark card */

  /* Text */
  --color-text: hsl(0, 0%, 8%);
  /* #141414 near-black */
  --color-text-secondary: hsl(218, 11%, 30%);
  /* #404B5A darker grey */
  --color-text-light: hsl(218, 11%, 42%);
  /* #5A6475 medium grey */
  --color-text-white: hsl(45, 20%, 97%);
  /* #FAFAF7 */
  --color-text-on-primary: hsl(45, 20%, 97%);
  --color-text-on-dark: hsl(40, 18%, 95%);

  /* Borders */
  --color-border: hsl(37, 14%, 88%);
  /* #E5E2DB */
  --color-border-light: hsl(37, 14%, 93%);
  --color-border-dark: hsl(155, 20%, 25%);

  /* Feedback */
  --color-success: hsl(160, 84%, 39%);
  /* #10B981 */
  --color-error: hsl(0, 84%, 60%);
  /* #EF4444 */
  --color-warning: hsl(38, 92%, 50%);
  /* #F59E0B */
  --color-info: hsl(199, 89%, 48%);
  /* #0EA5E9 */

  /* Overlay */
  --color-overlay: hsla(155, 30%, 8%, 0.7);
  --color-overlay-light: hsla(155, 30%, 8%, 0.4);

  /* ── Typography ────────────────────────────────────────────────────────── */

  --font-heading: 'Lora', Georgia, 'Times New Roman', serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-quran: 'Amiri Quran', 'Traditional Arabic', serif;

  /* Font sizes — fluid type scale (clamp: min, preferred, max) */
  --text-xs: clamp(0.6875rem, 0.65rem + 0.15vw, 0.75rem);
  /* 11-12px */
  --text-sm: clamp(0.8125rem, 0.78rem + 0.15vw, 0.875rem);
  /* 13-14px */
  --text-base: clamp(0.9375rem, 0.9rem + 0.2vw, 1rem);
  /* 15-16px */
  --text-md: clamp(1.0625rem, 1rem + 0.25vw, 1.125rem);
  /* 17-18px */
  --text-lg: clamp(1.125rem, 1.05rem + 0.35vw, 1.25rem);
  /* 18-20px */
  --text-xl: clamp(1.25rem, 1.15rem + 0.5vw, 1.5rem);
  /* 20-24px */
  --text-2xl: clamp(1.5rem, 1.3rem + 0.8vw, 1.875rem);
  /* 24-30px */
  --text-3xl: clamp(1.875rem, 1.6rem + 1.1vw, 2.5rem);
  /* 30-40px */
  --text-4xl: clamp(2.25rem, 1.8rem + 1.8vw, 3.25rem);
  /* 36-52px */
  --text-5xl: clamp(2.75rem, 2.1rem + 2.5vw, 4rem);
  /* 44-64px */

  /* Font weights */
  --weight-light: 300;
  --weight-regular: 400;
  --weight-medium: 500;
  --weight-semibold: 600;
  --weight-bold: 700;
  --weight-extrabold: 800;

  /* Line heights */
  --leading-none: 1;
  --leading-tight: 1.2;
  --leading-snug: 1.35;
  --leading-normal: 1.6;
  --leading-relaxed: 1.75;
  --leading-loose: 2;

  /* Letter spacing */
  --tracking-tight: -0.02em;
  --tracking-normal: 0;
  --tracking-wide: 0.02em;
  --tracking-wider: 0.05em;
  --tracking-widest: 0.1em;

  /* ── Spacing ───────────────────────────────────────────────────────────── */
  /* 8-point grid system */

  --space-1: 0.25rem;
  /* 4px  */
  --space-2: 0.5rem;
  /* 8px  */
  --space-3: 0.75rem;
  /* 12px */
  --space-4: 1rem;
  /* 16px */
  --space-5: 1.25rem;
  /* 20px */
  --space-6: 1.5rem;
  /* 24px */
  --space-8: 2rem;
  /* 32px */
  --space-10: 2.5rem;
  /* 40px */
  --space-12: 3rem;
  /* 48px */
  --space-16: 4rem;
  /* 64px */
  --space-20: 5rem;
  /* 80px */
  --space-24: 6rem;
  /* 96px */
  --space-32: 8rem;
  /* 128px */

  /* Section spacing — optimized to decrease bloated whitespace */
  --section-padding-y: clamp(2rem, 3.5vw, 3.5rem);
  --section-padding-x: clamp(1rem, 2.5vw, 1.75rem);

  /* ── Layout ────────────────────────────────────────────────────────────── */

  --container-max: 1280px;
  --container-narrow: 960px;
  --container-wide: 1440px;
  --container-text: 780px;
  --container-padding: clamp(1rem, 3vw, 2rem);

  /* ── Border Radius ─────────────────────────────────────────────────────── */

  --radius-sm: 0.375rem;
  /* 6px  */
  --radius-md: 0.5rem;
  /* 8px  */
  --radius-lg: 0.75rem;
  /* 12px */
  --radius-xl: 1rem;
  /* 16px */
  --radius-2xl: 1.5rem;
  /* 24px */
  --radius-full: 9999px;

  /* ── Shadows ───────────────────────────────────────────────────────────── */

  --shadow-xs: 0 1px 2px hsla(0, 0%, 0%, 0.05);
  --shadow-sm: 0 1px 3px hsla(0, 0%, 0%, 0.08), 0 1px 2px hsla(0, 0%, 0%, 0.04);
  --shadow-md: 0 4px 6px hsla(0, 0%, 0%, 0.07), 0 2px 4px hsla(0, 0%, 0%, 0.04);
  --shadow-lg: 0 10px 15px hsla(0, 0%, 0%, 0.08), 0 4px 6px hsla(0, 0%, 0%, 0.04);
  --shadow-xl: 0 20px 25px hsla(0, 0%, 0%, 0.1), 0 8px 10px hsla(0, 0%, 0%, 0.04);
  --shadow-2xl: 0 25px 50px hsla(0, 0%, 0%, 0.15);
  --shadow-inner: inset 0 2px 4px hsla(0, 0%, 0%, 0.06);

  /* Colored shadows */
  --shadow-primary: 0 4px 14px hsla(157, 45%, 20%, 0.25);
  --shadow-secondary: 0 4px 14px hsla(38, 45%, 60%, 0.25);
  --shadow-card: 0 2px 12px hsla(0, 0%, 0%, 0.06), 0 0 1px hsla(0, 0%, 0%, 0.08);
  --shadow-card-hover: 0 12px 28px hsla(0, 0%, 0%, 0.1), 0 4px 10px hsla(0, 0%, 0%, 0.05);

  /* ── Transitions ───────────────────────────────────────────────────────── */

  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);

  --duration-fast: 150ms;
  --duration-normal: 300ms;
  --duration-slow: 500ms;
  --duration-slower: 800ms;

  --transition-base: all var(--duration-normal) var(--ease-out);
  --transition-fast: all var(--duration-fast) var(--ease-out);
  --transition-color: color var(--duration-fast) var(--ease-out),
    background-color var(--duration-fast) var(--ease-out),
    border-color var(--duration-fast) var(--ease-out);
  --transition-shadow: box-shadow var(--duration-normal) var(--ease-out);
  --transition-transform: transform var(--duration-normal) var(--ease-out);

  /* ── Z-index scale ─────────────────────────────────────────────────────── */

  --z-dropdown: 100;
  --z-sticky: 200;
  --z-overlay: 300;
  --z-modal: 400;
  --z-toast: 500;
}