/* ============================================================================
   Fijara Platform - CSS Variables & Theme Configuration
   ============================================================================
   This file defines all CSS custom properties used throughout the platform.
   All colors, fonts, spacing, and other design tokens are defined here.
   
   IMPORTANT: This is the single source of truth for theming.
   DO NOT hardcode colors, fonts, or spacing values elsewhere.
   ============================================================================ */

/* ============================================================================
   ROOT VARIABLES - Default Theme (Brand Blue)
   ============================================================================ */
:root {
  /* ------------------------------------------------------------------------
     Brand Colors
     ------------------------------------------------------------------------ */
  --color-primary: #4379ff;
  --color-primary-light: #6b94ff;
  --color-primary-lighter: #93afff;
  --color-primary-dark: #2b5fe0;
  --color-primary-darker: #1a4ac7;

  /* Secondary/Accent Colors */
  --color-secondary: #1cc6ff;
  --color-secondary-light: #4dd4ff;
  --color-secondary-dark: #0aadd9;

  /* Accent Colors */
  --color-accent-cyan: #1cc6ff;
  --color-accent-mint: #97fbd1;
  --color-accent-pink: #f6a4ec;
  --color-accent-cyan-light: #7de4ff;
  --color-accent-mint-light: #c5fde6;
  --color-accent-pink-light: #fad4f5;

  /* ------------------------------------------------------------------------
     Semantic Colors
     ------------------------------------------------------------------------ */
  --color-success: #10b981;
  --color-success-light: #34d399;
  --color-success-dark: #059669;
  --color-success-bg: #ecfdf5;

  --color-warning: #f59e0b;
  --color-warning-light: #fbbf24;
  --color-warning-dark: #d97706;
  --color-warning-bg: #fffbeb;

  --color-error: #ef4444;
  --color-error-light: #f87171;
  --color-error-dark: #dc2626;
  --color-error-bg: #fef2f2;

  --color-info: #3b82f6;
  --color-info-light: #60a5fa;
  --color-info-dark: #2563eb;
  --color-info-bg: #eff6ff;

  /* ------------------------------------------------------------------------
     Neutral Colors
     ------------------------------------------------------------------------ */
  --color-white: #ffffff;
  --color-black: #000000;

  --color-gray-50: #f9fafb;
  --color-gray-100: #f3f4f6;
  --color-gray-200: #e5e7eb;
  --color-gray-300: #d1d5db;
  --color-gray-400: #9ca3af;
  --color-gray-500: #6b7280;
  --color-gray-600: #4b5563;
  --color-gray-700: #374151;
  --color-gray-800: #1f2937;
  --color-gray-900: #111827;
  --color-gray-950: #030712;

  /* ------------------------------------------------------------------------
     Background Colors
     ------------------------------------------------------------------------ */
  --bg-body: var(--color-white);
  --bg-surface: var(--color-white);
  --bg-surface-secondary: var(--color-gray-50);
  --bg-surface-tertiary: var(--color-gray-100);
  --bg-overlay: rgba(0, 0, 0, 0.5);
  --bg-card: var(--color-white);
  --bg-input: var(--color-white);
  --bg-hover: var(--color-gray-50);
  --bg-active: var(--color-gray-100);
  --bg-selected: rgba(67, 121, 255, 0.1);
  --bg-surface-secondary--transparent: rgba(243, 244, 246, 0.75);

  /* ------------------------------------------------------------------------
     Text Colors
     ------------------------------------------------------------------------ */
  --text-primary: var(--color-gray-900);
  --text-secondary: var(--color-gray-600);
  --text-tertiary: var(--color-gray-500);
  --text-muted: var(--color-gray-400);
  --text-inverse: var(--color-white);
  --text-link: var(--color-primary);
  --text-link-hover: var(--color-primary-dark);

  /* ------------------------------------------------------------------------
     Border Colors
     ------------------------------------------------------------------------ */
  --border-color: var(--color-gray-200);
  --border-color-light: var(--color-gray-100);
  --border-color-dark: var(--color-gray-300);
  --border-color-focus: var(--color-primary);

  /* ------------------------------------------------------------------------
     Shadow System
     ------------------------------------------------------------------------ */
  --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-sm:
    0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
  --shadow-md:
    0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
  --shadow-lg:
    0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
  --shadow-xl:
    0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  --shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, 0.05);
  --shadow-primary: 0 4px 14px 0 rgba(67, 121, 255, 0.35);

  /* ------------------------------------------------------------------------
     Typography
     ------------------------------------------------------------------------ */
  --font-family-sans:
    "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, sans-serif;
  --font-family-mono: "JetBrains Mono", "Fira Code", "Consolas", monospace;
  --font-family-display: var(--font-family-sans);

  --big-font: "Plus Jakarta Sans", var(--font-family-sans);

  /* Font Sizes */
  --font-size-xs: 0.75rem; /* 12px */
  --font-size-sm: 0.875rem; /* 14px */
  --font-size-base: 1rem; /* 16px */
  --font-size-lg: 1.125rem; /* 18px */
  --font-size-xl: 1.25rem; /* 20px */
  --font-size-2xl: 1.5rem; /* 24px */
  --font-size-3xl: 1.875rem; /* 30px */
  --font-size-4xl: 2.25rem; /* 36px */
  --font-size-5xl: 3rem; /* 48px */
  --font-size-6xl: 3.75rem; /* 60px */

  /* Font Weights */
  --font-weight-light: 300;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --font-weight-extrabold: 800;

  /* Line Heights */
  --line-height-tight: 1.25;
  --line-height-snug: 1.375;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.625;
  --line-height-loose: 2;

  /* Letter Spacing */
  --letter-spacing-tight: -0.025em;
  --letter-spacing-normal: 0;
  --letter-spacing-wide: 0.025em;
  --letter-spacing-wider: 0.05em;
  --letter-spacing-widest: 0.1em;

  /* ------------------------------------------------------------------------
     Spacing Scale
     ------------------------------------------------------------------------ */
  --spacing-0: 0;
  --spacing-1: 0.25rem; /* 4px */
  --spacing-2: 0.5rem; /* 8px */
  --spacing-3: 0.75rem; /* 12px */
  --spacing-4: 1rem; /* 16px */
  --spacing-5: 1.25rem; /* 20px */
  --spacing-6: 1.5rem; /* 24px */
  --spacing-8: 2rem; /* 32px */
  --spacing-10: 2.5rem; /* 40px */
  --spacing-12: 3rem; /* 48px */
  --spacing-16: 4rem; /* 64px */
  --spacing-20: 5rem; /* 80px */
  --spacing-24: 6rem; /* 96px */
  --spacing-32: 8rem; /* 128px */

  /* ------------------------------------------------------------------------
     Border Radius
     ------------------------------------------------------------------------ */
  --radius-none: 0;
  --radius-sm: 0.125rem; /* 2px */
  --radius-md: 0.375rem; /* 6px */
  --radius-lg: 0.5rem; /* 8px */
  --radius-xl: 0.75rem; /* 12px */
  --radius-2xl: 1rem; /* 16px */
  --radius-3xl: 1.5rem; /* 24px */
  --radius-full: 9999px;

  /* ------------------------------------------------------------------------
     Transitions
     ------------------------------------------------------------------------ */
  --transition-fast: 150ms ease;
  --transition-normal: 200ms ease;
  --transition-slow: 300ms ease;
  --transition-slower: 500ms ease;

  /* ------------------------------------------------------------------------
     Z-Index Scale
     ------------------------------------------------------------------------ */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;
  --z-toast: 1080;

  /* ------------------------------------------------------------------------
     Container Widths
     ------------------------------------------------------------------------ */
  --container-sm: 640px;
  --container-md: 768px;
  --container-lg: 1024px;
  --container-xl: 1280px;
  --container-2xl: 1536px;

  /* ------------------------------------------------------------------------
     Sidebar & Layout
     ------------------------------------------------------------------------ */
  --sidebar-width: 280px;
  --sidebar-width-mini: 200px;
  --sidebar-width-collapsed: 72px;
  --header-height: 64px;
  --header-height-mobile: 56px;
  --header-height-inner: 72px;

  /* ------------------------------------------------------------------------
     Form Controls
     ------------------------------------------------------------------------ */
  --input-height-sm: 32px;
  --input-height-md: 40px;
  --input-height-lg: 48px;
  --input-padding-x: var(--spacing-3);
  --input-border-width: 1px;
  --input-border-radius: var(--radius-lg);
}

/* ============================================================================
   DARK THEME
   Twitter-style dark with blue CTAs
   ============================================================================ */
[data-theme="dark"] {
  /* Background Colors */
  --bg-body: #0f1419;
  --bg-surface: #16202a;
  --bg-card: #16202a;
  --bg-input: #1d2a36;
  --bg-hover: #1d2a36;
  --bg-active: #243442;
  --bg-surface-secondary: #1d2a36;
  --bg-surface-tertiary: #243442;
  --bg-overlay: rgba(0, 0, 0, 0.7);
  --bg-surface-secondary--transparent: rgba(29, 42, 54, 0.75);
  --bg-selected: rgba(67, 121, 255, 0.2);

  /* Text Colors */
  --text-primary: #f7f9f9;
  --text-secondary: #8b98a5;
  --text-tertiary: #6e7681;
  --text-muted: #536471;
  --text-inverse: #0f1419;

  /* Border Colors */
  --border-color: #2f3336;
  --border-color-light: #243442;
  --border-color-dark: #3d4449;

  /* Neutral Colors */
  --color-gray-50: #1d2a36;
  --color-gray-100: #243442;
  --color-gray-200: #2f3336;
  --color-gray-300: #3d4449;
  --color-gray-400: #536471;
  --color-gray-500: #6e7681;
  --color-gray-600: #8b98a5;
  --color-gray-700: #b5c0ca;
  --color-gray-800: #d9e0e5;
  --color-gray-900: #f7f9f9;

  /* Shadows (darker for dark mode) */
  --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.2);
  --shadow-sm:
    0 1px 3px 0 rgba(0, 0, 0, 0.3), 0 1px 2px -1px rgba(0, 0, 0, 0.3);
  --shadow-md:
    0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -2px rgba(0, 0, 0, 0.3);
  --shadow-lg:
    0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -4px rgba(0, 0, 0, 0.3);
  --shadow-xl:
    0 20px 25px -5px rgba(0, 0, 0, 0.4), 0 8px 10px -6px rgba(0, 0, 0, 0.4);

  /* Semantic Colors - Adjusted for dark mode */
  --color-success-bg: rgba(16, 185, 129, 0.15);
  --color-warning-bg: rgba(245, 158, 11, 0.15);
  --color-error-bg: rgba(239, 68, 68, 0.15);
  --color-info-bg: rgba(59, 130, 246, 0.15);
}

/* ============================================================================
   CREAMY THEME (Soft)
   Cream white + sky blue tones
   ============================================================================ */
[data-theme="creamy"] {
  /* Brand Colors - Sky blue */
  --color-primary: #0ea5e9;
  --color-primary-light: #38bdf8;
  --color-primary-lighter: #7dd3fc;
  --color-primary-dark: #0284c7;
  --color-primary-darker: #0369a1;

  /* Background Colors - Cream tones */
  --bg-body: #fffdfb;
  --bg-surface: #ffffff;
  --bg-surface-secondary: #faf8f5;
  --bg-surface-tertiary: #f5f2ed;
  --bg-overlay: rgba(0, 0, 0, 0.4);
  --bg-surface-secondary--transparent: rgba(250, 248, 245, 0.75);
  --bg-selected: rgba(14, 165, 233, 0.1);
  --bg-card: #ffffff;
  --bg-input: #ffffff;
  --bg-hover: #faf8f5;
  --bg-active: #f5f2ed;

  /* Text Colors - Warmer tones */
  --text-primary: #1a1a1a;
  --text-secondary: #525252;
  --text-tertiary: #737373;
  --text-muted: #a3a3a3;

  /* Border Colors - Warmer */
  --border-color: #e8e4dd;
  --border-color-light: #f0ede8;
  --border-color-dark: #d9d4cc;

  /* Neutral Colors - Cream spectrum */
  --color-gray-50: #fdfbf7;
  --color-gray-100: #faf8f5;
  --color-gray-200: #f5f2ed;
  --color-gray-300: #e8e4dd;
  --color-gray-400: #c4bfba;
  --color-gray-500: #8a8580;
  --color-gray-600: #5c5853;
  --color-gray-700: #3d3a36;
  --color-gray-800: #262422;
  --color-gray-900: #1a1a1a;

  /* Softer shadows */
  --shadow-xs: 0 1px 2px 0 rgba(26, 26, 26, 0.03);
  --shadow-sm:
    0 1px 3px 0 rgba(26, 26, 26, 0.06), 0 1px 2px -1px rgba(26, 26, 26, 0.06);
  --shadow-md:
    0 4px 6px -1px rgba(26, 26, 26, 0.06), 0 2px 4px -2px rgba(26, 26, 26, 0.06);
  --shadow-lg:
    0 10px 15px -3px rgba(26, 26, 26, 0.08),
    0 4px 6px -4px rgba(26, 26, 26, 0.08);
  --shadow-xl:
    0 20px 25px -5px rgba(26, 26, 26, 0.08),
    0 8px 10px -6px rgba(26, 26, 26, 0.08);
  --shadow-primary: 0 4px 14px 0 rgba(14, 165, 233, 0.3);
}

/* ============================================================================
   RTL SUPPORT
   Right-to-left language support
   ============================================================================ */
[dir="rtl"] {
  --sidebar-position: right;
  --text-direction: rtl;
}

/* ============================================================================
   BASE BODY STYLES - Apply theme colors
   ============================================================================ */
body {
  background-color: var(--bg-body);
  color: var(--text-primary);
  font-family: var(--font-family-sans);
  transition:
    background-color 0.3s ease,
    color 0.3s ease;
}

/* ============================================================================
   REDUCED MOTION
   Accessibility: Respect user's motion preferences
   ============================================================================ */
@media (prefers-reduced-motion: reduce) {
  :root {
    --transition-fast: 0ms;
    --transition-normal: 0ms;
    --transition-slow: 0ms;
    --transition-slower: 0ms;
  }
}

/* ============================================================================
   HIGH CONTRAST MODE
   Accessibility: Enhanced contrast for visibility
   ============================================================================ */
@media (prefers-contrast: high) {
  :root {
    --border-color: var(--color-gray-400);
    --text-secondary: var(--color-gray-700);
    --text-tertiary: var(--color-gray-600);
  }

  .theme-dark {
    --border-color: var(--color-gray-500);
    --text-secondary: var(--color-gray-400);
    --text-tertiary: var(--color-gray-500);
  }
}

/* ============================================================================
   TASK CARD GRADIENT VARIABLES
   ============================================================================ */
:root {
  --task-gradient-base: linear-gradient(
    135deg,
    rgba(255, 255, 255, 0.9),
    rgba(255, 255, 255, 0.6)
  );

  --task-gradient-low: linear-gradient(
    135deg,
    rgba(16, 185, 129, 0.12),
    rgba(16, 185, 129, 0.03)
  );

  --task-gradient-medium: linear-gradient(
    135deg,
    rgba(245, 158, 11, 0.14),
    rgba(245, 158, 11, 0.04)
  );

  --task-gradient-high: linear-gradient(
    135deg,
    rgba(239, 68, 68, 0.14),
    rgba(239, 68, 68, 0.04)
  );

  --task-gradient-urgent: linear-gradient(
    135deg,
    rgba(220, 38, 38, 0.18),
    rgba(220, 38, 38, 0.06)
  );
}

[data-theme="dark"],
[data-theme="midnight"] {
  --task-gradient-base: linear-gradient(
    135deg,
    rgba(255, 255, 255, 0.04),
    rgba(255, 255, 255, 0.01)
  );
}

:root {
  --priority-urgent-start: #dc2626;
  --priority-urgent-end: #991b1b;
  --priority-urgent-glow: rgba(220, 38, 38, 0.45);
}

[data-theme="dark"],
[data-theme="midnight"] {
  --priority-urgent-start: #ef4444;
  --priority-urgent-end: #b91c1c;
  --priority-urgent-glow: rgba(239, 68, 68, 0.6);
}

/* =========================================================
   DARK THEME ALERTS
   ========================================================= */

[data-theme="dark"] .alert {
  background-color: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: #e5e7eb; /* neutral text */
}

/* WARNING */
[data-theme="dark"] .alert-warning {
  background-color: rgba(202, 138, 4, 0.15);
  border-color: rgba(202, 138, 4, 0.35);
  color: #facc15;
}

/* DANGER / ERROR */
[data-theme="dark"] .alert-danger {
  background-color: rgba(220, 38, 38, 0.15);
  border-color: rgba(220, 38, 38, 0.35);
  color: #fca5a5;
}

/* SUCCESS */
[data-theme="dark"] .alert-success {
  background-color: rgba(34, 197, 94, 0.15);
  border-color: rgba(34, 197, 94, 0.35);
  color: #86efac;
}

/* INFO */
[data-theme="dark"] .alert-info {
  background-color: rgba(59, 130, 246, 0.15);
  border-color: rgba(59, 130, 246, 0.35);
  color: #93c5fd;
}