/* ============================================================
   IESA CSS VARIABLES - ЕДИНЫЙ ИСТОЧНИК ИСТИНЫ
   Версия: 2.0 (полная переработка)
   
   Все переменные дизайн-системы в одном месте.
   Чтобы изменить цвет/размер/тень - меняем ТОЛЬКО здесь.
   ============================================================ */

:root {
  /* ====================================================
     1. ЦВЕТОВАЯ ПАЛИТРА
     ==================================================== */
  
  /* Primary - Красный (фирменный цвет IESA) */
  --primary: #dc2626;
  --primary-hover: #b91c1c;
  --primary-active: #991b1b;
  --primary-light: #fef2f2;
  --primary-50: rgba(220, 38, 38, 0.04);
  --primary-100: rgba(220, 38, 38, 0.08);
  --primary-200: rgba(220, 38, 38, 0.12);
  
  /* Secondary - Синий */
  --secondary: #2563eb;
  --secondary-hover: #1d4ed8;
  --secondary-active: #1e40af;
  --secondary-light: #eff6ff;
  --secondary-50: rgba(37, 99, 235, 0.04);
  --secondary-100: rgba(37, 99, 235, 0.08);
  --secondary-200: rgba(37, 99, 235, 0.12);
  
  /* Success - Зелёный */
  --success: #16a34a;
  --success-hover: #15803d;
  --success-active: #166534;
  --success-light: #f0fdf4;
  --success-50: rgba(22, 163, 74, 0.04);
  --success-100: rgba(22, 163, 74, 0.08);
  --success-200: rgba(22, 163, 74, 0.12);
  
  /* Warning - Жёлтый/Amber */
  --warning: #d97706;
  --warning-hover: #b45309;
  --warning-active: #92400e;
  --warning-light: #fffbeb;
  --warning-50: rgba(217, 119, 6, 0.04);
  --warning-100: rgba(217, 119, 6, 0.08);
  --warning-200: rgba(217, 119, 6, 0.12);
  
  /* Danger - Красный (ошибки) */
  --danger: #ef4444;
  --danger-hover: #dc2626;
  --danger-light: #fef2f2;
  --danger-100: rgba(239, 68, 68, 0.1);
  
  /* Info - Голубой */
  --info: #0284c7;
  --info-hover: #0369a1;
  --info-light: #f0f9ff;
  --info-100: rgba(2, 132, 199, 0.08);
  
  /* Emerald - Дополнительный зелёный (для профиля) */
  --emerald: #059669;
  --emerald-hover: #047857;
  --emerald-50: rgba(5, 150, 105, 0.04);
  --emerald-100: rgba(5, 150, 105, 0.08);
  --emerald-200: rgba(5, 150, 105, 0.12);
  
  /* Neutrals - Серая шкала (dark-theme) */
  --white: #ffffff;
  --black: #000000;
  --gray-50: rgba(255, 255, 255, 0.03);
  --gray-100: rgba(255, 255, 255, 0.06);
  --gray-200: rgba(255, 255, 255, 0.1);
  --gray-300: rgba(255, 255, 255, 0.15);
  --gray-400: rgba(255, 255, 255, 0.3);
  --gray-500: rgba(255, 255, 255, 0.45);
  --gray-600: rgba(255, 255, 255, 0.6);
  --gray-700: rgba(255, 255, 255, 0.7);
  --gray-800: rgba(255, 255, 255, 0.8);
  --gray-900: rgba(255, 255, 255, 0.9);
  
  /* Текстовые цвета (dark-theme friendly) */
  --text-primary: rgba(255, 255, 255, 0.87);
  --text-secondary: rgba(255, 255, 255, 0.65);
  --text-muted: rgba(255, 255, 255, 0.5);
  --text-light: rgba(255, 255, 255, 0.38);
  --text-inverse: #111827;
  
  /* Фоновые цвета */
  --bg-body: #0e0e18;
  --bg-white: #ffffff;
  --bg-light: #f5f5f5;
  --bg-dark: #111827;
  
  /* Границы (dark-theme) */
  --border-color: rgba(255, 255, 255, 0.1);
  --border-color-light: rgba(255, 255, 255, 0.06);
  --border-color-hover: rgba(255, 255, 255, 0.18);

  /* Тёмные поверхности (glassmorphism карточки) */
  --bg-surface: #111118;
  --bg-surface-hover: #1a1a24;
  --bg-overlay: rgba(14, 14, 24, 0.98);
  --text-on-dark: rgba(255, 255, 255, 0.87);
  --text-on-dark-muted: rgba(255, 255, 255, 0.55);
  --border-dark: rgba(255, 255, 255, 0.08);
  --border-dark-hover: rgba(255, 255, 255, 0.15);

  /* Aliased color-gray-* for homepage/about sections (used in pages.css).
     These resolve in white-bg containers where the scoped override in
     base.css sets --gray-* back to their light hex values. */
  --color-gray-50: var(--gray-50);
  --color-gray-100: var(--gray-100);
  --color-gray-200: var(--gray-200);
  --color-gray-300: var(--gray-300);
  --color-gray-400: var(--gray-400);
  --color-gray-500: var(--gray-500);
  --color-gray-600: var(--gray-600);
  --color-gray-700: var(--gray-700);
  --color-gray-800: var(--gray-800);
  --color-gray-900: var(--gray-900);
  --color-primary: var(--primary);
  
  /* ====================================================
     2. ТИПОГРАФИЯ
     ==================================================== */
  
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'Courier New', Courier, monospace;
  
  /* Размеры шрифтов */
  --text-xs: 0.75rem;      /* 12px */
  --text-sm: 0.875rem;     /* 14px */
  --text-base: 1rem;       /* 16px */
  --text-lg: 1.125rem;     /* 18px */
  --text-xl: 1.25rem;      /* 20px */
  --text-2xl: 1.5rem;      /* 24px */
  --text-3xl: 1.875rem;    /* 30px */
  --text-4xl: 2.25rem;     /* 36px */
  --text-5xl: 3rem;        /* 48px */
  
  /* Веса шрифтов */
  --font-light: 300;
  --font-normal: 400;
  --font-medium: 500;
  --font-semibold: 600;
  --font-bold: 700;
  --font-extrabold: 800;
  
  /* Высота строки */
  --leading-tight: 1.25;
  --leading-snug: 1.375;
  --leading-normal: 1.5;
  --leading-relaxed: 1.625;
  --leading-loose: 2;
  
  /* Letter spacing */
  --tracking-tight: -0.03em;
  --tracking-normal: 0;
  --tracking-wide: 0.02em;
  --tracking-wider: 0.05em;
  --tracking-widest: 0.08em;
  
  /* ====================================================
     3. SPACING (отступы)
     ==================================================== */
  
  --space-0: 0;
  --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 */
  
  /* ====================================================
     4. BORDER RADIUS
     ==================================================== */
  
  --radius-none: 0;
  --radius-sm: 0.25rem;    /* 4px */
  --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;
  
  /* Специфичные радиусы */
  --radius-card: 1.25rem;  /* 20px - для карточек */
  --radius-btn: 0.875rem;  /* 14px - для кнопок */
  --radius-input: 0.75rem; /* 12px - для инпутов */
  --radius-badge: 0.5rem;  /* 8px - для badges */
  
  /* ====================================================
     5. ТЕНИ
     ==================================================== */
  
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1), 0 1px 2px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07), 0 2px 4px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1), 0 4px 6px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.1), 0 10px 10px rgba(0, 0, 0, 0.04);
  --shadow-2xl: 0 25px 50px rgba(0, 0, 0, 0.15);
  --shadow-inner: inset 0 2px 4px rgba(0, 0, 0, 0.06);
  
  /* Тени для карточек */
  --shadow-card: 0 4px 16px rgba(0, 0, 0, 0.06);
  --shadow-card-hover: 0 8px 24px rgba(0, 0, 0, 0.1);
  --shadow-card-lg: 0 8px 24px rgba(0, 0, 0, 0.08), 0 2px 6px rgba(0, 0, 0, 0.04);
  
  /* Цветные тени для кнопок */
  --shadow-primary: 0 4px 14px rgba(239, 68, 68, 0.25);
  --shadow-primary-lg: 0 6px 20px rgba(239, 68, 68, 0.35);
  --shadow-secondary: 0 4px 14px rgba(59, 130, 246, 0.25);
  --shadow-success: 0 4px 14px rgba(34, 197, 94, 0.25);
  --shadow-warning: 0 4px 14px rgba(245, 158, 11, 0.25);
  --shadow-emerald: 0 4px 14px rgba(16, 185, 129, 0.25);
  
  /* Тени для иконок */
  --shadow-icon-primary: 0 6px 16px rgba(239, 68, 68, 0.3);
  --shadow-icon-secondary: 0 6px 16px rgba(59, 130, 246, 0.3);
  --shadow-icon-warning: 0 6px 16px rgba(245, 158, 11, 0.3);
  --shadow-icon-emerald: 0 6px 16px rgba(16, 185, 129, 0.3);
  
  /* ====================================================
     6. ГРАДИЕНТЫ
     ==================================================== */
  
  --gradient-primary: linear-gradient(135deg, #dc2626 0%, #b91c1c 100%);
  --gradient-secondary: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
  --gradient-success: linear-gradient(135deg, #16a34a 0%, #15803d 100%);
  --gradient-warning: linear-gradient(135deg, #d97706 0%, #b45309 100%);
  --gradient-emerald: linear-gradient(135deg, #059669 0%, #047857 100%);
  --gradient-dark: linear-gradient(135deg, #374151 0%, #1f2937 100%);
  --gradient-auth: linear-gradient(135deg, #0284c7 0%, #0369a1 100%);
  
  /* Фоновые градиенты (dark-theme) */
  --gradient-page: linear-gradient(135deg, var(--bg-body) 0%, var(--bg-body) 100%);
  --gradient-card: linear-gradient(145deg, var(--bg-surface) 0%, rgba(26,26,36,0.95) 100%);
  --gradient-card-light: linear-gradient(145deg, rgba(255,255,255,0.04) 0%, rgba(255,255,255,0.02) 100%);
  
  /* Градиенты для карточек профиля */
  --gradient-card-red: linear-gradient(135deg, rgba(220,38,38,0.03) 0%, rgba(185,28,28,0.05) 100%);
  --gradient-card-blue: linear-gradient(135deg, rgba(37,99,235,0.03) 0%, rgba(30,78,216,0.05) 100%);
  --gradient-card-amber: linear-gradient(135deg, rgba(217,119,6,0.03) 0%, rgba(180,67,9,0.05) 100%);
  --gradient-card-emerald: linear-gradient(135deg, rgba(5,150,105,0.03) 0%, rgba(4,120,87,0.05) 100%);
  
  /* Градиенты для статистики */
  --gradient-stat-red: linear-gradient(135deg, rgba(220,38,38,0.04) 0%, rgba(185,28,28,0.06) 100%);
  --gradient-stat-amber: linear-gradient(135deg, rgba(217,119,6,0.04) 0%, rgba(180,67,9,0.06) 100%);
  --gradient-stat-emerald: linear-gradient(135deg, rgba(5,150,105,0.04) 0%, rgba(4,120,87,0.06) 100%);
  
  /* ====================================================
     7. TRANSITIONS
     ==================================================== */
  
  --transition-fast: 150ms ease;
  --transition-base: 200ms ease;
  --transition-slow: 300ms ease;
  --transition-smooth: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: 300ms cubic-bezier(0.68, -0.55, 0.265, 1.55);
  
  /* ====================================================
     8. Z-INDEX
     ==================================================== */
  
  --z-below: -1;
  --z-base: 0;
  --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;
  --z-back-to-top: 1090;
  
  /* ====================================================
     9. КОНТЕЙНЕРЫ
     ==================================================== */
  
  --container-sm: 540px;
  --container-md: 720px;
  --container-lg: 960px;
  --container-xl: 1140px;
  --container-xxl: 1320px;
  --container-limited: 1280px;
  
  /* ====================================================
     10. FOCUS RING
     ==================================================== */
  
  --focus-ring-color: rgba(239, 68, 68, 0.25);
  --focus-ring-width: 3px;
  --focus-ring-offset: 2px;
  
  /* ====================================================
     11. SIZES (для аватаров, иконок)
     ==================================================== */
  
  --avatar-xs: 24px;
  --avatar-sm: 28px;
  --avatar-md: 36px;
  --avatar-lg: 64px;
  --avatar-xl: 120px;
  --avatar-2xl: 160px;
  
  --icon-box-sm: 40px;
  --icon-box-md: 56px;
  --icon-box-lg: 64px;
  
  /* ====================================================
     BREAKPOINTS (для справки, использовать в @media)
     ==================================================== */
  
  /* 
   * xs: 0
   * sm: 576px
   * md: 768px
   * lg: 992px
   * xl: 1200px
   * xxl: 1400px
   */
}