/* ============================================
   DESIGN TOKENS — DevDash Generated
   Quy định toàn bộ giá trị visual cho project.
   AI coder: LUÔN dùng var(--xxx), KHÔNG hardcode giá trị.
   ============================================ */

:root {
  /* ---- Colors ---- */
  --color-primary: #2563eb;
  --color-primary-hover: #1d4ed8;
  --color-primary-light: #dbeafe;
  --color-secondary: #64748b;
  --color-secondary-hover: #475569;
  --color-success: #16a34a;
  --color-success-light: #dcfce7;
  --color-danger: #dc2626;
  --color-danger-light: #fee2e2;
  --color-warning: #d97706;
  --color-warning-light: #fef3c7;
  --color-info: #0891b2;
  --color-info-light: #cffafe;

  /* ---- Background ---- */
  --color-bg: #ffffff;
  --color-bg-secondary: #f8fafc;
  --color-bg-tertiary: #f1f5f9;

  /* ---- Text ---- */
  --color-text: #1e293b;
  --color-text-secondary: #64748b;
  --color-text-tertiary: #94a3b8;
  --color-text-inverse: #ffffff;

  /* ---- Border ---- */
  --color-border: #e2e8f0;
  --color-border-hover: #cbd5e1;
  --color-border-focus: #2563eb;

  /* ---- Spacing ---- */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;

  /* ---- Typography ---- */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
  --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: 2rem;      /* 32px */
  --line-height-tight: 1.25;
  --line-height-base: 1.5;
  --line-height-loose: 1.75;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;

  /* ---- Border Radius ---- */
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --radius-xl: 12px;
  --radius-full: 9999px;

  /* ---- Shadow ---- */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --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);

  /* ---- Transition ---- */
  --transition-fast: 150ms ease;
  --transition-base: 200ms ease;
  --transition-slow: 300ms ease;

  /* ---- Layout ---- */
  --container-max: 1200px;
  --sidebar-width: 260px;
  --header-height: 56px;
  --bottom-nav-height: 60px;

  /* ---- Touch (mobile target tối thiểu) ---- */
  --touch-min: 44px;

  /* ---- Breakpoints (mobile-first) ----
     CSS không cho dùng var() trong điều kiện @media, nên các giá trị này
     là tài liệu tham chiếu — @media phải viết literal đúng các mốc dưới đây:
     --bp-tablet  : 768px   → @media (min-width: 768px)
     --bp-desktop : 1024px  → @media (min-width: 1024px) */
  --bp-tablet: 768px;
  --bp-desktop: 1024px;
}

/* ============================================
   DARK THEME — bật bằng <html data-theme="dark">
   Chỉ override màu; spacing/font/radius giữ nguyên.
   ============================================ */
:root[data-theme="dark"] {
  --color-primary: #3b82f6;
  --color-primary-hover: #60a5fa;
  --color-primary-light: #1e3a5f;
  --color-secondary: #94a3b8;
  --color-secondary-hover: #cbd5e1;
  --color-success: #4ade80;
  --color-success-light: #064e3b;
  --color-danger: #f87171;
  --color-danger-light: #7f1d1d;
  --color-warning: #fbbf24;
  --color-warning-light: #78350f;
  --color-info: #38bdf8;
  --color-info-light: #0c4a6e;

  --color-bg: #0f172a;
  --color-bg-secondary: #1e293b;
  --color-bg-tertiary: #334155;

  --color-text: #e2e8f0;
  --color-text-secondary: #94a3b8;
  --color-text-tertiary: #64748b;
  --color-text-inverse: #0f172a;

  --color-border: #334155;
  --color-border-hover: #475569;
  --color-border-focus: #3b82f6;

  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.4);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.6);
}

/* Alert dùng màu chữ hardcode (light) — chỉnh lại cho nền tối dễ đọc */
:root[data-theme="dark"] .alert-success { color: #bbf7d0; border-color: #166534; }
:root[data-theme="dark"] .alert-danger  { color: #fecaca; border-color: #991b1b; }
:root[data-theme="dark"] .alert-warning { color: #fde68a; border-color: #92400e; }
:root[data-theme="dark"] .alert-info    { color: #a5f3fc; border-color: #155e75; }
