/* ============================================================
   BASE.CSS — Reset, CSS Variables, Typography, Dark Mode
   KazeX Sport Manager PWA
   ============================================================ */

:root {
  /* Màu chủ đạo */
  --color-primary: #0f766e;
  --color-primary-hover: #0d6d66;
  --color-primary-light: #ccfbf1;
  --color-primary-subtle: #f0fdfa;
  --color-primary-rgb: 15, 118, 110;

  /* Màu trạng thái */
  --color-success: #16a34a;
  --color-success-light: #dcfce7;
  --color-warning: #d97706;
  --color-warning-light: #fef3c7;
  --color-danger: #dc2626;
  --color-danger-light: #fee2e2;
  --color-info: #2563eb;
  --color-info-light: #dbeafe;

  /* Nền & bề mặt */
  --color-bg: #f6f7fb;
  --color-surface: #ffffff;
  --color-surface-hover: #f9fafb;
  --color-surface-active: #f3f4f6;
  --color-border: #e5e7eb;
  --color-border-light: #f3f4f6;
  --color-divider: #e5e7eb;

  /* Chữ */
  --color-text: #16202a;
  --color-text-secondary: #4b5563;
  --color-text-muted: #6b7280;
  --color-text-placeholder: #9ca3af;
  --color-text-inverse: #ffffff;

  /* Shadow */
  --shadow-xs: 0 1px 2px rgba(0,0,0,0.04);
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 6px rgba(0,0,0,0.06), 0 2px 4px rgba(0,0,0,0.04);
  --shadow-lg: 0 10px 15px rgba(0,0,0,0.08), 0 4px 6px rgba(0,0,0,0.04);
  --shadow-xl: 0 20px 25px rgba(0,0,0,0.1), 0 8px 10px rgba(0,0,0,0.04);

  /* Border radius */
  --radius-xs: 4px;
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-2xl: 20px;
  --radius-full: 9999px;

  /* Spacing */
  --space-2: 2px;
  --space-4: 4px;
  --space-6: 6px;
  --space-8: 8px;
  --space-10: 10px;
  --space-12: 12px;
  --space-16: 16px;
  --space-20: 20px;
  --space-24: 24px;
  --space-32: 32px;
  --space-40: 40px;
  --space-48: 48px;
  --space-64: 64px;

  /* Typography */
  --font-family: 'Be Vietnam Pro', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'SF Mono', 'Cascadia Code', 'Consolas', monospace;
  --text-xs: 0.6875rem;
  --text-sm: 0.8125rem;
  --text-base: 0.875rem;
  --text-md: 0.9375rem;
  --text-lg: 1.0625rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --leading-tight: 1.25;
  --leading-normal: 1.5;
  --leading-relaxed: 1.625;
  --weight-regular: 400;
  --weight-medium: 500;
  --weight-semibold: 600;
  --weight-bold: 700;

  /* Z-index */
  --z-base: 1;
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-nav: 300;
  --z-modal-backdrop: 400;
  --z-modal: 500;
  --z-toast: 600;

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

  /* Layout */
  --header-height: 56px;
  --bottom-nav-height: 64px;
  --content-max-width: 480px;
  --sidebar-width: 240px;
}

/* ---------- Dark Mode ---------- */
[data-theme='dark'] {
  --color-bg: #0f1419;
  --color-surface: #1a2332;
  --color-surface-hover: #1f2937;
  --color-surface-active: #263244;
  --color-border: #2d3a4a;
  --color-border-light: #1f2937;
  --color-divider: #2d3a4a;
  --color-text: #e5e7eb;
  --color-text-secondary: #9ca3af;
  --color-text-muted: #6b7280;
  --color-text-placeholder: #4b5563;
  --color-primary-light: #134e4a;
  --color-primary-subtle: #0f2d2a;
  --color-success-light: #14532d;
  --color-warning-light: #78350f;
  --color-danger-light: #7f1d1d;
  --color-info-light: #1e3a5f;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 6px rgba(0,0,0,0.3);
  --shadow-lg: 0 10px 15px rgba(0,0,0,0.4);
}

/* ---------- Reset ---------- */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { font-size: 16px; -webkit-text-size-adjust: 100%; -webkit-tap-highlight-color: transparent; scroll-behavior: smooth; }
body {
  font-family: var(--font-family);
  font-size: var(--text-base);
  font-weight: var(--weight-regular);
  line-height: var(--leading-normal);
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  min-height: 100vh;
  min-height: 100dvh;
}

/* ---------- Typography ---------- */
h1, h2, h3, h4 { font-weight: var(--weight-semibold); line-height: var(--leading-tight); }
h1 { font-size: var(--text-2xl); }
h2 { font-size: var(--text-xl); }
h3 { font-size: var(--text-lg); }
h4 { font-size: var(--text-md); }
p { line-height: var(--leading-relaxed); color: var(--color-text-secondary); }
a { color: var(--color-primary); text-decoration: none; }
strong { font-weight: var(--weight-semibold); }
small { font-size: var(--text-sm); }

/* ---------- Utilities ---------- */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-muted { color: var(--color-text-muted); }
.text-success { color: var(--color-success); }
.text-warning { color: var(--color-warning); }
.text-danger { color: var(--color-danger); }
.text-primary { color: var(--color-primary); }
.text-sm { font-size: var(--text-sm); }
.text-xs { font-size: var(--text-xs); }
.text-lg { font-size: var(--text-lg); }
.text-bold { font-weight: var(--weight-bold); }
.text-semibold { font-weight: var(--weight-semibold); }
.text-mono { font-family: var(--font-mono); }

.mt-4 { margin-top: var(--space-4); }
.mt-8 { margin-top: var(--space-8); }
.mt-12 { margin-top: var(--space-12); }
.mt-16 { margin-top: var(--space-16); }
.mt-24 { margin-top: var(--space-24); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-8 { margin-bottom: var(--space-8); }
.mb-12 { margin-bottom: var(--space-12); }
.mb-16 { margin-bottom: var(--space-16); }
.mb-24 { margin-bottom: var(--space-24); }

.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.flex-1 { flex: 1; }
.gap-4 { gap: var(--space-4); }
.gap-8 { gap: var(--space-8); }
.gap-12 { gap: var(--space-12); }
.gap-16 { gap: var(--space-16); }

.grid { display: grid; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }

.hidden { display: none !important; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }
.truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.w-full { width: 100%; }

/* ---------- Scrollbar ---------- */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--color-border); border-radius: var(--radius-full); }
::selection { background: rgba(var(--color-primary-rgb), 0.15); color: var(--color-primary); }
:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 2px; }

@media (min-width: 768px) {
  :root {
    --text-base: 0.9375rem;
    --text-lg: 1.125rem;
    --text-xl: 1.375rem;
    --text-2xl: 1.75rem;
  }
}