/* base.css — Blackshires Leadership Academy Design Tokens & Reset */

/* ── Reset ─────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; scroll-behavior: smooth; }
body { min-height: 100dvh; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }
img, picture, video, canvas, svg { display: block; max-width: 100%; }
input, button, textarea, select { font: inherit; color: inherit; }
button { cursor: pointer; background: none; border: none; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
h1, h2, h3, h4, h5, h6 { font-size: inherit; font-weight: inherit; }
p, h1, h2, h3, h4, h5, h6 { overflow-wrap: break-word; }
table { border-collapse: collapse; }
:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 2px; border-radius: var(--radius-sm); }

/* ── Typography Tokens ──────────────────────── */
:root {
  --font-display: 'Clash Display', 'Inter', sans-serif;
  --font-body: 'Satoshi', 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  --text-xs: clamp(0.6875rem, 0.65rem + 0.15vw, 0.75rem);
  --text-sm: clamp(0.8125rem, 0.78rem + 0.15vw, 0.875rem);
  --text-base: clamp(0.9375rem, 0.9rem + 0.15vw, 1rem);
  --text-lg: clamp(1.0625rem, 1rem + 0.25vw, 1.125rem);
  --text-xl: clamp(1.25rem, 1.15rem + 0.4vw, 1.5rem);
  --text-2xl: clamp(1.5rem, 1.3rem + 0.8vw, 2rem);
  --text-3xl: clamp(1.875rem, 1.5rem + 1.5vw, 2.5rem);
  --text-4xl: clamp(2.25rem, 1.8rem + 2vw, 3rem);

  --leading-tight: 1.15;
  --leading-snug: 1.3;
  --leading-normal: 1.5;
  --leading-relaxed: 1.65;

  --tracking-tight: -0.02em;
  --tracking-normal: 0;
  --tracking-wide: 0.03em;
  --tracking-wider: 0.06em;

  --weight-light: 300;
  --weight-normal: 400;
  --weight-medium: 500;
  --weight-semibold: 600;
  --weight-bold: 700;
}

/* ── Spacing (4px base) ─────────────────────── */
:root {
  --space-0: 0;
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
}

/* ── Radius ──────────────────────────────────── */
:root {
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;
}

/* ── Shadows (warm-toned) ────────────────────── */
:root {
  --shadow-sm: 0 1px 2px rgba(26, 26, 26, 0.06);
  --shadow-md: 0 4px 12px rgba(26, 26, 26, 0.08);
  --shadow-lg: 0 12px 32px rgba(26, 26, 26, 0.12);
  --shadow-xl: 0 20px 48px rgba(26, 26, 26, 0.16);
}

/* ── Transitions ─────────────────────────────── */
:root {
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --duration-fast: 150ms;
  --duration-normal: 250ms;
  --duration-slow: 400ms;
}

/* ── Z-Index Scale ───────────────────────────── */
:root {
  --z-base: 1;
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-sidebar: 300;
  --z-overlay: 400;
  --z-modal: 500;
  --z-toast: 600;
  --z-tooltip: 700;
}

/* ── Light Mode (default) ────────────────────── */
:root {
  --color-primary: #FCB900;
  --color-primary-hover: #E5A800;
  --color-primary-active: #CC9600;
  --color-primary-highlight: #FFF8E1;
  --color-primary-text: #212121;

  --color-bg: #FAFAF8;
  --color-surface: #FFFFFF;
  --color-surface-2: #F5F3EF;
  --color-surface-offset: #EBE8E2;
  --color-surface-offset-2: #D4D0C8;
  --color-surface-dynamic: #EBE8E2;
  --color-divider: #EBE8E2;
  --color-border: #D4D0C8;

  --color-text: #1A1A1A;
  --color-text-muted: #6B6B6B;
  --color-text-faint: #9A9A9A;
  --color-text-inverse: #FFFFFF;

  --color-success: #059669;
  --color-success-bg: #ECFDF5;
  --color-warning: #D97706;
  --color-warning-bg: #FFFBEB;
  --color-error: #DC2626;
  --color-error-bg: #FEF2F2;
  --color-info: #2563EB;
  --color-info-bg: #EFF6FF;

  --color-dark-accent: #212121;
  --color-sidebar-bg: #212121;
  --color-sidebar-text: #F5F5F5;
  --color-sidebar-muted: #A3A3A3;
  --color-sidebar-hover: #333333;
  --color-sidebar-active: #FCB900;
}

/* ── Dark Mode ───────────────────────────────── */
[data-theme="dark"] {
  --color-primary: #FCD34D;
  --color-primary-hover: #FCB900;
  --color-primary-active: #E5A800;
  --color-primary-highlight: #422006;
  --color-primary-text: #1A1A1A;

  --color-bg: #1A1A1A;
  --color-surface: #262626;
  --color-surface-2: #333333;
  --color-surface-offset: #262626;
  --color-surface-offset-2: #333333;
  --color-surface-dynamic: #333333;
  --color-divider: #333333;
  --color-border: #4A4A4A;

  --color-text: #F5F5F5;
  --color-text-muted: #A3A3A3;
  --color-text-faint: #737373;
  --color-text-inverse: #1A1A1A;

  --color-success: #34D399;
  --color-success-bg: #064E3B;
  --color-warning: #FBBF24;
  --color-warning-bg: #422006;
  --color-error: #F87171;
  --color-error-bg: #450A0A;
  --color-info: #60A5FA;
  --color-info-bg: #1E3A5F;

  --color-sidebar-bg: #141414;
  --color-sidebar-text: #F5F5F5;
  --color-sidebar-muted: #737373;
  --color-sidebar-hover: #262626;
  --color-sidebar-active: #FCD34D;
}

/* ── High Contrast Mode ──────────────────────── */
[data-high-contrast="true"] {
  --color-text: #000000;
  --color-text-muted: #333333;
  --color-text-faint: #555555;
  --color-border: #000000;
  --color-divider: #000000;
}
[data-theme="dark"][data-high-contrast="true"] {
  --color-text: #FFFFFF;
  --color-text-muted: #E0E0E0;
  --color-text-faint: #BBBBBB;
  --color-border: #FFFFFF;
  --color-divider: #FFFFFF;
}

/* ── Text Size Adjustments ───────────────────── */
[data-text-size="large"] {
  --text-xs: 0.875rem;
  --text-sm: 1rem;
  --text-base: 1.125rem;
  --text-lg: 1.25rem;
  --text-xl: 1.5rem;
  --text-2xl: 2rem;
  --text-3xl: 2.5rem;
}
[data-text-size="xl"] {
  --text-xs: 1rem;
  --text-sm: 1.125rem;
  --text-base: 1.25rem;
  --text-lg: 1.5rem;
  --text-xl: 1.75rem;
  --text-2xl: 2.25rem;
  --text-3xl: 2.75rem;
}

/* ── Base Styles ─────────────────────────────── */
html, body {
  height: 100%;
  overflow: hidden;
  margin: 0;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--color-text);
  background-color: var(--color-bg);
  transition: background-color var(--duration-normal) var(--ease-out),
              color var(--duration-normal) var(--ease-out);
}

/* ── Utility Classes ─────────────────────────── */
.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
}

.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-4);
  padding: var(--space-2) var(--space-4);
  background: var(--color-primary);
  color: var(--color-primary-text);
  font-weight: var(--weight-semibold);
  border-radius: var(--radius-md);
  z-index: var(--z-toast);
  transition: top var(--duration-fast) var(--ease-out);
}
.skip-link:focus {
  top: var(--space-4);
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}