/* ============================================================
   WHT Cyber — base.css
   Design tokens + reset
   ============================================================ */

:root {
  /* Type scale */
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.75vw, 1.5rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1.25vw, 2.25rem);
  --text-2xl: clamp(2rem, 1.2rem + 2.5vw, 3.5rem);
  --text-3xl: clamp(2.5rem, 1rem + 4vw, 5rem);
  --text-hero: clamp(3rem, 0.5rem + 7vw, 8rem);

  /* Spacing */
  --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;
  --space-32: 8rem;

  /* Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-full: 9999px;

  /* Transitions */
  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);

  /* Content widths */
  --content-narrow: 640px;
  --content-default: 960px;
  --content-wide: 1200px;

  /* Fonts */
  --font-body: 'Geist', 'Inter', system-ui, -apple-system, Segoe UI, sans-serif;
  --font-mono: 'Geist Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
  --font-display: 'Geist', 'Inter', system-ui, sans-serif;
}

/* ===== Cyber/dark teal palette — informed by "modern security" direction ===== */

:root,
[data-theme='light'] {
  --color-bg: #f6f8f9;
  --color-surface: #ffffff;
  --color-surface-2: #f1f4f6;
  --color-surface-offset: #e9eef1;
  --color-surface-offset-2: #dfe6ea;
  --color-divider: #d4dde2;
  --color-border: #c2cdd3;

  --color-text: #0c1417;
  --color-text-muted: #4c6068;
  --color-text-faint: #8a9aa1;
  --color-text-inverse: #f4f7f8;

  --color-primary: #0ea5a8;        /* teal */
  --color-primary-hover: #0b8a8d;
  --color-primary-active: #086a6d;
  --color-primary-highlight: #cdeded;

  --color-accent-glow: #5eead4;

  --shadow-sm: 0 1px 2px rgba(12,20,23,0.06);
  --shadow-md: 0 4px 12px rgba(12,20,23,0.08);
  --shadow-lg: 0 12px 32px rgba(12,20,23,0.12);
}

[data-theme='dark'] {
  --color-bg: #07100f;
  --color-surface: #0c1817;
  --color-surface-2: #11201f;
  --color-surface-offset: #0e1c1b;
  --color-surface-offset-2: #142624;
  --color-divider: #1d2f2d;
  --color-border: #28403d;

  --color-text: #d6e6e4;
  --color-text-muted: #7a9491;
  --color-text-faint: #4d6764;
  --color-text-inverse: #07100f;

  --color-primary: #2dd4bf;        /* teal */
  --color-primary-hover: #5eead4;
  --color-primary-active: #14b8a6;
  --color-primary-highlight: #133e3a;

  --color-accent-glow: #2dd4bf;

  --shadow-sm: 0 1px 2px rgba(0,0,0,0.4);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.5);
  --shadow-lg: 0 12px 32px rgba(0,0,0,0.55);
}

/* ===== Reset ===== */

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
  scroll-padding-top: var(--space-16);
}

body {
  min-height: 100dvh;
  line-height: 1.6;
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  background-color: var(--color-bg);
}

img, picture, video, canvas, svg {
  display: block;
  max-width: 100%;
  height: auto;
}

ul { list-style: none; }

input, button, textarea, select {
  font: inherit;
  color: inherit;
}

h1, h2, h3, h4, h5, h6 {
  text-wrap: balance;
  line-height: 1.15;
  font-family: var(--font-display);
  letter-spacing: -0.02em;
}

p, li, figcaption {
  text-wrap: pretty;
}

a {
  color: inherit;
  text-decoration: none;
}

::selection {
  background: var(--color-primary-highlight);
  color: var(--color-text);
}

:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

button {
  cursor: pointer;
  background: none;
  border: none;
}

a, button, [role='button'] {
  transition:
    color var(--transition-interactive),
    background var(--transition-interactive),
    border-color var(--transition-interactive),
    box-shadow var(--transition-interactive),
    transform var(--transition-interactive);
}

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

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