/* ===========================================
   CHOBOX.COM — Base Stylesheet
   Reset, tokens, design system foundation
   =========================================== */

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

html {
  -moz-text-size-adjust: none;
  -webkit-text-size-adjust: none;
  text-size-adjust: none;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
  hanging-punctuation: first last;
  scroll-padding-top: var(--space-16);
}

/* ===========================================
   TYPE SCALE (Fluid clamp)
   =========================================== */
:root {
  --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);
}

/* ===========================================
   SPACING (4px base)
   =========================================== */
:root {
  --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;
}

/* ===========================================
   CHOBOX COLOR PALETTE
   Warm newsprint / indie editorial feel
   Accent: Burnt Sienna / Terracotta
   Section accents: Applebox (rust), Soapbox (ochre), Sandbox (sage)
   =========================================== */
:root, [data-theme="light"] {
  /* Surfaces — warm aged paper */
  --color-bg:             #f5f0e8;
  --color-surface:        #f8f4ed;
  --color-surface-2:      #faf7f1;
  --color-surface-offset: #ede8df;
  --color-surface-dynamic: #e5dfD5;
  --color-divider:        #d8d0c4;
  --color-border:         #cfc6b8;

  /* Text — warm near-black ink */
  --color-text:           #2a2520;
  --color-text-muted:     #7a7168;
  --color-text-faint:     #b0a89e;
  --color-text-inverse:   #f5f0e8;

  /* Primary Accent — Burnt Sienna */
  --color-primary:        #b05a3a;
  --color-primary-hover:  #944a2e;
  --color-primary-active: #7a3c24;
  --color-primary-highlight: #e8d5cc;

  /* Section Accents */
  --color-applebox:       #b05a3a; /* Rust / terracotta */
  --color-soapbox:        #b8862e; /* Ochre / amber */
  --color-sandbox:        #5a8a6a; /* Sage green */

  /* Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.375rem;
  --radius-lg: 0.5rem;

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

  /* Shadows — warm toned */
  --shadow-sm: 0 1px 2px oklch(0.25 0.02 60 / 0.08);
  --shadow-md: 0 4px 12px oklch(0.25 0.02 60 / 0.1);
  --shadow-lg: 0 12px 32px oklch(0.25 0.02 60 / 0.14);

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

  /* Fonts */
  --font-display: 'Zodiak', 'Georgia', serif;
  --font-body: 'Satoshi', 'Helvetica Neue', sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', 'Fira Code', monospace;
}

/* ===========================================
   DARK MODE
   =========================================== */
[data-theme="dark"] {
  --color-bg:             #1a1816;
  --color-surface:        #211f1c;
  --color-surface-2:      #282520;
  --color-surface-offset: #1e1c19;
  --color-surface-dynamic: #302d28;
  --color-divider:        #3a3630;
  --color-border:         #4a453e;

  --color-text:           #dcd5cb;
  --color-text-muted:     #8a8178;
  --color-text-faint:     #5e5850;
  --color-text-inverse:   #1a1816;

  --color-primary:        #d4845e;
  --color-primary-hover:  #e09570;
  --color-primary-active: #c07048;
  --color-primary-highlight: #3a302a;

  --color-applebox:       #d4845e;
  --color-soapbox:        #d4a84e;
  --color-sandbox:        #7ab28a;

  --shadow-sm: 0 1px 2px oklch(0 0 0 / 0.25);
  --shadow-md: 0 4px 12px oklch(0 0 0 / 0.35);
  --shadow-lg: 0 12px 32px oklch(0 0 0 / 0.45);
}

/* System preference fallback */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --color-bg:             #1a1816;
    --color-surface:        #211f1c;
    --color-surface-2:      #282520;
    --color-surface-offset: #1e1c19;
    --color-surface-dynamic: #302d28;
    --color-divider:        #3a3630;
    --color-border:         #4a453e;
    --color-text:           #dcd5cb;
    --color-text-muted:     #8a8178;
    --color-text-faint:     #5e5850;
    --color-text-inverse:   #1a1816;
    --color-primary:        #d4845e;
    --color-primary-hover:  #e09570;
    --color-primary-active: #c07048;
    --color-primary-highlight: #3a302a;
    --color-applebox:       #d4845e;
    --color-soapbox:        #d4a84e;
    --color-sandbox:        #7ab28a;
    --shadow-sm: 0 1px 2px oklch(0 0 0 / 0.25);
    --shadow-md: 0 4px 12px oklch(0 0 0 / 0.35);
    --shadow-lg: 0 12px 32px oklch(0 0 0 / 0.45);
  }
}

/* ===========================================
   BASE STYLES
   =========================================== */
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);
  overflow-x: hidden;
}

img, picture, video, canvas, svg { display: block; max-width: 100%; height: auto; }
ul[role="list"], ol[role="list"] { list-style: none; }
input, button, textarea, select { font: inherit; color: inherit; }

h1, h2, h3, h4, h5, h6 { text-wrap: balance; line-height: 1.15; }
p, li, figcaption { text-wrap: pretty; max-width: 72ch; }

::selection {
  background: oklch(from var(--color-primary) l c h / 0.25);
  color: var(--color-text);
}

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

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

button { cursor: pointer; background: none; border: none; }
table { border-collapse: collapse; width: 100%; }

a, button, [role="button"], [role="link"], input, textarea, select {
  transition: color var(--transition-interactive),
              background var(--transition-interactive),
              border-color var(--transition-interactive),
              box-shadow 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;
}