/* base.css — Mr. Margin design tokens + reset */

/* ─── TYPE SCALE ─────────────────────────────────────────────────── */
: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);
  --text-hero: clamp(3rem,     0.5rem  + 7vw,    8rem);
}

/* ─── SPACING ─────────────────────────────────────────────────────── */
: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;
}

/* ─── MR. MARGIN COLOUR PALETTE ──────────────────────────────────── */
/* 
  Brand: Mr. Margin
  Primary: MM Black (#0A0A0A) — primary text and branding
  Accent:  Profit Yellow (#FFD23F) — CTAs, highlights
  Surface: Paper White (#F7F7F7) — light background
  Data:    Ink Blue (#0C3C78) — charts, data callouts
  Accent2: Margin Mint (#B6F2D4) — diagram highlights (sparingly)
*/

:root, [data-theme="light"] {
  /* Surfaces */
  --color-bg:              #F7F7F7;
  --color-surface:         #FFFFFF;
  --color-surface-2:       #F0F0F0;
  --color-surface-offset:  #E8E8E8;
  --color-divider:         #D8D8D8;
  --color-border:          #CCCCCC;

  /* Text */
  --color-text:            #0A0A0A;
  --color-text-muted:      #555555;
  --color-text-faint:      #999999;
  --color-text-inverse:    #F7F7F7;

  /* Primary (MM Black) */
  --color-primary:         #0A0A0A;
  --color-primary-hover:   #2A2A2A;
  --color-primary-active:  #404040;
  --color-primary-highlight: #E8E8E8;

  /* Accent (Profit Yellow) */
  --color-accent:          #FFD23F;
  --color-accent-hover:    #FFBE00;
  --color-accent-active:   #E6A800;
  --color-accent-text:     #0A0A0A; /* text ON yellow bg */

  /* Data colours */
  --color-blue:            #0C3C78;
  --color-mint:            #B6F2D4;

  /* Radius */
  --radius-sm:   0.25rem;
  --radius-md:   0.375rem;
  --radius-lg:   0.5rem;
  --radius-xl:   0.75rem;
  --radius-full: 9999px;

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

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
  --shadow-lg: 0 12px 32px rgba(0,0,0,0.12);

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

  /* Fonts */
  --font-display: 'Clash Display', 'Helvetica Neue', sans-serif;
  --font-body:    'Satoshi', 'Helvetica Neue', sans-serif;
}

/* ─── DARK MODE ───────────────────────────────────────────────────── */
[data-theme="dark"] {
  --color-bg:              #0A0A0A;
  --color-surface:         #141414;
  --color-surface-2:       #1A1A1A;
  --color-surface-offset:  #111111;
  --color-divider:         #2A2A2A;
  --color-border:          #333333;
  --color-text:            #F0F0F0;
  --color-text-muted:      #999999;
  --color-text-faint:      #555555;
  --color-text-inverse:    #0A0A0A;
  --color-primary:         #F0F0F0;
  --color-primary-hover:   #FFFFFF;
  --color-primary-active:  #D0D0D0;
  --color-primary-highlight: #2A2A2A;
  --color-accent:          #FFD23F;
  --color-accent-hover:    #FFBE00;
  --color-accent-active:   #E6A800;
  --color-accent-text:     #0A0A0A;
  --color-blue:            #4A90D9;
  --color-mint:            #4FBFA0;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.4);
  --shadow-lg: 0 12px 32px rgba(0,0,0,0.5);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --color-bg:              #0A0A0A;
    --color-surface:         #141414;
    --color-surface-2:       #1A1A1A;
    --color-surface-offset:  #111111;
    --color-divider:         #2A2A2A;
    --color-border:          #333333;
    --color-text:            #F0F0F0;
    --color-text-muted:      #999999;
    --color-text-faint:      #555555;
    --color-text-inverse:    #0A0A0A;
    --color-primary:         #F0F0F0;
    --color-primary-hover:   #FFFFFF;
    --color-primary-active:  #D0D0D0;
    --color-primary-highlight: #2A2A2A;
    --color-accent:          #FFD23F;
    --color-accent-hover:    #FFBE00;
    --color-accent-active:   #E6A800;
    --color-accent-text:     #0A0A0A;
  }
}

/* ─── RESET ───────────────────────────────────────────────────────── */
*, *::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;
  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[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: 1.1; }
p, li, figcaption { text-wrap: pretty; max-width: 72ch; }

::selection { background: #FFD23F; color: #0A0A0A; }

:focus-visible {
  outline: 2px solid var(--color-accent);
  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;
}