/* ==========================================================================
   DESIGN TOKENS — LIGHT / DARK
   Every colour in the theme comes from these variables. Dark mode is switched
   by the `cu-dark-mode` class on <html> (set in <head> by theme-init.js, so
   there is no white flash). `html[data-theme="dark"]` is supported as well.
   ========================================================================== */

:root {
  color-scheme: light;

  /* Surfaces */
  --cu-bg-main: #f4f5f7;        /* page canvas */
  --cu-bg-surface: #ffffff;     /* cards, header */
  --cu-bg-elevated: #eceef2;    /* nav bar, inputs, hover */
  --cu-header-bg: #ffffff;
  --cu-border: #dfe2e8;

  /* Text */
  --cu-text-main: #16181d;
  --cu-text-muted: #5d6573;

  /* Accents */
  --cu-link: #1463c7;
  --cu-link-hover: #0b4a99;
  --cu-accent: #1463c7;
  --cu-accent-contrast: #ffffff;
  --cu-accent-warm: #9a6700;    /* tag labels etc. (readable gold on light) */
  --cu-buy: #ffd21f;
  --cu-buy-text: #111111;

  --cu-media-bg: #0c0d10;
  --cu-shadow: 0 1px 2px rgb(16 24 40 / 6%), 0 1px 3px rgb(16 24 40 / 10%);
  --cu-shadow-hover: 0 10px 24px rgb(16 24 40 / 14%);
  --cu-radius: 12px;
  --cu-radius-sm: 8px;
  --cu-font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --cu-container: 1440px;
  --cu-gutter: clamp(16px, 3vw, 32px);

  /* Map Olivero's own variables onto ours so core components follow along */
  --color-text-neutral-loud: var(--cu-text-main);
  --color-text-neutral-medium: var(--cu-text-main);
  --color-text-neutral-soft: var(--cu-text-muted);
  --color-text-primary-medium: var(--cu-link);
  --color-text-primary-loud: var(--cu-link-hover);
  --font-sans: var(--cu-font);
}

html.cu-dark-mode,
html[data-theme="dark"] {
  color-scheme: dark;

  --cu-bg-main: #0f1115;
  --cu-bg-surface: #171a21;
  --cu-bg-elevated: #20242d;
  --cu-header-bg: #13161c;
  --cu-border: #2a2f3a;

  --cu-text-main: #e8eaef;
  --cu-text-muted: #9aa3b2;

  --cu-link: #6cb2ff;
  --cu-link-hover: #a3cfff;
  --cu-accent: #4d9fff;
  --cu-accent-contrast: #0b0d11;
  --cu-accent-warm: #f5c518;

  --cu-shadow: 0 1px 2px rgb(0 0 0 / 40%);
  --cu-shadow-hover: 0 12px 28px rgb(0 0 0 / 55%);

  /* Olivero greys/whites → dark equivalents */
  --color--white: var(--cu-bg-surface);
  --color--gray-100: var(--cu-bg-main);
  --color--gray-95: var(--cu-bg-elevated);
  --color--gray-90: var(--cu-border);
  --color--gray-70: #5d6573;
  --color--gray-65: #6f7888;
  --color--gray-60: #8a93a3;
  --color--gray-45: var(--cu-text-muted);
  --color--gray-20: var(--cu-text-main);
  --color--gray-10: var(--cu-text-main);
  --color--gray-5: var(--cu-text-main);
}

/* Paint the canvas immediately (runs before body renders) */
html {
  background-color: var(--cu-bg-main);
  color: var(--cu-text-main);
}

/* ==========================================================================
   LIGHT / DARK TOGGLE BUTTON
   ========================================================================== */
.cu-theme-toggle {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 6px;
  margin: 0;
  padding: 6px 14px;
  cursor: pointer;
  color: var(--cu-text-main);
  border: 1px solid var(--cu-border);
  border-radius: 999px;
  background: var(--cu-bg-elevated);
  font: 600 0.875rem/1.2 var(--cu-font);
  transition: background-color 0.15s, border-color 0.15s;
}

.cu-theme-toggle:hover {
  border-color: var(--cu-text-muted);
}

.cu-theme-toggle:focus-visible {
  outline: 2px solid var(--cu-accent);
  outline-offset: 2px;
}

/* Show "Dark" + moon in light mode, "Light" + sun in dark mode */
.cu-theme-toggle__icon--sun,
.cu-theme-toggle__label--to-light {
  display: none;
}

html.cu-dark-mode .cu-theme-toggle__icon--sun,
html.cu-dark-mode .cu-theme-toggle__label--to-light,
html[data-theme="dark"] .cu-theme-toggle__icon--sun,
html[data-theme="dark"] .cu-theme-toggle__label--to-light {
  display: inline;
}

html.cu-dark-mode .cu-theme-toggle__icon--moon,
html.cu-dark-mode .cu-theme-toggle__label--to-dark,
html[data-theme="dark"] .cu-theme-toggle__icon--moon,
html[data-theme="dark"] .cu-theme-toggle__label--to-dark {
  display: none;
}

html.cu-dark-mode .cu-theme-toggle__icon--sun {
  color: #f5c518;
}