/* =====================================================================
 Plinth Design System (Buzzle Local edition)
===================================================================== */
@import url("https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@500;600;700&display=swap");
@import url("https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&display=swap");

:root {
  --color-canvas: #ffffff;
  --color-paper: #faf7f2;
  --color-ink: #111111;
  --color-mute: #5a5a5a;
  --color-hairline: #ebe6dd;
  --color-coral: #8c52ff;
  --color-coral-soft: #ece2ff;
  --color-coral-deep: #6a2fe0;

  --surface-page: var(--color-canvas);
  --surface-face: var(--color-paper);
  --surface-tint: var(--color-coral-soft);
  --text-primary: var(--color-ink);
  --text-secondary: var(--color-mute);
  --text-on-coral: #ffffff;
  --border-strong: var(--color-ink);
  --border-quiet: var(--color-hairline);
  --accent: var(--color-coral);
  --focus-ring: var(--color-coral);

  --font-display: "Space Grotesk", system-ui, sans-serif;
  --font-body: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;

  --text-display-xl: 4rem;
  --text-display-lg: 3rem;
  --text-headline-lg: 2.25rem;
  --text-headline-md: 1.5rem;
  --text-title-md: 1.125rem;
  --text-body-lg: 1.0625rem;
  --text-body-md: 1rem;
  --text-body-sm: 0.875rem;
  --text-label-sm: 0.75rem;

  --leading-tight: 1.1;
  --leading-snug: 1.3;
  --leading-normal: 1.55;
  --tracking-tight: -0.02em;
  --tracking-eyebrow: 0.08em;

  --space-2xs: 0.25rem;
  --space-xs: 0.5rem;
  --space-sm: 0.75rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4.5rem;

  --layout-max: 1180px;
  --layout-gutter: 1.5rem;

  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-xl: 24px;
  --radius-full: 999px;

  --border-w: 2px;
  --border-w-hair: 1px;
  --focus-w: 3px;

  --press-rest: 4px;
  --press-hover: 6px;
  --press-active: 0px;

  --ease-press: cubic-bezier(0.2, 0.7, 0.2, 1);
  --dur-press: 120ms;
  --dur-base: 180ms;
}

*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--surface-page);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: var(--text-body-md);
  line-height: var(--leading-normal);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img, svg { display: block; max-width: 100%; }
::selection { background: var(--color-coral-soft); color: var(--color-ink); }
a { color: inherit; }

.display, .headline {
  font-family: var(--font-display);
  letter-spacing: var(--tracking-tight);
  line-height: var(--leading-tight);
  margin: 0;
}
.display-xl { font-size: var(--text-display-xl); font-weight: 700; }
.display-lg { font-size: var(--text-display-lg); font-weight: 700; }
.headline-lg { font-size: var(--text-headline-lg); font-weight: 600; }
.headline-md { font-size: var(--text-headline-md); font-weight: 600; }
.title-md { font-family: var(--font-display); font-size: var(--text-title-md); font-weight: 600; line-height: var(--leading-snug); margin: 0; }

.body-lg { font-size: var(--text-body-lg); }
.body-sm { font-size: var(--text-body-sm); color: var(--text-secondary); }

.eyebrow {
  display: inline-block;
  font-family: var(--font-body);
  font-size: var(--text-label-sm);
  font-weight: 600;
  letter-spacing: var(--tracking-eyebrow);
  text-transform: uppercase;
  color: var(--text-secondary);
}

.container {
  width: 100%;
  max-width: var(--layout-max);
  margin-inline: auto;
  padding-inline: var(--layout-gutter);
}

.grid { display: grid; gap: var(--space-lg); }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
@media (max-width: 820px) { .grid-3, .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 560px) { .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; } }

.divider { height: var(--border-w-hair); background: var(--border-quiet); border: 0; }

/* Press primitive */
.press { position: relative; display: inline-block; background: var(--color-ink); border-radius: var(--radius-md); isolation: isolate; }
.press__face {
  position: relative; display: block;
  background: var(--surface-face); color: var(--text-primary);
  border: var(--border-w) solid var(--border-strong);
  border-radius: var(--radius-md);
  transform: translateY(calc(-1 * var(--press-rest)));
  transition: transform var(--dur-press) var(--ease-press), background-color var(--dur-base) var(--ease-press);
}
.press:hover .press__face { transform: translateY(calc(-1 * var(--press-hover))); }
.press:active .press__face { transform: translateY(var(--press-active)); }

/* Button */
.btn {
  -webkit-appearance: none; appearance: none;
  position: relative; display: inline-flex; align-items: center; justify-content: center; gap: var(--space-xs);
  font-family: var(--font-body); font-size: var(--text-body-lg); font-weight: 600; line-height: 1;
  background: var(--color-ink); color: var(--text-primary); border: 0; border-radius: var(--radius-md);
  padding: 0; cursor: pointer; text-decoration: none;
}
.btn__face {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--space-xs);
  padding: 0.85em 1.6em;
  background: var(--surface-face); color: var(--text-primary);
  border: var(--border-w) solid var(--border-strong);
  border-radius: var(--radius-md);
  transform: translateY(calc(-1 * var(--press-rest)));
  transition: transform var(--dur-press) var(--ease-press), background-color var(--dur-base) var(--ease-press);
}
.btn:hover .btn__face { transform: translateY(calc(-1 * var(--press-hover))); }
.btn:active .btn__face { transform: translateY(var(--press-active)); }
.btn:focus-visible { outline: var(--focus-w) solid var(--focus-ring); outline-offset: 3px; }

.btn--primary .btn__face { background: var(--color-coral); color: var(--text-on-coral); }
.btn--secondary .btn__face { background: var(--surface-face); color: var(--text-primary); }
.btn--ghost { background: transparent; }
.btn--ghost .btn__face { background: var(--surface-page); border-color: var(--border-strong); transform: translateY(0); }
.btn--ghost:hover .btn__face { background: var(--surface-face); transform: translateY(0); }
.btn--sm .btn__face { font-size: var(--text-body-sm); padding: 0.65em 1.15em; }
.btn--lg .btn__face { font-size: 1.125rem; padding: 1em 1.85em; }

/* Input */
.field { display: flex; flex-direction: column; gap: var(--space-xs); }
.field__label { font-size: var(--text-body-sm); font-weight: 600; }
.field__hint { font-size: var(--text-label-sm); color: var(--text-secondary); }
.input {
  -webkit-appearance: none; appearance: none; font: inherit;
  font-family: var(--font-body); font-size: var(--text-body-md);
  background: var(--surface-page); color: var(--text-primary);
  border: var(--border-w) solid var(--border-strong);
  border-radius: var(--radius-md); padding: 0.85em 1em; width: 100%;
  transition: box-shadow var(--dur-base) var(--ease-press), background-color var(--dur-base) var(--ease-press);
}
.input::placeholder { color: var(--text-secondary); }
.input:hover { background: var(--surface-face); }
.input:focus, .input:focus-visible { outline: 0; box-shadow: 0 0 0 var(--focus-w) var(--focus-ring); }

/* Card */
.card { position: relative; background: var(--color-ink); border-radius: var(--radius-md); }
.card__face {
  position: relative; display: flex; flex-direction: column; gap: var(--space-md);
  background: var(--surface-page); color: var(--text-primary);
  border: var(--border-w) solid var(--border-strong);
  border-radius: var(--radius-md); padding: var(--space-lg);
  transform: translateY(calc(-1 * var(--press-rest)));
  transition: transform var(--dur-press) var(--ease-press);
}
.card--paper .card__face { background: var(--surface-face); }
.card--accent .card__face { background: var(--color-coral-soft); }
.card--interactive { cursor: pointer; }
.card--interactive:hover .card__face { transform: translateY(calc(-1 * var(--press-hover))); }
.card--interactive:active .card__face { transform: translateY(var(--press-active)); }
.card__title { font-family: var(--font-display); font-size: var(--text-title-md); font-weight: 600; margin: 0; }

/* Checkbox */
.check { display: inline-flex; align-items: center; gap: var(--space-sm); cursor: pointer; user-select: none; font-size: var(--text-body-md); }
.check__input { position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
.check__box { position: relative; display: inline-block; width: 1.35em; height: 1.35em; background: var(--color-ink); border-radius: var(--radius-sm); flex: 0 0 auto; }
.check__box::before {
  content: ""; position: absolute; inset: 0;
  background: var(--surface-page);
  border: var(--border-w) solid var(--border-strong);
  border-radius: var(--radius-sm);
  transform: translateY(calc(-1 * var(--press-rest)));
  transition: transform var(--dur-press) var(--ease-press), background-color var(--dur-base) var(--ease-press);
}
.check__input:checked + .check__box::after { border-color: #ffffff !important; }
.check__box::after {
  content: ""; position: absolute; top: 50%; left: 50%;
  width: 0.55em; height: 0.3em;
  border-left: 2.5px solid var(--color-ink);
  border-bottom: 2.5px solid var(--color-ink);
  transform: translate(-55%, calc(-75% - var(--press-rest))) rotate(-45deg) scale(0);
  transition: transform var(--dur-base) var(--ease-press); z-index: 1;
}
.check__input:checked + .check__box::before { background: var(--color-coral); }
.check__input:checked + .check__box::after { transform: translate(-55%, calc(-75% - var(--press-rest))) rotate(-45deg) scale(1); }

/* Tabs */
.tabs { position: relative; display: inline-flex; align-items: stretch; background: var(--color-ink); border-radius: var(--radius-md); padding: 4px; gap: 4px; }
.tabs__tab {
  -webkit-appearance: none; appearance: none; position: relative;
  display: inline-flex; align-items: center; justify-content: center; gap: var(--space-xs);
  font-family: var(--font-body); font-size: var(--text-body-sm); font-weight: 600;
  color: var(--surface-face); background: transparent; border: 0;
  border-radius: calc(var(--radius-md) - 4px); padding: 0.6em 1.1em; cursor: pointer;
  transition: color var(--dur-base) var(--ease-press), background-color var(--dur-base) var(--ease-press);
}
.tabs__tab:hover { color: var(--color-canvas); }
.tabs__tab[aria-selected="true"], .tabs__tab.is-active {
  background: var(--surface-face); color: var(--text-primary);
  border: var(--border-w) solid var(--border-strong);
  transform: translateY(calc(-1 * var(--press-rest)));
}

/* Press tile */
.press-tile { position: relative; display: block; background: var(--color-ink); border-radius: var(--radius-md); text-decoration: none; color: inherit; }
.press-tile__face {
  position: relative; display: flex; flex-direction: column; gap: var(--space-sm); padding: var(--space-lg); min-width: 11rem;
  background: var(--surface-face); color: var(--text-primary);
  border: var(--border-w) solid var(--border-strong);
  border-radius: var(--radius-md);
  transform: translateY(calc(-1 * var(--press-rest)));
  transition: transform var(--dur-press) var(--ease-press);
}
.press-tile:hover .press-tile__face { transform: translateY(calc(-1 * var(--press-hover))); }
.press-tile:active .press-tile__face { transform: translateY(var(--press-active)); }
.press-tile__head { display: flex; align-items: center; justify-content: space-between; gap: var(--space-md); }
.press-tile__label { font-family: var(--font-body); font-size: var(--text-label-sm); font-weight: 600; letter-spacing: var(--tracking-eyebrow); text-transform: uppercase; color: var(--text-secondary); }
.press-tile__icon { display: inline-flex; align-items: center; justify-content: center; width: 1.85rem; height: 1.85rem; border: var(--border-w-hair) solid var(--border-strong); border-radius: var(--radius-sm); background: var(--color-canvas); }
.press-tile__icon .icon { width: 1.05rem; height: 1.05rem; stroke-width: 2; }
.press-tile__value { font-family: var(--font-display); font-size: 2rem; font-weight: 700; line-height: 1; letter-spacing: var(--tracking-tight); }
.press-tile__caption { font-size: var(--text-body-sm); color: var(--text-secondary); }
.press-tile--accent .press-tile__face { background: var(--color-coral-soft); }
.press-tile--inverse .press-tile__face { background: var(--color-coral); color: #ffffff; }
.press-tile--inverse .press-tile__value { color: #ffffff; }
.press-tile--inverse .press-tile__label, .press-tile--inverse .press-tile__caption { color: rgba(255,255,255,0.85); }
.press-tile--inverse .press-tile__icon { background: rgba(255,255,255,0.18); border-color: rgba(255,255,255,0.6); color: #ffffff; }

/* Badge */
.badge { display: inline-flex; align-items: center; gap: var(--space-2xs); font-size: var(--text-label-sm); font-weight: 600; letter-spacing: 0.02em; padding: 0.35em 0.7em; background: var(--surface-face); color: var(--text-primary); border: var(--border-w-hair) solid var(--border-strong); border-radius: var(--radius-full); }
.badge--accent { background: var(--color-coral-soft); }
.badge--dot::before { content: ""; width: 0.45em; height: 0.45em; background: var(--color-coral); border-radius: var(--radius-full); }

.icon { display: inline-block; width: 1.1em; height: 1.1em; vertical-align: middle; color: currentColor; stroke-width: 2; }

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