/* Buffet Clearers — campus data zine: warm paper, ink, one hungry red accent */

:root {
  --paper: #ebe4d8;
  --paper2: #e2d8c8;
  --ink: #0f0f0f;
  --ink-muted: #3a3530;
  --accent: #b32014;
  --accent-dim: #8a1810;
  --line: #1a1614;
  --shadow: rgba(20, 12, 8, 0.18);
  --mono: "IBM Plex Mono", ui-monospace, monospace;
  --serif: "Newsreader", "Georgia", serif;
  --display: "Bricolage Grotesque", "Segoe UI", system-ui, sans-serif;
  --r-pad: clamp(1rem, 4vw, 2.5rem);
  --max: 78rem;
}

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

html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  .card,
  .title__line,
  .section {
    animation: none !important;
  }
}

body {
  margin: 0;
  font-family: var(--serif);
  font-size: 1.125rem;
  line-height:1.5;
  color: var(--ink);
  background: var(--paper);
  background-image: linear-gradient(
      160deg,
      #f0e9de 0%,
      #e5dcc8 40%,
      #ddd1be 100%
    );
  min-height: 100vh;
}

.noise {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 50;
  opacity: 0.055;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  mix-blend-mode: multiply;
}

.skip {
  position: absolute;
  left: -9999px;
  z-index: 100;
  padding: 0.5rem 1rem;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--mono);
  font-size: 0.85rem;
}

.skip:focus {
  left: 1rem;
  top: 1rem;
}

/* ——— Header ——— */

.top {
  position: relative;
  padding: clamp(2.5rem, 8vw, 5rem) var(--r-pad) 2.5rem;
  border-bottom: 3px solid var(--line);
  background: linear-gradient(
    180deg,
    rgba(255, 252, 248, 0.35) 0%,
    transparent 100%
  );
}

.top__inner {
  max-width: var(--max);
  margin: 0 auto;
}

.kicker {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink-muted);
  margin: 0 0 1.25rem;
}

.title {
  font-family: var(--display);
  font-weight: 800;
  font-size: clamp(2.75rem, 9vw, 4.5rem);
  line-height: 0.95;
  letter-spacing: -0.03em;
  margin: 0 0 1.25rem;
  font-variation-settings: "opsz" 48;
}

.title__line {
  display: block;
}

.title__line--red {
  color: var(--accent);
  text-shadow: 2px 2px 0 var(--ink);
  transform: rotate(-0.5deg);
  display: inline-block;
}

.lede {
  max-width: 32em;
  font-size: 1.2rem;
  color: var(--ink-muted);
  margin: 0 0 0.5rem;
}

.meta {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--accent-dim);
  margin: 0.75rem 0 0;
}

/* ——— Sticky rail ——— */

.rail {
  position: sticky;
  top: 0;
  z-index: 40;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.25rem;
  padding: 0.85rem var(--r-pad);
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid color-mix(in srgb, var(--line) 30%, transparent);
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.rail a {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: border-color 0.15s ease, color 0.15s ease;
}

.rail a:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.rail a:focus {
  outline: none;
}

.rail a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

/* ——— Main ——— */

.main {
  max-width: var(--max);
  margin: 0 auto;
  padding: 2.5rem var(--r-pad) 4rem;
}

.load-error {
  font-family: var(--mono);
  font-size: 0.9rem;
  color: var(--accent);
  background: color-mix(in srgb, var(--paper2) 90%, #fff);
  border: 1px dashed var(--accent);
  padding: 1rem 1.25rem;
  margin: 0 0 2rem;
}

.sections {
  display: flex;
  flex-direction: column;
  gap: 3.5rem;
}

/* ——— Sections ——— */

.section {
  animation: section-in 0.7s ease backwards;
  animation-delay: calc(var(--s, 0) * 0.08s);
}

@keyframes section-in {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.section__title {
  font-family: var(--display);
  font-weight: 700;
  font-size: clamp(1.5rem, 3vw, 2rem);
  letter-spacing: -0.02em;
  margin: 0 0 1.5rem;
  padding-bottom: 0.4rem;
  border-bottom: 4px solid var(--line);
  display: inline-block;
}

.section__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

@media (min-width: 52rem) {
  .section__grid {
    grid-template-columns: 1fr 1fr;
    gap: 2rem 2.25rem;
  }

  .section__grid:has(article:only-child) {
    grid-template-columns: 1fr;
  }
}

/* ——— Cards (tear sheets) ——— */

.card {
  --i: 0;
  background: #fffcf7;
  border: 1px solid color-mix(in srgb, var(--line) 22%, white);
  box-shadow: 4px 6px 0 var(--shadow);
  padding: 1rem 1.1rem 1.1rem;
  transform: rotate(calc((var(--i) - 2) * 0.4deg));
  transition: box-shadow 0.2s ease, transform 0.2s ease;
  animation: card-in 0.65s ease backwards;
  animation-delay: calc(var(--i) * 0.07s);
}

@keyframes card-in {
  from {
    opacity: 0;
    transform: translateY(16px) rotate(0deg);
  }
  to {
    opacity: 1;
  }
}

.card:hover {
  box-shadow: 6px 10px 0 var(--shadow);
  transform: translateY(-2px) rotate(0deg) !important;
}

.card__caption {
  font-family: var(--display);
  font-weight: 600;
  font-size: 1.05rem;
  margin: 0 0 0.75rem;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.card__figure {
  margin: 0;
  padding: 0.4rem 0.2rem 0.2rem;
  background: linear-gradient(180deg, #f7f0e6 0%, #fff 12%);
  border: 1px solid #ddd5c8;
}

.card__viz {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.card__echart {
  min-height: 22rem;
  width: 100%;
}

/* Wide heatmaps: pan sideways on small screens so cells keep a minimum size */
.card__echart-scroll {
  width: 100%;
  max-width: 100%;
  overflow-x: auto;
  overflow-y: hidden;
  -webkit-overflow-scrolling: touch;
  touch-action: pan-x pan-y;
  border-radius: 2px;
}

.card__echart--heatmap {
  min-height: 18rem;
  background: #121212;
  border-radius: 4px;
  overflow: hidden;
}

.card__echart--tall {
  min-height: 48rem;
}

.card__echart--hidden {
  display: none;
}

.card__static {
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--ink-muted);
  border: 1px dashed color-mix(in srgb, var(--line) 28%, transparent);
  padding: 0.25rem 0.5rem;
  background: color-mix(in srgb, var(--paper2) 50%, #fff);
}

.card__static summary {
  cursor: pointer;
  user-select: none;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.card__static[open] .card__img {
  margin-top: 0.5rem;
}

/* Composite (most_appreciated) */
.comp-quote {
  font-family: var(--serif);
  font-size: 0.95rem;
  color: var(--ink-muted);
  font-style: italic;
  margin: 0 0 0.35rem;
  line-height: 1.4;
  max-width: 58ch;
}

.comp-grid {
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
  width: 100%;
}

.comp-panel {
  min-height: 12rem;
  width: 100%;
}

.card__img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid #c9bdb0;
}

/* ——— Footer ——— */

.foot {
  max-width: var(--max);
  margin: 0 auto;
  padding: 2rem var(--r-pad) 3rem;
  border-top: 1px solid color-mix(in srgb, var(--line) 25%, transparent);
  font-family: var(--mono);
  font-size: 0.7rem;
  line-height: 1.65;
  color: var(--ink-muted);
}

.foot p {
  margin: 0;
  max-width: 52em;
}

.foot a {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 2px solid var(--accent);
  transition: color 0.15s ease, border-color 0.15s ease;
}

.foot a:hover {
  color: var(--accent);
}

.foot a:focus {
  outline: none;
}

.foot a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.foot code {
  font-size: 0.95em;
  background: rgba(0, 0, 0, 0.06);
  padding: 0.1em 0.35em;
  border-radius: 2px;
}

/* ——— Telegram promo modal ——— */

.tg-modal {
  padding: 0;
  border: none;
  max-width: calc(100vw - 2rem);
  width: min(26rem, 100%);
  background: transparent;
  color: inherit;
  overflow: hidden;
  overscroll-behavior: contain;
}

.tg-modal::backdrop {
  background: color-mix(in srgb, var(--ink) 42%, transparent);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

.tg-modal__panel {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  background: #fffcf7;
  border: 1px solid color-mix(in srgb, var(--line) 22%, white);
  box-shadow: 6px 10px 0 var(--shadow);
  padding: 1.5rem 1.35rem 1.35rem;
  transform: rotate(-0.35deg);
  box-sizing: border-box;
}

.tg-modal__kicker {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-muted);
  margin: 0 0 0.5rem;
}

.tg-modal__title {
  font-family: var(--display);
  font-weight: 800;
  font-size: clamp(1.35rem, 4vw, 1.75rem);
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin: 0 0 0.85rem;
  color: var(--ink);
}

.tg-modal__body {
  font-family: var(--serif);
  font-size: 1.05rem;
  line-height: 1.45;
  color: var(--ink-muted);
  margin: 0 0 1.25rem;
  max-width: 36ch;
  text-wrap: balance;
}

.tg-modal__cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  flex-shrink: 0;
  font-family: var(--mono);
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  text-decoration: none;
  color: #fffcf7;
  background: var(--accent);
  border: 2px solid var(--line);
  padding: 0.65rem 1rem;
  box-shadow: 3px 4px 0 var(--shadow);
  transition: transform 0.12s ease, box-shadow 0.12s ease, background 0.12s ease;
}

.tg-modal__cta:hover {
  background: var(--accent-dim);
  transform: translateY(-1px);
  box-shadow: 4px 6px 0 var(--shadow);
}

.tg-modal__cta:focus {
  outline: none;
}

.tg-modal__cta:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.tg-modal__note {
  font-family: var(--mono);
  font-size: 0.5rem;
  line-height: 1.3;
  letter-spacing: 0.04em;
  color: var(--ink-muted);
  margin: 0.55rem 0 0;
  max-width: 26ch;
  opacity: 0.88;
}

@media (prefers-reduced-motion: reduce) {
  .tg-modal__cta,
  .tg-modal__cta:hover {
    transition: none;
    transform: none;
  }
}