/* Marvel palette: comic-cover black, Marvel red, gold. Fonts are self-hosted and open source (OFL):
   Bebas Neue for display, Inter for text. Dark is the default, like a cinema; light mode is the paper comic. */
@font-face { font-family: "Bebas Neue"; src: url("fonts/bebas-neue-400.woff2") format("woff2"); font-weight: 400; font-display: swap; }
@font-face { font-family: "Inter"; src: url("fonts/inter-400.woff2") format("woff2"); font-weight: 400; font-display: swap; }
@font-face { font-family: "Inter"; src: url("fonts/inter-700.woff2") format("woff2"); font-weight: 700; font-display: swap; }

:root {
  color-scheme: dark light;
  --bg: #0B0B0C;
  --panel: #17171A;
  --fg: #F5F5F2;
  --muted: #B9B9B3;
  --red: #EC1D24;        /* Marvel red: fills and large display text only */
  --red-fill: #C8101A;   /* button fill, white text passes AA */
  --red-text: #FF6B70;   /* red as small text on dark */
  --gold: #FFC20E;
  --rule: #34343A;
  --border: #77777F;
  --focus: #FFC20E;
  --display: "Bebas Neue", Impact, "Arial Narrow Bold", sans-serif;
  --sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --slam: cubic-bezier(0.2, 1.2, 0.3, 1);
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #F6F4EF;
    --panel: #FFFFFF;
    --fg: #111111;
    --muted: #4F4F55;
    --red-text: #B3000A;
    --rule: #D5D0C4;
    --border: #77746C;
    --focus: #0B3FBF;
  }
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: 16px; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 1rem/1.5 var(--sans);
  -webkit-font-smoothing: antialiased;
}
::selection { background: var(--gold); color: #111; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }
[hidden] { display: none !important; }

.wrap { width: min(100%, 52rem); margin: 0 auto; padding: 0 16px; }
.skip { position: absolute; left: 16px; top: -120px; z-index: 10; padding: 12px 16px; background: var(--gold); color: #111; font-weight: 700; }
.skip:focus { top: 12px; }

/* Masthead: red cover block with halftone dots, the comic-book texture. */
.masthead {
  position: relative;
  background: var(--red);
  color: #fff;
  padding: 28px 0 24px;
  overflow: hidden;
}
.masthead::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(rgba(0, 0, 0, 0.32) 1.4px, transparent 1.9px) 0 0 / 9px 9px;
  -webkit-mask-image: linear-gradient(115deg, transparent 20%, #000 100%);
  mask-image: linear-gradient(115deg, transparent 20%, #000 100%);
  pointer-events: none;
}
.masthead .wrap { position: relative; }
.eyebrow { margin: 0 0 4px; font: 700 0.75rem/1 var(--sans); letter-spacing: 0.14em; text-transform: uppercase; color: #fff; }
h1 { margin: 0; font: 400 clamp(3.25rem, 17vw, 6.5rem)/0.88 var(--display); letter-spacing: 0.01em; text-transform: uppercase; }
h1 .sub {
  display: inline-block;
  margin-top: 8px;
  padding: 4px 12px 2px;
  background: #0B0B0C;
  color: #fff;
  font-size: 0.42em;
  letter-spacing: 0.12em;
  transform: skewX(-10deg);
}
h1 .sub span { display: inline-block; transform: skewX(10deg); }

.takeaway { margin: 18px 0 0; max-width: 36ch; font-size: 1.0625rem; font-weight: 700; }
.takeaway b { font: 400 1.75rem/1 var(--display); letter-spacing: 0.02em; }

.skip-quiz {
  display: block;
  width: 100%;
  min-height: 52px;
  margin-top: 18px;
  padding: 8px 16px;
  background: #0B0B0C;
  color: #fff;
  border: 2px solid #fff;
  font: inherit;
  text-align: left;
  cursor: pointer;
  box-shadow: 4px 4px 0 rgba(0, 0, 0, 0.55);
  transition: transform 160ms var(--slam), box-shadow 160ms var(--slam);
}
.skip-quiz b { display: block; font: 400 1.5rem/1 var(--display); letter-spacing: 0.04em; text-transform: uppercase; }
.skip-quiz span { font-size: 0.875rem; color: #E8E8E4; }
@media (hover: hover) { .skip-quiz:hover { transform: translate(-2px, -2px); box-shadow: 6px 6px 0 rgba(0, 0, 0, 0.55); } }
@media (min-width: 40rem) { .skip-quiz { width: auto; min-width: 16rem; } }

/* Tabs: comic panel strip. */
.tabs { display: flex; flex-wrap: wrap; gap: 0; margin: 0; padding: 0; border-bottom: 3px solid var(--red); background: var(--bg); position: sticky; top: 0; z-index: 3; }
.tabs button {
  flex: 1 1 auto;
  min-height: 48px;
  padding: 4px 4px 0;
  background: none;
  border: 0;
  color: var(--muted);
  font: 400 1.125rem/1 var(--display);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  cursor: pointer;
}
.tabs button[aria-selected="true"] { background: var(--red-fill); color: #fff; }

main { padding-bottom: 32px; }
.panel { padding-top: 20px; }
.js .panel { display: none; }
.js .panel.is-open { display: block; animation: slam 320ms var(--slam) both; }
@keyframes slam { from { opacity: 0; transform: translateY(10px) scale(0.985); } }

h2 { margin: 0 0 8px; font: 400 2rem/1 var(--display); letter-spacing: 0.03em; text-transform: uppercase; }
h2::after { content: ""; display: block; width: 3rem; height: 4px; margin-top: 6px; background: var(--red); }
p { margin: 8px 0; }
.muted { color: var(--muted); }

/* Countdown */
.countdown { display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap; padding: 16px; background: var(--panel); border-left: 6px solid var(--gold); }
.days { font: 400 4.5rem/0.9 var(--display); color: var(--gold); }
.countdown p { margin: 0; }
@media (prefers-color-scheme: light) { .days { color: #111; } }

/* Quiz */
fieldset { margin: 20px 0 0; padding: 0; border: 0; min-width: 0; }
legend { padding: 0; margin-bottom: 8px; font-weight: 700; font-size: 1.25rem; line-height: 1.3; }
.opts, .chips { display: flex; flex-wrap: wrap; gap: 8px; }
.q-progress { margin: 20px 0 0; font: 400 1.125rem/1 var(--display); letter-spacing: 0.08em; color: var(--red-text); }
.q-nav { margin-top: 20px; }
.btn:disabled { opacity: 0.45; cursor: not-allowed; box-shadow: none; transform: none; }

.opts button, .chips button, .btn {
  min-height: 44px;
  padding: 6px 16px;
  background: var(--panel);
  color: var(--fg);
  border: 2px solid var(--border);
  font: 700 0.9375rem/1.2 var(--sans);
  cursor: pointer;
  transition: transform 160ms var(--slam), box-shadow 160ms var(--slam), background-color 160ms;
}
.opts button { flex: 1 1 auto; }
.opts button[aria-pressed="true"], .chips button[aria-pressed="true"], .btn.solid {
  background: var(--red-fill);
  border-color: var(--red-fill);
  color: #fff;
  box-shadow: 3px 3px 0 var(--gold);
}
@media (hover: hover) {
  .opts button:hover, .chips button:hover, .btn:hover { transform: translate(-1px, -1px); box-shadow: 3px 3px 0 var(--red); }
}

/* Recommendation card */
.rec { margin-top: 28px; padding: 16px; background: var(--panel); border-top: 4px solid var(--red); }
.note { margin: 12px 0; padding: 4px 12px; border-left: 4px solid var(--gold); }
.hints { margin: 12px 0 0; padding: 0; list-style: none; counter-reset: h; }
.hints li { counter-increment: h; padding: 10px 0 10px 40px; position: relative; border-top: 1px solid var(--rule); }
.hints li::before { content: counter(h); position: absolute; left: 0; top: 8px; font: 400 1.5rem/1 var(--display); color: var(--red-text); }
.hints strong { display: block; }
.hints span { color: var(--muted); font-size: 0.9375rem; }
.controls { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; margin: 16px 0 0; }
label { font-size: 0.9375rem; color: var(--muted); }
select, input[type="search"] {
  min-height: 44px;
  max-width: 100%;
  padding: 0 10px;
  background: var(--panel);
  color: var(--fg);
  border: 2px solid var(--border);
  font: inherit;
}
label select, label input { margin-left: 6px; }

/* Lists */
.chips { margin-top: 4px; }
.count { margin: 16px 0 0; padding-bottom: 8px; font-weight: 700; border-bottom: 1px solid var(--rule); }
.list { margin: 0; padding: 0 0 8px; list-style: none; }
.list li {
  display: grid;
  grid-template-columns: 2.75rem 1fr;
  column-gap: 8px;
  padding: 12px 0;
  border-bottom: 1px solid var(--rule);
  overflow-wrap: anywhere;
  animation: slam 380ms var(--slam) both;
  animation-delay: calc(var(--i, 0) * 22ms);
}
.list .num { grid-row: span 2; font: 400 1.75rem/1 var(--display); color: var(--red-text); text-align: right; padding-right: 4px; }
.list .title { font-weight: 700; line-height: 1.3; }
.list .meta { font-size: 0.875rem; color: var(--muted); font-variant-numeric: tabular-nums; }
.list .prep { display: inline-block; padding: 0 6px; background: var(--gold); color: #111; font-weight: 700; font-size: 0.75rem; letter-spacing: 0.08em; text-transform: uppercase; }
.list .is-prep .title { border-left: 0; }
.empty { padding: 16px 0; color: var(--muted); }

/* Post-credits */
.warn { padding: 12px 16px; border: 2px solid var(--gold); }
.pc-row { padding: 10px 0; border-bottom: 1px solid var(--rule); }
.pc-row .key { display: inline-block; margin-left: 6px; padding: 0 6px; background: var(--gold); color: #111; font-size: 0.75rem; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; }

footer { padding: 24px 0 40px; border-top: 3px solid var(--red); color: var(--muted); font-size: 0.875rem; }

@media (min-width: 40rem) {
  .masthead { padding: 48px 0 36px; }
  .tabs button { flex: 0 0 auto; padding: 4px 24px 0; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
}