/* DEAD CHANNEL — declassified-file aesthetic.
   Palette is act-driven: --accent is reassigned per act by the app. */

:root {
  --ground:      #0c0d0e;
  --ground-2:    #131416;
  --panel:       #17191b;
  --panel-2:     #1d2023;
  --line:        #2c3034;
  --line-bright: #3d4247;
  --ink:         #d9d4c8;
  --ink-dim:     #9a958a;
  --ink-faint:   #6d6960;
  --accent:      #c8862c;
  --accent-ink:  #0c0d0e;
  --good:        #6fae7e;
  --bad:         #c96a5c;
  --warn:        #c8a44a;

  --serif: ui-serif, Georgia, "Iowan Old Style", "Palatino Linotype", serif;
  --mono:  ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;

  --gutter: clamp(16px, 4vw, 40px);
  --measure: 66ch;
  --radius: 3px;
  --dur: 180ms;
}

@media (prefers-reduced-motion: reduce) {
  :root { --dur: 0ms; }
  * { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}

* { box-sizing: border-box; }

/* The hidden attribute must win over any display rule that follows it.
   .topbar sets display:flex, which silently defeated [hidden] on the title screen. */
[hidden] { display: none !important; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--ground);
  color: var(--ink);
  font-family: var(--serif);
  font-size: clamp(16px, 1rem + 0.15vw, 18px);
  line-height: 1.65;
  min-height: 100vh;
  overflow-x: hidden;
}

/* Film grain over the whole page. Purely decorative. */
body::after {
  content: "";
  position: fixed; inset: 0;
  pointer-events: none;
  z-index: 9999;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)'/%3E%3C/svg%3E");
}
body.no-images::after { display: none; }

.skip-link {
  position: absolute; left: -9999px; top: 0; z-index: 10000;
  background: var(--accent); color: var(--accent-ink);
  padding: 10px 16px; font-family: var(--mono); font-size: 14px;
}
.skip-link:focus { left: 8px; top: 8px; }

:where(a, button, [tabindex]):focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 2px;
}

/* ---------------------------------------------------------------- topbar */

.topbar {
  position: sticky; top: 0; z-index: 60;
  display: flex; flex-wrap: wrap; gap: 12px;
  align-items: center; justify-content: space-between;
  padding: 10px var(--gutter);
  background: color-mix(in srgb, var(--ground) 92%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 13px;
}
.topbar-left, .topbar-right { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.topbar-title { letter-spacing: 0.18em; color: var(--ink); }
.topbar-act { color: var(--ink-faint); letter-spacing: 0.1em; }

.station-mark {
  width: 14px; height: 14px; border-radius: 50%;
  border: 1.5px solid var(--accent);
  position: relative; flex: none;
}
.station-mark::after {
  content: ""; position: absolute; left: 50%; top: -4px; bottom: -4px;
  width: 1.5px; background: var(--accent); transform: translateX(-50%);
}

.integrity { display: flex; align-items: center; gap: 8px; }
.integrity-label { color: var(--ink-faint); }
.integrity-value { color: var(--ink); font-variant-numeric: tabular-nums; min-width: 3ch; text-align: right; }
.integrity-bar {
  display: inline-block; width: 90px; height: 6px;
  background: var(--line); border-radius: 3px; overflow: hidden;
}
.integrity-bar > i {
  display: block; height: 100%; width: 100%;
  background: var(--accent);
  transition: width var(--dur) ease, background var(--dur) ease;
}
.integrity.is-low .integrity-bar > i { background: var(--bad); }
.integrity.is-mid .integrity-bar > i { background: var(--warn); }

.chip {
  font: inherit; font-family: var(--mono); font-size: 12px;
  color: var(--ink-dim); background: transparent;
  border: 1px solid var(--line-bright); border-radius: var(--radius);
  padding: 5px 10px; cursor: pointer;
  transition: color var(--dur), border-color var(--dur);
}
.chip:hover { color: var(--ink); border-color: var(--accent); }

/* ------------------------------------------------------------------ layout */

.screen { padding: 0 0 96px; animation: fade var(--dur) ease both; }
@keyframes fade { from { opacity: 0; } to { opacity: 1; } }

.wrap { max-width: 940px; margin: 0 auto; padding-inline: var(--gutter); }
.prose { max-width: var(--measure); }
.prose p { margin: 0 0 1.1em; }

/* ------------------------------------------------------------------- title */

.title-screen {
  min-height: 100vh; display: grid; place-items: center;
  padding-block: 64px; padding-inline: var(--gutter);
  text-align: center;
}
.title-mark { width: 78px; height: 78px; margin: 0 auto 28px; display: block; }
.title-screen h1 {
  font-family: var(--mono); font-weight: 400;
  font-size: clamp(38px, 11vw, 78px);
  letter-spacing: 0.16em; margin: 0 0 6px; text-indent: 0.16em;
}
.title-sub {
  font-family: var(--mono); font-size: 13px; letter-spacing: 0.32em;
  color: var(--accent); text-transform: uppercase; margin: 0 0 34px; text-indent: 0.32em;
}
.title-blurb { color: var(--ink-dim); max-width: 54ch; margin: 0 auto 40px; }
.title-actions { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; }
.title-foot {
  margin-top: 52px; font-family: var(--mono); font-size: 11.5px;
  color: var(--ink-faint); letter-spacing: 0.08em; line-height: 2;
}

.btn {
  font: inherit; font-family: var(--mono); font-size: 14px;
  letter-spacing: 0.08em; text-transform: uppercase;
  padding: 13px 24px; cursor: pointer;
  background: transparent; color: var(--ink);
  border: 1px solid var(--line-bright); border-radius: var(--radius);
  transition: background var(--dur), color var(--dur), border-color var(--dur);
}
.btn:hover { border-color: var(--accent); color: var(--accent); }
.btn-primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); font-weight: 600; }
.btn-primary:hover { background: color-mix(in srgb, var(--accent) 82%, #fff); color: var(--accent-ink); }
.btn:disabled { opacity: 0.4; cursor: not-allowed; }
.btn-quiet { border-color: transparent; color: var(--ink-faint); }
.btn-quiet:hover { color: var(--ink); border-color: var(--line-bright); }

/* ------------------------------------------------------------- interstitial */

.interstitial {
  min-height: 78vh; display: grid; place-items: center;
  text-align: center; padding-inline: var(--gutter);
}
.interstitial .act-n {
  font-family: var(--mono); font-size: 12px; letter-spacing: 0.4em;
  color: var(--accent); text-transform: uppercase; margin-bottom: 14px; text-indent: 0.4em;
}
.interstitial h2 {
  font-family: var(--mono); font-weight: 400;
  font-size: clamp(30px, 7vw, 52px); letter-spacing: 0.14em;
  margin: 0 0 18px; text-indent: 0.14em;
}
.interstitial .epigraph { color: var(--ink-dim); font-style: italic; margin-bottom: 30px; }
.interstitial .body { max-width: 56ch; margin: 0 auto 36px; text-align: left; }

/* -------------------------------------------------------------------- room */

.hero {
  position: relative;
  width: 100%;
  /* aspect-ratio plus max-height shrinks the box's WIDTH to preserve the ratio,
     which left the plate occupying half the page. Size from the viewport instead
     and let object-fit do the cropping. */
  height: min(60vh, 50vw);
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background: var(--ground-2);
}
.hero img { width: 100%; height: 100%; object-fit: cover; display: block; }
.hero::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(to bottom, rgba(12,13,14,0.10) 0%, rgba(12,13,14,0.00) 50%, rgba(12,13,14,0.72) 100%);
}
body.no-images .hero { display: none; }

.room-head { padding-top: 26px; }
.room-eyebrow {
  font-family: var(--mono); font-size: 11.5px; letter-spacing: 0.24em;
  color: var(--accent); text-transform: uppercase; margin-bottom: 10px;
}
.room-head h2 {
  font-family: var(--mono); font-weight: 400;
  font-size: clamp(24px, 5vw, 36px); letter-spacing: 0.08em; margin: 0 0 22px;
}

.narrative { margin-bottom: 30px; }

/* DEXTER — the station announcing itself, unprompted and unbothered. */
.dexter {
  margin: 0 0 30px;
  padding: 14px 18px;
  border: 1px solid var(--line);
  border-left: 2px solid var(--warn);
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--warn) 4%, var(--ground-2));
  max-width: var(--measure);
}
.dexter-who {
  display: block;
  font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.24em;
  color: var(--warn); text-transform: uppercase; margin-bottom: 7px;
}
.dexter-said {
  margin: 0; font-family: var(--mono); font-size: 0.86em; line-height: 1.75;
  color: var(--ink-dim);
}

/* evidence */
.evidence-tray { margin: 0 0 34px; }
.tray-label {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.22em;
  color: var(--ink-faint); text-transform: uppercase; margin-bottom: 10px;
}
.tray-items { display: flex; flex-wrap: wrap; gap: 10px; }
.evidence-btn {
  display: flex; align-items: center; gap: 10px;
  font: inherit; font-family: var(--mono); font-size: 13px;
  color: var(--ink); background: var(--panel);
  border: 1px solid var(--line); border-left: 2px solid var(--accent);
  border-radius: var(--radius); padding: 9px 14px 9px 12px; cursor: pointer;
  text-align: left;
  transition: background var(--dur), border-color var(--dur);
}
.evidence-btn:hover { background: var(--panel-2); border-color: var(--line-bright); border-left-color: var(--accent); }
.evidence-btn .paperclip { color: var(--ink-faint); flex: none; }

/* question */
.question {
  border: 1px solid var(--line); border-radius: var(--radius);
  background: var(--panel); padding: clamp(18px, 3vw, 28px);
}
.question-prompt { font-size: 1.06em; margin: 0 0 20px; }

.options { list-style: none; margin: 0 0 18px; padding: 0; display: grid; gap: 10px; }

.option {
  display: block; width: 100%; text-align: left;
  font: inherit; font-size: 0.97em; line-height: 1.55;
  color: var(--ink); background: var(--panel-2);
  border: 1px solid var(--line); border-radius: var(--radius);
  padding: 14px 16px; cursor: pointer;
  transition: border-color var(--dur), background var(--dur), transform var(--dur);
}
.option:hover:not(:disabled) { border-color: var(--accent); transform: translateX(2px); }
.option[aria-pressed="true"] { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 9%, var(--panel-2)); }
.option:disabled { cursor: default; }

.option .key {
  font-family: var(--mono); font-size: 12px; color: var(--ink-faint);
  margin-right: 10px; letter-spacing: 0.1em;
}
.option[aria-pressed="true"] .key { color: var(--accent); }

.option.is-correct { border-color: var(--good); background: color-mix(in srgb, var(--good) 10%, var(--panel-2)); }
.option.is-wrong   { border-color: var(--bad);  background: color-mix(in srgb, var(--bad) 8%, var(--panel-2)); opacity: 0.92; }
.option.is-spent   { opacity: 0.5; }

.verdict {
  display: block; font-family: var(--mono); font-size: 11px;
  letter-spacing: 0.18em; text-transform: uppercase; margin-top: 10px;
}
.option.is-correct .verdict { color: var(--good); }
.option.is-wrong .verdict { color: var(--bad); }

.feedback {
  margin-top: 12px; padding: 13px 15px;
  border-left: 2px solid var(--line-bright);
  background: var(--ground-2); border-radius: 0 var(--radius) var(--radius) 0;
  font-size: 0.95em; color: var(--ink-dim);
}
.option.is-correct + .feedback { border-left-color: var(--good); }
.option.is-wrong + .feedback { border-left-color: var(--bad); }
.feedback.is-dexter { font-family: var(--mono); font-size: 0.86em; color: var(--warn); border-left-color: var(--warn); }

.question-actions { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
.hint-slot { margin-left: auto; }
.hint-text {
  margin-top: 14px; padding: 12px 15px; font-size: 0.94em;
  border: 1px dashed var(--line-bright); border-radius: var(--radius);
  color: var(--ink-dim); background: var(--ground-2);
}
.hint-text b { font-family: var(--mono); font-size: 11px; letter-spacing: 0.16em; color: var(--warn); display: block; margin-bottom: 6px; text-transform: uppercase; }

.penalty-flash {
  font-family: var(--mono); font-size: 12px; color: var(--bad);
  letter-spacing: 0.1em;
}

/* fragment award */
.fragment-award {
  margin-top: 22px; padding: 16px 18px;
  border: 1px solid var(--line); border-left: 2px solid var(--accent);
  background: var(--ground-2); border-radius: var(--radius);
}
.fragment-award .fa-label {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.2em;
  color: var(--ink-faint); text-transform: uppercase; margin-bottom: 8px;
}
.fragment-award .fa-value {
  font-family: var(--mono); font-size: 20px; color: var(--accent); letter-spacing: 0.06em;
  word-break: break-all;
}
.fragment-award .fa-degraded { color: var(--warn); font-size: 12px; font-family: var(--mono); margin-top: 8px; }
.takeaway { margin-top: 18px; font-size: 0.96em; color: var(--ink-dim); }
.takeaway b { color: var(--ink); font-family: var(--mono); font-size: 11px; letter-spacing: 0.16em; display: block; margin-bottom: 6px; text-transform: uppercase; }

/* branch */
.branch { margin-top: 26px; padding-top: 22px; border-top: 1px solid var(--line); }

/* ------------------------------------------------------------------ ending */

.ending-plate { margin-bottom: 30px; }
.ending h2 {
  font-family: var(--mono); font-weight: 400;
  font-size: clamp(28px, 6vw, 46px); letter-spacing: 0.12em; margin: 0 0 22px;
}
.flag-final {
  margin: 32px 0; padding: 20px;
  border: 1px solid var(--accent); border-radius: var(--radius);
  background: color-mix(in srgb, var(--accent) 7%, var(--ground-2));
  font-family: var(--mono); font-size: clamp(14px, 3.2vw, 22px);
  color: var(--accent); text-align: center; word-break: break-all; letter-spacing: 0.04em;
}
.flag-final .fl-label {
  display: block; font-size: 11px; letter-spacing: 0.24em;
  color: var(--ink-faint); margin-bottom: 10px; text-transform: uppercase;
}

/* report */
.report-table { width: 100%; border-collapse: collapse; font-size: 0.9em; margin: 8px 0 28px; }
.report-table th, .report-table td { text-align: left; padding: 9px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
.report-table th { font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.14em; color: var(--ink-faint); text-transform: uppercase; font-weight: 400; }
.report-table td.num { font-family: var(--mono); color: var(--ink-faint); white-space: nowrap; }
.report-scroll { overflow-x: auto; }
.res-clean { color: var(--good); font-family: var(--mono); font-size: 12px; }
.res-degraded { color: var(--warn); font-family: var(--mono); font-size: 12px; }

/* Set as classes, not style attributes: the site CSP forbids inline styles. */
.report-heading { font-family: var(--mono); font-weight: 400; letter-spacing: 0.08em; }
.actions-spaced { margin-top: 32px; }

.h3 { font-family: var(--mono); font-size: 12px; letter-spacing: 0.2em; color: var(--ink-faint); text-transform: uppercase; margin: 34px 0 12px; }

.ach-list { list-style: none; padding: 0; margin: 0 0 28px; display: grid; gap: 8px; }
.ach {
  display: flex; gap: 12px; align-items: baseline;
  padding: 12px 14px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel);
}
.ach.locked { opacity: 0.45; }
.ach .ach-state { font-family: var(--mono); font-size: 11px; letter-spacing: 0.14em; color: var(--accent); flex: none; }
.ach.locked .ach-state { color: var(--ink-faint); }
.ach .ach-desc { color: var(--ink-dim); font-size: 0.93em; }

/* --------------------------------------------------------------- evidence modal */

.dialog-scrim {
  position: fixed; inset: 0; z-index: 200;
  background: rgba(6,7,8,0.86);
  display: grid; place-items: center; padding: var(--gutter);
  overflow-y: auto;
}
.dialog {
  background: var(--panel); border: 1px solid var(--line-bright);
  border-radius: var(--radius); max-width: 720px; width: 100%;
  padding: clamp(18px, 3vw, 28px); margin: auto;
}
.dialog h2 {
  font-family: var(--mono); font-weight: 400; font-size: 15px;
  letter-spacing: 0.16em; text-transform: uppercase; color: var(--accent);
  margin: 0 0 16px;
}
.dialog-actions { display: flex; gap: 10px; justify-content: flex-end; margin-top: 20px; flex-wrap: wrap; }

.transcript {
  font-family: var(--mono); font-size: 12.5px; line-height: 1.7;
  white-space: pre-wrap; word-break: break-word;
  background: var(--ground); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 16px; color: var(--ink);
  overflow-x: auto; margin: 0;
}
.evidence-figure img {
  width: 100%;
  /* The transcript is the content; the plate is atmosphere. Cap it so the
     readable text is not pushed below the fold. */
  max-height: 200px; object-fit: cover; object-position: center 30%;
  border: 1px solid var(--line); border-radius: var(--radius);
  margin-bottom: 14px; display: block;
}
body.no-images .evidence-figure img { display: none; }

/* hash cracker */
.cracker { margin-top: 16px; padding-top: 16px; border-top: 1px solid var(--line); }
.cracker p { font-size: 0.9em; color: var(--ink-dim); margin: 0 0 10px; }
.cracker-row { display: flex; gap: 8px; flex-wrap: wrap; }
.cracker input {
  flex: 1 1 200px; font: inherit; font-family: var(--mono); font-size: 13px;
  background: var(--ground); color: var(--ink);
  border: 1px solid var(--line-bright); border-radius: var(--radius); padding: 10px 12px;
}
.cracker-out { margin-top: 10px; font-family: var(--mono); font-size: 12px; word-break: break-all; }
.cracker-out.hit { color: var(--good); }
.cracker-out.miss { color: var(--ink-faint); }

/* menu list */
.menu-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.menu-list button { width: 100%; }

.noscript { padding: 60px var(--gutter); max-width: 60ch; margin: 0 auto; }
.noscript h1 { font-family: var(--mono); letter-spacing: 0.16em; font-weight: 400; }

/* text-only mode: strip decoration, keep structure */
body.no-images .title-mark { display: none; }

@media (max-width: 640px) {
  .topbar { font-size: 12px; }
  .integrity-label { display: none; }
  .hero { height: min(40vh, 62vw); }
}