/* Noir case-file colors */
:root {
  --bg: #14110f;
  --panel: #1d1916;
  --line: #3a322b;
  --text: #ece4d8;
  --muted: #a89b8a;
  --accent: #e0a84a;        /* amber desk-lamp light */
  --paper: #efe4cf;         /* manila case file */
  --ink: #2b241d;
  --stamp: #b3392f;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: radial-gradient(ellipse at top, #241e19 0%, var(--bg) 60%);
  background-color: var(--bg);
  color: var(--text);
  font: 16px/1.55 "IBM Plex Sans", system-ui, sans-serif;
  min-height: 100vh;
  padding: 24px 16px 40px;
}

header { text-align: center; margin-bottom: 20px; }
h1 {
  font-family: "Special Elite", "Courier New", monospace;
  font-weight: 400; font-size: clamp(1.8rem, 5vw, 2.6rem);
  margin: 0; color: var(--accent); letter-spacing: 0.02em;
}
.sub { margin: 4px 0 0; color: var(--muted); }

.hidden { display: none !important; }

button {
  font: inherit; cursor: pointer; border-radius: 6px;
  padding: 10px 16px; border: 1px solid var(--line);
  background: var(--panel); color: var(--text);
}
button:hover { border-color: var(--accent); }
button.primary { background: var(--accent); border-color: var(--accent); color: #1b140c; font-weight: 600; }

/* ---------- Briefing: a manila case file ---------- */
.case-file {
  position: relative;
  max-width: 680px; margin: 0 auto;
  background: var(--paper); color: var(--ink);
  border-radius: 4px 14px 4px 4px;
  padding: 36px 32px 28px;
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.5);
}
.case-file h2 { font-family: "Special Elite", "Courier New", monospace; font-weight: 400; margin: 0 0 16px; font-size: 1.6rem; }
.case-file p { margin: 0 0 12px; }
.case-file .assignment { border-top: 1px dashed #b9a98d; padding-top: 12px; margin-top: 16px; }
.case-file button { margin-top: 8px; }
.stamp {
  position: absolute; top: 18px; right: 22px;
  font-family: "Special Elite", monospace; color: var(--stamp);
  border: 3px solid var(--stamp); padding: 2px 10px; transform: rotate(6deg);
  opacity: 0.8; letter-spacing: 0.1em;
}

/* ---------- Investigation board: three panels ---------- */
.board {
  display: grid; grid-template-columns: 220px 1fr 280px; gap: 14px;
  max-width: 1200px; margin: 0 auto;
}
.panel { background: var(--panel); border: 1px solid var(--line); border-radius: 10px; padding: 16px; }
.panel h3 {
  margin: 0 0 12px; font-size: 0.8rem; text-transform: uppercase;
  letter-spacing: 0.08em; color: var(--muted);
}

/* Locations */
.locations ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; }
.locations button { width: 100%; text-align: left; display: flex; gap: 8px; align-items: center; }
.locations button.current { border-color: var(--accent); background: #2a221b; }
.locations .progress { margin-left: auto; font: 0.75rem "IBM Plex Mono", monospace; color: var(--muted); }

/* Scene */
.scene h2 { margin: 0 0 4px; font-family: "Special Elite", monospace; font-weight: 400; color: var(--accent); }
.scene-desc { color: var(--muted); margin: 0 0 16px; }
.actions { display: grid; gap: 8px; }
.actions button { text-align: left; }
.actions button.done { color: var(--muted); border-style: dashed; }
.result {
  margin-top: 16px; padding: 14px 16px; border-radius: 6px;
  background: var(--paper); color: var(--ink); line-height: 1.6;
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.35);
}
.result .new-clue {
  margin-top: 10px; padding-top: 8px; border-top: 1px dashed #b9a98d;
  font-weight: 600; color: #7a4b0c;
}

/* Notebook */
.count {
  display: inline-block; min-width: 22px; padding: 0 6px; margin-left: 4px;
  border-radius: 999px; background: var(--accent); color: #1b140c; text-align: center;
}
.notebook ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.notebook li {
  background: #251f1a; border-left: 3px solid var(--accent); border-radius: 4px;
  padding: 8px 10px; font-size: 0.9rem;
}
.notebook li b { display: block; color: var(--text); }
.notebook li span { color: var(--muted); }
.notebook li.fresh { animation: flash 1.2s ease-out; }
@keyframes flash { from { background: #5a4220; } to { background: #251f1a; } }
.empty { color: var(--muted); font-size: 0.9rem; margin: 0; }

/* ---------- Phones and narrow screens ---------- */
@media (max-width: 900px) {
  .board { grid-template-columns: 1fr; }
  .locations ul { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); }
}

/* ---------- Stage 2: the clock ---------- */
.clock {
  display: flex; align-items: center; gap: 12px;
  padding: 8px 12px; margin-bottom: 16px; border-radius: 6px;
  background: #251f1a; border: 1px solid var(--line);
  font-family: "IBM Plex Mono", ui-monospace, monospace; font-size: 0.9rem;
}
.clock-bar { flex: 1; height: 8px; background: #3a322b; border-radius: 999px; overflow: hidden; }
.clock-fill { height: 100%; width: 100%; background: var(--accent); transition: width 0.4s ease; }
.clock-left { color: var(--muted); white-space: nowrap; }
.clock.low .clock-fill { background: var(--stamp); }
.clock.low .clock-left { color: #e2766c; }

/* Time cost on each action */
.actions button { display: flex; justify-content: space-between; gap: 12px; align-items: center; }
.cost {
  flex-shrink: 0; font: 0.75rem "IBM Plex Mono", ui-monospace, monospace; color: var(--muted);
  border: 1px solid var(--line); border-radius: 999px; padding: 1px 8px;
}
.actions button.too-long { opacity: 0.45; }
.case-file .time-note { background: #e4d4b4; padding: 8px 12px; border-radius: 4px; margin-top: 12px; }

/* ---------- Stage 3: close the case ---------- */
.close-case { width: 100%; margin-top: 14px; }
.link-btn { background: none; border: none; color: var(--muted); padding: 0; margin-bottom: 8px; }
.link-btn:hover { color: var(--accent); }

.accuse { max-width: 1000px; margin: 0 auto; }
.accuse-title { font-family: "Special Elite", monospace; font-weight: 400; color: var(--accent); font-size: 1.8rem; margin: 0 0 16px; }
.step { background: var(--panel); border: 1px solid var(--line); border-radius: 10px; padding: 18px; margin-bottom: 14px; }
.step h3 { margin: 0 0 6px; font-size: 1.1rem; }
.step h3 small { color: var(--muted); font-weight: 400; }
.step-num {
  display: inline-flex; width: 26px; height: 26px; border-radius: 50%; margin-right: 6px;
  align-items: center; justify-content: center; background: var(--accent); color: #1b140c; font-size: 0.9rem;
}
.hint { color: var(--muted); font-size: 0.9rem; margin: 6px 0 10px; }

/* Sorting list */
.fishbone-wrap { display: grid; grid-template-columns: 1fr 1.3fr; gap: 16px; align-items: start; }
.sort-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; }
.sort-list li {
  display: flex; justify-content: space-between; align-items: center; gap: 8px;
  background: #251f1a; border-radius: 6px; padding: 6px 8px; font-size: 0.9rem;
}
select {
  font: inherit; font-size: 0.85rem; background: var(--bg); color: var(--text);
  border: 1px solid var(--line); border-radius: 4px; padding: 4px 6px;
}

/* The fishbone diagram: three bones on top, three below, a spine to the head */
.fishbone {
  display: grid; grid-template-columns: repeat(3, 1fr) 120px; grid-template-rows: auto 18px auto;
  gap: 8px; position: relative;
}
.bone { background: #251f1a; border-top: 3px solid var(--accent); border-radius: 4px; padding: 6px 8px; min-height: 70px; font-size: 0.8rem; }
.bone.bottom { border-top: none; border-bottom: 3px solid var(--accent); }
.bone h4 { margin: 0 0 4px; font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--accent); }
.bone .chip { display: block; color: var(--text); margin-bottom: 2px; }
.spine { grid-column: 1 / 4; grid-row: 2; align-self: center; height: 3px; background: var(--accent); position: relative; }
.spine::after {
  content: ""; position: absolute; right: -2px; top: -6px;
  border-left: 12px solid var(--accent); border-top: 7px solid transparent; border-bottom: 7px solid transparent;
}
.fish-head {
  grid-column: 4; grid-row: 1 / 4; align-self: center;
  background: var(--stamp); color: #fff; border-radius: 6px; padding: 10px; text-align: center; font-weight: 600; font-size: 0.85rem;
}
.symptom-row { grid-column: 1 / 5; font-size: 0.8rem; color: var(--muted); }

/* Answer options and evidence checkboxes */
.options, .evidence { display: grid; gap: 6px; }
.options label, .evidence label {
  display: flex; gap: 10px; align-items: flex-start; cursor: pointer;
  background: #251f1a; border: 1px solid transparent; border-radius: 6px; padding: 8px 10px;
}
.options label:hover, .evidence label:hover { border-color: var(--line); }
.options input, .evidence input { margin-top: 4px; accent-color: var(--accent); }
.evidence { grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); }
.evidence label { font-size: 0.85rem; }
.accuse-error { color: #e2766c; }
.file-btn { font-size: 1.1rem; padding: 12px 24px; }

/* ---------- Verdict ---------- */
.verdict { text-align: left; }
.grade-stamp {
  position: absolute; top: 20px; right: 26px; width: 90px; height: 90px; border-radius: 50%;
  border: 5px solid var(--stamp); color: var(--stamp); transform: rotate(-8deg);
  display: flex; align-items: center; justify-content: center;
  font: 3rem "Special Elite", monospace;
}
.grade-stamp.pass { border-color: #3f7d4e; color: #3f7d4e; }
.verdict-score { font-size: 1.1rem; font-weight: 600; }
.verdict h3 { margin: 18px 0 6px; font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.06em; color: #7a6a52; }
.verdict .line { display: flex; justify-content: space-between; border-bottom: 1px dashed #c9b994; padding: 4px 0; }
.verdict .fb { margin: 4px 0; }
.verdict .good { color: #2f6b3d; font-weight: 600; }
.verdict .bad { color: #a3332a; font-weight: 600; }
.verdict .story { background: #e4d4b4; padding: 10px 12px; border-radius: 4px; }

@media (max-width: 900px) {
  .fishbone-wrap { grid-template-columns: 1fr; }
  .fishbone { grid-template-columns: repeat(3, 1fr); }
  .fish-head { grid-column: 1 / 4; grid-row: auto; }
  .spine { display: none; }
  .grade-stamp { position: static; margin-bottom: 8px; }
}

/* ---------- Stage 4: case select ---------- */
.case-select { max-width: 900px; margin: 0 auto; }
.select-title { font-family: "Special Elite", monospace; font-weight: 400; color: var(--accent); text-align: center; margin: 0 0 20px; }
.case-list { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 340px)); justify-content: center; gap: 18px; }
.case-card {
  position: relative; text-align: left; display: flex; flex-direction: column; gap: 6px;
  background: var(--paper); color: var(--ink); border: none; border-radius: 4px 12px 4px 4px;
  padding: 34px 20px 18px; box-shadow: 0 10px 24px rgba(0, 0, 0, 0.45);
  transition: transform 0.15s ease;
}
.case-card:hover { transform: translateY(-4px) rotate(-0.5deg); }
.case-card b { font-family: "Special Elite", monospace; font-weight: 400; font-size: 1.25rem; }
.case-card .tagline { color: #5a4c3b; }
.case-card .meta { font: 0.8rem "IBM Plex Mono", monospace; color: #7a6a52; }
.case-card .tab {
  position: absolute; top: -12px; left: 16px; padding: 3px 12px; border-radius: 6px 6px 0 0;
  background: #d9c7a3; font: 0.75rem "IBM Plex Mono", monospace; letter-spacing: 0.06em; color: var(--ink);
}
.paper-link { background: none; border: none; color: #7a6a52; margin-left: 8px; }
.paper-link:hover { color: var(--ink); text-decoration: underline; }
.verdict-buttons { display: flex; gap: 10px; flex-wrap: wrap; }
.verdict-buttons button:not(.primary) { background: #e4d4b4; color: var(--ink); border-color: #c9b994; }