@import url('https://fonts.googleapis.com/css2?family=Special+Elite&family=IBM+Plex+Sans:wght@400;500;600;700&family=IBM+Plex+Mono:wght@500&display=swap');

:root {
  --paper: #EDE6D6;
  --paper-dark: #E1D8C3;
  --ink: #1F2A24;
  --ink-soft: #4A5850;
  --danger: #B23A2E;
  --safe: #2F6E64;
  --caution: #D4A017;
  --rule: rgba(31, 42, 36, 0.18);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background:
    radial-gradient(ellipse at top left, rgba(255,255,255,0.4), transparent 60%),
    var(--paper);
  color: var(--ink);
  font-family: 'IBM Plex Sans', sans-serif;
  line-height: 1.5;
  min-height: 100vh;
}

/* Faint paper grain via layered gradients */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    repeating-linear-gradient(0deg, rgba(31,42,36,0.015) 0px, transparent 1px, transparent 2px),
    repeating-linear-gradient(90deg, rgba(31,42,36,0.015) 0px, transparent 1px, transparent 2px);
  z-index: 0;
}

header {
  padding: 3.5rem 1.5rem 2rem;
  text-align: center;
  border-bottom: 1px dashed var(--rule);
  position: relative;
}

header::after {
  content: "CASE FILE";
  position: absolute;
  top: 1rem;
  right: 1.5rem;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  color: var(--ink-soft);
  border: 1px solid var(--rule);
  padding: 0.2rem 0.5rem;
}

header h1 {
  font-family: 'Special Elite', cursive;
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 400;
  letter-spacing: 0.02em;
  margin: 0 0 0.5rem;
}

header p {
  color: var(--ink-soft);
  font-size: 0.95rem;
  margin: 0;
}

main {
  max-width: 640px;
  margin: 0 auto;
  padding: 2.5rem 1.5rem 4rem;
  position: relative;
  z-index: 1;
}

#analyzer {
  background: var(--paper-dark);
  border: 1px solid var(--rule);
  padding: 1.75rem;
  position: relative;
}

/* Little "evidence tag" corner label */
#analyzer::before {
  content: "EXHIBIT A — SUBMITTED MESSAGE";
  display: block;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  color: var(--ink-soft);
  margin-bottom: 0.75rem;
}

#messageInput {
  width: 100%;
  min-height: 160px;
  padding: 1rem;
  background: var(--paper);
  border: 1px solid var(--rule);
  color: var(--ink);
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.9rem;
  resize: vertical;
}

#messageInput:focus {
  outline: 2px solid var(--ink);
  outline-offset: 2px;
}

#analyzeBtn {
  margin-top: 1rem;
  padding: 0.75rem 1.5rem;
  background: var(--ink);
  color: var(--paper);
  border: none;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  transition: transform 0.15s ease, background 0.15s ease;
}

#analyzeBtn:hover { background: var(--ink-soft); }
#analyzeBtn:active { transform: scale(0.97); }
#analyzeBtn:focus-visible { outline: 2px solid var(--ink); outline-offset: 3px; }

.hidden { display: none; }

/* --- Verdict stamp --- */
#resultBox {
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px dashed var(--rule);
}

.stamp {
  display: inline-block;
  font-family: 'Special Elite', cursive;
  font-size: 1.3rem;
  padding: 0.4rem 1rem;
  border: 3px solid currentColor;
  border-radius: 3px;
  transform: rotate(-4deg);
  letter-spacing: 0.05em;
  animation: stampDown 0.25s ease-out;
}

.stamp.risk-high { color: var(--danger); }
.stamp.risk-medium { color: var(--caution); }
.stamp.risk-low { color: var(--safe); }

@keyframes stampDown {
  0% { transform: rotate(-4deg) scale(1.6); opacity: 0; }
  60% { opacity: 1; }
  100% { transform: rotate(-4deg) scale(1); opacity: 1; }
}

@media (prefers-reduced-motion: reduce) {
  .stamp { animation: none; }
}

/* --- Evidence tags (red flags list) --- */
.evidence-list {
  list-style: none;
  margin: 1.25rem 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.evidence-tag {
  display: flex;
  gap: 0.75rem;
  padding: 0.65rem 0.85rem;
  background: var(--paper);
  border-left: 3px solid var(--danger);
  font-size: 0.9rem;
}

.evidence-tag.medium { border-left-color: var(--caution); }
.evidence-tag.low { border-left-color: var(--safe); }

.evidence-tag .tag-label {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.7rem;
  color: var(--ink-soft);
  white-space: nowrap;
  padding-top: 0.1rem;
}

footer {
  text-align: center;
  padding: 2rem 1rem;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.75rem;
  color: var(--ink-soft);
  border-top: 1px dashed var(--rule);
}

/* --- Tabs (folder-tab style) --- */
#tabs {
  max-width: 640px;
  margin: 1.5rem auto 0;
  padding: 0 1.5rem;
  display: flex;
  gap: 0.4rem;
}

.tab-btn {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 0.6rem 1rem;
  background: var(--paper);
  color: var(--ink-soft);
  border: 1px solid var(--rule);
  border-bottom: none;
  cursor: pointer;
  border-radius: 4px 4px 0 0;
}

.tab-btn.active {
  background: var(--paper-dark);
  color: var(--ink);
  font-weight: 600;
}

/* --- Quiz mode --- */
#quizScore {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.8rem;
  color: var(--ink-soft);
  margin-bottom: 1rem;
  text-align: right;
}

#quizCard {
  background: var(--paper-dark);
  border: 1px solid var(--rule);
  padding: 1.75rem;
}

#quizLabel {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  color: var(--ink-soft);
  margin-bottom: 0.75rem;
}

#quizMessage {
  background: var(--paper);
  border: 1px solid var(--rule);
  padding: 1rem;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.9rem;
  white-space: pre-wrap;
}

#quizButtons {
  display: flex;
  gap: 0.75rem;
  margin-top: 1.25rem;
}

.quiz-choice {
  flex: 1;
  padding: 0.75rem;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.85rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  background: var(--ink);
  color: var(--paper);
  border: none;
  cursor: pointer;
  transition: background 0.15s ease;
}

.quiz-choice:hover { background: var(--ink-soft); }

#quizFeedback {
  margin-top: 1.5rem;
  padding-top: 1.25rem;
  border-top: 1px dashed var(--rule);
}

#quizVerdict {
  font-family: 'Special Elite', cursive;
  font-size: 1.1rem;
  margin-bottom: 0.75rem;
}

#quizVerdict.correct { color: var(--safe); }
#quizVerdict.incorrect { color: var(--danger); }

#nextBtn, #restartBtn {
  margin-top: 1rem;
  padding: 0.6rem 1.25rem;
  background: var(--ink);
  color: var(--paper);
  border: none;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  cursor: pointer;
}

#nextBtn:hover, #restartBtn:hover { background: var(--ink-soft); }

#quizDone {
  text-align: center;
  padding: 2rem;
}