:root {
  --paper: #f6efe2;
  --paper-2: #efe4cf;
  --ink: #1f2a44;
  --ink-soft: #55607a;
  --line: #d9cbb0;
  --primary: #1f3a6b;
  --primary-ink: #fffaf0;
  --safe: #2f6b3a;
  --safe-bg: #e3efdc;
  --caution: #8a5a00;
  --caution-bg: #fbecc8;
  --scam: #b3261e;
  --scam-bg: #fbdcd6;
  --radius: 22px;
  --sans: "Noto Sans Bengali", system-ui, sans-serif;
  --serif: "Noto Serif Bengali", Georgia, serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  background: var(--paper);
  background-image: radial-gradient(circle at 20% 0%, #fff8ea 0, transparent 60%);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 22px;
  line-height: 1.55;
  -webkit-text-size-adjust: 100%;
}

#app { max-width: 560px; margin: 0 auto; padding: 20px 16px calc(28px + env(safe-area-inset-bottom)); }
.screen { display: none; flex-direction: column; gap: 16px; min-height: calc(100dvh - 48px); }
.screen.active { display: flex; }

/* ---------- home ---------- */
.masthead { position: relative; text-align: center; padding: 64px 0 8px; }
.masthead h1 {
  font-family: var(--serif);
  font-weight: 900;
  font-size: clamp(56px, 18vw, 88px);
  line-height: 1.15;
  margin: 0 0 12px;
  letter-spacing: 0.01em;
}
.tagline { margin: 0; color: var(--ink-soft); font-size: 22px; }
.gear, .pill {
  position: absolute; top: 0; inset-inline-end: 0;
  width: 48px; height: 48px; border-radius: 50%;
  border: 1px solid var(--line); background: transparent; color: var(--ink-soft);
  font-size: 24px; cursor: pointer;
}
.pill {
  inset-inline-end: auto; inset-inline-start: 0;
  width: auto; height: 48px; padding: 0 16px; border-radius: 999px;
  font: 600 18px var(--sans); color: var(--ink); display: flex; align-items: center; gap: 6px;
}

/* ---------- language picker ---------- */
.picker-head { text-align: center; padding: 12px 0 4px; }
.picker-title { font: 800 22px/1.4 "Noto Sans", system-ui, sans-serif; color: var(--ink-soft); margin: 0; }
.picker-sub { font: 800 30px/1.3 var(--serif); margin: 6px 0 0; }
.lang-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.lang-tile {
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 2px;
  min-height: 96px; padding: 12px 8px; border-radius: var(--radius);
  background: #fffdf7; border: 2px solid var(--line); color: var(--ink); cursor: pointer;
  font-family: "Noto Sans", "Noto Sans Ol Chiki", "Noto Sans Meetei Mayek", system-ui, sans-serif;
  -webkit-tap-highlight-color: transparent;
}
.lang-tile:active { transform: scale(0.98); }
.lang-tile .native { font-size: 28px; font-weight: 700; line-height: 1.3; }
.lang-tile .english { font-size: 14px; color: var(--ink-soft); }
.lang-tile.suggested { border-color: var(--primary); background: #e8edf6; order: -1; grid-column: 1 / -1; }
.promise { text-align: center; font-size: 17px; color: var(--ink-soft); margin: 4px 0 0; }

.samples { display: flex; flex-direction: column; gap: 8px; }
.samples[hidden] { display: none; }
.samples-label { margin: 4px 0 0; text-align: center; font-size: 17px; color: var(--ink-soft); }
.sample-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.sample {
  height: 96px; padding: 0; overflow: hidden; cursor: pointer;
  border: 2px solid var(--line); border-radius: 14px; background: #fff;
}
.sample img { width: 100%; height: 100%; object-fit: cover; object-position: top; display: block; }

/* ---------- buttons ---------- */
.big-btn {
  display: flex; align-items: center; justify-content: center; gap: 14px;
  min-height: 84px; padding: 16px 20px;
  border-radius: var(--radius); border: 2px solid transparent;
  font: 700 26px/1.2 var(--sans);
  text-decoration: none; cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  transition: transform 0.08s ease;
}
.big-btn:active { transform: scale(0.98); }
.big-btn .icon { font-size: 32px; }
.big-btn.primary { background: var(--primary); color: var(--primary-ink); box-shadow: 0 6px 0 #142849; }
#home .big-btn.primary { min-height: 150px; font-size: 32px; flex-direction: column; gap: 6px; margin-top: 12px; }
#home .big-btn.primary .icon { font-size: 52px; }
.big-btn.secondary { background: var(--paper-2); color: var(--ink); border-color: var(--line); }
.big-btn.danger { background: var(--scam); color: #fff; box-shadow: 0 6px 0 #7d1a15; }
.big-btn[hidden], .call-btn[hidden] { display: none; }

.call-btn {
  margin-top: auto;
  display: flex; align-items: center; justify-content: center; gap: 10px;
  min-height: 64px; border-radius: var(--radius);
  border: 2px dashed var(--line); color: var(--ink); text-decoration: none; font-weight: 600;
}

/* ---------- reading ---------- */
#reading { justify-content: center; align-items: center; text-align: center; }
.paper-preview {
  width: 72%; max-width: 320px; padding: 10px; background: #fff;
  border-radius: 6px; box-shadow: 0 10px 30px rgba(31, 42, 68, 0.18);
  transform: rotate(-2deg);
}
.paper-preview img { width: 100%; display: block; border-radius: 2px; }
.reading-text { font: 800 40px/1 var(--serif); margin: 24px 0 0; }
.reading-sub { margin: 0; color: var(--ink-soft); }
.dots i { font-style: normal; animation: blink 1.4s infinite both; }
.dots i:nth-child(2) { animation-delay: 0.2s; }
.dots i:nth-child(3) { animation-delay: 0.4s; }
@keyframes blink { 0%, 80%, 100% { opacity: 0.15; } 40% { opacity: 1; } }

/* ---------- result ---------- */
.verdict {
  border-radius: var(--radius); padding: 18px 20px; text-align: center;
  border: 3px solid currentColor;
}
.verdict p { margin: 6px 0 0; font-weight: 600; }
.stamp { font: 900 44px/1.1 var(--serif); }
.verdict[data-risk="safe"] { color: var(--safe); background: var(--safe-bg); }
.verdict[data-risk="caution"] { color: var(--caution); background: var(--caution-bg); }
.verdict[data-risk="scam"] { color: var(--scam); background: var(--scam-bg); }
.verdict[data-risk="scam"] .stamp { font-size: 56px; animation: thud 0.35s ease-out; }
@keyframes thud { from { transform: scale(1.6) rotate(-6deg); opacity: 0; } to { transform: none; opacity: 1; } }

.letter {
  background: #fffdf7; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 18px 20px; box-shadow: 0 2px 0 var(--line);
}
.label { margin: 0; font-size: 16px; font-weight: 600; color: var(--ink-soft); letter-spacing: 0.02em; }
.summary { margin: 2px 0 14px; font-size: 26px; font-weight: 600; }
.action { margin: 2px 0 0; font-size: 24px; }
.chips { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 14px; }
.chips:empty { display: none; }
.chip {
  display: inline-flex; flex-direction: column; padding: 8px 14px;
  border-radius: 14px; background: var(--paper-2); border: 1px solid var(--line);
}
.chip small { font-size: 14px; color: var(--ink-soft); }
.chip b { font-size: 24px; }

.original { font-size: 16px; color: var(--ink-soft); }
.original summary { cursor: pointer; padding: 8px 0; }
.original pre {
  white-space: pre-wrap; font: 15px/1.5 ui-monospace, monospace;
  background: var(--paper-2); padding: 12px; border-radius: 12px; margin: 0;
}
.meta { font-size: 13px; }

.beta-note {
  margin: 0; padding: 12px 16px; border-radius: 14px; font-size: 17px;
  background: var(--caution-bg); color: var(--caution); border: 1px dashed currentColor;
}
.beta-note[hidden] { display: none; }

/* ---------- error ---------- */
#error { justify-content: center; text-align: center; }
.err-title { font: 800 36px/1.2 var(--serif); margin: 0; }
.err-body { margin: 0 0 12px; }

/* ---------- settings ---------- */
dialog {
  border: none; border-radius: var(--radius); padding: 24px;
  width: min(92vw, 480px); background: var(--paper); color: var(--ink);
}
dialog::backdrop { background: rgba(31, 42, 68, 0.45); }
dialog h2 { margin: 0 0 12px; font-family: var(--serif); }
dialog form { display: flex; flex-direction: column; gap: 14px; }
dialog label { display: flex; flex-direction: column; font-size: 18px; gap: 4px; }
dialog input {
  font: 22px var(--sans); padding: 12px 14px; border-radius: 14px;
  border: 2px solid var(--line); background: #fffdf7; color: var(--ink);
}

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