:root {
  --ink: #1a1714;
  --paper: #f3efe6;
  --panel: rgba(255, 252, 246, 0.88);
  --accent: #c45c26;
  --accent-2: #1f6b5c;
  --line: rgba(26, 23, 20, 0.12);
  --good: #1f6b5c;
  --warn: #a67c2a;
  --bad: #8b2e2e;
  --shadow: 0 18px 50px rgba(26, 23, 20, 0.12);
  --font: "DM Sans", system-ui, sans-serif;
  --display: "Syne", "DM Sans", sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body {
  font-family: var(--font);
  color: var(--ink);
  background:
    radial-gradient(1200px 600px at 10% -10%, #f7d9b8 0%, transparent 55%),
    radial-gradient(900px 500px at 100% 0%, #cfe7df 0%, transparent 50%),
    linear-gradient(180deg, #efe7d8 0%, #e4ddd0 100%);
}

.bg-grid {
  position: fixed; inset: 0; pointer-events: none; opacity: 0.18;
  background-image:
    linear-gradient(rgba(26,23,20,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(26,23,20,0.05) 1px, transparent 1px);
  background-size: 42px 42px;
}

.top {
  position: sticky; top: 0; z-index: 20;
  display: flex; justify-content: space-between; align-items: center;
  gap: 1rem; padding: 0.9rem 1.25rem;
  backdrop-filter: blur(10px);
  background: rgba(243, 239, 230, 0.75);
  border-bottom: 1px solid var(--line);
}
.brand { display: flex; gap: 0.75rem; align-items: center; }
.brand-mark {
  width: 2.2rem; height: 2.2rem; border-radius: 0.55rem;
  background: conic-gradient(from 210deg, var(--accent), #e2a36a, var(--accent-2), var(--accent));
  box-shadow: inset 0 0 0 3px rgba(255,255,255,0.35);
}
.brand-name { font-family: var(--display); font-weight: 800; letter-spacing: -0.02em; line-height: 1; }
.brand-sub { font-size: 0.78rem; opacity: 0.7; text-transform: uppercase; letter-spacing: 0.08em; }

.modes { display: flex; gap: 0.35rem; }
.mode {
  border: 1px solid transparent; background: transparent; color: var(--ink);
  padding: 0.45rem 0.8rem; border-radius: 999px; cursor: pointer; font-weight: 600;
}
.mode.active { background: var(--ink); color: var(--paper); }

main { max-width: 1100px; margin: 0 auto; padding: 1.5rem 1.25rem 5rem; }
.view { display: none; animation: rise 0.45s ease both; }
.view.active { display: block; }
@keyframes rise { from { opacity: 0; transform: translateY(8px);} to { opacity: 1; transform: none;} }

h1 { font-family: var(--display); font-size: clamp(1.8rem, 4vw, 2.6rem); margin: 0 0 0.4rem; letter-spacing: -0.03em; }
.lede { max-width: 42rem; opacity: 0.8; margin: 0 0 1.25rem; }

.stage {
  position: relative; width: min(100%, 520px); aspect-ratio: 3/4;
  border-radius: 1.1rem; overflow: hidden; background: #111;
  box-shadow: var(--shadow); border: 1px solid rgba(0,0,0,0.2);
}
.stage video, .stage img, .stage canvas { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.stage canvas { pointer-events: none; }
.guide {
  position: absolute; inset: 8% 10%; border: 2px dashed rgba(255,255,255,0.55);
  border-radius: 0.6rem; box-shadow: 0 0 0 999px rgba(0,0,0,0.28);
}

.actions { display: flex; flex-wrap: wrap; gap: 0.55rem; margin-top: 1rem; }
.btn {
  border: 1px solid var(--line); background: var(--panel); color: var(--ink);
  padding: 0.7rem 1rem; border-radius: 0.7rem; font-weight: 700; cursor: pointer;
  transition: transform 0.15s ease, background 0.15s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn:disabled { opacity: 0.45; cursor: not-allowed; transform: none; }
.btn.primary { background: var(--accent); border-color: transparent; color: #fff; }
.btn.ghost { background: transparent; }
.btn.tiny { padding: 0.35rem 0.55rem; font-size: 0.8rem; }
.file-btn { display: inline-flex; align-items: center; }

.status { margin-top: 0.85rem; min-height: 1.4rem; font-weight: 600; }
.status.busy::after {
  content: ""; display: inline-block; width: 0.7rem; height: 0.7rem; margin-left: 0.45rem;
  border-radius: 50%; border: 2px solid var(--accent); border-right-color: transparent;
  animation: spin 0.7s linear infinite; vertical-align: -1px;
}
@keyframes spin { to { transform: rotate(360deg);} }

.result-panel {
  margin-top: 1.5rem; padding: 1.1rem; border-radius: 1rem;
  background: var(--panel); border: 1px solid var(--line); box-shadow: var(--shadow);
}
.result-head { display: flex; justify-content: space-between; align-items: center; gap: 0.75rem; margin-bottom: 0.85rem; }
.badge {
  display: inline-block; padding: 0.35rem 0.7rem; border-radius: 999px;
  font-size: 0.78rem; font-weight: 800; letter-spacing: 0.04em; text-transform: uppercase;
  background: #ddd; color: #333;
}
.badge.high { background: #d7eee6; color: var(--good); }
.badge.medium { background: #f5e6c8; color: #7a5a12; }
.badge.low, .badge.no { background: #f0d4d4; color: var(--bad); }

.result-grid { display: grid; grid-template-columns: 140px 1fr; gap: 1rem; }
.result-grid img {
  width: 140px; height: 196px; object-fit: cover; border-radius: 0.6rem;
  background: #ddd; border: 1px solid var(--line);
}
.meta { opacity: 0.75; margin: 0.25rem 0 0.75rem; }
.evidence { list-style: none; padding: 0; margin: 0 0 0.8rem; display: grid; gap: 0.25rem; }
.evidence li { font-size: 0.92rem; }
.confirm-row { margin: 0.75rem 0 0.25rem; }
.btn.tap-lg {
  width: 100%;
  min-height: 3.1rem;
  font-size: 1.05rem;
  padding: 0.85rem 1rem;
}
.btn.danger {
  background: #8b2e2e;
  border-color: transparent;
  color: #fff;
}
.btn.active { outline: 2px solid var(--accent-2); }
.yesno-row {
  display: grid;
  gap: 0.65rem;
  margin-top: 0.75rem;
}
.feedback-ask { margin-top: 1rem; }
.feedback-q {
  font-family: var(--display);
  font-size: 1.15rem;
  margin: 0;
}
.feedback-done { margin-top: 1rem; }
.none-btn { margin-top: 0.85rem; width: 100%; }
.upload-fallback {
  margin: 0.85rem 0 0;
  font-size: 0.92rem;
  opacity: 0.8;
}
.upload-fallback .linkish {
  color: var(--accent);
  font-weight: 700;
  text-decoration: underline;
  cursor: pointer;
}
.cam-overlay {
  position: absolute;
  inset: 0;
  z-index: 4;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.65rem;
  padding: 1.25rem;
  background: rgba(10, 10, 10, 0.62);
  text-align: center;
  color: #f3efe6;
}
.cam-overlay[hidden] { display: none !important; }
.cam-overlay-title {
  font-family: var(--display);
  font-size: 1.35rem;
  font-weight: 800;
  margin: 0;
}
.cam-overlay-sub {
  margin: 0;
  max-width: 16rem;
  opacity: 0.85;
  font-size: 0.95rem;
}
.btn.cam-start {
  font-size: 1.2rem;
  min-height: 3.4rem;
  padding: 0.95rem 1.4rem;
  width: min(100%, 18rem);
}
.conv-secondary {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: center;
  width: 100%;
}
.corrected-flag {
  display: inline-block;
  margin: 0.35rem 0 0.5rem;
  padding: 0.35rem 0.75rem;
  border-radius: 0.5rem;
  background: #d7eee6;
  color: var(--good);
  font-weight: 800;
  font-size: 0.92rem;
  white-space: pre-line;
}
.alt-block {
  margin-top: 1.25rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
}
.alt-heading {
  font-family: var(--display);
  font-size: 1.15rem;
  margin: 0 0 0.25rem;
}
.alt-sub { margin: 0 0 0.85rem; opacity: 0.72; font-size: 0.92rem; }
.alt-list { display: grid; gap: 0.75rem; }
.alt-card {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 0.75rem;
  align-items: center;
  width: 100%;
  text-align: left;
  padding: 0.75rem;
  min-height: 5.5rem;
  border-radius: 0.85rem;
  border: 1px solid var(--line);
  background: rgba(255, 252, 246, 0.95);
  cursor: pointer;
  transition: transform 0.12s ease, border-color 0.12s ease, box-shadow 0.12s ease;
  -webkit-tap-highlight-color: transparent;
}
.alt-card:active, .alt-card:hover {
  transform: translateY(-1px);
  border-color: var(--accent);
  box-shadow: 0 8px 22px rgba(26, 23, 20, 0.1);
}
.alt-card.busy { opacity: 0.6; pointer-events: none; }
.alt-card img {
  width: 72px;
  height: 100px;
  object-fit: cover;
  border-radius: 0.45rem;
  background: #ddd;
  border: 1px solid var(--line);
}
.alt-card-body { min-width: 0; }
.alt-card-name {
  font-family: var(--display);
  font-weight: 800;
  font-size: 1.05rem;
  margin: 0 0 0.2rem;
  line-height: 1.15;
}
.alt-card-meta {
  margin: 0;
  font-size: 0.92rem;
  opacity: 0.85;
  line-height: 1.35;
  word-break: break-word;
}
.alt-card-diff {
  margin: 0.35rem 0 0;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--accent);
}
.alt-card-variant {
  margin: 0.35rem 0 0;
  font-size: 0.95rem;
  color: var(--accent);
}
.edition-line {
  font-weight: 700;
  color: var(--accent);
  margin-top: 0.2rem;
}
.alt-card-select {
  margin-top: 0.45rem;
  display: inline-block;
  font-weight: 800;
  font-size: 0.88rem;
  color: var(--accent-2);
}
.conv-result .alt-block { text-align: left; margin-top: 1rem; }
.conv-result .alt-card { background: rgba(255,252,246,0.96); color: var(--ink); }
.feedback-dash, .session-dash {
  padding: 1rem; border-radius: 1rem; background: var(--panel);
  border: 1px solid var(--line); box-shadow: var(--shadow);
  margin-bottom: 1rem;
}
.feedback-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 0.65rem;
  margin: 0.75rem 0 1rem;
}
.feedback-stat {
  padding: 0.7rem 0.75rem;
  border-radius: 0.65rem;
  background: rgba(26,23,20,0.04);
}
.feedback-stat .n {
  font-family: var(--display);
  font-size: 1.45rem;
  font-weight: 800;
  line-height: 1;
}
.feedback-stat .l { font-size: 0.78rem; opacity: 0.7; margin-top: 0.25rem; }
.diag-section-title {
  font-family: var(--display);
  font-size: 1.2rem;
  margin: 1.25rem 0 0.6rem;
}
.recall-callout {
  padding: 0.85rem 1rem;
  border-radius: 0.75rem;
  background: #e8f3ef;
  border: 1px solid rgba(31,107,92,0.25);
  font-weight: 600;
  margin-top: 0.5rem;
}

.demo-box, .diag {
  padding: 1rem; border-radius: 1rem; background: var(--panel);
  border: 1px solid var(--line); box-shadow: var(--shadow);
}
.diag-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 0.8rem; }
.diag-card img { width: 100%; border-radius: 0.5rem; border: 1px solid var(--line); }
.muted { opacity: 0.65; }
pre {
  overflow: auto; background: #1a1714; color: #f3efe6; padding: 0.8rem;
  border-radius: 0.6rem; font-size: 0.78rem;
}

.foot {
  position: fixed; left: 0; right: 0; bottom: 0;
  display: flex; justify-content: space-between; gap: 1rem;
  padding: 0.55rem 1.25rem; font-size: 0.78rem;
  background: rgba(26,23,20,0.92); color: #f3efe6;
}

.quality-line { color: var(--accent, #c4a574); font-size: 0.9rem; }

.btn.huge {
  font-size: 1.35rem;
  padding: 1rem 1.75rem;
  letter-spacing: 0.04em;
  min-width: 10rem;
}

body.convention-mode .top { opacity: 0.85; }
body.convention-mode .foot { display: none; }

.convention-shell {
  max-width: 720px;
  margin: 0 auto;
  padding-bottom: 2rem;
}
.convention-title {
  font-family: Syne, sans-serif;
  font-size: clamp(1.8rem, 5vw, 2.6rem);
  margin: 0 0 0.35rem;
}
.convention-lede { margin-bottom: 1rem; }
.convention-stage {
  aspect-ratio: 3 / 4;
  max-height: min(68vh, 640px);
  width: min(100%, 520px);
  margin: 0 auto;
}
.convention-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
  margin-top: 1rem;
}
.convention-actions[hidden] {
  display: none !important;
}
.conv-result {
  margin-top: 1.25rem;
  text-align: center;
  padding: 1.25rem 1rem 1.5rem;
  background: linear-gradient(180deg, rgba(40,36,30,0.55), rgba(26,23,20,0.85));
  border: 1px solid rgba(243,239,230,0.12);
}
.conv-result img {
  width: min(280px, 70vw);
  height: auto;
  margin: 0.75rem auto;
  display: block;
  object-fit: contain;
}
.conv-conf {
  font-family: Syne, sans-serif;
  font-size: 1.1rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.conv-conf.high { color: #6fbf73; }
.conv-conf.medium { color: #d4a84b; }
.conv-conf.low { color: #d4844b; }
.conv-conf.no { color: #c45c5c; }
.conv-result h2 {
  font-family: Syne, sans-serif;
  font-size: clamp(1.4rem, 4vw, 2rem);
  margin: 0.35rem 0;
}

@media (max-width: 720px) {
  .result-grid { grid-template-columns: 1fr; }
  .top { flex-direction: column; align-items: flex-start; }
  .convention-actions { flex-direction: column; align-items: stretch; }
}