:root {
  --bg: #f1f5f9;
  --surface: #ffffff;
  --accent: #0052d4;
  --accent-soft: #e8f0ff;
  --text: #0f172a;
  --muted: #64748b;
  --border: #e2e8f0;
  --ok: #15803d;
  --warn: #b45309;
  --danger: #b91c1c;
  --radius: 14px;
  --shadow: 0 8px 24px rgba(15, 23, 42, 0.06);
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
}

* { box-sizing: border-box; }
html, body {
  margin: 0;
  padding: 0;
  background: linear-gradient(180deg, #e8eef8 0%, var(--bg) 40%, #f8fafc 100%);
  color: var(--text);
  min-height: 100%;
}

body { padding-bottom: 6.5rem; }

.app {
  max-width: 860px;
  margin: 0 auto;
  padding: 0.85rem 0.85rem 1.5rem;
}

.topbar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.85rem;
}

.brand {
  font-weight: 700;
  letter-spacing: -0.02em;
  font-size: 1.05rem;
}

.brand span { color: var(--accent); }

.pill {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.35rem 0.75rem;
  font-size: 0.85rem;
  color: var(--muted);
  box-shadow: var(--shadow);
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 0.9rem;
  margin-bottom: 0.85rem;
}

.progress-track {
  height: 8px;
  background: #e2e8f0;
  border-radius: 999px;
  overflow: hidden;
}
.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, #0052d4, #00c4e8);
  width: 0%;
  transition: width 0.25s ease;
}

.viewer {
  position: relative;
  background: #0b1220;
  border-radius: 12px;
  overflow: hidden;
  min-height: 240px;
  touch-action: none;
  user-select: none;
}

.viewer img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 58vh;
  object-fit: contain;
  margin: 0 auto;
  transform-origin: center center;
  transition: transform 0.05s linear;
  background: #0b1220;
}

.viewer-tools {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
  margin-top: 0.65rem;
}

button, .btn {
  appearance: none;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  border-radius: 999px;
  padding: 0.55rem 0.95rem;
  font-weight: 600;
  font-size: 0.92rem;
  cursor: pointer;
}
button.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}
button:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}
button.ghost { background: transparent; }

.criterion {
  border-top: 1px solid var(--border);
  padding: 0.85rem 0 0.35rem;
}
.criterion:first-child { border-top: 0; padding-top: 0.2rem; }

.criterion h3 {
  margin: 0 0 0.2rem;
  font-size: 0.98rem;
}
.criterion .bisaya {
  color: var(--accent);
  font-weight: 700;
}
.criterion p {
  margin: 0 0 0.55rem;
  color: var(--muted);
  font-size: 0.86rem;
  line-height: 1.35;
}

.scale {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
  align-items: center;
}

.score-btn {
  width: 2.55rem;
  height: 2.55rem;
  border-radius: 50%;
  border: 2px solid var(--border);
  background: #fff;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0;
}
.score-btn.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  box-shadow: 0 0 0 3px var(--accent-soft);
}
.score-btn.na {
  width: auto;
  border-radius: 999px;
  padding: 0 0.7rem;
  font-size: 0.78rem;
}

.scale-hint {
  font-size: 0.75rem;
  color: var(--muted);
  margin-left: 0.15rem;
}

.dock {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(10px);
  border-top: 1px solid var(--border);
  padding: 0.7rem 0.85rem calc(0.7rem + env(safe-area-inset-bottom));
  display: flex;
  gap: 0.5rem;
  justify-content: center;
  z-index: 20;
}
.dock .btn-wide { min-width: 7.5rem; }

.save-status {
  font-size: 0.8rem;
  color: var(--muted);
}
.save-status.ok { color: var(--ok); }
.save-status.err { color: var(--danger); }

.gate, .summary {
  max-width: 480px;
  margin: 2rem auto;
  text-align: left;
}
.gate h1, .summary h1 {
  font-size: 1.35rem;
  margin: 0 0 0.5rem;
}
.muted { color: var(--muted); }
.hidden { display: none !important; }

.thumb-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(3.2rem, 1fr));
  gap: 0.35rem;
  max-height: 180px;
  overflow: auto;
}
.thumb {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.35rem 0.2rem;
  text-align: center;
  font-size: 0.68rem;
  background: #fff;
  cursor: pointer;
}
.thumb.done { background: #ecfdf5; border-color: #86efac; }
.thumb.partial { background: #fff7ed; border-color: #fdba74; }
.thumb.current { outline: 2px solid var(--accent); }

textarea {
  width: 100%;
  min-height: 64px;
  border-radius: 10px;
  border: 1px solid var(--border);
  padding: 0.55rem;
  font: inherit;
}

.banner {
  background: #fff7ed;
  border: 1px solid #fdba74;
  color: #9a3412;
  border-radius: 10px;
  padding: 0.65rem 0.75rem;
  font-size: 0.86rem;
  margin-bottom: 0.75rem;
}