:root {
  color-scheme: dark;
  --bg: #0b1020;
  --card: rgba(255,255,255,0.06);
  --border: rgba(255,255,255,0.12);
  --text: rgba(255,255,255,0.92);
  --muted: rgba(255,255,255,0.65);
  --shadow: rgba(0,0,0,0.35);
}

* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-items: center;
  background: radial-gradient(1000px 600px at 30% 20%, rgba(56,189,248,0.18), transparent 55%),
              radial-gradient(900px 600px at 70% 70%, rgba(168,85,247,0.14), transparent 60%),
              var(--bg);
  color: var(--text);
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  padding: 20px;
}

.card {
  width: min(760px, 100%);
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 18px;
  box-shadow: 0 18px 50px var(--shadow);
  padding: 18px;
  backdrop-filter: blur(10px);
}

.header h1 {
  margin: 0 0 6px 0;
  font-size: 20px;
}
.header p {
  margin: 0 0 16px 0;
  color: var(--muted);
  font-size: 14px;
}

.grid {
  display: grid;
  gap: 12px;
}

.field span {
  display: block;
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 6px;
}

.field input {
  width: 100%;
  padding: 12px 12px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: rgba(0,0,0,0.25);
  color: var(--text);
  outline: none;
}

.field input:focus {
  border-color: rgba(56,189,248,0.55);
}

.row {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
}

.btn {
  padding: 10px 14px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: rgba(0,0,0,0.18);
  color: var(--text);
  cursor: pointer;
}

.btn.primary {
  border-color: rgba(56,189,248,0.55);
}

.btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.status {
  margin-left: auto;
  font-size: 12px;
  color: var(--muted);
  padding: 6px 10px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: rgba(0,0,0,0.18);
}

.logWrap {
  margin-top: 14px;
  border: 1px solid var(--border);
  border-radius: 14px;
  overflow: hidden;
}

.logHeader {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 12px;
  background: rgba(0,0,0,0.18);
  border-bottom: 1px solid var(--border);
}

.hint {
  color: var(--muted);
  font-size: 12px;
}

.log {
  margin: 0;
  padding: 12px;
  min-height: 220px;
  max-height: 380px;
  overflow: auto;
  background: rgba(0,0,0,0.22);
  font-size: 12px;
  line-height: 1.45;
  white-space: pre-wrap;
  word-break: break-word;
}

.footer {
  margin-top: 12px;
  color: var(--muted);
}
code {
  color: rgba(56,189,248,0.92);
}
/* Scan modal (iOS/Android friendly) */
.scanModal {
  position: fixed;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 999999;
}
.scanModal.show { display: flex; }
.scanBackdrop {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.55);
}
.scanPanel {
  position: relative;
  width: min(520px, 92vw);
  background: rgba(10, 14, 28, 0.95);
  border: 1px solid var(--border);
  border-radius: 18px;
  box-shadow: 0 18px 50px var(--shadow);
  padding: 14px;
  backdrop-filter: blur(12px);
}
.scanHeader {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 10px;
}
.scanTitle { font-weight: 700; }
.scanVideo {
  width: 100%;
  aspect-ratio: 4 / 3;
  background: rgba(0,0,0,0.35);
  border-radius: 14px;
  border: 1px solid var(--border);
  object-fit: cover;
}
.scanCanvas { display:none; }
.scanRow {
  display: flex;
  gap: 10px;
  margin-top: 10px;
  flex-wrap: wrap;
}
.scanHint {
  margin-top: 10px;
  font-size: 12px;
  color: var(--muted);
}