:root {
  --bg: #14151a;
  --panel: #1f212a;
  --text: #f2f2f2;
  --muted: #9a9ca6;
  --accent: #e63946;
  --success: #2a9d5c;
  --warning: #e8912d;
  --error: #d64545;
}

* { box-sizing: border-box; }

[hidden] { display: none !important; }

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid #2c2e38;
}

h1 {
  font-size: 18px;
  margin: 0;
}

button {
  font-size: 16px;
  padding: 12px 18px;
  border-radius: 10px;
  border: none;
  background: var(--accent);
  color: white;
  cursor: pointer;
}

button.ghost {
  background: transparent;
  border: 1px solid #444;
  color: var(--muted);
  padding: 8px 14px;
  font-size: 13px;
}

#torch-btn {
  width: 100%;
  max-width: 420px;
}

#torch-btn.on {
  background: var(--warning);
  border-color: var(--warning);
  color: #23180a;
}

#pin-screen {
  display: flex;
  flex-direction: column;
  gap: 14px;
  align-items: center;
  padding: 60px 24px;
  text-align: center;
}

#pin-input {
  width: 100%;
  max-width: 280px;
  font-size: 20px;
  padding: 14px;
  border-radius: 10px;
  border: 1px solid #444;
  background: var(--panel);
  color: var(--text);
  text-align: center;
  letter-spacing: 2px;
}

.error {
  color: var(--error);
}

#scan-screen {
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  align-items: center;
}

#reader {
  width: 100%;
  max-width: 420px;
  border-radius: 14px;
  overflow: hidden;
  border: 2px solid #2c2e38;
}

/* Sur certains mobiles (Android/Chrome notamment), le <video> de la caméra
   est composité par le matériel et ignore le z-index CSS, s'affichant
   toujours au-dessus du reste de la page. Forcer une opacité < 1 bascule
   le navigateur sur un compositing logiciel normal, où le z-index de la
   pop-in est respecté. */
#reader video {
  opacity: 0.9999;
}

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.65);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 999999;
  padding: 20px;
}

.modal-overlay.hidden {
  display: none;
}

.modal-content {
  width: min(360px, 100%);
  background: var(--panel);
  border-radius: 18px;
  padding: 36px 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
  text-align: center;
  border: 2px solid #2c2e38;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.5);
}

.modal-content.success { border-color: var(--success); }
.modal-content.warning { border-color: var(--warning); }
.modal-content.error { border-color: var(--error); }

#modal-message {
  font-size: 18px;
  font-weight: 600;
  margin: 0;
}

.modal-content.loading #modal-message { color: var(--muted); font-weight: 400; }
.modal-content.success #modal-message { color: var(--success); }
.modal-content.warning #modal-message { color: var(--warning); }
.modal-content.error #modal-message { color: var(--error); }

.spinner {
  width: 40px;
  height: 40px;
  border: 4px solid #34363f;
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.modal-content:not(.loading) .spinner {
  display: none;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

#modal-btn {
  width: 100%;
}

.modal-content.success #modal-btn { background: var(--success); }
.modal-content.warning #modal-btn { background: var(--warning); color: #23180a; }
.modal-content.error #modal-btn { background: var(--error); }

#stats {
  color: var(--muted);
  font-size: 14px;
}

#manual-entry {
  width: 100%;
  max-width: 420px;
  text-align: center;
}

#manual-entry p {
  color: var(--muted);
  font-size: 13px;
  margin: 0 0 8px;
}

.manual-row {
  display: flex;
  gap: 8px;
}

#manual-input {
  flex: 1;
  min-width: 0;
  font-size: 16px;
  padding: 12px;
  border-radius: 10px;
  border: 1px solid #444;
  background: var(--panel);
  color: var(--text);
}

#manual-submit {
  flex-shrink: 0;
}