:root {
  --green: #22c55e;
  --green-bg: #f0fdf4;
  --amber: #f59e0b;
  --amber-bg: #fffbeb;
  --red: #ef4444;
  --red-bg: #fef2f2;
  --blue: #3b82f6;
  --blue-bg: #eff6ff;
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-400: #9ca3af;
  --gray-600: #4b5563;
  --gray-800: #1f2937;
  --gray-900: #111827;
  --radius: 12px;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.08), 0 1px 2px rgba(0, 0, 0, 0.06);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--gray-50);
  color: var(--gray-900);
  line-height: 1.5;
  min-height: 100dvh;
}

.container {
  max-width: 480px;
  margin: 0 auto;
  padding: 16px;
}

h1 {
  font-size: 1.5rem;
  text-align: center;
  padding: 12px 0;
  color: var(--gray-900);
}

/* Cards */
.card {
  background: #fff;
  border-radius: var(--radius);
  padding: 16px;
  margin-bottom: 12px;
  box-shadow: var(--shadow);
  border: 1px solid var(--gray-200);
}

/* Status banners */
.banner {
  border-radius: var(--radius);
  padding: 12px 16px;
  margin-bottom: 16px;
  font-weight: 500;
}

.banner--active {
  background: var(--green-bg);
  border: 1px solid var(--green);
  color: #166534;
}

.banner--paused {
  background: var(--amber-bg);
  border: 1px solid var(--amber);
  color: #92400e;
}

.banner--empty {
  background: var(--gray-100);
  border: 1px solid var(--gray-200);
  color: var(--gray-600);
  text-align: center;
}

.banner--you {
  background: var(--blue-bg);
  border: 1px solid var(--blue);
  color: #1e40af;
}

.banner__label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 700;
  margin-bottom: 2px;
}

.banner__name {
  font-size: 1.1rem;
}

.banner__project {
  font-size: 0.875rem;
  opacity: 0.8;
}

/* Section headers */
.section-header {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--gray-400);
  font-weight: 600;
  margin: 20px 0 10px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--gray-200);
}

/* Queue items */
.queue-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.queue-item__num {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--gray-400);
  min-width: 24px;
  text-align: center;
  padding-top: 2px;
}

.queue-item__info {
  flex: 1;
  min-width: 0;
}

.queue-item__name {
  font-weight: 600;
  font-size: 0.95rem;
}

.queue-item__project {
  font-size: 0.85rem;
  color: var(--gray-600);
}

.card--you {
  border-color: var(--blue);
  background: var(--blue-bg);
}

/* Forms */
.form-group {
  margin-bottom: 12px;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--gray-600);
  margin-bottom: 4px;
}

.form-group input {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--gray-200);
  border-radius: 8px;
  font-size: 1rem;
  font-family: inherit;
  outline: none;
  transition: border-color 0.15s;
}

.form-group input:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 20px;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 600;
  font-family: inherit;
  border: none;
  cursor: pointer;
  transition: opacity 0.15s, background 0.15s;
  min-height: 44px;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn--primary {
  background: var(--blue);
  color: #fff;
  width: 100%;
}

.btn--primary:hover:not(:disabled) {
  background: #2563eb;
}

.btn--green {
  background: var(--green);
  color: #fff;
  width: 100%;
}

.btn--green:hover:not(:disabled) {
  background: #16a34a;
}

.btn--danger {
  background: var(--red-bg);
  color: var(--red);
  font-size: 0.8rem;
  padding: 6px 12px;
  min-height: 36px;
}

.btn--danger:hover:not(:disabled) {
  background: #fecaca;
}

.btn--small {
  font-size: 0.8rem;
  padding: 6px 10px;
  min-height: 36px;
  background: var(--gray-100);
  color: var(--gray-800);
}

.btn--small:hover:not(:disabled) {
  background: var(--gray-200);
}

.btn--amber {
  background: var(--amber);
  color: #fff;
}

.btn--amber:hover:not(:disabled) {
  background: #d97706;
}

/* Drag handle */
.drag-handle {
  cursor: grab;
  font-size: 1.2rem;
  color: var(--gray-400);
  padding: 4px;
  user-select: none;
  touch-action: none;
}

.drag-handle:active {
  cursor: grabbing;
}

.card--draggable {
  transition: box-shadow 0.15s, transform 0.15s;
}

.card--ghost {
  opacity: 0.4;
  background: var(--blue-bg);
  border-color: var(--blue);
}

/* Admin status bar */
.status-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  gap: 12px;
}

.status-bar__info {
  font-size: 0.9rem;
}

.status-indicator {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 600;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
}

.status-dot--active {
  background: var(--green);
}

.status-dot--paused {
  background: var(--amber);
}

/* Timer */
.timer {
  font-size: 0.85rem;
  color: var(--gray-600);
  margin-top: 4px;
}

/* Login overlay */
.overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 16px;
}

.overlay__card {
  background: #fff;
  border-radius: var(--radius);
  padding: 24px;
  width: 100%;
  max-width: 320px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
}

.overlay__card h2 {
  margin-bottom: 16px;
  font-size: 1.25rem;
}

/* QR section */
.qr-section {
  text-align: center;
}

.qr-section img {
  max-width: 200px;
  margin-bottom: 8px;
}

.qr-section__url {
  font-size: 0.85rem;
  color: var(--gray-600);
  word-break: break-all;
  margin-bottom: 8px;
}

/* Empty state */
.empty {
  text-align: center;
  color: var(--gray-400);
  padding: 20px 0;
  font-size: 0.9rem;
}

/* Error toast */
.toast {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--red);
  color: #fff;
  padding: 10px 20px;
  border-radius: 8px;
  font-size: 0.9rem;
  z-index: 200;
  animation: fadeInUp 0.3s ease;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateX(-50%) translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
  }
}

/* Fade in for queue items */
.card--enter {
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Hidden utility */
.hidden {
  display: none !important;
}

/* Responsive */
@media (min-width: 480px) {
  .container {
    padding: 24px;
  }
}

@media (min-width: 768px) {
  .container {
    padding: 32px;
  }

  .container--admin {
    max-width: 600px;
  }
}