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

:root {
  --page:        #0d0d0d;
  --surface:      #1a1a19;
  --ink:          #ffffff;
  --ink-secondary: #c3c2b7;
  --ink-muted:     #898781;
  --border:        rgba(255, 255, 255, 0.10);
  --track:         #2c2c2a;
  --accent:        #3987e5;
  --good:          #0ca30c;
}

body {
  min-height: 100vh;
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  background: var(--page);
  color: var(--ink);
}

/* Lock screen */

.lock-screen {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--page);
}

.lock-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  width: min(320px, 90vw);
  padding: 2rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  text-align: center;
}

.lock-form h1 {
  font-size: 1.25rem;
  font-weight: 600;
}

.lock-form input {
  padding: 0.7rem 0.9rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--page);
  color: var(--ink);
  font-size: 1rem;
}

.lock-form button {
  padding: 0.7rem 0.9rem;
  border-radius: 8px;
  border: none;
  background: var(--accent);
  color: #fff;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
}

.lock-form button:hover {
  filter: brightness(1.1);
}

.lock-error {
  color: #e66767;
  font-size: 0.85rem;
}

/* Dashboard */

.dashboard {
  max-width: 960px;
  margin: 0 auto;
  padding: 2.5rem 1.5rem 4rem;
}

.dashboard-header {
  text-align: center;
  margin-bottom: 2rem;
}

.dashboard-header h1 {
  font-size: clamp(1.75rem, 5vw, 2.5rem);
}

.subtitle {
  margin-top: 0.4rem;
  color: var(--ink-secondary);
  font-size: 0.95rem;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
}

.stat-tile {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.stat-tile.hero {
  grid-column: 1 / -1;
  align-items: center;
  text-align: center;
  padding: 2rem 1.25rem;
}

.stat-label {
  color: var(--ink-muted);
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.stat-value {
  font-size: 2.25rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.stat-tile.hero .stat-value {
  font-size: clamp(3rem, 12vw, 5rem);
}

.stat-value--small {
  font-size: 1.4rem;
}

.stat-sub {
  color: var(--ink-secondary);
  font-size: 0.85rem;
}

.customer-controls {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.3rem;
}

.customer-controls button {
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--page);
  color: var(--ink);
  font-size: 1.25rem;
  line-height: 1;
  cursor: pointer;
}

.customer-controls button:hover {
  filter: brightness(1.3);
}

.customer-controls input {
  flex: 1;
  min-width: 0;
  text-align: center;
  padding: 0.5rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--page);
  color: var(--ink);
  font-size: 1.1rem;
  font-variant-numeric: tabular-nums;
}

.progress-bar {
  height: 10px;
  border-radius: 999px;
  background: var(--track);
  overflow: hidden;
  margin-top: 0.4rem;
}

.progress-fill {
  height: 100%;
  border-radius: 999px;
  background: var(--accent);
  width: 0%;
  transition: width 0.3s ease;
}

.progress-fill.goal-reached {
  background: var(--good);
}