:root {
  --primary: #3b82f6;
  --primary-hover: #2563eb;
  --bg: #f8fafc;
  --card-bg: #ffffff;
  --text: #1e293b;
  --text-muted: #64748b;
  --border: #e2e8f0;
  --danger: #ef4444;
  --danger-hover: #dc2626;
  --radius: 12px;
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

body {
  background-color: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  justify-content: center;
  padding: 20px;
}

.app-container {
  width: 100%;
  max-width: 600px;
}

header {
  text-align: center;
  margin-bottom: 24px;
}

header h1 {
  font-size: 2rem;
  font-weight: 800;
  color: var(--primary);
}

.subtitle {
  color: var(--text-muted);
  font-size: 0.95rem;
}

.actions-bar {
  margin-bottom: 20px;
  display: flex;
  justify-content: flex-end;
}

.btn {
  padding: 10px 18px;
  border-radius: var(--radius);
  border: none;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: background 0.2s, transform 0.1s;
}

.btn:active {
  transform: scale(0.97);
}

.btn-primary {
  background-color: var(--primary);
  color: white;
}

.btn-primary:hover {
  background-color: var(--primary-hover);
}

.btn-secondary {
  background-color: var(--border);
  color: var(--text);
}

.btn-secondary:hover {
  background-color: #cbd5e1;
}

.counters-grid {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.counter-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.counter-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.counter-title {
  font-size: 1.15rem;
  font-weight: 700;
}

.counter-stats {
  font-size: 0.9rem;
  color: var(--text-muted);
  font-weight: 500;
}

.punch-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(36px, 1fr));
  gap: 8px;
  background: var(--bg);
  padding: 12px;
  border-radius: 8px;
}

.punch-slot {
  aspect-ratio: 1;
  border-radius: 50%;
  border: 2px dashed var(--border);
  background: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.2s;
}

.punch-slot.punched {
  background: var(--primary);
  border: 2px solid var(--primary);
  color: white;
  box-shadow: 0 2px 4px rgba(59, 130, 246, 0.3);
}

.counter-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 4px;
}

.btn-punch {
  flex: 1;
  padding: 12px;
  background-color: var(--primary);
  color: white;
  border-radius: var(--radius);
  border: none;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  transition: background 0.2s;
}

.btn-punch:hover {
  background-color: var(--primary-hover);
}

.btn-punch:disabled {
  background-color: var(--border);
  color: var(--text-muted);
  cursor: not-allowed;
}

.btn-icon {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 1.1rem;
  padding: 8px;
  border-radius: 50%;
  transition: background 0.2s, color 0.2s;
}

.btn-icon:hover {
  background: var(--bg);
  color: var(--danger);
}

/* Modal */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  z-index: 1000;
  opacity: 1;
  transition: opacity 0.2s;
}

.modal.hidden {
  display: none;
  opacity: 0;
}

.modal-content {
  background: var(--card-bg);
  padding: 24px;
  border-radius: var(--radius);
  width: 100%;
  max-width: 400px;
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
}

.form-group input {
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid var(--border);
  font-size: 1rem;
  outline: none;
  transition: border-color 0.2s;
}

.form-group input:focus {
  border-color: var(--primary);
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 8px;
}

.empty-state {
  text-align: center;
  padding: 40px 20px;
  color: var(--text-muted);
}