/* style.css — Randevu sistemi genel stiller */
:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --bg: #f3f4f6;
  --card-bg: #ffffff;
  --text: #1f2937;
  --muted: #6b7280;
  --border: #e5e7eb;
  --danger: #dc2626;
  --success: #16a34a;
  --radius: 12px;
  --shadow: 0 1px 3px rgba(0,0,0,0.1);
}

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

body {
  font-family: system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

.container {
  max-width: 720px;
  margin: 0 auto;
  padding: 20px 16px;
}

.site-header {
  text-align: center;
  padding: 24px 0 20px;
}

.site-header h1 {
  font-size: 1.9rem;
  color: var(--text);
}

.subtitle {
  color: var(--muted);
  font-size: 0.95rem;
  margin-bottom: 16px;
}

.tabs {
  display: inline-flex;
  gap: 6px;
  background: var(--card-bg);
  padding: 4px;
  border-radius: 999px;
  box-shadow: var(--shadow);
}

.tab {
  padding: 8px 18px;
  border-radius: 999px;
  text-decoration: none;
  color: var(--muted);
  font-weight: 500;
  font-size: 0.9rem;
  transition: all 0.2s;
}

.tab.active {
  background: var(--primary);
  color: #fff;
}

.tab:not(.active):hover {
  background: var(--border);
  color: var(--text);
}

.card {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 24px;
  margin-bottom: 20px;
}

.card h2 {
  font-size: 1.3rem;
  margin-bottom: 20px;
}

.form-row {
  margin-bottom: 16px;
}

.form-row label {
  display: block;
  font-weight: 500;
  font-size: 0.9rem;
  margin-bottom: 6px;
}

.form-row input,
.form-row select,
.form-row textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 0.95rem;
  font-family: inherit;
  background: #fff;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.form-row input:focus,
.form-row select:focus,
.form-row textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37,99,235,0.12);
}

.form-row small {
  color: var(--muted);
  font-size: 0.8rem;
}

.btn {
  padding: 11px 20px;
  border: none;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s, transform 0.1s;
}

.btn:active { transform: scale(0.98); }

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

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

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

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

.btn-secondary:hover { background: #d1d5db; }

.btn-danger {
  background: transparent;
  color: var(--danger);
  border: 1px solid var(--danger);
  padding: 6px 12px;
  font-size: 0.8rem;
  border-radius: 6px;
}

.btn-danger:hover { background: #fef2f2; }

.result {
  margin-top: 20px;
  padding: 14px 16px;
  border-radius: 8px;
  font-size: 0.95rem;
}

.result.success {
  background: #f0fdf4;
  border: 1px solid #bbf7d0;
  color: var(--success);
}

.result.error {
  background: #fef2f2;
  border: 1px solid #fecaca;
  color: var(--danger);
}

/* Admin panel */
.admin-controls {
  display: flex;
  align-items: flex-end;
  gap: 12px;
  flex-wrap: wrap;
}

.admin-controls .form-row {
  flex: 1;
  min-width: 200px;
  margin-bottom: 0;
}

.admin-controls .btn { flex-shrink: 0; }

.summary {
  margin-top: 16px;
  padding: 12px 16px;
  background: #eff6ff;
  border: 1px solid #bfdbfe;
  border-radius: 8px;
  font-weight: 500;
  color: var(--primary-dark);
}

.appointment-list {
  margin-top: 20px;
}

.appointment-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: 10px;
  margin-bottom: 10px;
  background: #fafafa;
  flex-wrap: wrap;
}

.appointment-item .time-badge {
  background: var(--primary);
  color: #fff;
  font-weight: 700;
  font-size: 1rem;
  padding: 6px 12px;
  border-radius: 8px;
  min-width: 72px;
  text-align: center;
}

.appointment-item .info {
  flex: 1;
  min-width: 180px;
}

.appointment-item .info .name {
  font-weight: 600;
}

.appointment-item .info .detail {
  color: var(--muted);
  font-size: 0.85rem;
}

.appointment-item .actions { flex-shrink: 0; }

.empty-state {
  text-align: center;
  color: var(--muted);
  padding: 40px 0;
}

.site-footer {
  text-align: center;
  color: var(--muted);
  font-size: 0.85rem;
  padding: 20px 0;
}

/* Responsive */
@media (max-width: 600px) {
  .container { padding: 12px; }
  .site-header h1 { font-size: 1.5rem; }
  .card { padding: 18px; }
  .appointment-item { flex-direction: column; align-items: flex-start; }
  .appointment-item .actions { align-self: stretch; }
  .appointment-item .actions .btn-danger { width: 100%; }
}