/* ── Variables ── */
:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --primary-light: #dbeafe;
  --secondary: #0f172a;
  --accent: #10b981;
  --danger: #ef4444;
  --warning: #f59e0b;
  --gray-50: #f8fafc;
  --gray-100: #f1f5f9;
  --gray-200: #e2e8f0;
  --gray-300: #cbd5e1;
  --gray-400: #94a3b8;
  --gray-500: #64748b;
  --gray-600: #475569;
  --gray-700: #334155;
  --gray-800: #1e293b;
  --gray-900: #0f172a;
  --font: 'Inter', system-ui, -apple-system, sans-serif;
  --radius: 10px;
  --shadow: 0 1px 3px rgba(0,0,0,.1), 0 1px 2px rgba(0,0,0,.06);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,.1), 0 2px 4px -1px rgba(0,0,0,.06);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,.1), 0 4px 6px -2px rgba(0,0,0,.05);
}

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

body {
  font-family: var(--font);
  background: var(--gray-50);
  color: var(--gray-800);
  line-height: 1.6;
  min-height: 100vh;
}

/* ── Typography ── */
h1 { font-size: 2rem; font-weight: 700; color: var(--gray-900); }
h2 { font-size: 1.5rem; font-weight: 600; color: var(--gray-800); }
h3 { font-size: 1.25rem; font-weight: 600; color: var(--gray-700); }
p  { color: var(--gray-600); }

/* ── Layout ── */
.container { max-width: 1200px; margin: 0 auto; padding: 0 1.5rem; }

/* ── Navbar ── */
.navbar {
  background: #fff;
  border-bottom: 1px solid var(--gray-200);
  padding: 1rem 0;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow);
}
.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.navbar-brand {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--primary);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.navbar-brand span { color: var(--gray-800); }
.navbar-nav { display: flex; align-items: center; gap: 1rem; }
.nav-link {
  color: var(--gray-600);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius);
  transition: all 0.2s;
}
.nav-link:hover { background: var(--gray-100); color: var(--primary); }

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.6rem 1.25rem;
  border-radius: var(--radius);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  text-decoration: none;
  border: none;
  transition: all 0.2s;
  white-space: nowrap;
}
.btn-primary   { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-secondary { background: var(--gray-100); color: var(--gray-700); border: 1px solid var(--gray-200); }
.btn-secondary:hover { background: var(--gray-200); }
.btn-success   { background: var(--accent); color: #fff; }
.btn-success:hover { filter: brightness(0.9); }
.btn-danger    { background: var(--danger); color: #fff; }
.btn-danger:hover  { filter: brightness(0.9); }
.btn-outline   { background: transparent; color: var(--primary); border: 1.5px solid var(--primary); }
.btn-outline:hover { background: var(--primary-light); }
.btn-sm        { padding: 0.35rem 0.85rem; font-size: 0.8rem; }
.btn-lg        { padding: 0.8rem 1.75rem; font-size: 1rem; }
.btn-block     { width: 100%; justify-content: center; }
.btn[disabled], .btn:disabled { opacity: 0.6; cursor: not-allowed; }

/* ── Cards ── */
.card {
  background: #fff;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.5rem;
}
.card-header {
  border-bottom: 1px solid var(--gray-200);
  padding-bottom: 1rem;
  margin-bottom: 1rem;
}
.card-title { font-size: 1.1rem; font-weight: 600; }

/* ── Forms ── */
.form-group { margin-bottom: 1.25rem; }
.form-label { display: block; font-size: 0.875rem; font-weight: 500; color: var(--gray-700); margin-bottom: 0.4rem; }
.form-control {
  width: 100%;
  padding: 0.6rem 0.9rem;
  border: 1.5px solid var(--gray-300);
  border-radius: var(--radius);
  font-size: 0.9rem;
  background: #fff;
  color: var(--gray-800);
  transition: border-color 0.2s, box-shadow 0.2s;
  appearance: none;
}
.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37,99,235,.15);
}
.form-control.is-invalid { border-color: var(--danger); }
.invalid-feedback { color: var(--danger); font-size: 0.8rem; margin-top: 0.25rem; display: block; }
.form-text { color: var(--gray-400); font-size: 0.8rem; margin-top: 0.25rem; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }

/* ── Auth Pages ── */
.auth-wrapper {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #1e3a8a 0%, #2563eb 50%, #0ea5e9 100%);
  padding: 2rem;
}
.auth-card {
  background: #fff;
  border-radius: 16px;
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 480px;
  padding: 2.5rem;
}
.auth-logo {
  text-align: center;
  margin-bottom: 2rem;
}
.auth-logo h1 { font-size: 1.5rem; color: var(--primary); margin-bottom: 0.25rem; }
.auth-logo p  { font-size: 0.9rem; color: var(--gray-500); }
.auth-divider {
  text-align: center;
  position: relative;
  margin: 1.5rem 0;
  color: var(--gray-400);
  font-size: 0.85rem;
}
.auth-divider::before, .auth-divider::after {
  content: '';
  position: absolute;
  top: 50%;
  width: 42%;
  height: 1px;
  background: var(--gray-200);
}
.auth-divider::before { left: 0; }
.auth-divider::after  { right: 0; }
.auth-footer { text-align: center; margin-top: 1.5rem; font-size: 0.875rem; color: var(--gray-500); }
.auth-footer a { color: var(--primary); text-decoration: none; font-weight: 500; }

/* ── Dashboard Layout ── */
.dashboard-wrapper { display: flex; min-height: 100vh; }
.sidebar {
  width: 260px;
  background: var(--secondary);
  color: #fff;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  overflow-y: auto;
  z-index: 50;
}
.sidebar-logo {
  padding: 1.5rem;
  border-bottom: 1px solid rgba(255,255,255,0.1);
  font-size: 1.1rem;
  font-weight: 700;
  color: #fff;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.sidebar-logo .logo-icon { color: var(--primary); font-size: 1.4rem; }
.sidebar-section { padding: 1rem 0; }
.sidebar-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--gray-500);
  padding: 0 1.25rem;
  margin-bottom: 0.4rem;
}
.sidebar-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.65rem 1.25rem;
  color: var(--gray-400);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  border-left: 3px solid transparent;
  transition: all 0.2s;
}
.sidebar-link:hover { background: rgba(255,255,255,.05); color: #fff; border-left-color: var(--gray-500); }
.sidebar-link.active { background: rgba(37,99,235,.2); color: #fff; border-left-color: var(--primary); }
.sidebar-link i { width: 18px; text-align: center; }
.sidebar-footer {
  margin-top: auto;
  padding: 1.25rem;
  border-top: 1px solid rgba(255,255,255,0.1);
}
.user-badge {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.user-avatar {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 0.9rem;
  color: #fff;
  flex-shrink: 0;
}
.user-info { flex: 1; min-width: 0; }
.user-name  { font-size: 0.875rem; font-weight: 600; color: #fff; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.user-role  { font-size: 0.75rem; color: var(--gray-400); text-transform: capitalize; }

.main-content { margin-left: 260px; flex: 1; }
.page-header {
  background: #fff;
  border-bottom: 1px solid var(--gray-200);
  padding: 1rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.page-title { font-size: 1.25rem; font-weight: 600; color: var(--gray-800); }
.page-body { padding: 2rem; }

/* ── Stats Cards ── */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1.25rem; margin-bottom: 2rem; }
.stat-card {
  background: #fff;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 1.25rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  box-shadow: var(--shadow);
}
.stat-icon {
  width: 48px;
  height: 48px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  flex-shrink: 0;
}
.stat-icon.blue   { background: var(--primary-light); color: var(--primary); }
.stat-icon.green  { background: #d1fae5; color: var(--accent); }
.stat-icon.yellow { background: #fef3c7; color: var(--warning); }
.stat-icon.red    { background: #fee2e2; color: var(--danger); }
.stat-value { font-size: 1.75rem; font-weight: 700; color: var(--gray-900); line-height: 1; }
.stat-label { font-size: 0.8rem; color: var(--gray-500); margin-top: 0.25rem; }

/* ── Tables ── */
.table-wrapper { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 0.875rem; }
thead th {
  background: var(--gray-50);
  padding: 0.75rem 1rem;
  text-align: left;
  font-weight: 600;
  color: var(--gray-600);
  border-bottom: 1px solid var(--gray-200);
  white-space: nowrap;
}
tbody td { padding: 0.85rem 1rem; border-bottom: 1px solid var(--gray-100); color: var(--gray-700); }
tbody tr:hover { background: var(--gray-50); }
tbody tr:last-child td { border-bottom: none; }

/* ── Badges ── */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.65rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
}
.badge-success  { background: #d1fae5; color: #065f46; }
.badge-warning  { background: #fef3c7; color: #92400e; }
.badge-danger   { background: #fee2e2; color: #991b1b; }
.badge-primary  { background: var(--primary-light); color: var(--primary-dark); }
.badge-gray     { background: var(--gray-100); color: var(--gray-600); }

/* ── Alerts ── */
.alert {
  padding: 0.85rem 1rem;
  border-radius: var(--radius);
  font-size: 0.875rem;
  margin-bottom: 1rem;
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
}
.alert-success { background: #d1fae5; color: #065f46; border: 1px solid #a7f3d0; }
.alert-danger  { background: #fee2e2; color: #991b1b; border: 1px solid #fca5a5; }
.alert-info    { background: var(--primary-light); color: var(--primary-dark); border: 1px solid #bfdbfe; }
.alert-warning { background: #fef3c7; color: #92400e; border: 1px solid #fde68a; }

/* ── Tabs ── */
.tabs { border-bottom: 2px solid var(--gray-200); display: flex; gap: 0.25rem; margin-bottom: 1.5rem; }
.tab-btn {
  padding: 0.6rem 1.1rem;
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--gray-500);
  transition: all 0.2s;
}
.tab-btn.active { color: var(--primary); border-bottom-color: var(--primary); }
.tab-btn:hover  { color: var(--primary); }
.tab-pane { display: none; }
.tab-pane.active { display: block; }

/* ── Modal ── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.5);
  z-index: 200;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}
.modal-overlay.open { display: flex; }
.modal {
  background: #fff;
  border-radius: 14px;
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 560px;
  max-height: 90vh;
  overflow-y: auto;
}
.modal-header {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--gray-200);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.modal-title { font-size: 1.1rem; font-weight: 600; }
.modal-close { background: none; border: none; cursor: pointer; color: var(--gray-400); font-size: 1.25rem; }
.modal-body   { padding: 1.5rem; }
.modal-footer { padding: 1rem 1.5rem; border-top: 1px solid var(--gray-200); display: flex; justify-content: flex-end; gap: 0.75rem; }

/* ── Professional Card ── */
.professional-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 1.25rem; }
.professional-card {
  background: #fff;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow);
  transition: box-shadow 0.2s;
}
.professional-card:hover { box-shadow: var(--shadow-md); }
.professional-card-header { display: flex; align-items: flex-start; gap: 1rem; margin-bottom: 1rem; }
.professional-avatar {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.1rem;
  flex-shrink: 0;
}
.professional-name { font-weight: 600; color: var(--gray-800); }
.professional-role { font-size: 0.8rem; color: var(--gray-500); }
.professional-fee  { font-size: 1rem; font-weight: 700; color: var(--primary); }
.specialisation-tags { display: flex; flex-wrap: wrap; gap: 0.4rem; margin: 0.75rem 0; }
.tag {
  background: var(--primary-light);
  color: var(--primary);
  font-size: 0.72rem;
  font-weight: 600;
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
}

/* ── Calendar / Slots ── */
.slots-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(90px, 1fr)); gap: 0.5rem; }
.slot-btn {
  padding: 0.5rem;
  text-align: center;
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius);
  background: #fff;
  font-size: 0.8rem;
  cursor: pointer;
  transition: all 0.2s;
}
.slot-btn:hover   { border-color: var(--primary); background: var(--primary-light); color: var(--primary); }
.slot-btn.selected { border-color: var(--primary); background: var(--primary); color: #fff; }
.slot-btn.occupied { background: var(--gray-100); color: var(--gray-400); cursor: not-allowed; border-color: var(--gray-200); }

/* ── Booking status helpers ── */
.status-pending   { color: var(--warning); }
.status-accepted  { color: var(--accent);  }
.status-completed { color: var(--primary); }
.status-declined, .status-cancelled { color: var(--danger); }

/* ── Spinner ── */
.spinner {
  display: inline-block;
  width: 18px;
  height: 18px;
  border: 2.5px solid rgba(255,255,255,.4);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  vertical-align: middle;
}
.spinner-dark {
  border-color: var(--gray-300);
  border-top-color: var(--primary);
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Empty state ── */
.empty-state { text-align: center; padding: 3rem 1rem; color: var(--gray-400); }
.empty-state i { font-size: 3rem; margin-bottom: 1rem; display: block; }
.empty-state p { font-size: 0.9rem; }

/* ── Responsive ── */
@media (max-width: 768px) {
  .sidebar { transform: translateX(-100%); }
  .main-content { margin-left: 0; }
  .form-row { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
}