/* ============================================
   General Styles & Font
   ============================================ */

* {
  font-family: "Cairo", system-ui, -apple-system, Segoe UI, Arial, sans-serif;
}

:root {
  --primary-color: #2c3e50;
  --secondary-color: #3498db;
  --success-color: #27ae60;
  --warning-color: #f39c12;
  --danger-color: #e74c3c;
  --light-bg: #ecf0f1;
  --white-bg: #ffffff;
  --text-dark: #2c3e50;
  --text-light: #7f8c8d;
  --border-color: #bdc3c7;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.15);
}

body {
  background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
  background-attachment: fixed;
  color: var(--text-dark);
  min-height: 100vh;
}

/* ============================================
   Navbar Styles
   ============================================ */

.navbar {
  background: var(--white-bg) !important;
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(10px);
}

.navbar-brand {
  font-weight: 800;
  letter-spacing: 0.3px;
  color: var(--primary-color) !important;
  font-size: 1.5rem;
}

.brand-logo {
  width: 40px;
  height: 40px;
  object-fit: contain;
  border-radius: 10px;
  border: 2px solid var(--secondary-color);
  transition: all 0.3s ease;
}

.brand-logo:hover {
  transform: scale(1.1);
  border-color: var(--primary-color);
}

.brand-title {
  font-weight: 800;
  letter-spacing: 0.2px;
  color: var(--primary-color);
}

/* ============================================
   Cards & Containers
   ============================================ */

.card {
  border: none;
  border-radius: 16px;
  box-shadow: var(--shadow-md);
  transition: all 0.3s ease;
  overflow: hidden;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.card-header {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
  color: white;
  border: none;
  border-radius: 16px 16px 0 0;
  font-weight: 600;
  padding: 1.5rem;
}

/* ============================================
   Dashboard Stats Cards
   ============================================ */

.stat-card {
  background: var(--white-bg);
  border-radius: 14px;
  padding: 1.5rem;
  border-left: 5px solid var(--secondary-color);
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  gap: 1rem;
  box-shadow: var(--shadow-sm);
}

.stat-card:hover {
  transform: translateX(4px);
  box-shadow: var(--shadow-md);
}

.stat-card.success {
  border-left-color: var(--success-color);
}

.stat-card.danger {
  border-left-color: var(--danger-color);
}

.stat-card.warning {
  border-left-color: var(--warning-color);
}

.stat-icon {
  font-size: 2.5rem;
  width: 60px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  background: var(--light-bg);
  color: var(--secondary-color);
  flex-shrink: 0;
}

.stat-icon.success {
  background: rgba(39, 174, 96, 0.1);
  color: var(--success-color);
}

.stat-icon.danger {
  background: rgba(231, 76, 60, 0.1);
  color: var(--danger-color);
}

.stat-icon.warning {
  background: rgba(243, 156, 18, 0.1);
  color: var(--warning-color);
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-light);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-weight: 600;
}

.stat-value {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--text-dark);
}

/* ============================================
   Tables
   ============================================ */

.table {
  border-collapse: separate;
  border-spacing: 0 0.5rem;
}

.table thead th {
  border: none;
  color: var(--text-light);
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.8rem;
  letter-spacing: 0.5px;
  padding: 1rem;
  background: transparent;
}

.table tbody td {
  border: none;
  padding: 1rem;
  vertical-align: middle;
  background: var(--white-bg);
}

.table tbody tr {
  border-radius: 12px;
  box-shadow: var(--shadow-sm);
  transition: all 0.3s ease;
}

.table tbody tr:hover {
  box-shadow: var(--shadow-md);
  transform: scale(1.01);
}

.table-responsive {
  border-radius: 14px;
  overflow: hidden;
}

/* ============================================
   Buttons
   ============================================ */

.btn {
  border-radius: 10px;
  font-weight: 600;
  padding: 0.6rem 1.2rem;
  transition: all 0.3s ease;
  border: none;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-size: 0.9rem;
}

.btn-primary {
  background: linear-gradient(135deg, var(--secondary-color) 0%, #2980b9 100%);
  color: white;
}

.btn-primary:hover {
  background: linear-gradient(135deg, #2980b9 0%, #1f618d 100%);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

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

.btn-dark:hover {
  background: #1a252f;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-outline-dark {
  color: var(--primary-color);
  border: 2px solid var(--primary-color);
}

.btn-outline-dark:hover {
  background: var(--primary-color);
  color: white;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-success {
  background: linear-gradient(135deg, var(--success-color) 0%, #229954 100%);
  color: white;
}

.btn-success:hover {
  background: linear-gradient(135deg, #229954 0%, #1e8449 100%);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-danger {
  background: linear-gradient(135deg, var(--danger-color) 0%, #c0392b 100%);
  color: white;
}

.btn-danger:hover {
  background: linear-gradient(135deg, #c0392b 0%, #a93226 100%);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.85rem;
}

.rounded-pill {
  border-radius: 50px !important;
}

/* ============================================
   Badges
   ============================================ */

.badge {
  padding: 0.6rem 1rem;
  border-radius: 20px;
  font-weight: 600;
  font-size: 0.85rem;
  letter-spacing: 0.5px;
}

.badge-primary {
  background: linear-gradient(135deg, var(--secondary-color) 0%, #2980b9 100%);
}

.badge-success {
  background: linear-gradient(135deg, var(--success-color) 0%, #229954 100%);
}

.badge-danger {
  background: linear-gradient(135deg, var(--danger-color) 0%, #c0392b 100%);
}

/* ============================================
   Progress Bar
   ============================================ */

.progress {
  border-radius: 999px;
  height: 10px;
  background: var(--light-bg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.progress-bar {
  border-radius: 999px;
  background: linear-gradient(90deg, var(--secondary-color) 0%, #2980b9 100%);
  transition: width 0.3s ease;
}

/* ============================================
   Forms & Inputs
   ============================================ */

.form-control,
.form-select {
  border-radius: 10px;
  border: 2px solid var(--light-bg);
  padding: 0.8rem 1rem;
  transition: all 0.3s ease;
  font-weight: 500;
}

.form-control:focus,
.form-select:focus {
  border-color: var(--secondary-color);
  box-shadow: 0 0 0 0.2rem rgba(52, 152, 219, 0.15);
}

.form-label {
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 0.6rem;
  text-transform: uppercase;
  letter-spacing: 0.3px;
  font-size: 0.9rem;
}

/* ============================================
   Alerts
   ============================================ */

.alert {
  border: none;
  border-radius: 12px;
  padding: 1.2rem;
  font-weight: 500;
  box-shadow: var(--shadow-sm);
  border-right: 5px solid var(--secondary-color);
}

.alert-success {
  background: rgba(39, 174, 96, 0.1);
  color: var(--success-color);
  border-right-color: var(--success-color);
}

.alert-danger {
  background: rgba(231, 76, 60, 0.1);
  color: var(--danger-color);
  border-right-color: var(--danger-color);
}

.alert-warning {
  background: rgba(243, 156, 18, 0.1);
  color: var(--warning-color);
  border-right-color: var(--warning-color);
}

.alert-info {
  background: rgba(52, 152, 219, 0.1);
  color: var(--secondary-color);
  border-right-color: var(--secondary-color);
}

/* ============================================
   Headers & Titles
   ============================================ */

h1, h2, h3, h4, h5, h6 {
  color: var(--text-dark);
  font-weight: 700;
  letter-spacing: -0.5px;
}

h1 {
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
}

h2 {
  font-size: 2rem;
  margin-bottom: 0.5rem;
}

h3 {
  font-size: 1.5rem;
}

h4 {
  font-size: 1.25rem;
}

.page-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 2px solid var(--light-bg);
}

.page-header h2 {
  margin: 0;
}

/* ============================================
   Utility Classes
   ============================================ */

.text-primary {
  color: var(--secondary-color) !important;
}

.text-success {
  color: var(--success-color) !important;
}

.text-danger {
  color: var(--danger-color) !important;
}

.text-warning {
  color: var(--warning-color) !important;
}

.text-muted {
  color: var(--text-light) !important;
}

.bg-light-primary {
  background: rgba(52, 152, 219, 0.1) !important;
}

.bg-light-success {
  background: rgba(39, 174, 96, 0.1) !important;
}

.bg-light-danger {
  background: rgba(231, 76, 60, 0.1) !important;
}

/* ============================================
   Responsive Design
   ============================================ */

@media (max-width: 768px) {
  h1 {
    font-size: 1.8rem;
  }

  h2 {
    font-size: 1.5rem;
  }

  .stat-card {
    margin-bottom: 1rem;
  }

  .page-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }

  .page-header h2 {
    margin-bottom: 0;
  }

  .btn {
    padding: 0.5rem 1rem;
    font-size: 0.85rem;
  }
}

/* Global floating back button */
.back-btn {
  position: fixed;
  left: 20px;
  bottom: 20px;
  z-index: 1100;
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.5rem 0.9rem;
  background: var(--white-bg);
  color: var(--text-dark);
  border-radius: 999px;
  box-shadow: 0 6px 20px rgba(0,0,0,0.12);
  border: 1px solid rgba(44,62,80,0.06);
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.back-btn i { font-size: 1rem; }
.back-btn .back-label { font-weight: 700; }

.back-btn:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 30px rgba(0,0,0,0.16);
}

@media (max-width: 480px) {
  .back-btn { left: 12px; bottom: 12px; padding: 0.45rem 0.75rem; }
  .back-btn .back-label { display: none; }
}

@media print {
  .back-btn { display: none !important; }
}