/* Airline Industry Professional Styling */
:root {
    --primary-blue: #1e3a8a;
    --secondary-blue: #3b82f6;
    --accent-gold: #f59e0b;
    --success-green: #10b981;
    --warning-orange: #f97316;
    --danger-red: #ef4444;
    --dark-navy: #1e293b;
    --light-gray: #f8fafc;
    --border-gray: #e2e8f0;
}

body {
    background-color: var(--light-gray);
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

/* Navigation Styling */
.navbar {
    background: linear-gradient(135deg, #2c3e50 0%, #34495e 100%) !important;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

/* Modern rounded badge styling for navigation and general use */
.badge-modern {
    padding: 0.4rem 0.8rem;
    border-radius: 16px;
    font-size: 0.8rem;
    font-weight: 500;
    border: none;
    display: inline-block;
    white-space: nowrap;
}

.badge-modern.bg-info {
    background: #6c757d !important;
    color: white;
}

.badge-modern.bg-danger {
    background: #dc3545 !important;
    color: white;
}

.badge-modern.bg-success {
    background: #28a745 !important;
    color: white;
}

.badge-modern.bg-warning {
    background: #ffc107 !important;
    color: #212529;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .badge-modern {
        padding: 0.3rem 0.6rem;
        font-size: 0.75rem;
    }
}

.navbar-brand {
    font-size: 1.5rem;
    font-weight: 700;
}

.navbar-nav .nav-link {
    font-weight: 500;
    transition: all 0.3s ease;
}

.navbar-nav .nav-link:hover {
    /* Removed transform to prevent movement */
}

/* Card Enhancements */
.card {
    border: none;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    transition: all 0.3s ease;
}

.card:hover {
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    /* Removed transform to prevent movement */
}

.card-header {
    border-bottom: 2px solid rgba(255, 255, 255, 0.1);
    font-weight: 600;
}

/* Calendar Grid Styling */
.calendar-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 12px;
    padding: 15px 0;
}

.calendar-block {
    background: white;
    border: 2px solid var(--border-gray);
    border-radius: 8px;
    padding: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    min-height: 110px;
    display: flex;
    flex-direction: column;
}

.calendar-block:before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--border-gray);
    transition: all 0.3s ease;
}

.calendar-block.available:before {
    background: var(--success-green);
}

.calendar-block.unavailable:before {
    background: var(--danger-red);
}

.calendar-block.peak-period:before {
    background: linear-gradient(45deg, var(--warning-orange), var(--accent-gold));
}

.calendar-block:hover {
    box-shadow: 0 12px 24px -6px rgba(0, 0, 0, 0.15);
    border-color: var(--secondary-blue);
    /* Removed transform to prevent movement */
}

.block-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 6px;
    font-weight: 600;
    color: var(--dark-navy);
    font-size: 0.95rem;
}

.block-dates {
    font-size: 0.85rem;
    color: #6b7280;
    margin-bottom: 3px;
    font-weight: 500;
}

.block-year {
    font-size: 0.75rem;
    color: #9ca3af;
    margin-bottom: 8px;
}

.slot-info {
    border-top: 1px solid var(--border-gray);
    padding-top: 6px;
    margin-top: auto;
}

.slots-available {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--success-green);
}

.calendar-block.unavailable .slots-available {
    color: var(--danger-red);
}

/* Status Badges */
.badge {
    font-weight: 500;
    font-size: 0.8rem;
    padding: 0.5em 0.8em;
}

/* Button Enhancements */
.btn {
    font-weight: 500;
    border-radius: 8px;
    transition: all 0.3s ease;
    border: none;
}

.btn:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    /* Removed transform to prevent movement */
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-blue), var(--secondary-blue));
}

.btn-success {
    background: linear-gradient(135deg, var(--success-green), #059669);
}

.btn-warning {
    background: linear-gradient(135deg, var(--warning-orange), var(--accent-gold));
}

.btn-danger {
    background: linear-gradient(135deg, var(--danger-red), #dc2626);
}

/* Table Enhancements */
.table {
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.table thead th {
    border: none;
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.85rem;
    letter-spacing: 0.5px;
}

.table tbody tr {
    transition: all 0.2s ease;
}

.table tbody tr:hover {
    background-color: rgba(59, 130, 246, 0.05);
    /* Removed transform to prevent movement */
}

/* Alert Styling */
.alert {
    border: none;
    border-radius: 10px;
    font-weight: 500;
}

.alert-dismissible .btn-close {
    padding: 1rem 1rem;
}

/* Modal Enhancements */
.modal-content {
    border: none;
    border-radius: 15px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
}

.modal-header {
    border-bottom: none;
    border-radius: 15px 15px 0 0;
}

.modal-footer {
    border-top: 1px solid var(--border-gray);
    border-radius: 0 0 15px 15px;
}

/* Form Enhancements */
.form-control, .form-select {
    border: 2px solid var(--border-gray);
    border-radius: 8px;
    transition: all 0.3s ease;
    font-weight: 500;
}

.form-control:focus, .form-select:focus {
    border-color: var(--secondary-blue);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-label {
    font-weight: 600;
    color: var(--dark-navy);
    margin-bottom: 8px;
}

/* Dashboard Statistics Cards */
.card.bg-primary,
.card.bg-info,
.card.bg-success,
.card.bg-warning {
    background: linear-gradient(135deg, var(--primary-blue), var(--secondary-blue)) !important;
    border: none;
    color: white;
}

.card.bg-info {
    background: linear-gradient(135deg, #0ea5e9, #0284c7) !important;
}

.card.bg-success {
    background: linear-gradient(135deg, var(--success-green), #059669) !important;
}

.card.bg-warning {
    background: linear-gradient(135deg, var(--warning-orange), var(--accent-gold)) !important;
}

/* Footer Styling */
footer {
    margin-top: auto;
    border-top: 1px solid var(--border-gray);
}

/* Responsive Adjustments */
@media (max-width: 768px) {
    .calendar-grid {
        grid-template-columns: 1fr;
        gap: 10px;
        padding: 12px 0;
    }
    
    .calendar-block {
        padding: 10px;
        min-height: 100px;
    }
}

@media (min-width: 768px) and (max-width: 1024px) {
    .calendar-grid {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
        gap: 10px;
    }
}
    
    .table-responsive {
        font-size: 0.9rem;
    }
    
    .btn-group-sm .btn {
        padding: 0.25rem 0.5rem;
        font-size: 0.8rem;
    }
}

/* Loading States */
.loading {
    opacity: 0.6;
    pointer-events: none;
}

/* Professional Airline Color Scheme */
.text-airline-blue {
    color: var(--primary-blue) !important;
}

.bg-airline-blue {
    background-color: var(--primary-blue) !important;
}

.border-airline-blue {
    border-color: var(--primary-blue) !important;
}

/* Animation Classes */
.fade-in {
    animation: fadeIn 0.5s ease-in;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.slide-up {
    animation: slideUp 0.3s ease-out;
}

@keyframes slideUp {
    from { transform: translateY(10px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

/* Hover Effects for Interactive Elements */
.interactive-hover {
    transition: all 0.3s ease;
}

.interactive-hover:hover {
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
    /* Removed transform to prevent movement */
}

/* Status Indicator Dots */
.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    display: inline-block;
    margin-right: 8px;
}

.status-dot.available {
    background-color: var(--success-green);
}

.status-dot.unavailable {
    background-color: var(--danger-red);
}

.status-dot.pending {
    background-color: var(--warning-orange);
}