/* Variables */
:root {
    --primary: #135bec;
    --bg-light: #f6f6f8;
    --bg-dark: #101622;
    --surface-light: #ffffff;
    --surface-dark: #1a1f2e;
    --text-light: #0d121b;
    --text-dark: #f8f9fc;
    --text-muted-light: #4c669a;
    --text-muted-dark: #a0b3d7;
    --border-light: #e2e8f0;
    --border-dark: #334155;
    --success: #28A745;
    --warning: #FFC107;
    --danger: #DC3545;
    --info: #17a2b8;
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-light);
    color: var(--text-light);
    transition: background-color 0.3s, color 0.3s;
}

body.dark {
    background-color: var(--bg-dark);
    color: var(--text-dark);
}

/* Container Layout */
.container {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: 256px;
    background-color: var(--surface-light);
    border-right: 1px solid var(--border-light);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 1rem;
    position: sticky;
    top: 0;
    height: 100vh;
    overflow-y: auto;
}

body.dark .sidebar {
    background-color: var(--surface-dark);
    border-color: var(--border-dark);
}

.sidebar-content {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.logo-section {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem;
}

.logo-icon {
    width: 40px;
    height: 40px;
    background-color: var(--primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
}

.logo-icon svg {
    width: 24px;
    height: 24px;
}

.logo-text h1 {
    font-size: 1rem;
    font-weight: 700;
}

.logo-text p {
    font-size: 0.875rem;
    color: var(--text-muted-light);
}

body.dark .logo-text p {
    color: var(--text-muted-dark);
}

.nav-menu {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.625rem 0.75rem;
    border-radius: 0.5rem;
    text-decoration: none;
    color: var(--text-muted-light);
    font-size: 0.875rem;
    font-weight: 500;
    transition: all 0.2s;
    cursor: pointer;
    border: none;
    background: none;
    width: 100%;
    text-align: left;
}

body.dark .nav-item {
    color: var(--text-muted-dark);
}

.nav-item:hover {
    background-color: rgba(19, 91, 236, 0.1);
}

.nav-item.active {
    background-color: rgba(19, 91, 236, 0.15);
    color: var(--primary);
    font-weight: 600;
}

.nav-icon {
    font-size: 1.25rem;
}

/* Main Content */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow-y: auto;
}

/* Page Header */
.page-header {
    background-color: var(--surface-light);
    border-bottom: 1px solid var(--border-light);
    padding: 2rem;
}

body.dark .page-header {
    background-color: var(--surface-dark);
    border-color: var(--border-dark);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 2rem;
    flex-wrap: wrap;
}

.header-text h1 {
    font-size: 1.875rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.header-text p {
    font-size: 1rem;
    color: var(--text-muted-light);
}

body.dark .header-text p {
    color: var(--text-muted-dark);
}

/* Buttons */
.btn-primary {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.625rem 1.5rem;
    background-color: var(--primary);
    color: white;
    border: none;
    border-radius: 0.5rem;
    font-size: 0.875rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.2s;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.btn-primary:hover {
    background-color: #0d4ac4;
    transform: translateY(-1px);
    box-shadow: 0 4px 6px rgba(19, 91, 236, 0.3);
}

.btn-secondary {
    padding: 0.625rem 1.5rem;
    background-color: var(--border-light);
    color: var(--text-light);
    border: none;
    border-radius: 0.5rem;
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

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

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

/* Filters Section */
.filters-section {
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.search-container {
    flex: 1;
}

.search-box {
    position: relative;
    display: flex;
    align-items: center;
    width: 100%;
}

.search-icon {
    position: absolute;
    left: 1rem;
    width: 1.25rem;
    height: 1.25rem;
    color: var(--text-muted-light);
}

body.dark .search-icon {
    color: var(--text-muted-dark);
}

.search-box input {
    width: 100%;
    padding: 0.75rem 1rem 0.75rem 3rem;
    border: 1px solid var(--border-light);
    border-radius: 0.5rem;
    background-color: var(--surface-light);
    color: var(--text-light);
    font-size: 0.875rem;
    outline: none;
    transition: all 0.2s;
}

body.dark .search-box input {
    border-color: var(--border-dark);
    background-color: var(--surface-dark);
    color: var(--text-dark);
}

.search-box input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(19, 91, 236, 0.1);
}

/* Filter Buttons */
.filter-buttons {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.filter-dropdown {
    position: relative;
}

.filter-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-light);
    border-radius: 0.5rem;
    background-color: var(--surface-light);
    color: var(--text-light);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

body.dark .filter-btn {
    border-color: var(--border-dark);
    background-color: var(--surface-dark);
    color: var(--text-dark);
}

.filter-btn:hover {
    background-color: var(--bg-light);
}

body.dark .filter-btn:hover {
    background-color: rgba(30, 41, 59, 0.5);
}

.filter-btn.active {
    border-color: var(--primary);
    background-color: rgba(19, 91, 236, 0.1);
    color: var(--primary);
}

.dropdown-icon {
    font-size: 0.75rem;
    transition: transform 0.2s;
}

.filter-btn.open .dropdown-icon {
    transform: rotate(180deg);
}

.dropdown-menu {
    position: absolute;
    top: calc(100% + 0.5rem);
    left: 0;
    min-width: 200px;
    background-color: var(--surface-light);
    border: 1px solid var(--border-light);
    border-radius: 0.5rem;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    display: none;
    flex-direction: column;
    z-index: 100;
    max-height: 300px;
    overflow-y: auto;
}

body.dark .dropdown-menu {
    background-color: var(--surface-dark);
    border-color: var(--border-dark);
}

.dropdown-menu.show {
    display: flex;
}

.dropdown-item {
    padding: 0.75rem 1rem;
    border: none;
    background: none;
    text-align: left;
    font-size: 0.875rem;
    color: var(--text-light);
    cursor: pointer;
    transition: all 0.2s;
}

body.dark .dropdown-item {
    color: var(--text-dark);
}

.dropdown-item:hover {
    background-color: var(--bg-light);
}

body.dark .dropdown-item:hover {
    background-color: rgba(30, 41, 59, 0.5);
}

.dropdown-item.active {
    background-color: rgba(19, 91, 236, 0.1);
    color: var(--primary);
    font-weight: 600;
}

.clear-filters-btn {
    padding: 0.75rem 1rem;
    border: 1px solid var(--danger);
    border-radius: 0.5rem;
    background-color: transparent;
    color: var(--danger);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

.clear-filters-btn:hover {
    background-color: rgba(220, 53, 69, 0.1);
}

/* Active Filters */
.active-filters {
    padding: 0 2rem;
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    min-height: 2rem;
}

.filter-tag {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.375rem 0.75rem;
    background-color: rgba(19, 91, 236, 0.1);
    color: var(--primary);
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 500;
}

.filter-tag-remove {
    cursor: pointer;
    font-weight: 700;
    font-size: 1rem;
    line-height: 1;
}

/* Table Section */
.table-section {
    padding: 0 2rem 2rem;
}

.table-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.results-info {
    font-size: 0.875rem;
    color: var(--text-muted-light);
}

body.dark .results-info {
    color: var(--text-muted-dark);
}

.view-controls {
    display: flex;
    gap: 0.5rem;
}

.view-btn {
    width: 2.5rem;
    height: 2.5rem;
    border: 1px solid var(--border-light);
    border-radius: 0.375rem;
    background-color: var(--surface-light);
    cursor: pointer;
    transition: all 0.2s;
}

body.dark .view-btn {
    border-color: var(--border-dark);
    background-color: var(--surface-dark);
}

.view-btn:hover {
    background-color: var(--bg-light);
}

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

/* Table */
.table-container {
    background-color: var(--surface-light);
    border: 1px solid var(--border-light);
    border-radius: 0.75rem;
    overflow: hidden;
}

body.dark .table-container {
    background-color: var(--surface-dark);
    border-color: var(--border-dark);
}

.flights-table {
    width: 100%;
    border-collapse: collapse;
}

.flights-table thead {
    background-color: var(--bg-light);
}

body.dark .flights-table thead {
    background-color: rgba(30, 41, 59, 0.5);
}

.flights-table th {
    padding: 1rem 1.5rem;
    text-align: left;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    color: var(--text-muted-light);
}

body.dark .flights-table th {
    color: var(--text-muted-dark);
}

.sort-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    border: none;
    background: none;
    color: inherit;
    font: inherit;
    cursor: pointer;
    padding: 0;
}

.sort-icon::after {
    content: '⇅';
    opacity: 0.3;
}

.sort-btn.asc .sort-icon::after {
    content: '↑';
    opacity: 1;
}

.sort-btn.desc .sort-icon::after {
    content: '↓';
    opacity: 1;
}

.flights-table tbody tr {
    border-top: 1px solid var(--border-light);
    transition: background-color 0.2s;
}

body.dark .flights-table tbody tr {
    border-color: var(--border-dark);
}

.flights-table tbody tr:hover {
    background-color: var(--bg-light);
}

body.dark .flights-table tbody tr:hover {
    background-color: rgba(30, 41, 59, 0.3);
}

.flights-table td {
    padding: 1rem 1.5rem;
    font-size: 0.875rem;
}

/* Status Badges */
.status-badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.625rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 500;
}

.status-badge.scheduled {
    background-color: rgba(19, 91, 236, 0.1);
    color: var(--primary);
}

.status-badge.in-route {
    background-color: rgba(40, 167, 69, 0.1);
    color: var(--success);
}

.status-badge.delayed {
    background-color: rgba(255, 193, 7, 0.1);
    color: #d39e00;
}

.status-badge.cancelled {
    background-color: rgba(220, 53, 69, 0.1);
    color: var(--danger);
}

.status-badge.completed {
    background-color: rgba(108, 117, 125, 0.1);
    color: #6c757d;
}

/* Action Buttons */
.action-btn {
    padding: 0.5rem;
    border: none;
    background: none;
    cursor: pointer;
    color: var(--primary);
    transition: all 0.2s;
    font-size: 1.25rem;
}

.action-btn:hover {
    opacity: 0.7;
    transform: scale(1.1);
}

/* Cards View */
.cards-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
}

.flight-card {
    background-color: var(--surface-light);
    border: 1px solid var(--border-light);
    border-radius: 0.75rem;
    padding: 1.5rem;
    transition: all 0.2s;
    cursor: pointer;
}

body.dark .flight-card {
    background-color: var(--surface-dark);
    border-color: var(--border-dark);
}

.flight-card:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    transform: translateY(-2px);
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-light);
}

body.dark .pagination {
    border-color: var(--border-dark);
}

.pagination-info {
    font-size: 0.875rem;
    color: var(--text-muted-light);
}

body.dark .pagination-info {
    color: var(--text-muted-dark);
}

.pagination-controls {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.pagination-btn {
    padding: 0.5rem 1rem;
    border: 1px solid var(--border-light);
    border-radius: 0.375rem;
    background-color: var(--surface-light);
    color: var(--text-light);
    font-size: 0.875rem;
    cursor: pointer;
    transition: all 0.2s;
}

body.dark .pagination-btn {
    border-color: var(--border-dark);
    background-color: var(--surface-dark);
    color: var(--text-dark);
}

.pagination-btn:hover:not(:disabled) {
    background-color: var(--primary);
    color: white;
    border-color: var(--primary);
}

.pagination-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.pagination-numbers {
    display: flex;
    gap: 0.25rem;
}

.page-number {
    width: 2.5rem;
    height: 2.5rem;
    border: 1px solid var(--border-light);
    border-radius: 0.375rem;
    background-color: var(--surface-light);
    color: var(--text-light);
    font-size: 0.875rem;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
}

body.dark .page-number {
    border-color: var(--border-dark);
    background-color: var(--surface-dark);
    color: var(--text-dark);
}

.page-number:hover {
    background-color: var(--bg-light);
}

.page-number.active {
    background-color: var(--primary);
    color: white;
    border-color: var(--primary);
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal.show {
    display: flex;
}

.modal-content {
    background-color: var(--surface-light);
    border-radius: 0.75rem;
    max-width: 600px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
}

body.dark .modal-content {
    background-color: var(--surface-dark);
}

.modal-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-light);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

body.dark .modal-header {
    border-color: var(--border-dark);
}

.modal-close {
    font-size: 1.5rem;
    border: none;
    background: none;
    cursor: pointer;
    color: var(--text-muted-light);
}

body.dark .modal-close {
    color: var(--text-muted-dark);
}

.modal-body {
    padding: 1.5rem;
}

.modal-footer {
    padding: 1.5rem;
    border-top: 1px solid var(--border-light);
    display: flex;
    justify-content: flex-end;
    gap: 1rem;
}

body.dark .modal-footer {
    border-color: var(--border-dark);
}

/* Utilities */
.hidden {
    display: none !important;
}

/* Responsive */
@media (max-width: 768px) {
    .sidebar {
        width: 200px;
    }

    .header-content {
        flex-direction: column;
    }

    .filters-section {
        gap: 1rem;
    }

    .filter-buttons {
        flex-direction: column;
    }

    .table-container {
        overflow-x: auto;
    }
}