/* Reset y 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;
}

* {
    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;
}

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;
}

.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: 500;
}

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

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

/* Navigation */
.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, 0.1);
    color: var(--primary);
}

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

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

/* Top Navigation */
.top-nav {
    background-color: var(--surface-light);
    border-bottom: 1px solid var(--border-light);
    padding: 0.75rem 2.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 10;
}

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

.nav-left {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.nav-left h2 {
    font-size: 1.125rem;
    font-weight: 700;
}

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

body.dark .current-time {
    color: var(--text-muted-dark);
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 1rem;
    position: relative;
}

/* Search Box */
.search-box {
    position: relative;
    display: flex;
    align-items: center;
    min-width: 16rem;
}

.search-icon {
    position: absolute;
    left: 0.75rem;
    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: 0.5rem 0.5rem 0.5rem 2.5rem;
    border-radius: 0.5rem;
    border: none;
    background-color: var(--bg-light);
    color: var(--text-light);
    font-size: 0.875rem;
    outline: none;
}

body.dark .search-box input {
    background-color: #1e293b;
    color: var(--text-dark);
}

.search-box input:focus {
    box-shadow: 0 0 0 2px rgba(19, 91, 236, 0.5);
}

/* Notification Button */
.notification-btn {
    position: relative;
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 50%;
    background-color: var(--bg-light);
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s;
}

body.dark .notification-btn {
    background-color: #1e293b;
}

.notification-btn:hover {
    background-color: var(--border-light);
}

body.dark .notification-btn:hover {
    background-color: #334155;
}

.notification-btn svg {
    width: 1.25rem;
    height: 1.25rem;
    color: var(--text-muted-light);
}

body.dark .notification-btn svg {
    color: var(--text-muted-dark);
}

.notification-badge {
    position: absolute;
    top: -4px;
    right: -4px;
    background-color: var(--danger);
    color: white;
    font-size: 0.625rem;
    font-weight: 700;
    width: 1.25rem;
    height: 1.25rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.notification-badge.hidden {
    display: none;
}

/* Notification Panel */
.notification-panel {
    position: absolute;
    top: 3.5rem;
    right: 0;
    width: 20rem;
    background-color: var(--surface-light);
    border: 1px solid var(--border-light);
    border-radius: 0.75rem;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    display: none;
    flex-direction: column;
    max-height: 24rem;
    z-index: 50;
}

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

.notification-panel.show {
    display: flex;
}

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

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

.notification-header h3 {
    font-size: 0.875rem;
    font-weight: 600;
}

.mark-all-read {
    font-size: 0.75rem;
    color: var(--primary);
    background: none;
    border: none;
    cursor: pointer;
}

.notification-list {
    overflow-y: auto;
    max-height: 20rem;
}

.notification-item {
    padding: 1rem;
    border-bottom: 1px solid var(--border-light);
    cursor: pointer;
    transition: background-color 0.2s;
}

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

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

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

.notification-item.unread {
    background-color: rgba(19, 91, 236, 0.05);
}

.notification-item p {
    font-size: 0.875rem;
    margin-bottom: 0.25rem;
}

.notification-item span {
    font-size: 0.75rem;
    color: var(--text-muted-light);
}

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

/* User Avatar */
.user-avatar {
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), #7c3aed);
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    padding: 1.5rem 2.5rem;
}

.stat-card {
    background-color: var(--surface-light);
    border: 1px solid var(--border-light);
    border-radius: 0.75rem;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

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

.stat-card.warning {
    background-color: rgba(255, 193, 7, 0.1);
    border-color: rgba(255, 193, 7, 0.3);
}

.stat-card.danger {
    background-color: rgba(220, 53, 69, 0.1);
    border-color: rgba(220, 53, 69, 0.3);
}

.stat-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.stat-title {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-muted-light);
}

body.dark .stat-title {
    color: var(--text-muted-dark);
}

.stat-card.warning .stat-title {
    color: #b8860b;
}

.stat-card.danger .stat-title {
    color: #c82333;
}

.stat-footer {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
}

.stat-value {
    font-size: 2.25rem;
    font-weight: 700;
}

.stat-card.warning .stat-value {
    color: #d39e00;
}

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

.stat-trend {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.875rem;
    font-weight: 500;
}

.stat-trend.positive {
    color: var(--success);
}

.stat-trend.negative {
    color: var(--danger);
}

/* Flights Section */
.flights-section {
    padding: 2.5rem;
}

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

.section-header h3 {
    font-size: 1.125rem;
    font-weight: 600;
}

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

body.dark .flight-count {
    color: var(--text-muted-dark);
}

/* 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: 0.75rem 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);
}

.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;
}

/* Occupancy Bar */
.occupancy-bar {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.occupancy-progress {
    width: 6rem;
    height: 0.5rem;
    background-color: var(--border-light);
    border-radius: 9999px;
    overflow: hidden;
}

body.dark .occupancy-progress {
    background-color: var(--border-dark);
}

.occupancy-fill {
    height: 100%;
    background-color: var(--primary);
    border-radius: 9999px;
    transition: width 0.3s;
}

.occupancy-text {
    font-size: 0.75rem;
    color: var(--text-muted-light);
}

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

/* Status Badge */
.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.on-time {
    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);
}

/* Action Button */
.action-btn {
    color: var(--primary);
    background: none;
    border: none;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: opacity 0.2s;
}

.action-btn:hover {
    opacity: 0.8;
}

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

    .stats-grid {
        grid-template-columns: 1fr;
    }

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