/* AERIS Dashboard - Layout */

/* ==================== APP SHELL ==================== */
.app {
    display: flex;
    min-height: 100vh;
}

.app-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    margin-left: var(--sidebar-width);
    transition: margin-left var(--transition-normal);
}

.app.sidebar-collapsed .app-content {
    margin-left: var(--sidebar-collapsed);
}

/* ==================== SIDEBAR ==================== */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background: linear-gradient(180deg, var(--navy-light) 0%, var(--navy) 100%);
    border-right: 1px solid var(--border-default);
    display: flex;
    flex-direction: column;
    z-index: var(--z-sticky);
    transition: width var(--transition-normal);
}

.app.sidebar-collapsed .sidebar {
    width: var(--sidebar-collapsed);
}

/* Sidebar Header */
.sidebar-header {
    padding: var(--space-5);
    border-bottom: 1px solid var(--border-default);
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.sidebar-logo {
    width: 42px;
    height: 42px;
    flex-shrink: 0;
}

.sidebar-brand {
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transition: opacity var(--transition-fast);
}

.app.sidebar-collapsed .sidebar-brand {
    opacity: 0;
    width: 0;
}

.sidebar-brand-name {
    font-size: var(--text-xl);
    font-weight: 700;
    letter-spacing: 0.15em;
    color: var(--white);
}

.sidebar-brand-tagline {
    font-size: var(--text-xs);
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: var(--tracking-wide);
}

/* Sidebar Navigation */
.sidebar-nav {
    flex: 1;
    padding: var(--space-4);
    overflow-y: auto;
}

.nav-section {
    margin-bottom: var(--space-6);
}

.nav-section-title {
    font-size: var(--text-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: var(--tracking-wider);
    color: var(--text-muted);
    padding: var(--space-2) var(--space-3);
    margin-bottom: var(--space-2);
    white-space: nowrap;
    overflow: hidden;
}

.app.sidebar-collapsed .nav-section-title {
    opacity: 0;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    text-decoration: none;
    transition: all var(--transition-fast);
    margin-bottom: var(--space-1);
    cursor: pointer;
}

.nav-item:hover {
    background: var(--bg-card);
    color: var(--text-primary);
}

.nav-item.active {
    background: var(--red-glow);
    color: var(--red-light);
}

.nav-item.active .nav-icon {
    color: var(--red);
}

.nav-icon {
    width: 22px;
    height: 22px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.nav-icon svg {
    width: 20px;
    height: 20px;
}

.nav-label {
    font-size: var(--text-sm);
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    transition: opacity var(--transition-fast);
}

.app.sidebar-collapsed .nav-label {
    opacity: 0;
    width: 0;
}

.nav-badge {
    margin-left: auto;
    padding: var(--space-1) var(--space-2);
    font-size: var(--text-xs);
    font-weight: 600;
    background: var(--red);
    color: var(--white);
    border-radius: var(--radius-full);
    min-width: 20px;
    text-align: center;
}

.app.sidebar-collapsed .nav-badge {
    display: none;
}

/* Sidebar Footer */
.sidebar-footer {
    padding: var(--space-4);
    border-top: 1px solid var(--border-default);
}

.sidebar-toggle {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3);
    background: var(--bg-card);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.sidebar-toggle:hover {
    background: var(--bg-card-hover);
    color: var(--text-primary);
}

.sidebar-toggle svg {
    transition: transform var(--transition-normal);
}

.app.sidebar-collapsed .sidebar-toggle svg {
    transform: rotate(180deg);
}

.app.sidebar-collapsed .sidebar-toggle span {
    display: none;
}

/* ==================== HEADER ==================== */
.header {
    height: var(--header-height);
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-default);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--space-6);
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
}

.header-left {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.header-title {
    font-size: var(--text-lg);
    font-weight: 600;
}

.header-breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--text-sm);
    color: var(--text-muted);
}

.header-breadcrumb a {
    color: var(--text-muted);
}

.header-breadcrumb a:hover {
    color: var(--text-primary);
}

.header-breadcrumb .separator {
    color: var(--text-muted);
}

.header-right {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

/* Header Airport Selector */
.airport-selector {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    background: var(--bg-card);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.airport-selector:hover {
    border-color: var(--border-hover);
}

.airport-code {
    font-size: var(--text-lg);
    font-weight: 700;
    color: var(--gold);
}

.airport-name {
    font-size: var(--text-sm);
    color: var(--text-secondary);
}

/* Header Date Picker */
.date-picker {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    background: var(--bg-card);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.date-picker:hover {
    border-color: var(--border-hover);
}

.date-picker-icon {
    color: var(--text-muted);
}

.date-picker-value {
    font-size: var(--text-sm);
    font-weight: 500;
}

/* Header Actions */
.header-actions {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.header-notification {
    position: relative;
}

.header-notification .notification-dot {
    position: absolute;
    top: -2px;
    right: -2px;
    width: 10px;
    height: 10px;
    background: var(--red);
    border-radius: 50%;
    border: 2px solid var(--bg-secondary);
}

/* ==================== MAIN CONTENT ==================== */
.main {
    flex: 1;
    padding: var(--space-6);
    background: var(--bg-primary);
    overflow-y: auto;
}

.main-container {
    max-width: var(--content-max-width);
    margin: 0 auto;
}

/* Page Header */
.page-header {
    margin-bottom: var(--space-6);
}

.page-title {
    font-size: var(--text-2xl);
    font-weight: 700;
    margin-bottom: var(--space-2);
}

.page-subtitle {
    font-size: var(--text-base);
    color: var(--text-muted);
}

/* Section */
.section {
    margin-bottom: var(--space-8);
}

.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-4);
}

.section-title {
    font-size: var(--text-lg);
    font-weight: 600;
}

.section-action {
    font-size: var(--text-sm);
    color: var(--gold);
    cursor: pointer;
}

.section-action:hover {
    text-decoration: underline;
}

/* ==================== GRID LAYOUTS ==================== */
.kpi-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-4);
}

.chart-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-6);
}

.chart-grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-6);
}

/* Split Layout */
.split-layout {
    display: flex;
    gap: var(--space-6);
    height: calc(100vh - var(--header-height) - var(--space-12));
}

.split-layout-sidebar {
    width: 320px;
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
}

.split-layout-main {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.split-layout-panel {
    width: 380px;
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
}

/* ==================== RESPONSIVE ==================== */
@media (max-width: 1400px) {
    .kpi-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .chart-grid-3 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 1200px) {
    .split-layout {
        flex-direction: column;
        height: auto;
    }

    .split-layout-sidebar,
    .split-layout-panel {
        width: 100%;
    }
}

@media (max-width: 992px) {
    .chart-grid {
        grid-template-columns: 1fr;
    }

    .header-right .airport-selector .airport-name {
        display: none;
    }
}

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }

    .app.sidebar-open .sidebar {
        transform: translateX(0);
    }

    .app-content {
        margin-left: 0;
    }

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

    .main {
        padding: var(--space-4);
    }

    .header {
        padding: 0 var(--space-4);
    }
}

/* Mobile Nav Toggle */
.mobile-nav-toggle {
    display: none;
}

@media (max-width: 768px) {
    .mobile-nav-toggle {
        display: flex;
    }
}

/* ==================== OVERLAY ==================== */
.overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    z-index: calc(var(--z-sticky) - 1);
}

.app.sidebar-open .overlay {
    opacity: 1;
    visibility: visible;
}

@media (min-width: 769px) {
    .overlay {
        display: none;
    }
}