/* ========================================
   Ruta Tepeximilpa - Sistema de Monitoreo
   Estilos Globales (Responsive)
   ======================================== */

:root {
    --primary: #1e3a5f;
    --primary-light: #2d5a87;
    --primary-dark: #0f2744;
    --accent: #f59e0b;
    --accent-hover: #d97706;
    --success: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    --sidebar-width: 260px;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1);
    --radius: 12px;
    --radius-sm: 8px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--gray-100);
    color: var(--gray-800);
    display: flex;
    min-height: 100vh;
    overflow-x: hidden;
}

/* ========================================
   Sidebar Navigation
   ======================================== */

.sidebar {
    width: var(--sidebar-width);
    background: linear-gradient(180deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    z-index: 1000;
    transition: var(--transition);
    box-shadow: var(--shadow-lg);
}

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }
    .sidebar.active {
        transform: translateX(0);
    }
}

.sidebar-header {
    padding: 25px 20px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    white-space: nowrap;
}

.sidebar-header .logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.4em;
    font-weight: 700;
}

.sidebar-header .logo i {
    font-size: 1.3em;
    color: var(--accent);
}

.sidebar-header small {
    display: block;
    margin-top: 5px;
    font-size: 0.75em;
    color: rgba(255,255,255,0.6);
    letter-spacing: 0.5px;
}

.nav-menu {
    list-style: none;
    padding: 20px 0;
    flex: 1;
}

.nav-menu li a {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px 25px;
    color: rgba(255,255,255,0.8);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    border-left: 4px solid transparent;
}

.nav-menu li a:hover {
    background: rgba(255,255,255,0.1);
    color: white;
}

.nav-menu li.active a {
    background: rgba(255,255,255,0.15);
    color: white;
    border-left-color: var(--accent);
}

.nav-menu li a i {
    font-size: 1.1em;
    width: 22px;
    text-align: center;
}

.nav-menu .badge {
    margin-left: auto;
    background: var(--danger);
    color: white;
    font-size: 0.7em;
    padding: 3px 8px;
    border-radius: 10px;
    font-weight: 600;
}

.sidebar-footer {
    padding: 20px;
    border-top: 1px solid rgba(255,255,255,0.1);
    font-size: 0.85em;
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 5px;
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--gray-400);
}

.status-dot.online {
    background: var(--success);
    box-shadow: 0 0 8px var(--success);
}

/* ========================================
   Main Content Area
   ======================================== */

.main-content {
    margin-left: var(--sidebar-width);
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    width: calc(100% - var(--sidebar-width));
    transition: var(--transition);
}

@media (max-width: 768px) {
    .main-content {
        margin-left: 0;
        width: 100%;
    }
}

/* ========================================
   Page Header (Top Bar)
   ======================================== */

.page-header {
    background: white;
    padding: 15px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 50;
}

@media (min-width: 769px) {
    .page-header {
        padding: 20px 30px;
    }
}

.header-left {
    display: flex;
    align-items: center;
    gap: 15px;
}

.btn-hamburger {
    display: none;
    background: transparent;
    border: none;
    font-size: 1.4em;
    color: var(--primary);
    cursor: pointer;
    padding: 5px;
}

@media (max-width: 768px) {
    .btn-hamburger {
        display: block;
    }
    .page-header h1 {
        font-size: 1.2em;
    }
}

.page-header h1 {
    font-size: 1.5em;
    font-weight: 600;
    color: var(--gray-800);
    margin: 0;
    display: flex;
    align-items: center;
}

.page-header h1 i {
    color: var(--primary);
    margin-right: 10px;
}

.header-actions {
    display: flex;
    gap: 10px;
}

@media (max-width: 480px) {
    .header-actions {
        gap: 5px;
    }
    .btn-text {
        display: none; /* Solo iconos en pantallas muy pequeñas */
    }
}

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

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    border: none;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 0.9em;
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
    white-space: nowrap;
}

.btn-sm {
    padding: 6px 12px;
    font-size: 0.8em;
}

.btn-primary { background: var(--primary); color: white; }
.btn-primary:hover { background: var(--primary-light); transform: translateY(-1px); }

.btn-accent { background: var(--accent); color: var(--gray-900); }
.btn-accent:hover { background: var(--accent-hover); transform: translateY(-1px); }

.btn-outline { background: transparent; border: 2px solid var(--gray-300); color: var(--gray-700); }
.btn-outline:hover { border-color: var(--primary); color: var(--primary); }

/* ========================================
   Stats Cards (Responsive Grid)
   ======================================== */

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
    padding: 25px 30px;
}

@media (max-width: 768px) {
    .stats-grid {
        grid-template-columns: repeat(2, 1fr); /* 2 columnas en tablets/móviles */
        padding: 15px;
        gap: 10px;
    }
}

@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: 1fr; /* 1 columna en móviles muy pequeños */
    }
}

.stat-card {
    background: white;
    border-radius: var(--radius);
    padding: 20px;
    box-shadow: var(--shadow-md);
    display: flex;
    align-items: center;
    gap: 15px;
    transition: var(--transition);
}

@media (min-width: 769px) {
    .stat-card {
        flex-direction: column;
        align-items: flex-start;
        padding: 25px;
        gap: 20px;
    }
}

.stat-icon {
    width: 50px;
    height: 50px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3em;
    flex-shrink: 0;
}

.stat-icon.blue { background: #dbeafe; color: #2563eb; }
.stat-icon.green { background: #d1fae5; color: #059669; }
.stat-icon.yellow { background: #fef3c7; color: #d97706; }
.stat-icon.red { background: #fee2e2; color: #dc2626; }

.stat-info h3 { font-size: 1.8em; font-weight: 700; color: var(--gray-800); line-height: 1; }
.stat-info p { color: var(--gray-500); font-size: 0.85em; margin-top: 5px; }

@media (min-width: 769px) {
    .stat-info h3 { font-size: 2em; }
}

/* ========================================
   Grid Layouts (Dashboard/Routes)
   ======================================== */

.content-grid {
    display: grid;
    grid-template-columns: 1fr 380px;
    gap: 25px;
    padding: 0 30px 30px;
    flex: 1;
}

@media (max-width: 1200px) {
    .content-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    .content-grid { padding: 15px; gap: 15px; }
}

.map-container {
    background: white;
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    position: relative;
}

.map-container .map-header {
    padding: 12px 15px;
    border-bottom: 1px solid var(--gray-200);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.map-container .map-header h3 {
    font-size: 0.95em;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
}

#map {
    height: 500px;
    width: 100%;
}

@media (max-width: 768px) {
    #map { height: 350px; }
}

/* Status Live Indicator */
.status-live {
    font-size: 0.75em;
    font-weight: 700;
    color: var(--success);
    display: flex;
    align-items: center;
    gap: 5px;
}

.live-dot {
    width: 8px;
    height: 8px;
    background: var(--success);
    border-radius: 50%;
    display: inline-block;
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.4; transform: scale(1.2); }
    100% { opacity: 1; transform: scale(1); }
}

/* ========================================
   Units Panel
   ======================================== */

.units-panel {
    background: white;
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
    display: flex;
    flex-direction: column;
    max-height: calc(100vh - 250px);
}

@media (max-width: 1200px) {
    .units-panel { max-height: none; }
}

.panel-header {
    padding: 15px 20px;
    border-bottom: 1px solid var(--gray-200);
    display: flex;
    justify-content: space-between;
    align--items: center;
}

.panel-header h3 {
    font-size: 1em;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
}

.unit-list {
    padding: 15px;
    overflow-y: auto;
    flex: 1;
}

.unit-card {
    background: var(--gray-50);
    border-radius: var(--radius-sm);
    padding: 12px;
    margin-bottom: 10px;
    border-left: 4px solid var(--success);
    transition: var(--transition);
    cursor: pointer;
}

.unit-card:hover { background: var(--gray-100); transform: translateX(3px); }
.unit-card.off-route { border-left-color: var(--danger); background: #fef2f2; }

.unit-card .unit-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 8px; }
.unit-card .plate { font-weight: 700; font-size: 1em; color: var(--gray-800); }
.unit-card .status-badge { font-size: 0.65em; padding: 3px 8px; border-radius: 10px; font-weight: 600; text-transform: uppercase; }
.unit-card .status-badge.safe { background: #d1fae5; color: #059669; }
.unit-card .status-badge.danger { background: #fee2e2; color: #dc2626; }

.unit-card .unit-details { font-size: 0.8em; color: var(--gray-600); }
.unit-card .unit-details p { margin: 2px 0; display: flex; align-items: center; gap: 6px; }
.unit-card .unit-details i { width: 14px; color: var(--gray-400); }

/* ========================================
   Tables (Responsive)
   ======================================== */

.table-responsive {
    width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    background: white;
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
    margin-bottom: 30px;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 600px;
}

.data-table th,
.data-table td { padding: 15px 20px; text-align: left; }

.data-table th {
    background: var(--gray-50);
    font-weight: 600;
    font-size: 0.85em;
    color: var(--gray-600);
    text-transform: uppercase;
}

.data-table td { border-top: 1px solid var(--gray-200); }

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

.alert-item {
    background: white;
    border-radius: var(--radius);
    padding: 15px;
    margin-bottom: 12px;
    box-shadow: var(--shadow-md);
    border-left: 4px solid var(--danger);
    display: flex;
    gap: 12px;
    align-items: flex-start;
}

@media (max-width: 480px) {
    .alert-item { flex-direction: column; gap: 10px; }
}

.alert-item .alert-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: #fee2e2;
    color: var(--danger);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1em;
    flex-shrink: 0;
}

.alert-item .alert-content { flex: 1; }
.alert-item .alert-title { font-weight: 600; font-size: 0.95em; margin-bottom: 4px; color: var(--gray-800); }
.alert-item .alert-desc { font-size: 0.85em; color: var(--gray-600); margin-bottom: 6px; }
.alert-item .alert-time { font-size: 0.75em; color: var(--gray-400); }

/* ========================================
   Routes Module
   ======================================== */

.route-card {
    background: white;
    border-radius: var(--radius);
    padding: 15px;
    margin-bottom: 12px;
    box-shadow: var(--shadow-md);
    display: flex;
    gap: 15px;
}

@media (max-width: 768px) {
    .route-card { flex-direction: column; }
    .route-card .route-color { width: 100%; height: 6px; }
}

.route-card .route-color { width: 6px; border-radius: 3px; flex-shrink: 0; }
.route-card .route-info { flex: 1; }
.route-card .route-name { font-weight: 600; font-size: 1em; margin-bottom: 6px; }

.route-card .route-stops {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
    margin-top: 8px;
}

.route-card .stop-tag {
    background: var(--gray-100);
    padding: 3px 8px;
    border-radius: 12px;
    font-size: 0.75em;
    color: var(--gray-600);
}

/* ========================================
   Sidebar Overlay
   ======================================== */

.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 999;
}

.sidebar-overlay.active {
    display: block;
}

/* ========================================
   Utilities
   ======================================== */

.page-content { padding: 20px; }
@media (min-width: 769px) { .page-content { padding: 25px 30px; } }

.section-title {
    font-size: 1.1em;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--gray-800);
    display: flex;
    align-items: center;
    gap: 10px;
}

.section-title i { color: var(--primary); }

.empty-state {
    text-align: center;
    padding: 40px 20px;
    color: var(--gray-500);
}

.empty-state i { font-size: 2.5em; margin-bottom: 10px; color: var(--gray-300); }