/* =====================================================
   GPS Management System - Estilos Modernos y Minimalistas
   ===================================================== */

:root {
    /* Colores principales - Paleta monocromática sofisticada */
    --color-primary: #0A0E27;
    --color-primary-light: #1A1F3A;
    --color-primary-dark: #050711;
    
    /* Colores de acento */
    --color-accent: #6366F1;
    --color-accent-light: #818CF8;
    --color-accent-dark: #4F46E5;
    
    /* Colores semánticos */
    --color-success: #10B981;
    --color-warning: #F59E0B;
    --color-error: #EF4444;
    --color-info: #3B82F6;
    
    /* Grises */
    --color-gray-50: #F9FAFB;
    --color-gray-100: #F3F4F6;
    --color-gray-200: #E5E7EB;
    --color-gray-300: #D1D5DB;
    --color-gray-400: #9CA3AF;
    --color-gray-500: #6B7280;
    --color-gray-600: #4B5563;
    --color-gray-700: #374151;
    --color-gray-800: #1F2937;
    --color-gray-900: #111827;
    
    /* Tipografía */
    --font-primary: 'Outfit', system-ui, -apple-system, sans-serif;
    --font-mono: 'JetBrains Mono', 'Courier New', monospace;
    
    /* Espaciado */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* Bordes */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    
    /* Sombras */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    /* Transiciones */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Layout */
    --sidebar-width: 280px;
}

/* ===== Reset y base ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-primary);
    font-size: 15px;
    line-height: 1.6;
    color: var(--color-gray-800);
    background: var(--color-gray-50);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ===== Página de Login ===== */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    position: relative;
    overflow: hidden;
}

.login-page::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.1) 0%, transparent 70%);
    animation: pulse 8s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 0.3; }
    50% { transform: scale(1.1); opacity: 0.5; }
}

.login-container {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: 440px;
    padding: var(--spacing-lg);
}

.login-decoration {
    position: absolute;
    top: -100px;
    left: -100px;
    opacity: 0.1;
    pointer-events: none;
}

.decoration-circle {
    width: 200px;
    height: 200px;
    border: 2px solid white;
    border-radius: 50%;
    animation: rotate 20s linear infinite;
}

.decoration-line {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 300px;
    height: 2px;
    background: white;
    transform: translate(-50%, -50%) rotate(45deg);
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.login-box {
    background: white;
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    box-shadow: var(--shadow-xl);
    animation: slideUp 0.5s ease-out;
}

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

.login-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.logo-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-dark) 100%);
    border-radius: var(--radius-lg);
    color: white;
    margin-bottom: var(--spacing-md);
}

.login-header h1 {
    font-size: 1.75rem;
    font-weight: 600;
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-xs);
}

.login-header p {
    color: var(--color-gray-500);
    font-size: 0.9rem;
}

.login-footer {
    margin-top: var(--spacing-lg);
    text-align: center;
}

.login-footer p {
    margin: var(--spacing-sm) 0;
}

.login-footer code {
    background: var(--color-gray-100);
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--color-accent);
}

/* ===== Sidebar ===== */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background: white;
    border-right: 1px solid var(--color-gray-200);
    display: flex;
    flex-direction: column;
    z-index: 100;
}

.sidebar-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--color-gray-200);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-gray-900);
}

.logo svg {
    color: var(--color-accent);
}

.sidebar-content {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-lg);
}

.nav-section {
    margin-bottom: var(--spacing-xl);
}

.nav-section-title {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-gray-400);
    margin-bottom: var(--spacing-sm);
    padding: 0 var(--spacing-sm);
}

.nav-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    color: var(--color-gray-600);
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    margin-bottom: var(--spacing-xs);
}

.nav-link:hover {
    background: var(--color-gray-100);
    color: var(--color-gray-900);
}

.nav-link.active {
    background: var(--color-accent);
    color: white;
}

.nav-link svg {
    flex-shrink: 0;
}

.sidebar-footer {
    padding: var(--spacing-lg);
    border-top: 1px solid var(--color-gray-200);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.user-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.user-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--color-accent);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 1rem;
}

.user-details {
    flex: 1;
}

.user-name {
    font-weight: 500;
    font-size: 0.9rem;
    color: var(--color-gray-900);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 140px;
}

.user-role {
    font-size: 0.75rem;
    color: var(--color-gray-500);
    text-transform: capitalize;
}

/* ===== Contenido Principal ===== */
.main-content {
    margin-left: var(--sidebar-width);
    padding: var(--spacing-xl);
    min-height: 100vh;
}

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-xl);
}

.page-header h1 {
    font-size: 2rem;
    font-weight: 600;
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-xs);
}

.header-actions {
    display: flex;
    gap: var(--spacing-md);
}

/* ===== Estadísticas ===== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.stat-card {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    transition: all var(--transition-base);
    border: 1px solid var(--color-gray-200);
}

.stat-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.stat-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.stat-icon-primary { background: rgba(99, 102, 241, 0.1); color: var(--color-accent); }
.stat-icon-success { background: rgba(16, 185, 129, 0.1); color: var(--color-success); }
.stat-icon-info { background: rgba(59, 130, 246, 0.1); color: var(--color-info); }
.stat-icon-warning { background: rgba(245, 158, 11, 0.1); color: var(--color-warning); }

.stat-content {
    flex: 1;
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-gray-900);
    line-height: 1;
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    font-size: 0.9rem;
    color: var(--color-gray-500);
}

/* ===== Cards ===== */
.card {
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    margin-bottom: var(--spacing-lg);
    border: 1px solid var(--color-gray-200);
}

.card-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--color-gray-200);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.card-header h2 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-gray-900);
}

.card-body {
    padding: var(--spacing-lg);
}

.content-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
    gap: var(--spacing-lg);
}

/* ===== Formularios ===== */
.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group label {
    display: block;
    font-weight: 500;
    color: var(--color-gray-700);
    margin-bottom: var(--spacing-sm);
    font-size: 0.9rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-md);
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-md);
    font-family: var(--font-primary);
    font-size: 0.95rem;
    transition: all var(--transition-base);
    background: white;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.form-group small {
    display: block;
    margin-top: var(--spacing-xs);
    font-size: 0.85rem;
    color: var(--color-gray-500);
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
}

.filter-form .form-row {
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
}

/* ===== Botones ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    border: none;
    border-radius: var(--radius-md);
    font-family: var(--font-primary);
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
    white-space: nowrap;
}

.btn-primary {
    background: var(--color-accent);
    color: white;
}

.btn-primary:hover {
    background: var(--color-accent-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-outline {
    background: transparent;
    color: var(--color-gray-700);
    border: 1px solid var(--color-gray-300);
}

.btn-outline:hover {
    background: var(--color-gray-100);
    border-color: var(--color-gray-400);
}

.btn-sm {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 0.875rem;
}

.btn-block {
    width: 100%;
    justify-content: center;
}

.btn-icon {
    padding: var(--spacing-md);
}

.btn-group {
    display: flex;
    gap: var(--spacing-xs);
}

/* ===== Tablas ===== */
.table-responsive {
    overflow-x: auto;
}

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

.table thead th {
    text-align: left;
    padding: var(--spacing-md);
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--color-gray-600);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-bottom: 2px solid var(--color-gray-200);
}

.table tbody td {
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--color-gray-200);
    font-size: 0.95rem;
}

.table tbody tr:hover {
    background: var(--color-gray-50);
}

/* ===== Badges ===== */
.badge {
    display: inline-flex;
    align-items: center;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    white-space: nowrap;
}

.badge-primary { background: rgba(99, 102, 241, 0.1); color: var(--color-accent-dark); }
.badge-success { background: rgba(16, 185, 129, 0.1); color: #059669; }
.badge-warning { background: rgba(245, 158, 11, 0.1); color: #D97706; }
.badge-error { background: rgba(239, 68, 68, 0.1); color: #DC2626; }
.badge-danger { background: rgba(239, 68, 68, 0.1); color: #DC2626; }
.badge-info { background: rgba(59, 130, 246, 0.1); color: #2563EB; }
.badge-secondary { background: var(--color-gray-200); color: var(--color-gray-700); }

.badge-outline-primary {
    background: transparent;
    color: var(--color-accent);
    border: 1px solid var(--color-accent);
}

/* ===== Alertas ===== */
.alert {
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.alert-success { background: rgba(16, 185, 129, 0.1); color: #059669; border-left: 4px solid var(--color-success); }
.alert-error { background: rgba(239, 68, 68, 0.1); color: #DC2626; border-left: 4px solid var(--color-error); }
.alert-warning { background: rgba(245, 158, 11, 0.1); color: #D97706; border-left: 4px solid var(--color-warning); }
.alert-info { background: rgba(59, 130, 246, 0.1); color: #2563EB; border-left: 4px solid var(--color-info); }

/* ===== Modales ===== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(4px);
    animation: fadeIn var(--transition-base);
}

.modal.active {
    display: flex;
}

.modal-content {
    background: white;
    border-radius: var(--radius-lg);
    width: 90%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-xl);
    animation: slideUp var(--transition-slow);
}

.modal-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--color-gray-200);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h2 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-gray-900);
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--color-gray-400);
    cursor: pointer;
    transition: color var(--transition-base);
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
}

.modal-close:hover {
    color: var(--color-gray-900);
    background: var(--color-gray-100);
}

.modal-body {
    padding: var(--spacing-lg);
}

.modal-footer {
    padding: var(--spacing-lg);
    border-top: 1px solid var(--color-gray-200);
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-md);
}

/* ===== Listas ===== */
.list-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.list-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    transition: background var(--transition-base);
}

.list-item:hover {
    background: var(--color-gray-50);
}

.list-item-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    background: rgba(99, 102, 241, 0.1);
    color: var(--color-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.list-item-content {
    flex: 1;
}

.list-item-title {
    font-weight: 500;
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-xs);
}

.list-item-subtitle {
    font-size: 0.85rem;
    color: var(--color-gray-500);
}

.list-item-meta {
    flex-shrink: 0;
}

/* ===== Estados vacíos ===== */
.empty-state {
    text-align: center;
    padding: var(--spacing-2xl);
    color: var(--color-gray-400);
}

.empty-state svg {
    margin-bottom: var(--spacing-md);
}

.empty-state p {
    font-size: 0.95rem;
}

/* ===== Utilidades ===== */
.text-muted {
    color: var(--color-gray-500);
}

.text-small {
    font-size: 0.85rem;
}

.text-center {
    text-align: center;
}

code {
    font-family: var(--font-mono);
    font-size: 0.9em;
    padding: 2px 6px;
    background: var(--color-gray-100);
    border-radius: var(--radius-sm);
    color: var(--color-accent);
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
    :root {
        --sidebar-width: 0;
    }
    
    .sidebar {
        transform: translateX(-100%);
        transition: transform var(--transition-slow);
    }
    
    .sidebar.active {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
        padding: var(--spacing-md);
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .content-grid {
        grid-template-columns: 1fr;
    }
    
    .page-header {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .header-actions {
        width: 100%;
    }
    
    .header-actions .btn {
        flex: 1;
    }
}