:root {
    /* Colores principales - Tema oscuro premium */
    --bg-primary: #0a0e1a;
    --bg-secondary: #131825;
    --bg-tertiary: #1a1f33;
    --bg-glass: rgba(255, 255, 255, 0.05);

    /* Acentos vibrantes */
    --accent-primary: #6366f1;
    --accent-secondary: #a855f7;
    --accent-success: #10b981;
    --accent-warning: #f59e0b;
    --accent-danger: #ef4444;
    --accent-info: #3b82f6;

    /* Gradientes */
    --gradient-primary: linear-gradient(135deg, #6366f1 0%, #a855f7 100%);
    --gradient-success: linear-gradient(135deg, #10b981 0%, #059669 100%);
    --gradient-warning: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
    --gradient-danger: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);

    /* Texto */
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-tertiary: #94a3b8;

    /* Bordes */
    --border-color: rgba(255, 255, 255, 0.1);
    --border-radius: 12px;
    --border-radius-sm: 8px;
    --border-radius-lg: 16px;

    /* Sombras */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 20px rgba(99, 102, 241, 0.3);

    /* Tipografía */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

    /* Espaciado */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
}

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

body {
    font-family: var(--font-family);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    padding-top: 70px;
    /* Espacio para navbar fixed */
    font-size: 16px;
    /* Base size para móvil */
}

/* Tipografía */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
}

h1 {
    font-size: 2.5rem;
}

h2 {
    font-size: 2rem;
}

h3 {
    font-size: 1.5rem;
}

h4 {
    font-size: 1.25rem;
}

p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
}

/* Contenedor principal */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-lg);
    width: 100%;
}

/* Navbar */
.navbar {
    background: rgba(19, 24, 37, 0.95);
    border-bottom: 1px solid var(--border-color);
    padding: 0.75rem var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    backdrop-filter: blur(10px);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    width: 100%;
    transition: all 0.3s ease;
}

.navbar-brand {
    font-size: 1.25rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    color: var(--text-primary);
    text-decoration: none;
    white-space: nowrap;
}

.navbar-nav {
    display: flex;
    gap: var(--spacing-sm);
    align-items: center;
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius-sm);
    transition: all 0.3s ease;
    font-size: 0.95rem;
    white-space: nowrap;
}

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

.nav-link.active {
    color: white;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
}

/* Botones */
.btn {
    padding: 0.6rem 1.2rem;
    border: none;
    border-radius: var(--border-radius-sm);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.95rem;
    gap: 0.5rem;
    line-height: 1;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md), var(--shadow-glow);
}

.btn-success {
    background: var(--gradient-success);
    color: white;
}

.btn-danger {
    background: var(--gradient-danger);
    color: white;
}

.btn-warning {
    background: var(--gradient-warning);
    color: white;
}

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

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

.btn-sm {
    padding: 0.4rem 0.8rem;
    font-size: 0.85rem;
}

/* Tarjetas */
.card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.card:hover {
    border-color: rgba(99, 102, 241, 0.3);
    box-shadow: var(--shadow-lg);
}

.card-header {
    border-bottom: 1px solid var(--border-color);
    padding-bottom: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.card-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0;
}

/* Grid de estadísticas */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.stat-card {
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    border-left: 4px solid var(--accent-primary);
    box-shadow: var(--shadow-md);
}

.stat-label {
    font-size: 0.8rem;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 0.5rem;
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-card.success .stat-value {
    background: var(--gradient-success);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.stat-card.warning .stat-value {
    background: var(--gradient-warning);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.stat-card.info .stat-value {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

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

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.form-control {
    width: 100%;
    padding: 0.75rem;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    color: var(--text-primary);
    font-size: 1rem;
    transition: all 0.3s ease;
    -webkit-appearance: none;
    /* Mejor estilo en iOS */
}

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

/* Tablas */
.table-container {
    width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    margin-bottom: var(--spacing-xs);
    border-radius: var(--border-radius);
    background: var(--bg-secondary);
}

table {
    width: 100%;
    border-collapse: collapse;
    min-width: 600px;
    /* Asegura scroll en móviles */
}

th,
td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

th {
    background: var(--bg-tertiary);
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.9rem;
    white-space: nowrap;
}

td {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

tr:last-child td {
    border-bottom: none;
}

tr:hover {
    background: var(--bg-glass);
}

/* Badges */
.badge {
    padding: 0.25rem 0.75rem;
    border-radius: 999px;
    font-size: 0.8rem;
    font-weight: 600;
    display: inline-block;
    white-space: nowrap;
}

.badge-info {
    background: rgba(59, 130, 246, 0.2);
    color: #60a5fa;
    border: 1px solid rgba(59, 130, 246, 0.3);
}

.badge-success {
    background: rgba(16, 185, 129, 0.2);
    color: #34d399;
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.badge-warning {
    background: rgba(245, 158, 11, 0.2);
    color: #fbbf24;
    border: 1px solid rgba(245, 158, 11, 0.3);
}

.badge-danger {
    background: rgba(239, 68, 68, 0.2);
    color: #f87171;
    border: 1px solid rgba(239, 68, 68, 0.3);
}

/* Utilidades Layout */
.flex {
    display: flex;
}

.flex-col {
    flex-direction: column;
}

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

.justify-between {
    justify-content: space-between;
}

.gap-xs {
    gap: 0.5rem;
}

.gap-sm {
    gap: 1rem;
}

.gap-md {
    gap: 1.5rem;
}

.flex-between {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

/* MOBILE FIRST: Ajustes de Responsividad */
@media (max-width: 992px) {

    /* En tablets apilamos las columnas principales del dashboard */
    .grid-2-cols,
    div[style*="grid-template-columns: 2fr 1fr"],
    div[style*="grid-template-columns: 1fr 1fr"] {
        grid-template-columns: 1fr !important;
    }
}

@media (max-width: 768px) {

    /* Navbar móvil */
    .navbar {
        padding: 0.75rem 1rem;
        flex-direction: column;
        align-items: stretch;
        gap: 1rem;
    }

    .navbar-brand {
        justify-content: center;
        margin-bottom: 0.5rem;
    }

    /* Scroll horizontal para menú */
    .navbar-nav {
        flex-direction: row;
        overflow-x: auto;
        padding-bottom: 5px;
        -webkit-overflow-scrolling: touch;
        justify-content: flex-start;
        width: 100%;
    }

    .navbar-nav::-webkit-scrollbar {
        height: 0px;
        background: transparent;
    }

    .nav-link {
        padding: 0.5rem 0.8rem;
        font-size: 0.9rem;
        background: var(--bg-tertiary);
        border: 1px solid var(--border-color);
    }

    body {
        padding-top: 130px;
        /* Más espacio para navbar de dos filas */
    }

    /* Fuentes más pequeñas en móvil */
    h1 {
        font-size: 1.75rem;
    }

    h2 {
        font-size: 1.5rem;
    }

    h3 {
        font-size: 1.25rem;
    }

    .container {
        padding: 1rem;
    }

    /* Ajustes de tarjetas */
    .card {
        padding: 1rem;
    }

    /* Ajustes flex */
    .flex-between {
        flex-direction: column;
        align-items: stretch;
    }

    .flex-between>div,
    .flex-between>form,
    .flex-between>a {
        width: 100%;
        margin-bottom: 0.5rem;
    }

    .flex-between form {
        display: flex;
        flex-direction: column;
    }

    .form-group {
        margin-bottom: 1rem !important;
    }

    .btn {
        width: 100%;
        /* Botones ancho completo en móvil para fácil pulsación */
    }

    /* Tablas responsivas */
    td,
    th {
        padding: 0.75rem 0.5rem;
    }

    /* Gráficos */
    canvas {
        min-height: 250px;
    }
}

/* Utilidades adicionales */
.text-center {
    text-align: center;
}

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

.w-full {
    width: 100%;
}

/* Dashboard Filter */
.dashboard-filter {
    display: flex;
    gap: var(--spacing-sm);
    align-items: flex-end;
}

.filter-inputs {
    display: flex;
    gap: var(--spacing-sm);
}

.dashboard-filter .form-group {
    margin-bottom: 0 !important;
}

@media (max-width: 768px) {
    .dashboard-filter {
        flex-direction: column;
        align-items: stretch;
    }

    .filter-inputs {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 0.5rem;
    }

    .dashboard-filter button {
        margin-top: 0.5rem;
    }
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(5px);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    max-width: 600px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
    animation: modalSlideIn 0.3s ease;
}

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

.modal-close {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 1.5rem;
    cursor: pointer;
    line-height: 1;
    padding: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all 0.2s ease;
}

.modal-close:hover {
    background: var(--bg-glass);
    color: var(--text-primary);
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }

    to {
        opacity: 1;
        transform: scale(1);
    }
}