/* ═══════════════════════════════════════════════════════════════════
   admin-styles.css — Hoja de Estilo para el Panel (Original Light)
   ═══════════════════════════════════════════════════════════════════ */

:root {
    --admin-bg-dark: #f3f4f6;       /* Fondo gris claro general */
    --admin-bg-panel: #ffffff;      /* Paneles y tarjetas blancas */
    --admin-bg-surface: #f9fafb;    /* Superficies internas */
    --admin-border: #e5e7eb;        /* Bordes claros */
    --admin-accent: #eab308;        /* Amarillo corporativo */
    --admin-text-main: #111827;     /* Texto principal oscuro */
    --admin-text-muted: #4b5563;    /* Texto secundario */
    --admin-success: #10b981;       /* Éxito */
    --admin-danger: #ef4444;        /* Error/Peligro */
}

body.admin-body {
    background-color: var(--admin-bg-dark);
    color: var(--admin-text-main);
    font-family: 'Montserrat', sans-serif;
    margin: 0;
    display: flex;
    min-height: 100vh;
}

/* ─── Sidebar de Navegación ─── */
.admin-sidebar {
    width: 260px;
    background-color: var(--admin-bg-panel);
    border-right: 1px solid var(--admin-border);
    display: flex;
    flex-direction: column;
    padding: 1.5rem 0;
}

.admin-sidebar-brand {
    padding: 0 1rem 1.5rem;
    font-size: 0.95rem;
    font-family: 'Montserrat', sans-serif;
    font-weight: 800;
    color: var(--admin-text-main);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    border-bottom: 1px solid var(--admin-border);
    margin-bottom: 1.5rem;
    text-transform: uppercase;
    white-space: nowrap;
}

.admin-sidebar-brand img {
    height: 26px;
    width: auto;
    object-fit: contain;
    flex-shrink: 0;
}

.admin-sidebar-brand span {
    color: var(--admin-accent);
}

.admin-nav {
    list-style: none;
    padding: 0;
    margin: 0;
}

.admin-nav-item a {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.85rem 1.5rem;
    color: var(--admin-text-muted);
    font-family: 'Montserrat', sans-serif;
    font-size: 0.85rem;
    font-weight: 700;
}

.admin-nav-item a:hover, .admin-nav-item.active a {
    color: var(--admin-text-main);
    background-color: var(--admin-bg-dark);
    border-radius: 6px;
    margin: 0 0.75rem;
    padding: 0.85rem 1.15rem;
}

.admin-nav-item.active a {
    color: var(--admin-text-main);
    font-weight: 800;
}

.admin-nav-item a i {
    width: 20px;
    font-size: 1.1rem;
    color: var(--admin-text-muted);
}

.admin-nav-item.active a i {
    color: var(--admin-accent);
}

/* ─── Contenido Principal ─── */
.admin-layout-main {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
}

.admin-topbar {
    height: 70px;
    background-color: var(--admin-bg-panel);
    border-bottom: 1px solid var(--admin-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 2rem;
}

.admin-topbar-title {
    font-size: 1.25rem;
    font-weight: 800;
    font-family: 'Montserrat', sans-serif;
}

.admin-topbar-user {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.admin-topbar-user span {
    font-size: 0.85rem;
    color: var(--admin-text-muted);
    font-weight: bold;
}

.admin-btn-logout {
    background: transparent;
    color: var(--admin-text-muted);
    font-size: 1.1rem;
    padding: 0.5rem;
    border-radius: 50%;
}
.admin-btn-logout:hover {
    color: var(--admin-danger);
    background: rgba(0, 0, 0, 0.05);
}

.admin-content-view {
    padding: 2rem;
    flex: 1;
}

/* ─── Tarjetas de Estadísticas ─── */
.admin-stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.admin-stat-card {
    background-color: var(--admin-bg-panel);
    border: 1px solid var(--admin-border);
    border-radius: 8px;
    padding: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
}

.admin-stat-info h3 {
    font-size: 0.75rem;
    color: var(--admin-text-muted);
    text-transform: uppercase;
    margin-bottom: 0.5rem;
    font-weight: bold;
}

.admin-stat-info p {
    font-size: 1.75rem;
    font-weight: 800;
}

.admin-stat-icon {
    font-size: 1.75rem;
    color: var(--admin-accent);
    background: rgba(234, 179, 8, 0.08);
    width: 50px;
    height: 50px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ─── Contenedor y Tablas de Datos ─── */
.admin-data-container {
    background-color: var(--admin-bg-panel);
    border: 1px solid var(--admin-border);
    border-radius: 8px;
    padding: 1.5rem;
    margin-bottom: 2rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
}

.admin-container-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.admin-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1rem;
}

.admin-table th, .admin-table td {
    padding: 0.9rem 1.25rem;
    text-align: left;
    border-bottom: 1px solid var(--admin-border);
}

.admin-table th {
    font-weight: 800;
    color: var(--admin-text-muted);
    font-size: 0.75rem;
    text-transform: uppercase;
    background-color: var(--admin-bg-surface);
}

.admin-table tbody tr:hover {
    background-color: var(--admin-bg-surface);
}

.admin-actions-cell {
    display: flex;
    gap: 0.5rem;
}

.admin-btn-action {
    background: transparent;
    color: var(--admin-text-muted);
    width: 32px;
    height: 32px;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--admin-border);
}
.admin-btn-action:hover {
    color: var(--admin-accent);
    border-color: var(--admin-accent);
    background-color: rgba(234, 179, 8, 0.05);
}
.admin-btn-action.delete-btn:hover {
    color: var(--admin-danger);
    border-color: var(--admin-danger);
    background-color: rgba(239, 68, 68, 0.05);
}

/* ─── Formularios y Modales ─── */
.admin-form-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    display: none;
    align-items: center;
    justify-content: center;
}

.admin-form-modal.open {
    display: flex;
}

.admin-modal-content {
    background-color: var(--admin-bg-panel);
    border: 1px solid var(--admin-border);
    width: 90%;
    max-width: 800px;
    border-radius: 8px;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

.admin-modal-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--admin-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.admin-modal-body {
    padding: 1.5rem;
    overflow-y: auto;
    flex: 1;
}

.admin-modal-footer {
    padding: 1.25rem 1.5rem;
    border-top: 1px solid var(--admin-border);
    display: flex;
    justify-content: flex-end;
    gap: 1rem;
}

/* Sistema de Pestañas */
.admin-tabs {
    display: flex;
    border-bottom: 1px solid var(--admin-border);
    margin-bottom: 1.5rem;
    overflow-x: auto;
    background-color: var(--admin-bg-surface);
    padding: 0 1rem;
}

.admin-tab {
    padding: 0.85rem 1.25rem;
    color: var(--admin-text-muted);
    font-weight: 700;
    font-size: 0.8rem;
    background: transparent;
    border: none;
    border-bottom: 3px solid transparent;
    white-space: nowrap;
}

.admin-tab.active {
    color: var(--admin-accent);
    border-bottom-color: var(--admin-accent);
}

.admin-tab-pane {
    display: none;
}

.admin-tab-pane.active {
    display: block;
}

.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.25rem;
}

.form-control {
    display: flex;
    flex-direction: column;
    margin-bottom: 1rem;
}

.form-control.full-width {
    grid-column: 1 / -1;
}

.form-control label {
    font-size: 0.8rem;
    font-weight: bold;
    margin-bottom: 0.5rem;
    color: var(--admin-text-muted);
}

.form-control input, .form-control select, .form-control textarea {
    padding: 0.65rem 0.85rem;
    background-color: #ffffff;
    border: 1px solid var(--admin-border);
    color: var(--admin-text-main);
    border-radius: 4px;
    font-size: 0.85rem;
    outline: none;
}

.form-control input:focus, .form-control select:focus, .form-control textarea:focus {
    border-color: var(--admin-accent);
}

.form-control textarea {
    height: 100px;
    resize: none;
}

/* Ficha Técnica Dinámica */
.specs-builder-row {
    display: grid;
    grid-template-columns: 1fr 1fr auto;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
}

/* Área de Carga CSV Drop */
.csv-upload-zone {
    border: 2px dashed var(--admin-border);
    border-radius: 6px;
    padding: 2.5rem;
    text-align: center;
    background-color: var(--admin-bg-surface);
    cursor: pointer;
    transition: var(--transition-smooth);
    margin-bottom: 1.5rem;
}

.csv-upload-zone:hover {
    border-color: var(--admin-accent);
}

.csv-upload-zone i {
    font-size: 3rem;
    color: var(--admin-accent);
    margin-bottom: 1rem;
}

.csv-upload-zone p {
    color: var(--admin-text-muted);
}

/* Login Admin */
.admin-login-wrapper {
    width: 100vw;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--admin-bg-dark);
}

.admin-login-box {
    width: 100%;
    max-width: 400px;
    background-color: var(--admin-bg-panel);
    border: 1px solid var(--admin-border);
    border-radius: 8px;
    padding: 2.5rem;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

/* ─── Selects, Dropdowns e Inputs Form Controls ─── */
.admin-body select,
.admin-body input,
.admin-body textarea {
    color: #111827 !important;
    background-color: #ffffff;
}

.admin-body option {
    color: #111827 !important;
    background-color: #ffffff !important;
}

/* Estilos para Controles de Filtro de Gráficos */
.chart-period-btn {
    padding: 0.35rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 700;
    border: 1px solid var(--admin-border);
    background-color: #ffffff;
    color: var(--admin-text-muted);
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.chart-period-btn.active, .chart-period-btn:hover {
    background-color: var(--admin-accent);
    color: #111827;
    border-color: var(--admin-accent);
}

/* ─── Buscador de Productos Admin ─── */
.admin-search-box input:focus {
    border-color: var(--admin-accent) !important;
    box-shadow: 0 0 0 2px rgba(16, 185, 129, 0.2);
}

@media (max-width: 768px) {
    .admin-container-header {
        flex-direction: column;
        align-items: stretch !important;
        gap: 0.75rem !important;
    }
    .admin-search-box {
        max-width: 100% !important;
    }
}