/**
 * ========================================================================
 * NEXUS AI - PANEL ADMINISTRATIVO MAESTRO (TEMA OSCURO PREMIUM)
 * ========================================================================
 */

:root {
    --admin-bg-base: #07090e;
    --admin-bg-card: #0f141c;
    --admin-bg-card-hover: #161c26;
    --admin-bg-input: #0a0d14;
    --admin-border: rgba(255, 255, 255, 0.08);
    --admin-border-focus: #6366f1;
    --admin-accent-purple: #8b5cf6;
    --admin-accent-cyan: #06b6d4;
    --admin-accent-emerald: #10b981;
    --admin-accent-amber: #f59e0b;
    --admin-accent-rose: #f43f5e;
}

/* Base del Panel Administrativo */
body.admin-body {
    background-color: var(--admin-bg-base);
    color: #f1f5f9;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Layout Principal con Sidebar */
.admin-layout {
    display: flex;
    min-height: 100vh;
    width: 100%;
}

/* Sidebar Ultra Moderno */
.admin-sidebar {
    width: 270px;
    background: #090c13;
    border-right: 1px solid var(--admin-border);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    position: sticky;
    top: 0;
    height: 100vh;
    z-index: 50;
    transition: all 0.25s ease;
}

.admin-sidebar-header {
    padding: 24px 20px 18px;
    border-bottom: 1px solid var(--admin-border);
    display: flex;
    align-items: center;
    gap: 12px;
}

.admin-brand-logo {
    width: 42px;
    height: 42px;
    border-radius: 12px;
    background: linear-gradient(135deg, #6366f1 0%, #a855f7 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
}

.admin-brand-info h2 {
    font-size: 17px;
    font-weight: 700;
    color: #ffffff;
    letter-spacing: -0.3px;
    line-height: 1.2;
}

.admin-brand-badge {
    display: inline-block;
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    color: #818cf8;
    background: rgba(99, 102, 241, 0.15);
    padding: 2px 7px;
    border-radius: 6px;
    margin-top: 3px;
    border: 1px solid rgba(99, 102, 241, 0.3);
}

/* Navegación del Sidebar */
.admin-sidebar-nav {
    flex: 1;
    overflow-y: auto;
    padding: 16px 12px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.admin-nav-category {
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    color: #64748b;
    padding: 14px 12px 6px;
}

.admin-nav-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 14px;
    border-radius: 10px;
    color: #94a3b8;
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.2s ease;
    cursor: pointer;
    border: 1px solid transparent;
}

.admin-nav-link:hover {
    color: #ffffff;
    background: rgba(255, 255, 255, 0.04);
}

.admin-nav-link.active {
    color: #ffffff;
    background: linear-gradient(90deg, rgba(99, 102, 241, 0.15) 0%, rgba(168, 85, 247, 0.08) 100%);
    border: 1px solid rgba(99, 102, 241, 0.3);
    box-shadow: 0 2px 10px rgba(99, 102, 241, 0.15);
}

.admin-nav-icon {
    font-size: 18px;
    width: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.admin-nav-badge {
    margin-left: auto;
    font-size: 11px;
    font-weight: 600;
    padding: 2px 8px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.08);
    color: #cbd5e1;
}

.admin-nav-link.active .admin-nav-badge {
    background: rgba(99, 102, 241, 0.3);
    color: #c7d2fe;
}

/* Footer del Sidebar */
.admin-sidebar-footer {
    padding: 16px;
    border-top: 1px solid var(--admin-border);
    background: rgba(0, 0, 0, 0.2);
    display: flex;
    flex-direction: column;
    gap: 8px;
}

/* Área Principal */
.admin-main {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
    background: radial-gradient(circle at top right, rgba(99, 102, 241, 0.05) 0%, transparent 60%);
}

/* Header Superior Flotante y Glassmorphic */
.admin-header {
    height: 72px;
    background: rgba(9, 12, 19, 0.85);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--admin-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 28px;
    position: sticky;
    top: 0;
    z-index: 40;
}

.admin-header-title-wrap {
    display: flex;
    align-items: center;
    gap: 12px;
}

.admin-header-title {
    font-size: 20px;
    font-weight: 700;
    color: #ffffff;
    letter-spacing: -0.3px;
}

.admin-header-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

/* Indicadores de Estado en Vivo (Pills) */
.live-status-pill {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--admin-border);
    border-radius: 999px;
    font-size: 13px;
    color: #cbd5e1;
}

.pulse-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    position: relative;
}

.pulse-dot.green {
    background: #10b981;
    box-shadow: 0 0 10px #10b981;
}

.pulse-dot.green::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    border-radius: 50%;
    background: #10b981;
    animation: pulse-ring 2s infinite;
}

.pulse-dot.amber {
    background: #f59e0b;
    box-shadow: 0 0 10px #f59e0b;
}

.pulse-dot.red {
    background: #ef4444;
    box-shadow: 0 0 10px #ef4444;
}

@keyframes pulse-ring {
    0% { transform: scale(1); opacity: 0.8; }
    100% { transform: scale(2.8); opacity: 0; }
}

/* Perfil de Administrador en Header */
.admin-user-pill {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 4px 6px 4px 12px;
    background: var(--admin-bg-card);
    border: 1px solid var(--admin-border);
    border-radius: 999px;
}

.admin-user-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 700;
    color: #fff;
}

/* Contenido del Panel */
.admin-content {
    flex: 1;
    padding: 28px;
    max-width: 1440px;
    width: 100%;
    margin: 0 auto;
}

/* Secciones / Vistas */
.admin-section {
    display: none;
    animation: fadeInAdmin 0.25s ease-out forwards;
}

.admin-section.active {
    display: block;
}

@keyframes fadeInAdmin {
    from { opacity: 0; transform: translateY(6px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Cuadrícula de Tarjetas de Métricas (Dashboard) */
.admin-kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
    margin-bottom: 28px;
}

.admin-kpi-card {
    background: var(--admin-bg-card);
    border: 1px solid var(--admin-border);
    border-radius: 16px;
    padding: 22px;
    position: relative;
    overflow: hidden;
    transition: all 0.25s ease;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.admin-kpi-card:hover {
    transform: translateY(-3px);
    border-color: rgba(99, 102, 241, 0.4);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.5);
}

.admin-kpi-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, #6366f1, #a855f7);
}

.admin-kpi-card.emerald::before { background: linear-gradient(90deg, #10b981, #06b6d4); }
.admin-kpi-card.amber::before { background: linear-gradient(90deg, #f59e0b, #f97316); }
.admin-kpi-card.rose::before { background: linear-gradient(90deg, #f43f5e, #ec4899); }
.admin-kpi-card.cyan::before { background: linear-gradient(90deg, #06b6d4, #3b82f6); }

.admin-kpi-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 14px;
}

.admin-kpi-title {
    font-size: 13px;
    font-weight: 600;
    color: #94a3b8;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.admin-kpi-icon {
    width: 38px;
    height: 38px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    background: rgba(255, 255, 255, 0.05);
}

.admin-kpi-value {
    font-size: 32px;
    font-weight: 800;
    color: #ffffff;
    letter-spacing: -0.5px;
    line-height: 1.1;
    margin-bottom: 6px;
}

.admin-kpi-footer {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    color: #64748b;
}

.admin-kpi-trend {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-weight: 600;
    padding: 2px 6px;
    border-radius: 4px;
}

.admin-kpi-trend.positive {
    background: rgba(16, 185, 129, 0.15);
    color: #34d399;
}

/* Tarjetas Contenedoras (Cards) */
.admin-card {
    background: var(--admin-bg-card);
    border: 1px solid var(--admin-border);
    border-radius: 16px;
    overflow: hidden;
    margin-bottom: 24px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.admin-card-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--admin-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
}

.admin-card-title {
    font-size: 17px;
    font-weight: 700;
    color: #ffffff;
    display: flex;
    align-items: center;
    gap: 10px;
}

.admin-card-body {
    padding: 24px;
}

/* Barra de Filtros y Búsqueda */
.admin-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 20px;
}

.admin-search-box {
    position: relative;
    max-width: 380px;
    width: 100%;
}

.admin-search-icon {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: #64748b;
    pointer-events: none;
}

.admin-search-input {
    width: 100%;
    background: var(--admin-bg-input);
    border: 1px solid var(--admin-border);
    border-radius: 10px;
    padding: 10px 14px 10px 40px;
    color: #ffffff;
    font-size: 14px;
    outline: none;
    transition: all 0.2s ease;
}

.admin-search-input:focus {
    border-color: var(--admin-border-focus);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

/* Tablas Oscuras Profesionales */
.admin-table-container {
    overflow-x: auto;
    border: 1px solid var(--admin-border);
    border-radius: 12px;
}

.admin-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    font-size: 14px;
}

.admin-table th {
    background: rgba(255, 255, 255, 0.02);
    color: #94a3b8;
    font-weight: 600;
    text-transform: uppercase;
    font-size: 11px;
    letter-spacing: 0.6px;
    padding: 14px 18px;
    border-bottom: 1px solid var(--admin-border);
    white-space: nowrap;
}

.admin-table td {
    padding: 14px 18px;
    border-bottom: 1px solid var(--admin-border);
    color: #e2e8f0;
    vertical-align: middle;
}

.admin-table tr:hover td {
    background: rgba(255, 255, 255, 0.02);
}

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

/* Badges de Estado */
.badge-pill {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 3px 10px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 600;
    white-space: nowrap;
}

.badge-pill.active, .badge-pill.online {
    background: rgba(16, 185, 129, 0.15);
    color: #34d399;
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.badge-pill.suspended, .badge-pill.offline {
    background: rgba(239, 68, 68, 0.15);
    color: #f87171;
    border: 1px solid rgba(239, 68, 68, 0.3);
}

.badge-pill.vip, .badge-pill.superadmin {
    background: rgba(139, 92, 246, 0.15);
    color: #c084fc;
    border: 1px solid rgba(139, 92, 246, 0.3);
}

.badge-pill.info, .badge-pill.free {
    background: rgba(6, 182, 212, 0.15);
    color: #22d3ee;
    border: 1px solid rgba(6, 182, 212, 0.3);
}

.badge-pill.pending {
    background: rgba(245, 158, 11, 0.15);
    color: #fbbf24;
    border: 1px solid rgba(245, 158, 11, 0.3);
}

/* Formularios Oscuros */
.admin-form-group {
    margin-bottom: 20px;
}

.admin-form-label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: #cbd5e1;
    margin-bottom: 8px;
}

.admin-form-input, .admin-form-select, .admin-form-textarea {
    width: 100%;
    background: var(--admin-bg-input);
    border: 1px solid var(--admin-border);
    border-radius: 10px;
    padding: 12px 14px;
    color: #ffffff;
    font-size: 14px;
    outline: none;
    transition: all 0.2s ease;
}

.admin-form-input:focus, .admin-form-select:focus, .admin-form-textarea:focus {
    border-color: var(--admin-border-focus);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.25);
    background: #0d111a;
}

/* Botones Modernos */
.admin-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 18px;
    border-radius: 10px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    border: 1px solid transparent;
    text-decoration: none;
}

.admin-btn-primary {
    background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    color: #ffffff;
    box-shadow: 0 4px 14px rgba(99, 102, 241, 0.35);
}

.admin-btn-primary:hover {
    background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.5);
    transform: translateY(-1px);
}

.admin-btn-secondary {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--admin-border);
    color: #cbd5e1;
}

.admin-btn-secondary:hover {
    background: rgba(255, 255, 255, 0.09);
    color: #ffffff;
}

.admin-btn-danger {
    background: rgba(239, 68, 68, 0.15);
    border-color: rgba(239, 68, 68, 0.3);
    color: #f87171;
}

.admin-btn-danger:hover {
    background: #ef4444;
    color: #ffffff;
}

.admin-btn-sm {
    padding: 6px 12px;
    font-size: 12px;
    border-radius: 8px;
}

/* Banner de API & Conexión */
.api-connection-box {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.08) 0%, rgba(139, 92, 246, 0.03) 100%);
    border: 1px solid rgba(99, 102, 241, 0.25);
    border-radius: 16px;
    padding: 24px;
    margin-bottom: 24px;
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.input-with-action {
    display: flex;
    gap: 8px;
}

.input-with-action input {
    flex: 1;
}

/* Modales Oscuros Glassmorphic */
.admin-modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.75);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 100;
    padding: 20px;
    animation: fadeInModal 0.2s ease-out forwards;
}

.admin-modal-backdrop.active {
    display: flex;
}

.admin-modal-card {
    background: #0f141c;
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 20px;
    width: 100%;
    max-width: 560px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.8), 0 0 30px rgba(99, 102, 241, 0.15);
    overflow: hidden;
    animation: scaleInModal 0.25s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

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

@keyframes scaleInModal {
    from { transform: scale(0.94); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
}

.admin-modal-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--admin-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.admin-modal-title {
    font-size: 18px;
    font-weight: 700;
    color: #ffffff;
}

.admin-modal-close {
    background: none;
    border: none;
    color: #94a3b8;
    font-size: 20px;
    cursor: pointer;
    width: 32px;
    height: 32px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}

.admin-modal-close:hover {
    background: rgba(255, 255, 255, 0.08);
    color: #ffffff;
}

.admin-modal-body {
    padding: 24px;
    max-height: 75vh;
    overflow-y: auto;
}

.admin-modal-footer {
    padding: 18px 24px;
    border-top: 1px solid var(--admin-border);
    background: rgba(0, 0, 0, 0.2);
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 12px;
}

/* Pantalla de Login de Administración */
.admin-auth-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at center, #101524 0%, #06080d 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 200;
    padding: 20px;
}

.admin-auth-box {
    background: #0f141c;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    width: 100%;
    max-width: 440px;
    padding: 36px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.7), 0 0 40px rgba(99, 102, 241, 0.15);
    text-align: center;
}

.admin-auth-tabs {
    display: flex;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--admin-border);
    border-radius: 12px;
    padding: 4px;
    margin: 20px 0;
}

.admin-auth-tab {
    flex: 1;
    padding: 8px 12px;
    border: none;
    background: none;
    color: #94a3b8;
    font-size: 13px;
    font-weight: 600;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s;
}

.admin-auth-tab.active {
    background: #1e2638;
    color: #ffffff;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

/* Grid de Planes de Membresía */
.admin-plans-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 20px;
}

.admin-plan-card {
    background: var(--admin-bg-card);
    border: 1px solid var(--admin-border);
    border-radius: 16px;
    padding: 24px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    position: relative;
    transition: all 0.2s ease;
}

.admin-plan-card:hover {
    border-color: rgba(99, 102, 241, 0.4);
    transform: translateY(-2px);
}

/* Responsividad */
@media (max-width: 900px) {
    .admin-sidebar {
        position: fixed;
        left: -270px;
        top: 0;
        bottom: 0;
        box-shadow: 10px 0 30px rgba(0, 0, 0, 0.5);
    }
    .admin-sidebar.open {
        left: 0;
    }
    .admin-header {
        padding: 0 16px;
    }
    .admin-content {
        padding: 16px;
    }
}