/* ========== ADMIN CSS V12 - DISEÑO MODERNO ========== */

/* Variables */
:root {
    --admin-bg: #0f172a;
    --admin-superficie: #1e293b;
    --admin-superficie-2: #334155;
    --admin-texto: #f1f5f9;
    --admin-texto-sec: #94a3b8;
    --admin-borde: #475569;
    --admin-primario: #3b82f6;
    --admin-secundario: #10b981;
    --admin-error: #ef4444;
    --admin-warning: #f59e0b;
    --admin-radio: 12px;
    --admin-transicion: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body.admin-body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--admin-bg);
    color: var(--admin-texto);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
}

/* ========== LOGIN SCREEN ========== */
.login-screen {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
    background-size: 400% 400%;
    animation: gradientFlow 15s ease infinite;
    padding: 20px;
}

@keyframes gradientFlow {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

.login-box {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    padding: 48px 40px;
    border-radius: 24px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.4);
    width: 100%;
    max-width: 420px;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.login-header {
    text-align: center;
    margin-bottom: 32px;
}

.login-header h1 {
    color: #1e293b;
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.login-header p {
    color: #64748b;
    font-size: 0.95rem;
}

.login-box .form-group {
    margin-bottom: 20px;
}

.login-box .form-group label {
    display: block;
    margin-bottom: 8px;
    color: #475569;
    font-weight: 600;
    font-size: 0.9rem;
}

.login-box .form-group input {
    width: 100%;
    padding: 14px 16px;
    border: 2px solid #e2e8f0;
    border-radius: 12px;
    font-size: 1rem;
    transition: var(--admin-transicion);
    background: #f8fafc;
    color: #1e293b;
}

.login-box .form-group input:focus {
    outline: none;
    border-color: #667eea;
    background: white;
    box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.15);
}

.login-box .form-group input::placeholder {
    color: #94a3b8;
}

.btn-login {
    width: 100%;
    padding: 16px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--admin-transicion);
    margin-top: 8px;
}

.btn-login:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.4);
}

.btn-login:active {
    transform: translateY(0);
}

.login-error {
    color: #dc2626;
    background: #fef2f2;
    padding: 12px 16px;
    border-radius: 10px;
    margin-top: 16px;
    text-align: center;
    font-weight: 500;
    border: 1px solid #fecaca;
}

.back-link {
    display: block;
    text-align: center;
    margin-top: 24px;
    color: #667eea;
    text-decoration: none;
    font-weight: 500;
    transition: var(--admin-transicion);
}

.back-link:hover {
    color: #764ba2;
}

/* ========== ADMIN PANEL ========== */
.admin-panel {
    min-height: 100vh;
}

/* ========== ADMIN HEADER ========== */
.admin-header {
    background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
    color: white;
    padding: 20px 32px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
    border-bottom: 1px solid var(--admin-borde);
    position: sticky;
    top: 0;
    z-index: 100;
}

.admin-header .header-content h1 {
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 4px;
}

.admin-header .header-content .subtitle {
    font-size: 0.85rem;
    color: var(--admin-texto-sec);
}

.admin-header .header-actions {
    display: flex;
    gap: 12px;
}

.btn-ver-sitio {
    padding: 10px 20px;
    background: var(--admin-primario);
    color: white;
    text-decoration: none;
    border-radius: 10px;
    font-weight: 600;
    font-size: 0.9rem;
    transition: var(--admin-transicion);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.btn-ver-sitio:hover {
    background: #2563eb;
    transform: translateY(-2px);
}

.btn-logout {
    padding: 10px 20px;
    background: var(--admin-error);
    color: white;
    border: none;
    border-radius: 10px;
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    transition: var(--admin-transicion);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.btn-logout:hover {
    background: #dc2626;
    transform: translateY(-2px);
}

/* ========== ADMIN MAIN ========== */
.admin-main {
    padding: 0;
    max-width: 1400px;
    margin: 0 auto;
}

/* ========== TABS ========== */
.admin-tabs {
    display: flex;
    background: var(--admin-superficie);
    padding: 0;
    gap: 0;
    overflow-x: auto;
    border-bottom: 1px solid var(--admin-borde);
}

.tab-btn {
    padding: 18px 28px;
    background: transparent;
    color: var(--admin-texto-sec);
    border: none;
    cursor: pointer;
    font-size: 0.95rem;
    font-weight: 500;
    transition: var(--admin-transicion);
    white-space: nowrap;
    position: relative;
    display: flex;
    align-items: center;
    gap: 8px;
}

.tab-btn::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--admin-primario);
    transform: scaleX(0);
    transition: var(--admin-transicion);
}

.tab-btn:hover {
    background: rgba(255, 255, 255, 0.05);
    color: var(--admin-texto);
}

.tab-btn.active {
    color: var(--admin-texto);
    background: var(--admin-bg);
}

.tab-btn.active::after {
    transform: scaleX(1);
}

/* ========== TAB CONTENT ========== */
.tab-content {
    display: none;
    padding: 32px;
    animation: fadeInTab 0.3s ease;
}

.tab-content.active {
    display: block;
}

@keyframes fadeInTab {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ========== CONFIG SECTION ========== */
.config-section {
    background: var(--admin-superficie);
    padding: 28px;
    border-radius: 16px;
    margin-bottom: 24px;
    border: 1px solid var(--admin-borde);
}

.config-section h2 {
    color: var(--admin-texto);
    margin-bottom: 8px;
    font-size: 1.25rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 10px;
}

.section-desc {
    color: var(--admin-texto-sec);
    margin-bottom: 28px;
    font-size: 0.95rem;
}

/* ========== ORIGEN OPTIONS ========== */
.origen-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.origen-option {
    cursor: pointer;
}

.origen-option input[type="radio"] {
    display: none;
}

.option-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 28px 24px;
    background: var(--admin-bg);
    border: 2px solid var(--admin-borde);
    border-radius: 16px;
    transition: var(--admin-transicion);
    text-align: center;
}

.origen-option:hover .option-content {
    border-color: var(--admin-primario);
    transform: translateY(-4px);
}

.origen-option input:checked + .option-content {
    border-color: var(--admin-secundario);
    background: rgba(16, 185, 129, 0.1);
}

.option-icon {
    font-size: 2.5rem;
    margin-bottom: 12px;
}

.option-title {
    font-weight: 600;
    font-size: 1.1rem;
    margin-bottom: 6px;
    color: var(--admin-texto);
}

.option-desc {
    font-size: 0.85rem;
    color: var(--admin-texto-sec);
}

/* ========== CONFIG BOX ========== */
.config-box {
    background: var(--admin-bg);
    padding: 24px;
    border-radius: 12px;
    margin-top: 24px;
    border: 1px solid var(--admin-borde);
}

.config-box h3 {
    color: var(--admin-texto);
    margin-bottom: 20px;
    font-size: 1.05rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
}

/* ========== UPLOAD AREA ========== */
.upload-area {
    border: 2px dashed var(--admin-borde);
    padding: 40px;
    text-align: center;
    border-radius: 16px;
    cursor: pointer;
    transition: var(--admin-transicion);
    background: rgba(59, 130, 246, 0.05);
}

.upload-area:hover,
.upload-area.dragover {
    border-color: var(--admin-primario);
    background: rgba(59, 130, 246, 0.1);
}

.upload-label {
    display: flex;
    flex-direction: column;
    align-items: center;
    cursor: pointer;
}

.upload-icon {
    font-size: 3rem;
    margin-bottom: 16px;
}

.upload-text {
    font-weight: 600;
    font-size: 1.05rem;
    color: var(--admin-texto);
    margin-bottom: 8px;
}

.upload-hint {
    font-size: 0.85rem;
    color: var(--admin-texto-sec);
}

/* ========== ARCHIVO INFO ========== */
.archivo-info {
    display: none;
    background: rgba(16, 185, 129, 0.1);
    padding: 16px 20px;
    border-radius: 12px;
    margin-top: 16px;
    align-items: center;
    justify-content: space-between;
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.archivo-nombre {
    color: var(--admin-texto);
    font-weight: 600;
}

.archivo-productos {
    color: var(--admin-secundario);
    font-weight: 600;
    margin-left: 12px;
}

.btn-eliminar-archivo {
    background: var(--admin-error);
    color: white;
    border: none;
    width: 32px;
    height: 32px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1rem;
    transition: var(--admin-transicion);
}

.btn-eliminar-archivo:hover {
    background: #dc2626;
}

/* ========== HELP BOX ========== */
.help-box {
    background: rgba(59, 130, 246, 0.1);
    padding: 20px;
    border-radius: 12px;
    margin-top: 20px;
    border-left: 4px solid var(--admin-primario);
}

.help-box h4 {
    color: var(--admin-primario);
    margin-bottom: 12px;
    font-size: 0.95rem;
}

.help-box p {
    color: var(--admin-texto-sec);
    margin-bottom: 8px;
    font-size: 0.9rem;
    line-height: 1.6;
}

.help-box code {
    background: var(--admin-bg);
    padding: 3px 8px;
    border-radius: 6px;
    color: #f472b6;
    font-family: 'SF Mono', Monaco, monospace;
    font-size: 0.85rem;
}

.help-box pre {
    background: var(--admin-bg);
    padding: 16px;
    border-radius: 8px;
    overflow-x: auto;
    font-size: 0.8rem;
    color: var(--admin-texto-sec);
    font-family: 'SF Mono', Monaco, monospace;
}

/* ========== COLUMNAS GRID ========== */
.columnas-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 16px;
}

.columna-config-item {
    background: var(--admin-bg);
    padding: 20px;
    border-radius: 12px;
    border: 1px solid var(--admin-borde);
}

.columna-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

/* ========== TOGGLE SWITCH ========== */
.columna-toggle {
    display: flex;
    align-items: center;
    cursor: pointer;
    gap: 12px;
}

.columna-toggle input[type="checkbox"] {
    display: none;
}

.toggle-slider {
    width: 52px;
    height: 28px;
    background: var(--admin-borde);
    border-radius: 34px;
    position: relative;
    transition: var(--admin-transicion);
    flex-shrink: 0;
}

.toggle-slider::after {
    content: '';
    position: absolute;
    width: 22px;
    height: 22px;
    left: 3px;
    top: 3px;
    background: white;
    border-radius: 50%;
    transition: var(--admin-transicion);
    box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

.columna-toggle input:checked + .toggle-slider {
    background: var(--admin-secundario);
}

.columna-toggle input:checked + .toggle-slider::after {
    transform: translateX(24px);
}

.columna-toggle.obligatoria {
    opacity: 0.6;
    cursor: not-allowed;
}

.columna-toggle.obligatoria .toggle-slider {
    background: var(--admin-primario);
}

.toggle-title {
    font-weight: 600;
    color: var(--admin-texto);
    font-size: 0.95rem;
}

.toggle-info {
    flex: 1;
}

.toggle-desc {
    display: block;
    color: var(--admin-texto-sec);
    font-size: 0.8rem;
    margin-top: 2px;
}

.badge-obligatorio {
    font-size: 0.7rem;
    background: var(--admin-primario);
    color: white;
    padding: 4px 10px;
    border-radius: 20px;
    font-weight: 600;
}

.input-nombre-columna {
    width: 100%;
    padding: 10px 14px;
    background: var(--admin-superficie);
    border: 2px solid var(--admin-borde);
    border-radius: 8px;
    color: var(--admin-texto);
    font-size: 0.9rem;
    transition: var(--admin-transicion);
}

.input-nombre-columna:focus {
    outline: none;
    border-color: var(--admin-primario);
}

/* ========== FORM GROUPS ========== */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    color: var(--admin-texto);
    margin-bottom: 8px;
    font-weight: 600;
    font-size: 0.9rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 14px;
    background: var(--admin-bg);
    border: 2px solid var(--admin-borde);
    border-radius: 10px;
    color: var(--admin-texto);
    font-size: 0.95rem;
    transition: var(--admin-transicion);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--admin-primario);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

.form-group small {
    display: block;
    color: var(--admin-texto-sec);
    margin-top: 6px;
    font-size: 0.8rem;
}

/* ========== BUTTONS ========== */
.btn-guardar,
.btn-primary {
    padding: 14px 28px;
    background: linear-gradient(135deg, var(--admin-secundario) 0%, #059669 100%);
    color: white;
    border: none;
    border-radius: 10px;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: var(--admin-transicion);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-guardar:hover,
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(16, 185, 129, 0.4);
}

.btn-secondary {
    padding: 12px 24px;
    background: var(--admin-primario);
    color: white;
    border: none;
    border-radius: 10px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--admin-transicion);
}

.btn-secondary:hover {
    background: #2563eb;
}

.btn-probar {
    padding: 10px 20px;
    background: var(--admin-primario);
    color: white;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--admin-transicion);
    font-size: 0.9rem;
}

.btn-probar:hover {
    transform: translateY(-2px);
}

.btn-danger {
    padding: 14px 28px;
    background: linear-gradient(135deg, var(--admin-error) 0%, #dc2626 100%);
    color: white;
    border: none;
    border-radius: 10px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--admin-transicion);
}

.btn-danger:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(239, 68, 68, 0.4);
}

/* ========== PALETAS ========== */
.paletas-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 16px;
}

.paleta-card {
    background: var(--admin-bg);
    padding: 16px;
    border-radius: 12px;
    cursor: pointer;
    transition: var(--admin-transicion);
    border: 2px solid var(--admin-borde);
    text-align: center;
}

.paleta-card:hover {
    border-color: var(--admin-primario);
    transform: translateY(-4px);
}

.paleta-colores {
    display: flex;
    gap: 6px;
    margin-bottom: 12px;
    justify-content: center;
}

.paleta-colores div {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

.paleta-card span {
    font-size: 0.85rem;
    color: var(--admin-texto-sec);
    font-weight: 500;
}

/* ========== COLOR PICKER ========== */
.colores-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}

.color-picker {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.color-picker label {
    font-weight: 600;
    color: var(--admin-texto);
    font-size: 0.9rem;
}

.color-picker input[type="color"] {
    width: 100%;
    height: 50px;
    border: 2px solid var(--admin-borde);
    border-radius: 10px;
    cursor: pointer;
    padding: 4px;
}

.color-picker small {
    color: var(--admin-texto-sec);
    font-size: 0.8rem;
}

/* ========== WARNING BOX ========== */
.warning-box {
    background: rgba(245, 158, 11, 0.1) !important;
    border-color: rgba(245, 158, 11, 0.3) !important;
}

.warning-box h3 {
    color: var(--admin-warning) !important;
}

/* ========== RESULTADO CONEXION ========== */
.resultado-conexion {
    padding: 16px 20px;
    border-radius: 10px;
    margin-top: 16px;
    display: none;
    font-weight: 500;
}

.resultado-conexion.success {
    background: rgba(16, 185, 129, 0.15);
    color: var(--admin-secundario);
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.resultado-conexion.error {
    background: rgba(239, 68, 68, 0.15);
    color: var(--admin-error);
    border: 1px solid rgba(239, 68, 68, 0.3);
}

/* ========== BOTÓN FLOTANTE ========== */
.guardar-flotante {
    position: fixed;
    bottom: 32px;
    right: 32px;
    z-index: 1000;
}

.btn-guardar-grande {
    padding: 18px 32px;
    background: linear-gradient(135deg, var(--admin-secundario) 0%, #059669 100%);
    color: white;
    border: none;
    border-radius: 16px;
    font-weight: 700;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--admin-transicion);
    box-shadow: 0 8px 30px rgba(16, 185, 129, 0.4);
    display: flex;
    align-items: center;
    gap: 10px;
}

.btn-guardar-grande:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(16, 185, 129, 0.5);
}

/* ========== INLINE TOGGLE ========== */
.columna-toggle.inline {
    display: inline-flex;
    margin-right: 8px;
}

/* ========== RESPONSIVE ========== */
@media (max-width: 768px) {
    .admin-header {
        flex-direction: column;
        padding: 16px;
    }
    
    .admin-tabs {
        flex-wrap: nowrap;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
    
    .tab-btn {
        padding: 14px 20px;
        font-size: 0.85rem;
    }
    
    .tab-content {
        padding: 20px;
    }
    
    .columnas-grid,
    .origen-options,
    .paletas-grid {
        grid-template-columns: 1fr;
    }
    
    .login-box {
        padding: 32px 24px;
    }
    
    .guardar-flotante {
        bottom: 16px;
        right: 16px;
        left: 16px;
    }
    
    .btn-guardar-grande {
        width: 100%;
        justify-content: center;
    }
}

/* ========== NOTIFICACIÓN ADMIN ========== */
.admin-notification {
    position: fixed;
    top: 24px;
    right: 24px;
    padding: 16px 24px;
    border-radius: 12px;
    color: white;
    font-weight: 600;
    z-index: 10000;
    animation: slideInNotif 0.3s ease;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
}

@keyframes slideInNotif {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

/* ========== SCROLLBAR ========== */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--admin-bg);
}

::-webkit-scrollbar-thumb {
    background: var(--admin-borde);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--admin-texto-sec);
}

/* ========== TABLA DE PRODUCTOS ADMIN ========== */
.tabla-productos-admin {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

.tabla-productos-admin thead {
    position: sticky;
    top: 0;
    z-index: 10;
}

.tabla-productos-admin th {
    background: var(--admin-primario);
    color: white;
    padding: 12px 8px;
    text-align: left;
    font-weight: 600;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.tabla-productos-admin td {
    padding: 8px;
    border-bottom: 1px solid var(--admin-borde);
    vertical-align: middle;
}

.tabla-productos-admin tbody tr:hover {
    background: rgba(59, 130, 246, 0.1);
}

.tabla-productos-admin tbody tr.producto-oculto {
    opacity: 0.5;
    background: rgba(0, 0, 0, 0.2);
}

.tabla-productos-admin input[type="text"],
.tabla-productos-admin input[type="number"] {
    width: 100%;
    padding: 6px 8px;
    border: 1px solid var(--admin-borde);
    border-radius: 6px;
    background: var(--admin-bg);
    color: var(--admin-texto);
    font-size: 0.85rem;
}

.tabla-productos-admin input[type="text"]:focus,
.tabla-productos-admin input[type="number"]:focus {
    border-color: var(--admin-primario);
    outline: none;
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.2);
}

.tabla-productos-admin input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
}

.btn-eliminar-producto {
    background: #ef4444;
    color: white;
    border: none;
    padding: 6px 10px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.85rem;
    transition: var(--admin-transicion);
}

.btn-eliminar-producto:hover {
    background: #dc2626;
}

.btn-editar-producto {
    background: var(--admin-primario);
    color: white;
    border: none;
    padding: 6px 10px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.85rem;
    transition: var(--admin-transicion);
    margin-right: 4px;
}

.btn-editar-producto:hover {
    background: #2563eb;
}