:root {
    --primary-yellow: #ffe600;
    --primary-yellow-dark: #ffd100;
    --navy-dark: #1e245a;
    --navy-deep: #0f143a;
    --accent-blue: #3483fa;
    --accent-blue-hover: #2968c8;
    --green-meli: #00a650;
    --slate-800: #1e293b;
    --slate-600: #475569;
    --slate-400: #94a3b8;
    --slate-100: #f1f5f9;
    --slate-50: #f8fafc;
    --border-color: #e2e8f0;
    --shadow-soft: 0 10px 30px rgba(15, 23, 42, 0.08);
    --shadow-card: 0 20px 40px -15px rgba(30, 36, 90, 0.12);
}

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

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background-color: #f1f5f9;
    color: var(--slate-800);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header Compacto */
.login-header {
    background: var(--primary-yellow);
    border-bottom: 1px solid rgba(0, 0, 0, 0.08);
    padding: 14px 0;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.login-header-container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.brand-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
}

.brand-icon {
    width: 40px;
    height: 40px;
    background: var(--navy-dark);
    color: var(--primary-yellow);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    box-shadow: 0 3px 8px rgba(30, 36, 90, 0.25);
}

.brand-name {
    font-size: 20px;
    font-weight: 800;
    color: var(--navy-dark);
    letter-spacing: -0.3px;
}

.brand-name span {
    color: var(--green-meli);
}

.header-back-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    font-size: 13px;
    font-weight: 700;
    color: var(--navy-dark);
    background: rgba(255, 255, 255, 0.7);
    padding: 8px 14px;
    border-radius: 8px;
    border: 1px solid rgba(30, 36, 90, 0.15);
    transition: all 0.2s ease;
}

.header-back-link:hover {
    background: #ffffff;
    border-color: var(--navy-dark);
    transform: translateY(-1px);
}

/* Área Central */
.login-main-wrapper {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px 20px;
}

.login-card {
    width: 100%;
    max-width: 440px;
    background: #ffffff;
    border-radius: 20px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-card);
    padding: 38px 34px;
    animation: fadeInCard 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes fadeInCard {
    from {
        opacity: 0;
        transform: translateY(16px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.login-card-header {
    text-align: center;
    margin-bottom: 28px;
}

.login-avatar-badge {
    width: 58px;
    height: 58px;
    border-radius: 16px;
    background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 100%);
    color: var(--accent-blue);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    margin-bottom: 16px;
    border: 1px solid #bfdbfe;
    box-shadow: 0 4px 12px rgba(52, 131, 250, 0.12);
}

.login-card-title {
    font-size: 24px;
    font-weight: 900;
    color: #0f172a;
    letter-spacing: -0.4px;
    margin-bottom: 6px;
}

.login-card-desc {
    font-size: 13.5px;
    color: var(--slate-600);
    line-height: 1.4;
}

/* Pestañas / Tabs Estáticas (Iniciar Sesión / Registrarse) */
.auth-tabs-nav {
    display: grid;
    grid-template-columns: 1fr 1fr;
    background: #f1f5f9;
    padding: 4px;
    border-radius: 12px;
    margin-bottom: 24px;
}

.auth-tab-btn {
    border: none;
    background: transparent;
    padding: 9px 12px;
    font-size: 13px;
    font-weight: 700;
    color: var(--slate-600);
    border-radius: 9px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.auth-tab-btn.active {
    background: #ffffff;
    color: #0f172a;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.08);
}

/* Campos de Formulario */
.form-group {
    margin-bottom: 18px;
}

.form-label-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 7px;
}

.form-label {
    font-size: 12.5px;
    font-weight: 700;
    color: #1e293b;
}

.form-forgot-pass {
    font-size: 12px;
    font-weight: 600;
    color: var(--accent-blue);
    text-decoration: none;
}

.form-forgot-pass:hover {
    text-decoration: underline;
}

.form-input-container {
    position: relative;
    display: flex;
    align-items: center;
}

.form-input-icon {
    position: absolute;
    left: 14px;
    color: #94a3b8;
    font-size: 15px;
    pointer-events: none;
    transition: color 0.2s ease;
}

.form-input-field {
    width: 100%;
    height: 48px;
    padding: 0 44px 0 42px;
    font-size: 14px;
    color: #0f172a;
    background: #f8fafc;
    border: 1.5px solid var(--border-color);
    border-radius: 12px;
    outline: none;
    transition: all 0.2s ease;
    font-family: inherit;
}

.form-input-field:focus {
    background: #ffffff;
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 3.5px rgba(52, 131, 250, 0.15);
}

.form-input-field:focus + .form-input-icon {
    color: var(--accent-blue);
}

.toggle-password-btn {
    position: absolute;
    right: 12px;
    background: none;
    border: none;
    color: #94a3b8;
    cursor: pointer;
    font-size: 15px;
    padding: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color 0.2s ease;
}

.toggle-password-btn:hover {
    color: var(--slate-800);
}

/* Checkbox Recordarme */
.form-checkbox-row {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 22px;
    font-size: 13px;
    color: var(--slate-600);
    user-select: none;
}

.form-checkbox-row input[type="checkbox"] {
    width: 17px;
    height: 17px;
    accent-color: var(--accent-blue);
    cursor: pointer;
    border-radius: 4px;
}

/* Botón Principal */
.btn-auth-submit {
    width: 100%;
    height: 48px;
    background: var(--accent-blue);
    color: #ffffff;
    border: none;
    border-radius: 12px;
    font-size: 14.5px;
    font-weight: 800;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    box-shadow: 0 4px 14px rgba(52, 131, 250, 0.35);
    transition: all 0.2s ease;
}

.btn-auth-submit:hover {
    background: var(--accent-blue-hover);
    transform: translateY(-1px);
    box-shadow: 0 6px 18px rgba(52, 131, 250, 0.45);
}

.btn-auth-submit:active {
    transform: scale(0.98);
}

/* Separador */
.auth-divider {
    display: flex;
    align-items: center;
    gap: 14px;
    margin: 24px 0;
}

.auth-divider-line {
    flex: 1;
    height: 1px;
    background: var(--border-color);
}

.auth-divider-text {
    font-size: 11.5px;
    font-weight: 700;
    color: #94a3b8;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Botones Sociales / WhatsApp */
.auth-social-stack {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.btn-auth-social {
    width: 100%;
    height: 44px;
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    font-size: 13.5px;
    font-weight: 700;
    color: #1e293b;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    text-decoration: none;
    transition: all 0.2s ease;
}

.btn-auth-social:hover {
    background: #f8fafc;
    border-color: #cbd5e1;
    transform: translateY(-1px);
}

.btn-auth-social.whatsapp {
    color: #00a650;
    border-color: #bbf7d0;
    background: #f0fdf4;
}

.btn-auth-social.whatsapp:hover {
    background: #dcfce7;
    border-color: #86efac;
}

/* Mensaje Informativo Estático */
.auth-notice-box {
    margin-top: 24px;
    padding: 12px 14px;
    background: #f8fafc;
    border: 1px dashed #cbd5e1;
    border-radius: 10px;
    font-size: 12px;
    color: #64748b;
    display: flex;
    align-items: center;
    gap: 10px;
}

.auth-notice-box i {
    color: #3b82f6;
    font-size: 16px;
    flex-shrink: 0;
}

/* Footer */
.login-footer {
    text-align: center;
    padding: 20px;
    font-size: 12px;
    color: #94a3b8;
    border-top: 1px solid var(--border-color);
    background: #ffffff;
}

/* Mensajes de feedback / alertas */
.auth-alerts-container {
    margin-bottom: 20px;
}

.auth-alert {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 14px;
    border-radius: 10px;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 10px;
    line-height: 1.4;
}

.auth-alert-error {
    background: #fef2f2;
    border: 1px solid #fecaca;
    color: #dc2626;
}

.auth-alert-success {
    background: #f0fdf4;
    border: 1px solid #bbf7d0;
    color: #16a34a;
}

.auth-alert-info {
    background: #eff6ff;
    border: 1px solid #bfdbfe;
    color: #2563eb;
}

.auth-form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.field-error-msg {
    color: #dc2626;
    font-size: 12px;
    font-weight: 600;
    margin-top: 4px;
    display: flex;
    align-items: center;
    gap: 5px;
}

/* Responsive */
@media (max-width: 480px) {
    .auth-form-row {
        grid-template-columns: 1fr;
        gap: 0;
    }
    .login-card {
        padding: 26px 20px;
        border-radius: 16px;
    }
    .login-card-title {
        font-size: 21px;
    }
    .brand-name {
        font-size: 17px;
    }
    .brand-icon {
        width: 34px;
        height: 34px;
        font-size: 15px;
    }
    .header-back-link {
        padding: 6px 10px;
        font-size: 12px;
    }
}

/* ==========================================================================
   ESTILOS PREMIUM PARA FORMULARIO DE AGREGAR PRODUCTOS (ADMIN / SUPERUSER)
   ========================================================================== */
.admin-badge-strip {
    background: #eff6ff;
    border: 1px solid #bfdbfe;
    border-radius: 10px;
    padding: 10px 14px;
    font-size: 13px;
    color: #1e40af;
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 20px;
}

.checkbox-switch-label {
    display: flex;
    align-items: center;
    gap: 10px;
    background: #f8fafc;
    border: 1.5px solid #e2e8f0;
    border-radius: 10px;
    padding: 11px 14px;
    cursor: pointer;
    font-size: 13.5px;
    font-weight: 600;
    color: #1e293b;
    transition: all 0.2s ease;
}

.checkbox-switch-label:hover {
    border-color: #3b82f6;
    background: #f0fdf4;
}

.checkbox-switch-label input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: #059669;
}

textarea.form-input-field {
    resize: vertical;
    min-height: 110px;
    line-height: 1.5;
    font-family: inherit;
    padding: 12px 14px;
}

.admin-recent-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 14px;
    padding-bottom: 10px;
    border-bottom: 1px solid #e2e8f0;
}

.admin-recent-header h3 {
    font-size: 14px;
    font-weight: 800;
    color: #0f172a;
    display: flex;
    align-items: center;
    gap: 6px;
}

.admin-view-all-link {
    font-size: 12px;
    font-weight: 700;
    color: #2563eb;
    text-decoration: none;
}

.admin-recent-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
    max-height: 380px;
    overflow-y: auto;
    padding-right: 4px;
}

.admin-product-row {
    display: flex;
    align-items: center;
    gap: 12px;
    background: #ffffff;
    border: 1px solid #e2e8f0;
    border-radius: 12px;
    padding: 10px 14px;
    transition: all 0.2s ease;
}

.admin-product-row:hover {
    border-color: #2563eb;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.08);
}

.admin-product-row-img {
    width: 44px;
    height: 44px;
    border-radius: 8px;
    background: #f8fafc;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    flex-shrink: 0;
    border: 1px solid #e2e8f0;
}

.admin-product-row-img img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

.admin-product-row-img i {
    color: #94a3b8;
    font-size: 20px;
}

.admin-product-row-info {
    flex: 1;
    min-width: 0;
}

.admin-product-row-info .title {
    font-size: 13px;
    font-weight: 700;
    color: #0f172a;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.admin-product-row-info .meta {
    display: flex;
    gap: 10px;
    align-items: center;
    font-size: 11.5px;
    margin-top: 2px;
}

.badge-cat {
    background: #f1f5f9;
    color: #475569;
    padding: 2px 6px;
    border-radius: 4px;
    font-weight: 600;
}

.admin-product-row-info .price {
    font-weight: 800;
    color: #059669;
}

.btn-row-action {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    background: #f1f5f9;
    color: #334155;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    font-size: 12px;
    transition: all 0.2s ease;
}

.btn-row-action:hover {
    background: #2563eb;
    color: #ffffff;
}