/* ============================================================
   ESTRUCTURA UNIFICADA DE PAGINAS
   Inventario TX
   ============================================================
   Layout comun para todas las paginas del sistema:
   - app-header: barra superior con marca y navegacion
   - app-main: contenedor principal de contenido
   - panel: tarjeta reutilizable con header y body
   - app-footer: pie de pagina unificado
   - page-header: titulo de pagina con descripcion
   ============================================================ */

/* ── BODY BASE ─────────────────────────────────────────── */
body {
    font-family: var(--font-family);
    background: var(--color-bg);
    color: var(--color-text);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    -webkit-font-smoothing: antialiased;
    line-height: 1.6;
}

/* ── HEADER UNIFICADO ──────────────────────────────────── */
.app-header {
    background: var(--color-header);
    color: var(--color-header-text);
    padding: 0;
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
    transition: box-shadow var(--transition-normal);
}

.app-header.scrolled {
    box-shadow: var(--shadow-lg);
}

.app-header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.25rem;
    height: 60px;
}

.app-header-brand {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    text-decoration: none;
    color: var(--color-header-text);
    font-size: var(--font-size-lg);
    font-weight: 700;
    letter-spacing: -0.3px;
    transition: all var(--transition-fast);
    border-radius: var(--radius-md);
    padding: 0.25rem 0.5rem;
    margin: -0.25rem -0.5rem;
}

.app-header-brand i {
    font-size: 1.3rem;
    color: var(--color-primary);
    transition: transform var(--transition-bounce);
}

.app-header-brand:hover {
    color: white;
    background: rgba(255, 255, 255, 0.08);
}

.app-header-brand:hover i {
    transform: rotate(-8deg) scale(1.1);
}

.app-header-nav {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.app-header-link {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.5rem 0.875rem;
    border-radius: var(--radius-md);
    color: rgba(255, 255, 255, 0.75);
    text-decoration: none;
    font-size: var(--font-size-sm);
    font-weight: 500;
    transition: all var(--transition-fast);
    position: relative;
}

.app-header-link::after {
    content: '';
    position: absolute;
    bottom: 4px;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--color-primary);
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
    transform: translateX(-50%);
}

.app-header-link:hover {
    background: rgba(255, 255, 255, 0.10);
    color: white;
}

.app-header-link:hover::after {
    width: calc(100% - 1.75rem);
}

.app-header-link.activo {
    background: rgba(255, 255, 255, 0.15);
    color: white;
}

.app-header-link.activo::after {
    width: calc(100% - 1.75rem);
}

.app-header-link i {
    transition: transform var(--transition-fast);
}

.app-header-link:hover i {
    transform: scale(1.15);
}

/* ── CONTENIDO PRINCIPAL ───────────────────────────────── */
.app-main {
    flex: 1;
    padding: var(--space-xl) 0;
    animation: aparecer var(--transition-normal) both;
}

.app-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.25rem;
}

/* ── TITULO DE PAGINA ──────────────────────────────────── */
.page-header {
    margin-bottom: var(--space-xl);
    padding-bottom: var(--space-md);
    border-bottom: 2px solid var(--color-border);
    animation: deslizar-entrada var(--transition-normal) both;
}

.page-title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--color-text-heading);
    margin: 0 0 0.25rem 0;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.page-title i {
    color: var(--color-primary);
    transition: transform var(--transition-bounce);
}

.page-title:hover i {
    transform: rotate(-5deg) scale(1.1);
}

.page-subtitle {
    color: var(--color-muted);
    font-size: var(--font-size-base);
    margin: 0;
    padding-left: 2.5rem;
}

/* ── PANEL (TARJETA REUTILIZABLE) ──────────────────────── */
.panel {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    border: 1px solid var(--color-border);
    transition:
        box-shadow var(--transition-normal),
        transform var(--transition-normal),
        border-color var(--transition-fast);
    animation: deslizar-entrada var(--transition-normal) both;
}

.panel:hover {
    box-shadow: var(--shadow-md);
    border-color: rgba(59, 130, 246, 0.3);
}

.panel-header {
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--color-bg);
    transition: background var(--transition-fast);
}

.panel-header h5 {
    margin: 0;
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--color-text-heading);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.panel-header h5 i {
    color: var(--color-primary);
    font-size: 1rem;
}

.panel-body {
    padding: 1.25rem;
}

.panel-footer {
    padding: 1rem 1.25rem;
    background: var(--color-bg);
    border-top: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 0.75rem;
}

/* Panel con accent lateral */
.panel-accent {
    border-left: 4px solid var(--color-primary);
}

.panel-accent.success {
    border-left-color: var(--color-esmeralda);
}

.panel-accent.danger {
    border-left-color: var(--color-rubi);
}

.panel-accent.warning {
    border-left-color: var(--color-warning);
}

/* ── FOOTER UNIFICADO ──────────────────────────────────── */
.app-footer {
    background: var(--color-header);
    color: var(--color-muted);
    text-align: center;
    padding: 1rem 1.25rem;
    font-size: var(--font-size-xs);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.app-footer span {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
}

.app-footer i {
    color: var(--color-rubi);
    animation: pulso 2s ease-in-out infinite;
}

/* ── TARJETA DE ESTADISTICA ────────────────────────────── */
.stat-card {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    padding: 1.25rem;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    gap: 1rem;
    transition:
        all var(--transition-normal),
        transform var(--transition-bounce);
    height: 100%;
    cursor: default;
}

.stat-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-card-hover);
    border-color: var(--color-primary);
}

.stat-card:hover .stat-icon {
    transform: scale(1.05);
}

.stat-icon {
    width: 52px;
    height: 52px;
    min-width: 52px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    color: white;
    transition: transform var(--transition-bounce);
}

.stat-icon i {
    transition: transform var(--transition-fast);
}

.stat-card:hover .stat-icon i {
    transform: scale(1.1);
}

.stat-content {
    min-width: 0;
}

.stat-value {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--color-text-heading);
    line-height: 1.2;
    transition: all var(--transition-fast);
}

.stat-card:hover .stat-value {
    color: var(--color-primary);
}

.stat-label {
    font-size: var(--font-size-xs);
    color: var(--color-muted);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.4px;
}

/* Stat card con animation de entrada escalonada */
.stat-card:nth-child(1) { animation-delay: 0.05s; }
.stat-card:nth-child(2) { animation-delay: 0.10s; }
.stat-card:nth-child(3) { animation-delay: 0.15s; }
.stat-card:nth-child(4) { animation-delay: 0.20s; }

/* ── DASHBOARD CARDS ──────────────────────────────────── */
.dashboard-card {
    background: var(--color-surface);
    border-radius: var(--radius-xl);
    padding: 1.5rem;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border);
    text-decoration: none;
    color: inherit;
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    transition:
        all var(--transition-normal),
        transform var(--transition-bounce);
    position: relative;
    overflow: hidden;
}

.dashboard-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-normal);
}

.dashboard-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-card-hover);
    border-color: transparent;
}

.dashboard-card:hover::before {
    transform: scaleX(1);
}

.dashboard-card.card-ventas::before { background: var(--gradient-confirmar); }
.dashboard-card.card-registro::before { background: var(--gradient-primary); }
.dashboard-card.card-reportes::before { background: var(--gradient-warning); }
.dashboard-card.card-consulta::before { background: var(--gradient-info); }
.dashboard-card.card-servicios::before { background: linear-gradient(135deg, #7c3aed 0%, #6d28d9 100%); }
.dashboard-card.card-caja::before { background: var(--gradient-confirmar); }
.dashboard-card.card-proveedores::before { background: linear-gradient(135deg, #0891b2 0%, #0e7490 100%); }

.dashboard-icon {
    width: 56px;
    height: 56px;
    min-width: 56px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
    transition: transform var(--transition-bounce);
}

.card-ventas .dashboard-icon { background: var(--gradient-confirmar); }
.card-registro .dashboard-icon { background: var(--gradient-primary); }
.card-reportes .dashboard-icon { background: var(--gradient-warning); }
.card-consulta .dashboard-icon { background: var(--gradient-info); }
.card-servicios .dashboard-icon { background: linear-gradient(135deg, #7c3aed 0%, #6d28d9 100%); }
.card-caja .dashboard-icon { background: var(--gradient-confirmar); }
.card-proveedores .dashboard-icon { background: linear-gradient(135deg, #0891b2 0%, #0e7490 100%); }

.dashboard-card:hover .dashboard-icon {
    transform: rotate(-5deg) scale(1.1);
}

.dashboard-content {
    flex: 1;
    min-width: 0;
}

.dashboard-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-text-heading);
    margin: 0 0 0.25rem 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.dashboard-title i {
    opacity: 0;
    transform: translateX(-10px);
    transition: all var(--transition-fast);
}

.dashboard-card:hover .dashboard-title i {
    opacity: 1;
    transform: translateX(0);
}

.dashboard-subtitle {
    font-size: var(--font-size-sm);
    color: var(--color-muted);
    margin: 0;
}

/* ── ESTADOS VACIOS ────────────────────────────────────── */
.empty-state {
    text-align: center;
    padding: 3rem 1.5rem;
    color: var(--color-muted);
}

.empty-state i {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    opacity: 0.25;
    animation: rebotar 2s ease-in-out infinite;
}

.empty-state p {
    font-size: var(--font-size-sm);
    max-width: 320px;
    margin: 0 auto;
    line-height: 1.5;
}

/* Empty state con icono diferente */
.empty-state.success i {
    color: var(--color-esmeralda);
    opacity: 0.4;
}

.empty-state.warning i {
    color: var(--color-warning);
    opacity: 0.4;
}

.empty-state.danger i {
    color: var(--color-rubi);
    opacity: 0.4;
}

/* ── ALERTA DE ERROR (FORMULARIOS) ─────────────────────── */
.alert-error {
    background: var(--color-rubi-light);
    color: var(--color-rubi);
    border: 1px solid rgba(225, 29, 72, 0.3);
    border-radius: var(--radius-md);
    padding: 0.75rem 1.25rem;
    font-size: var(--font-size-sm);
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    animation: deslizar-entrada var(--transition-normal) both;
}

.alert-error i {
    font-size: 1rem;
    animation: sacudir 0.4s ease;
}

/* Alerta de exito inline */
.alert-success {
    background: var(--color-esmeralda-light);
    color: var(--color-esmeralda);
    border: 1px solid rgba(5, 150, 105, 0.3);
    border-radius: var(--radius-md);
    padding: 0.75rem 1.25rem;
    font-size: var(--font-size-sm);
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    animation: deslizar-entrada var(--transition-normal) both;
}

/* ── FORMS ─────────────────────────────────────────────── */
.form-control,
.form-select {
    transition:
        border-color var(--transition-fast),
        box-shadow var(--transition-fast),
        background var(--transition-fast);
}

.form-control:focus,
.form-select:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
    background: white;
}

.form-control.is-invalid {
    border-color: var(--color-rubi);
    box-shadow: 0 0 0 3px rgba(225, 29, 72, 0.15);
}

.form-control.is-valid {
    border-color: var(--color-esmeralda);
    box-shadow: 0 0 0 3px rgba(5, 150, 105, 0.15);
}

.form-label {
    font-weight: 500;
    color: var(--color-text-heading);
    margin-bottom: 0.375rem;
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.form-label .required {
    color: var(--color-rubi);
}

/* Input con icono izquierdo */
.input-icon-wrapper {
    position: relative;
}

.input-icon-wrapper i {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-muted);
    transition: color var(--transition-fast);
}

.input-icon-wrapper .form-control {
    padding-left: 2.5rem;
}

.input-icon-wrapper:focus-within i {
    color: var(--color-primary);
}

/* ── SEARCH BOX ────────────────────────────────────────── */
.search-box {
    position: relative;
    display: flex;
    align-items: center;
}

.search-box i {
    position: absolute;
    left: 14px;
    color: var(--color-muted);
    font-size: 0.9rem;
    transition: all var(--transition-fast);
}

.search-box input {
    padding-left: 2.75rem;
    border-radius: var(--radius-full);
}

.search-box:focus-within i {
    color: var(--color-primary);
    transform: scale(1.1);
}

/* ── FILTROS ─────────────────────────────────────────────── */
.filter-section {
    background: var(--color-bg);
    border-radius: var(--radius-md);
    padding: 1rem;
    margin-bottom: var(--space-md);
}

.filter-group {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.filter-label {
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--color-muted);
    text-transform: uppercase;
    letter-spacing: 0.4px;
    min-width: 60px;
}

/* ── TABLA ─────────────────────────────────────────────── */
.lista-tabla {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
}

.lista-tabla thead th {
    background: var(--color-bg);
    padding: 0.875rem 1rem;
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--color-muted);
    text-transform: uppercase;
    letter-spacing: 0.4px;
    border-bottom: 2px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 10;
}

.lista-tabla tbody tr {
    transition: all var(--transition-fast);
}

.lista-tabla tbody tr:hover {
    background: var(--color-bg);
}

.lista-tabla tbody td {
    padding: 0.875rem 1rem;
    border-bottom: 1px solid var(--color-border);
    vertical-align: middle;
}

.lista-tabla tbody tr:last-child td {
    border-bottom: none;
}

/* Tabla con hover en filas */
.lista-tabla.tabla-hover tbody tr:hover {
    background: var(--color-primary-light);
}

/* Tabla con zebra striping */
.lista-tabla.tabla-zebra tbody tr:nth-child(even) {
    background: var(--color-bg);
}

/* ── CARRITO / LISTA DE COMPRA ─────────────────────────── */
.cart-item {
    display: flex;
    align-items: center;
    gap: 0.875rem;
    padding: 0.875rem;
    background: var(--color-surface);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    transition: all var(--transition-fast);
    animation: deslizar-entrada var(--transition-normal) both;
}

.cart-item:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-sm);
}

.cart-item-image {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    object-fit: cover;
    background: var(--color-bg);
}

.cart-item-info {
    flex: 1;
    min-width: 0;
}

.cart-item-name {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-text-heading);
    margin: 0 0 0.125rem 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.cart-item-price {
    font-size: var(--font-size-xs);
    color: var(--color-esmeralda);
    font-weight: 600;
}

.cart-item-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* Quantity selector */
.qty-control {
    display: inline-flex;
    align-items: center;
    background: var(--color-bg);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    overflow: hidden;
}

.qty-control button {
    width: 32px;
    height: 32px;
    border: none;
    background: transparent;
    color: var(--color-muted);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.qty-control button:hover {
    background: var(--color-primary);
    color: white;
}

.qty-control button:active {
    transform: scale(0.9);
}

.qty-control input {
    width: 40px;
    text-align: center;
    border: none;
    background: transparent;
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-text-heading);
    -moz-appearance: textfield;
}

.qty-control input::-webkit-outer-spin-button,
.qty-control input::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

/* ── RESPONSIVE ────────────────────────────────────────── */
@media (max-width: 768px) {
    .app-header-inner {
        padding: 0 1rem;
        height: 54px;
    }

    .app-header-brand span {
        font-size: var(--font-size-base);
    }

    .app-header-link {
        padding: 0.375rem 0.625rem;
        font-size: var(--font-size-xs);
    }

    .app-container {
        padding: 0 1rem;
    }

    .app-main {
        padding: var(--space-md) 0;
    }

    .page-title {
        font-size: var(--font-size-2xl);
    }

    .stat-card {
        padding: 1rem;
        gap: 0.75rem;
    }

    .stat-icon {
        width: 44px;
        height: 44px;
        min-width: 44px;
        font-size: 1rem;
    }

    .stat-value {
        font-size: var(--font-size-xl);
    }

    .dashboard-card {
        padding: 1.25rem;
    }

    .dashboard-icon {
        width: 48px;
        height: 48px;
        min-width: 48px;
        font-size: 1.25rem;
    }
}

@media (max-width: 576px) {
    .app-header-inner {
        height: 50px;
    }

    .app-header-brand span {
        display: none;
    }

    .app-header-nav {
        gap: 0;
    }

    .panel-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.75rem;
    }

    .panel-body {
        padding: 1rem;
    }

    .page-subtitle {
        padding-left: 0;
    }

    .dashboard-card {
        flex-direction: column;
        text-align: center;
    }

    .dashboard-icon {
        width: 52px;
        height: 52px;
        margin: 0 auto;
    }

    .dashboard-title {
        justify-content: center;
    }

    .dashboard-title i {
        display: none;
    }
}