/* ========================================
   DASHBOARD - Layout Principal
   ======================================== */

.dashboard-app {
    display: flex;
    min-height: 100vh;
    background: var(--color-gray-50);
}

/* ========================================
   NAVEGACIÓN (Sidebar / Bottom nav)
   ======================================== */

.main-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: white;
    border-top: 1px solid var(--color-gray-200);
    z-index: 100;
    display: flex;
    justify-content: space-around;
    padding: var(--space-2) 0;
    padding-bottom: env(safe-area-inset-bottom, var(--space-2));
}

.nav-brand,
.nav-footer {
    display: none;
}

.nav-items {
    display: flex;
    justify-content: space-around;
    width: 100%;
}

.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-1);
    padding: var(--space-2) var(--space-3);
    color: var(--color-gray-400);
    text-decoration: none;
    font-size: var(--text-xs);
    font-weight: var(--font-medium);
    transition: all var(--transition-fast);
    border-radius: var(--radius-lg);
}

.nav-item svg {
    width: 24px;
    height: 24px;
    stroke-width: 2;
}

.nav-item.active {
    color: var(--color-primary-600);
    background: var(--color-primary-50);
}

.nav-item:active {
    transform: scale(0.95);
}

/* ========================================
   CONTENIDO PRINCIPAL
   ======================================== */

.main-content {
    flex: 1;
    margin-bottom: 70px; /* Espacio para bottom nav */
    display: flex;
    flex-direction: column;
}

.content-header {
    position: sticky;
    top: 0;
    background: white;
    border-bottom: 1px solid var(--color-gray-200);
    padding: var(--space-4);
    display: flex;
    align-items: center;
    gap: var(--space-4);
    z-index: 50;
}

.menu-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border: none;
    background: var(--color-gray-100);
    border-radius: var(--radius-lg);
    color: var(--color-gray-600);
    cursor: pointer;
}

.menu-toggle svg {
    width: 20px;
    height: 20px;
}

.page-title {
    flex: 1;
    font-size: var(--text-xl);
    font-weight: var(--font-bold);
    color: var(--color-gray-900);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.btn-icon {
    position: relative;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    background: transparent;
    color: var(--color-gray-600);
    border-radius: var(--radius-lg);
    cursor: pointer;
}

.btn-icon:hover {
    background: var(--color-gray-100);
}

.btn-icon svg {
    width: 20px;
    height: 20px;
}

.btn-icon .badge {
    position: absolute;
    top: 6px;
    right: 6px;
    width: 16px;
    height: 16px;
    background: var(--color-error-500);
    color: white;
    font-size: 10px;
    font-weight: var(--font-bold);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
}

.user-menu {
    display: none;
}

.content-body {
    flex: 1;
    padding: var(--space-4);
    overflow-y: auto;
}

/* Loading state */
.loading-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 60vh;
    gap: var(--space-4);
    color: var(--color-gray-500);
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--color-gray-200);
    border-top-color: var(--color-primary-500);
    border-radius: var(--radius-full);
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ========================================
   DESKTOP (Sidebar lateral)
   ======================================== */

@media (min-width: 1024px) {
    .main-nav {
        position: fixed;
        top: 0;
        left: 0;
        bottom: 0;
        width: 260px;
        flex-direction: column;
        border-top: none;
        border-right: 1px solid var(--color-gray-200);
        padding: var(--space-6);
        justify-content: flex-start;
    }

    .nav-brand {
        display: flex;
        align-items: center;
        gap: var(--space-3);
        margin-bottom: var(--space-8);
        padding-bottom: var(--space-6);
        border-bottom: 1px solid var(--color-gray-100);
    }

    .logo-mini {
        width: 40px;
        height: 40px;
        background: linear-gradient(135deg, var(--color-primary-500), var(--color-purple-500));
        border-radius: var(--radius-lg);
        display: flex;
        align-items: center;
        justify-content: center;
        font-weight: var(--font-bold);
        color: white;
        font-size: var(--text-lg);
    }

    .brand-text {
        font-size: var(--text-lg);
        font-weight: var(--font-bold);
        color: var(--color-gray-900);
    }

    .nav-items {
        flex-direction: column;
        gap: var(--space-2);
        width: auto;
    }

    .nav-item {
        flex-direction: row;
        padding: var(--space-3) var(--space-4);
        font-size: var(--text-base);
        gap: var(--space-3);
    }

    .nav-item svg {
        width: 20px;
        height: 20px;
    }

    .nav-footer {
        display: block;
        margin-top: auto;
        padding-top: var(--space-6);
        border-top: 1px solid var(--color-gray-100);
    }

    .nav-item.logout {
        width: 100%;
        color: var(--color-error-500);
    }

    .main-content {
        margin-left: 260px;
        margin-bottom: 0;
    }

    .menu-toggle {
        display: none;
    }

    .user-menu {
        display: block;
    }

    .user-trigger {
        display: flex;
        align-items: center;
        gap: var(--space-2);
        padding: var(--space-2);
        border: none;
        background: transparent;
        cursor: pointer;
        border-radius: var(--radius-lg);
    }

    .user-trigger:hover {
        background: var(--color-gray-100);
    }

    .user-avatar {
        width: 32px;
        height: 32px;
        background: var(--color-primary-500);
        border-radius: var(--radius-full);
        display: flex;
        align-items: center;
        justify-content: center;
        color: white;
        font-size: var(--text-sm);
        font-weight: var(--font-semibold);
    }

    .user-name {
        font-size: var(--text-sm);
        font-weight: var(--font-medium);
        color: var(--color-gray-700);
    }

    .user-trigger svg {
        width: 16px;
        height: 16px;
        color: var(--color-gray-400);
    }

    .content-body {
        padding: var(--space-8);
    }
}

/* ========================================
   DASHBOARD COMPONENTS
   ======================================== */

.dashboard-grid {
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
}

/* KPI Cards */
.kpi-section {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-4);
}

.kpi-card {
    background: white;
    border-radius: var(--radius-xl);
    padding: var(--space-4);
    display: flex;
    gap: var(--space-3);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-gray-100);
}

.kpi-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.kpi-icon.ventas { background: var(--color-success-100); color: var(--color-success-600); }
.kpi-icon.ticket { background: var(--color-primary-100); color: var(--color-primary-600); }
.kpi-icon.stock { background: var(--color-error-100); color: var(--color-error-600); }
.kpi-icon.caja { background: var(--color-purple-100); color: var(--color-purple-600); }

.kpi-icon svg {
    width: 24px;
    height: 24px;
}

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

.kpi-content h3 {
    font-size: var(--text-xs);
    font-weight: var(--font-medium);
    color: var(--color-gray-500);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-1);
}

.kpi-value {
    font-size: var(--text-xl);
    font-weight: var(--font-bold);
    color: var(--color-gray-900);
    margin-bottom: var(--space-1);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.kpi-trend {
    font-size: var(--text-xs);
    font-weight: var(--font-medium);
}

.kpi-trend.positive { color: var(--color-success-600); }
.kpi-trend.negative { color: var(--color-error-600); }
.kpi-trend.neutral { color: var(--color-gray-500); }
.kpi-trend.alert { color: var(--color-warning-600); }

/* Acciones rápidas */
.quick-actions {
    background: white;
    border-radius: var(--radius-xl);
    padding: var(--space-5);
    box-shadow: var(--shadow-sm);
}

.quick-actions h2 {
    font-size: var(--text-lg);
    font-weight: var(--font-semibold);
    color: var(--color-gray-900);
    margin-bottom: var(--space-4);
}

.actions-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-3);
}

.action-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-4) var(--space-3);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-xl);
    background: white;
    color: var(--color-gray-700);
    font-size: var(--text-xs);
    font-weight: var(--font-medium);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.action-btn:hover {
    border-color: var(--color-primary-300);
    background: var(--color-primary-50);
    transform: translateY(-2px);
}

.action-btn.primary {
    background: linear-gradient(135deg, var(--color-primary-500), var(--color-primary-600));
    color: white;
    border-color: transparent;
}

.action-btn.primary:hover {
    box-shadow: 0 10px 20px -5px rgba(99, 102, 241, 0.3);
}

.action-btn svg {
    width: 24px;
    height: 24px;
}

/* Gráficos */
.chart-section {
    background: white;
    border-radius: var(--radius-xl);
    padding: var(--space-5);
    box-shadow: var(--shadow-sm);
}

.chart-section h2 {
    font-size: var(--text-lg);
    font-weight: var(--font-semibold);
    color: var(--color-gray-900);
    margin-bottom: var(--space-4);
}

.chart-container {
    height: 250px;
    position: relative;
}

/* Top productos */
.top-products {
    background: white;
    border-radius: var(--radius-xl);
    padding: var(--space-5);
    box-shadow: var(--shadow-sm);
}

.top-products h2 {
    font-size: var(--text-lg);
    font-weight: var(--font-semibold);
    color: var(--color-gray-900);
    margin-bottom: var(--space-4);
}

.products-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.product-item {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3);
    border-radius: var(--radius-lg);
    transition: background var(--transition-fast);
}

.product-item:hover {
    background: var(--color-gray-50);
}

.product-rank {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-gray-100);
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    font-weight: var(--font-bold);
    color: var(--color-gray-600);
}

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

.product-info h4 {
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--color-gray-900);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.product-info span {
    font-size: var(--text-xs);
    color: var(--color-gray-500);
}

.product-amount {
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    color: var(--color-gray-900);
}

.empty-state {
    text-align: center;
    color: var(--color-gray-400);
    padding: var(--space-8);
}

/* Desktop mejoras */
@media (min-width: 1024px) {
    .kpi-section {
        grid-template-columns: repeat(4, 1fr);
    }

    .actions-grid {
        grid-template-columns: repeat(3, minmax(150px, 200px));
        justify-content: start;
    }

    .chart-container {
        height: 300px;
    }

    .dashboard-grid {
        display: grid;
        grid-template-columns: 2fr 1fr;
        grid-template-areas:
            "kpis kpis"
            "actions actions"
            "chart top-products";
        gap: var(--space-6);
    }

    .kpi-section { grid-area: kpis; }
    .quick-actions { grid-area: actions; }
    .chart-section { grid-area: chart; }
    .top-products { grid-area: top-products; }
}