/* =========================================
   BUSINESS CONTROL - DESIGN SYSTEM UNIFIED 3.0
   Sistema de diseño completo y consistente
   Psicología: Confianza, Limpieza, Eficiencia
   ========================================= */

/* Importar Tipografía Inter */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

/* === VARIABLES GLOBALES === */
:root {
    /* PALETA DE COLORES PRINCIPAL */
    --primary: #2563EB;                    /* Blue 600 */
    --primary-hover: #1D4ED8;              /* Blue 700 */
    --primary-light: #EFF6FF;              /* Blue 50 */
    --primary-gradient: linear-gradient(135deg, #2563EB 0%, #1E40AF 100%);

    /* ACENTO DE MARCA — reservado para momentos de identidad (logo, hero, CTA
       principal en paginas publicas). No se usa en UI funcional del dashboard
       ni reemplaza los colores de estado (success/warning/danger). */
    --accent: #B15A3E;                     /* Terracota */
    --accent-hover: #8F4630;
    --accent-light: #F5E6DE;               /* Terracota 50 */

    /* COLORES DE TEXTO */
    --text-main: #1E293B;                  /* Slate 800 */
    --text-muted: #64748B;                 /* Slate 500 */
    --text-light: #94A3B8;                 /* Slate 400 */
    --dark: #0F172A;                       /* Slate 900 */
    
    /* COLORES DE ESTADOS */
    --success: #10B981;                    /* Emerald */
    --success-bg: #D1FAE5;                 /* Emerald 50 */
    --warning: #F59E0B;                    /* Amber */
    --warning-bg: #FEF3C7;                 /* Amber 50 */
    --danger: #EF4444;                     /* Red */
    --danger-bg: #FEE2E2;                  /* Red 50 */
    --info: #3B82F6;                       /* Blue 500 */
    --info-bg: #EFF6FF;                    /* Blue 50 */
    
    /* FONDOS */
    --bg-body: #F8FAFC;                    /* Gris muy suave */
    --bg-card: #FFFFFF;
    --bg-section: #F1F5F9;                /* Slate 100 */
    
    /* BORDES Y SOMBRAS */
    --border-color: #E2E8F0;              /* Slate 200 */
    --border-light: #F1F5F9;               /* Slate 100 */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-card: 0 4px 6px -1px rgb(0 0 0 / 0.05), 0 2px 4px -2px rgb(0 0 0 / 0.05);
    --shadow-hover: 0 10px 15px -3px rgb(0 0 0 / 0.08), 0 4px 6px -4px rgb(0 0 0 / 0.08);
    --shadow-lg: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    
    /* BORDES REDONDEADOS */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 50%;
    
    /* TRANSICIONES */
    --transition-fast: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* ESPACIADO */
    --spacing-xs: 0.25rem;    /* 4px */
    --spacing-sm: 0.5rem;     /* 8px */
    --spacing-md: 1rem;       /* 16px */
    --spacing-lg: 1.5rem;     /* 24px */
    --spacing-xl: 2rem;       /* 32px */
    --spacing-2xl: 3rem;      /* 48px */
    
    /* TIPOGRAFÍA */
    --font-family: 'Inter', system-ui, -apple-system, sans-serif;
    --font-size-xs: 0.75rem;  /* 12px */
    --font-size-sm: 0.875rem; /* 14px */
    --font-size-base: 1rem;   /* 16px */
    --font-size-lg: 1.125rem;  /* 18px */
    --font-size-xl: 1.25rem;   /* 20px */
    --font-size-2xl: 1.5rem;   /* 24px */
    --font-size-3xl: 1.875rem; /* 30px */
    
    /* BOOTSTRAP OVERRIDES */
    --bs-primary: var(--primary);
    --bs-primary-rgb: 37, 99, 235;
    --bs-body-font-family: var(--font-family);
    --bs-body-bg: var(--bg-body);
    --bs-body-color: var(--text-main);
}

/* === RESET Y BASE === */
* {
    box-sizing: border-box;
}

img {
    max-width: 100%;
    height: auto;
}

body {
    font-family: var(--font-family);
    background-color: var(--bg-body);
    color: var(--text-main);
    line-height: 1.6;
    margin: 0;
    padding: 0;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* === MOTOR DE LAYOUT === */
.page-wrapper {
    flex: 1 0 auto;
    display: flex;
    flex-direction: column;
    width: 100%;
    position: relative;
}

.content-container {
    flex: 1 0 auto;
    padding: var(--spacing-xl) 0;
}

.container-custom {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

@media (min-width: 768px) {
    .container-custom {
        padding: 0 var(--spacing-lg);
    }
}

/* === COMPONENTES: TARJETAS === */
.card, .stat-card, .quick-action-card {
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-card);
    border-radius: var(--radius-lg);
    transition: var(--transition);
    background: var(--bg-card);
    overflow: hidden;
}

.card:hover, .stat-card:hover, .quick-action-card:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-2px);
}

.stat-card {
    padding: var(--spacing-lg);
    border-left: 4px solid var(--primary);
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.stat-card.success {
    border-left-color: var(--success);
}

.stat-card.warning {
    border-left-color: var(--warning);
}

.stat-card.danger {
    border-left-color: var(--danger);
}

.stat-card.info {
    border-left-color: var(--info);
}

.stat-card h3 {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--text-main);
    margin: 0;
    line-height: 1.2;
}

.stat-card p {
    color: var(--text-muted);
    font-size: var(--font-size-sm);
    font-weight: 500;
    margin: 0;
}

.stat-card .small {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
}

/* === HEADER UNIFICADO === */
.page-header {
    background: var(--bg-card);
    border-bottom: 1px solid var(--border-color);
    padding: var(--spacing-lg) 0;
    margin-bottom: var(--spacing-xl);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-lg);
}

.header-title h1 {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--text-main);
    margin: 0;
    line-height: 1.2;
}

.header-title p {
    color: var(--text-muted);
    margin: var(--spacing-xs) 0 0 0;
    font-size: var(--font-size-sm);
}

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

.user-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.user-avatar {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    background: var(--primary-gradient);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: var(--font-size-sm);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.user-avatar:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-card);
}

.user-details {
    text-align: right;
}

.user-name {
    font-weight: 600;
    color: var(--text-main);
    font-size: var(--font-size-sm);
    margin: 0;
}

.user-role {
    color: var(--text-muted);
    font-size: var(--font-size-xs);
    margin: 0;
    text-transform: capitalize;
}

/* === HEADER INLINE (Alternativa al sticky para páginas internas) === */
.page-header-inline {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
    box-shadow: var(--shadow-sm);
}

/* === BOTONES UNIFICADOS === */
.btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: var(--font-size-sm);
    transition: var(--transition);
    border: none;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    text-decoration: none;
    position: relative;
    overflow: hidden;
}

.btn:before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: var(--transition);
}

.btn:hover:before {
    left: 100%;
}

.btn-primary {
    background: var(--primary-gradient);
    color: white;
    box-shadow: 0 4px 14px 0 rgba(37, 99, 235, 0.3);
}

.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 6px 20px 0 rgba(37, 99, 235, 0.4);
}

.btn-success {
    background: var(--success);
    color: white;
    box-shadow: 0 4px 14px 0 rgba(16, 185, 129, 0.3);
}

.btn-success:hover {
    background: #059669;
    transform: translateY(-1px);
}

.btn-danger {
    background: var(--danger);
    color: white;
    box-shadow: 0 4px 14px 0 rgba(239, 68, 68, 0.3);
}

.btn-danger:hover {
    background: #DC2626;
    transform: translateY(-1px);
}

.btn-warning {
    background: var(--warning);
    color: white;
    box-shadow: 0 4px 14px 0 rgba(245, 158, 11, 0.3);
}

.btn-warning:hover {
    background: #D97706;
    transform: translateY(-1px);
}

.btn-outline-secondary {
    background: transparent;
    color: var(--text-muted);
    border: 1px solid var(--border-color);
}

.btn-outline-secondary:hover {
    background: var(--bg-section);
    color: var(--text-main);
    border-color: var(--text-muted);
}

.btn-sm {
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: var(--font-size-xs);
}

.btn-lg {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-lg);
}

/* === STOCK BADGES === */
.stock-badge {
    padding: 0.35em 0.8em;
    font-size: 0.75em;
    font-weight: 700;
    border-radius: 50rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.stock-low { 
    background-color: var(--danger-bg); 
    color: var(--danger); 
    border: 1px solid var(--danger);
}

.stock-medium { 
    background-color: var(--warning-bg); 
    color: var(--warning); 
    border: 1px solid var(--warning);
}

.stock-high { 
    background-color: var(--success-bg); 
    color: var(--success); 
    border: 1px solid var(--success);
}

/* === ROLES BADGES === */
.role-badge {
    font-size: var(--font-size-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-weight: 600;
    text-transform: capitalize;
}

.role-admin { 
    background: linear-gradient(135deg, #EF4444, #DC2626); 
    color: white; 
}

.role-cajero { 
    background: linear-gradient(135deg, #10B981, #059669); 
    color: white; 
}

.role-cobrador { 
    background: linear-gradient(135deg, #8B5CF6, #7C3AED); 
    color: white; 
}

.role-supervisor { 
    background: linear-gradient(135deg, #F59E0B, #D97706); 
    color: white; 
}

/* === TABLAS === */
.table-container {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.table {
    margin: 0;
    font-size: var(--font-size-sm);
}

.table thead th {
    background: var(--bg-section);
    color: var(--text-main);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-size: var(--font-size-xs);
    border: none;
    padding: var(--spacing-lg) var(--spacing-md);
}

.table tbody td {
    padding: var(--spacing-md);
    vertical-align: middle;
    border-color: var(--border-light);
}

.table tbody tr:hover {
    background: var(--bg-section);
}

/* === FORMULARIOS === */
.form-control, .form-select {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-sm);
    transition: var(--transition);
    background: var(--bg-card);
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
    outline: none;
}

.form-label {
    font-weight: 600;
    color: var(--text-main);
    margin-bottom: var(--spacing-xs);
    font-size: var(--font-size-sm);
}

.input-group {
    border-radius: var(--radius-md);
    overflow: hidden;
}

.input-group-text {
    background: var(--bg-section);
    border: 1px solid var(--border-color);
    color: var(--text-muted);
}

/* === AUTENTICACIÓN === */
.auth-wrapper {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--bg-body) 0%, var(--bg-section) 100%);
    padding: var(--spacing-md);
}

.auth-card {
    width: 100%;
    max-width: 420px;
    background: var(--bg-card);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
    backdrop-filter: blur(10px);
}

.auth-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.auth-icon-circle {
    width: 64px;
    height: 64px;
    border-radius: var(--radius-full);
    background: var(--primary-light);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-xl);
    margin: 0 auto var(--spacing-md);
}

/* === WELCOME CARD === */
.welcome-card {
    background: var(--primary-gradient);
    color: white;
    position: relative;
    overflow: hidden;
    border: none;
}

.welcome-card .card-body {
    position: relative;
    z-index: 2;
}

.welcome-deco-1, .welcome-deco-2 {
    position: absolute;
    border-radius: var(--radius-full);
    background: rgba(255, 255, 255, 0.1);
    pointer-events: none;
    z-index: 1;
}

.welcome-deco-1 {
    width: 250px;
    height: 250px;
    top: -50px;
    right: -50px;
}

.welcome-deco-2 {
    width: 180px;
    height: 180px;
    bottom: -40px;
    left: -40px;
}

.welcome-deco-1-size {
    width: 250px;
    height: 250px;
}

.welcome-deco-2-size {
    width: 180px;
    height: 180px;
}

/* === FORMULARIO DE VENTAS === */
.product-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--bg-section);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-sm);
    border: 1px solid var(--border-light);
    transition: var(--transition);
    flex-wrap: wrap;
}

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

.product-info {
    flex: 1;
}

.product-select {
    min-width: 200px;
    flex: 1 1 200px;
}

.quantity-input {
    width: 130px;
    flex: 0 1 130px;
}

.product-price {
    font-weight: 600;
    color: var(--primary);
    font-size: var(--font-size-lg);
    min-width: 100px;
    text-align: right;
}

.remove-product {
    transition: var(--transition);
}

.remove-product:hover {
    transform: scale(1.1);
}

.sale-summary {
    background: var(--bg-section);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    border: 1px solid var(--border-light);
    margin-top: var(--spacing-lg);
}

.summary-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--border-light);
}

.summary-item:last-child {
    border-bottom: none;
}

.summary-item.total {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--primary);
    margin-top: var(--spacing-sm);
    padding-top: var(--spacing-md);
    border-top: 2px solid var(--primary);
}

.barcode-scanner {
    background: var(--primary-light);
    border: 2px dashed var(--primary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    text-align: center;
    margin-bottom: var(--spacing-lg);
    transition: var(--transition);
}

.barcode-scanner:focus-within {
    border-color: var(--primary-hover);
    background: var(--bg-card);
    box-shadow: var(--shadow-sm);
}

#barcodeScannerInput {
    border: none;
    background: transparent;
    text-align: center;
    font-size: var(--font-size-lg);
    font-weight: 600;
}

#barcodeScannerInput:focus {
    outline: none;
}

.credit-details {
    background: var(--warning-bg);
    border-left: 4px solid var(--warning);
    border-radius: var(--radius-sm);
}

.btn-submit {
    background: var(--primary-gradient);
    border: none;
    padding: var(--spacing-md) var(--spacing-xl);
    font-weight: 600;
    font-size: var(--font-size-lg);
    border-radius: var(--radius-lg);
    transition: var(--transition);
}

.btn-submit:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}

/* === QUICK ACTION CARDS === */
.quick-action-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--spacing-lg);
    text-decoration: none;
    color: var(--text-main);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    transition: var(--transition);
    height: 100%;
    min-height: 120px;
    justify-content: center;
}

.quick-action-card:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-2px);
    border-color: var(--primary);
    text-decoration: none;
    color: var(--text-main);
}

.quick-action-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-lg);
    background: var(--primary-light);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-sm);
    transition: var(--transition);
}

.quick-action-card:hover .quick-action-icon {
    background: var(--primary);
    color: white;
    transform: scale(1.05);
}

/* === ICONOS Y CONTENEDORES ESPECÍFICOS === */
.icon-box {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-lg);
}

.icon-box.bg-primary {
    background: var(--primary-light);
    color: var(--primary);
}

.icon-box.bg-success {
    background: var(--success-bg);
    color: var(--success);
}

.icon-box.bg-warning {
    background: var(--warning-bg);
    color: var(--warning);
}

.icon-box.bg-danger {
    background: var(--danger-bg);
    color: var(--danger);
}

.icon-box.bg-info {
    background: var(--info-bg);
    color: var(--info);
}

/* === CONTENEDORES FLEXIBLES === */
.flex-grow-1 {
    flex-grow: 1;
}

.d-flex {
    display: flex;
}

.align-items-start {
    align-items: flex-start;
}

.align-items-center {
    align-items: center;
}

.justify-content-between {
    justify-content: space-between;
}

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

.text-start {
    text-align: left;
}

.text-center {
    text-align: center;
}

.text-end {
    text-align: right;
}

/* === BADGES Y ETIQUETAS === */
.badge {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: var(--font-size-xs);
    font-weight: 600;
    border-radius: var(--radius-full);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.badge-primary {
    background: var(--primary-light);
    color: var(--primary);
}

.badge-success {
    background: var(--success-bg);
    color: var(--success);
}

.badge-warning {
    background: var(--warning-bg);
    color: var(--warning);
}

.badge-danger {
    background: var(--danger-bg);
    color: var(--danger);
}

.badge-info {
    background: var(--info-bg);
    color: var(--info);
}

/* === UTILIDADES DE TEXTO === */
.fw-bold {
    font-weight: 700 !important;
}

.fw-medium {
    font-weight: 500 !important;
}

.text-muted {
    color: var(--text-muted) !important;
}

.text-primary {
    color: var(--primary) !important;
}

.text-success {
    color: var(--success) !important;
}

.text-warning {
    color: var(--warning) !important;
}

.text-danger {
    color: var(--danger) !important;
}

.text-white {
    color: white !important;
}

.text-shadow-sm {
    text-shadow: 0 1px 2px rgba(0,0,0,0.3);
}

/* === ESPACIADO === */
.mb-0 { margin-bottom: 0 !important; }
.mb-1 { margin-bottom: var(--spacing-xs) !important; }
.mb-2 { margin-bottom: var(--spacing-sm) !important; }
.mb-3 { margin-bottom: var(--spacing-md) !important; }
.mb-4 { margin-bottom: var(--spacing-lg) !important; }

.ms-1 { margin-left: var(--spacing-xs) !important; }
.ms-2 { margin-left: var(--spacing-sm) !important; }
.ms-3 { margin-left: var(--spacing-md) !important; }

.me-1 { margin-right: var(--spacing-xs) !important; }
.me-2 { margin-right: var(--spacing-sm) !important; }
.me-3 { margin-right: var(--spacing-md) !important; }

.p-0 { padding: 0 !important; }
.p-2 { padding: var(--spacing-sm) !important; }
.p-4 { padding: var(--spacing-md) !important; }

/* === FOOTER UNIFICADO === */
.main-footer {
    background: var(--bg-card);
    border-top: 2px solid var(--border-color);
    padding: var(--spacing-xl) 0;
    margin-top: auto;
    flex-shrink: 0;
    text-align: center;
    position: relative;
    backdrop-filter: blur(10px);
}

.main-footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--primary-gradient);
    opacity: 0.8;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    flex-wrap: wrap;
}

.footer-links a {
    color: var(--text-muted);
    text-decoration: none;
    transition: var(--transition);
    font-weight: 500;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
}

.footer-links a:hover {
    color: var(--primary);
    background: var(--primary-light);
    transform: translateY(-1px);
}

.footer-text p {
    margin: 0;
    color: var(--text-muted);
    font-size: var(--font-size-sm);
    font-weight: 400;
}

.footer-text strong {
    color: var(--primary);
    font-weight: 600;
}

.footer-text .small {
    font-size: var(--font-size-xs);
    opacity: 0.8;
}

/* === LOADING STATES === */
.loading {
    opacity: 0.6;
    pointer-events: none;
    position: relative;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid var(--primary-light);
    border-top: 2px solid var(--primary);
    border-radius: var(--radius-full);
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* === SKELETON LOADING === */
.skeleton {
    background: linear-gradient(90deg, var(--border-color) 25%, var(--primary-light) 50%, var(--border-color) 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
    border-radius: var(--radius-sm);
}

@keyframes loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* === FOCUS STATES === */
.focus-ring {
    transition: var(--transition);
}

.focus-ring:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
    border-radius: var(--radius-md);
}

/* === RESPONSIVE === */
@media (max-width: 768px) {
    .content-container {
        padding: var(--spacing-lg) 0;
    }
    
    .header-content {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-md);
    }
    
    .header-actions {
        flex-direction: column;
        width: 100%;
    }
    
    .user-info {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-sm);
    }
    
    .user-details {
        text-align: center;
    }
    
    .btn {
        justify-content: center;
        padding: var(--spacing-sm) var(--spacing-lg);
        font-size: var(--font-size-sm);
    }
    
    .btn-block-mobile {
        width: 100%;
    }
    
    .header-actions .btn,
    .auth-card .btn {
        width: 100%;
    }
    
    .card {
        margin-bottom: var(--spacing-md);
    }
    
    .stat-card {
        padding: var(--spacing-md);
        margin-bottom: var(--spacing-md);
    }
    
    .footer-links {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }
    
    body {
        font-size: var(--font-size-sm);
        line-height: 1.5;
    }
    
    .auth-card {
        padding: var(--spacing-lg);
        margin: var(--spacing-md);
        border-radius: var(--radius-lg);
    }
    
    .table-container {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
    
    .table {
        font-size: var(--font-size-xs);
        min-width: 600px;
    }
    
    .table-container {
        position: relative;
    }
    
    .table-container::after {
        content: 'Desliza para ver más →';
        display: block;
        text-align: center;
        font-size: var(--font-size-xs);
        color: var(--text-light);
        padding: var(--spacing-xs);
    }
    
    /* Formulario de ventas mobile */
    .product-item {
        flex-direction: column;
        align-items: stretch;
    }
    
    .product-select {
        min-width: 100%;
        width: 100%;
    }
    
    .quantity-input {
        width: 100%;
        flex: 1 1 100%;
    }
    
    .product-price {
        text-align: left;
        min-width: auto;
    }
    
    .product-item > .d-flex {
        width: 100%;
        flex-wrap: wrap;
    }
    
    /* Cobros - ajustes mobile */
    .btn-action-group {
        flex-direction: column;
    }
    
    .balance-display {
        font-size: 1.2rem;
    }
    
    .modal-content {
        margin: var(--spacing-md);
        border-radius: var(--radius-lg);
    }
    
    .form-control, .form-select {
        font-size: var(--font-size-sm);
        padding: var(--spacing-sm) var(--spacing-md);
        min-height: 44px; /* Touch friendly */
    }
    
    .form-label {
        font-size: var(--font-size-sm);
        margin-bottom: var(--spacing-xs);
        font-weight: 600;
    }
    
    .input-group {
        margin-bottom: var(--spacing-md);
    }
    
    .alert {
        font-size: var(--font-size-sm);
        padding: var(--spacing-md);
        border-radius: var(--radius-md);
        margin-bottom: var(--spacing-md);
    }
    
    /* Ocultar elementos no esenciales en mobile */
    .desktop-only {
        display: none !important;
    }
    
    /* Ajustes específicos para mobile */
    .page-header {
        padding: var(--spacing-lg) var(--spacing-md);
        margin-bottom: var(--spacing-lg);
    }
    
    .header-title h1 {
        font-size: var(--font-size-xl);
        margin-bottom: var(--spacing-xs);
    }
    
    .user-avatar {
        width: 48px;
        height: 48px;
        font-size: var(--font-size-lg);
    }
}

/* === TABLET (768px - 1024px) === */
@media (max-width: 1024px) {
    .container-custom {
        max-width: 960px;
    }
    
    .stat-card h3 {
        font-size: var(--font-size-xl);
    }
    
    .welcome-deco-1,
    .welcome-deco-1-size {
        width: 180px;
        height: 180px;
    }
    
    .welcome-deco-2,
    .welcome-deco-2-size {
        width: 120px;
        height: 120px;
    }
    
    .quick-action-card {
        min-height: 100px;
        padding: var(--spacing-md);
    }
    
    .quick-action-icon {
        width: 40px;
        height: 40px;
        font-size: var(--font-size-lg);
    }
}

@media (max-width: 480px) {
    .container-custom {
        padding: 0 var(--spacing-sm);
    }
    
    .stat-card {
        padding: var(--spacing-sm);
        margin-bottom: var(--spacing-sm);
    }
    
    .header-title h1 {
        font-size: var(--font-size-lg);
    }
    
    .card-body {
        padding: var(--spacing-md);
    }
    
    .btn {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: var(--font-size-xs);
    }
    
    .product-item .d-flex.align-items-center.gap-3 {
        gap: var(--spacing-sm) !important;
    }
    
    .form-control, .form-select {
        min-height: 48px;
        font-size: var(--font-size-sm);
    }
    
    .table {
        font-size: var(--font-size-xs);
        min-width: 500px;
    }
    
    /* Ajustes para pantallas muy pequeñas */
    .col-12 {
        padding-left: var(--spacing-sm);
        padding-right: var(--spacing-sm);
    }
    
    .modal-dialog {
        margin: var(--spacing-sm);
        max-width: 95vw;
    }
    
    .welcome-card {
        margin-bottom: var(--spacing-md);
    }
    
    .welcome-card .card-body {
        padding: var(--spacing-lg);
    }
}

/* === MEJORAS PARA TOUCH === */
@media (hover: none) and (pointer: coarse) {
    .btn, .card, .stat-card {
        min-height: 44px;
        min-width: 44px;
    }
    
    .btn {
        padding: var(--spacing-md) var(--spacing-lg);
    }
    
    .form-control, .form-select {
        min-height: 48px;
        padding: var(--spacing-md);
    }
    
    /* Espaciado extra para facilitar taps */
    .btn, .card, .stat-card {
        margin-bottom: var(--spacing-md);
    }
}

/* === ORIENTACIÓN LANDSCAPE === */
@media (max-width: 768px) and (orientation: landscape) {
    .page-header {
        padding: var(--spacing-md) var(--spacing-sm);
    }
    
    .auth-card {
        margin: var(--spacing-sm);
    }
    
    .modal-dialog {
        margin: var(--spacing-sm) auto;
    }
}

/* === ACCESIBILIDAD MEJORADA === */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .fade-in, .fade-in-up, .slide-in-left, .slide-in-right {
        animation: none;
        opacity: 1;
        transform: none;
    }
}

/* === ANIMACIONES === */
.fade-in { 
    animation: fadeIn 0.5s ease-out forwards; 
    opacity: 0;
}

.fade-in-up { 
    animation: fadeInUp 0.6s ease-out forwards; 
    opacity: 0;
}

.delay-1 {
    animation-delay: 0.1s;
}

.delay-2 {
    animation-delay: 0.2s;
}

.delay-3 {
    animation-delay: 0.3s;
}

.slide-in-left {
    animation: slideInLeft 0.5s ease-out forwards;
    opacity: 0;
}

.slide-in-right {
    animation: slideInRight 0.5s ease-out forwards;
    opacity: 0;
}

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

@keyframes fadeInUp {
    from { 
        opacity: 0;
        transform: translateY(30px);
    }
    to { 
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* === HIGH CONTRAST === */
@media (prefers-contrast: high) {
    :root {
        --primary: #0066CC;
        --text-main: #000000;
        --border-color: #000000;
        --bg-card: #FFFFFF;
        --shadow-card: 0 2px 4px rgba(0,0,0,0.3);
    }
    
    .btn {
        border: 2px solid var(--text-main);
    }
    
    .card, .stat-card {
        border: 2px solid var(--text-main);
    }
}

/* === UTILIDADES === */
.rounded-xl { border-radius: var(--radius-xl) !important; }
.rounded-2xl { border-radius: var(--radius-lg) !important; }
.rounded-3xl { border-radius: var(--radius-xl) !important; }
.shadow-sm { box-shadow: var(--shadow-sm) !important; }
.shadow-xl { box-shadow: var(--shadow-lg) !important; }
.border-start-4 { border-left-width: 4px !important; }
.text-gradient,
.text-gradient-primary {
    background: linear-gradient(120deg, var(--primary) 0%, var(--accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.bg-gradient-primary {
    background: var(--primary-gradient) !important;
}
.bg-gradient-light {
    background: linear-gradient(135deg, var(--bg-section) 0%, var(--bg-card) 100%);
}
.bg-accent-subtle { background-color: var(--accent-light) !important; }
.text-accent { color: var(--accent) !important; }

.btn-accent {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
    box-shadow: 0 4px 14px 0 rgba(177, 90, 62, 0.3);
}
.btn-accent:hover {
    background: var(--accent-hover);
    border-color: var(--accent-hover);
    color: #fff;
    transform: translateY(-1px);
    box-shadow: 0 6px 20px 0 rgba(177, 90, 62, 0.4);
}
.btn-outline-accent {
    border: 2px solid var(--accent);
    color: var(--accent);
    background: transparent;
}
.btn-outline-accent:hover {
    background: var(--accent);
    color: #fff;
}

/* === MARCA (logo) === */
.brand-mark {
    position: relative;
    width: 30px;
    height: 30px;
    border-radius: 9px;
    background: var(--primary);
    color: #fff;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    flex-shrink: 0;
}
.brand-mark::after {
    content: '';
    position: absolute;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--accent);
    bottom: -4px;
    right: -4px;
    border: 2px solid var(--bg-body);
}

/* === LANDING PAGE (hero, tarjetas, micro-interacciones) === */
.hover-lift,
.btn-hover-lift {
    transition: var(--transition);
}
.hover-lift:hover,
.btn-hover-lift:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
}
.hover-white {
    transition: var(--transition-fast);
}
.hover-white:hover {
    color: #fff !important;
}

.hero-section {
    position: relative;
    overflow: hidden;
}
.hero-shape {
    position: absolute;
    border-radius: 50%;
    filter: blur(70px);
    opacity: 0.55;
    z-index: 0;
    pointer-events: none;
}
.hero-shape.shape-1 {
    width: 440px;
    height: 440px;
    background: var(--primary-light);
    top: -140px;
    right: -120px;
}
.hero-shape.shape-2 {
    width: 340px;
    height: 340px;
    background: var(--accent-light);
    bottom: -120px;
    left: -100px;
}
.hero-title {
    letter-spacing: -0.02em;
}
.hero-subtitle {
    max-width: 34rem;
}

.feature-icon-box {
    width: 52px;
    height: 52px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}
.feature-card {
    transition: var(--transition);
}

.glass-card {
    background: rgba(255, 255, 255, 0.72);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border: 1px solid rgba(255, 255, 255, 0.6);
}
[data-theme="dark"] .glass-card {
    background: rgba(30, 41, 59, 0.7);
    border-color: rgba(255, 255, 255, 0.08);
}
.dashboard-preview-card {
    max-width: 420px;
    margin: 0 auto;
}

.floating-anim {
    animation: bc-float 5s ease-in-out infinite;
}
@keyframes bc-float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}
@media (prefers-reduced-motion: reduce) {
    .floating-anim { animation: none; }
}

/* === BOOTSTRAP OVERRIDES === */
.btn, .card, .alert {
    border-radius: var(--radius-md) !important;
}

.form-control, .form-select {
    border-radius: var(--radius-md) !important;
    border: 1px solid var(--border-color) !important;
}

/* === BOTTOM NAVIGATION GLOBAL (Móvil) === */
.app-bottom-nav {
    display: none;
}

@media (max-width: 768px) {
    /* Dar espacio al contenido para que no quede detrás del bottom nav */
    body {
        padding-bottom: 70px;
    }

    .app-bottom-nav {
        display: flex;
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        height: 62px;
        background: var(--bg-card);
        border-top: 1px solid var(--border-color);
        box-shadow: 0 -4px 20px rgba(0,0,0,0.08);
        z-index: 1000;
        align-items: stretch;
        justify-content: space-around;
        padding: 0;
        padding-bottom: env(safe-area-inset-bottom);
    }

    .bottom-nav-item {
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        flex: 1;
        gap: 3px;
        color: var(--text-muted);
        text-decoration: none;
        font-size: 10px;
        font-weight: 500;
        transition: color 0.2s, background 0.2s;
        border-radius: 0;
        padding: 8px 4px 6px;
        position: relative;
    }

    .bottom-nav-item i {
        font-size: 20px;
        line-height: 1;
        transition: transform 0.2s;
    }

    .app-bottom-nav .bottom-nav-item:hover,
    .app-bottom-nav .bottom-nav-item.active {
        color: var(--primary);
        text-decoration: none;
        background: var(--primary-light);
    }

    .app-bottom-nav .bottom-nav-item.active::before {
        content: '';
        position: absolute;
        top: 0;
        left: 20%;
        right: 20%;
        height: 3px;
        background: var(--primary);
        border-radius: 0 0 4px 4px;
    }

    .app-bottom-nav .bottom-nav-item.active i {
        transform: translateY(-1px);
    }

    .bottom-nav-badge {
        position: absolute;
        top: 6px;
        right: calc(50% - 18px);
        background: var(--danger);
        color: white;
        font-size: 9px;
        font-weight: 700;
        width: 16px;
        height: 16px;
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        line-height: 1;
    }

    /* Header compacto en móvil cuando hay bottom nav */
    .page-header {
        padding: var(--spacing-md) 0;
        margin-bottom: var(--spacing-lg);
    }

    .header-title h1 {
        font-size: var(--font-size-lg) !important;
    }

    .header-title p {
        display: none;
    }

    .header-actions {
        gap: var(--spacing-sm);
    }

    .header-actions .btn span {
        display: none;
    }

    .header-actions .btn {
        width: auto !important;
        min-width: 40px;
        padding: var(--spacing-sm);
    }

    .user-details {
        display: none;
    }
}

/* === DARK MODE SUPPORT === */
[data-theme="dark"] {
    --bg-body: #0F172A;
    --bg-card: #1E293B;
    --bg-section: #334155;
    --text-main: #F1F5F9;
    --text-muted: #94A3B8;
    --border-color: #334155;
    --border-light: #475569;
}

[data-theme="dark"] .card,
[data-theme="dark"] .stat-card,
[data-theme="dark"] .quick-action-card,
[data-theme="dark"] .table-container,
[data-theme="dark"] .auth-card {
    background: var(--bg-card);
    border-color: var(--border-color);
    color: var(--text-main);
}

[data-theme="dark"] .form-control,
[data-theme="dark"] .form-select {
    background: var(--bg-section);
    border-color: var(--border-color);
    color: var(--text-main);
}

[data-theme="dark"] .table thead th {
    background: var(--bg-section);
    color: var(--text-main);
}

[data-theme="dark"] .main-footer {
    background: var(--bg-card);
    border-color: var(--border-color);
}