/* ==========================================================================
   ALPICE - POS & Retail Management System
   Diseño de Alta Fidelidad para PC, Tablet y Dispositivos Táctiles
   ========================================================================== */

:root {
    --bg-base: #090d16;
    --bg-surface: #0f172a;
    --bg-surface-elevated: #1e293b;
    --bg-surface-hover: #334155;
    
    --border-color: rgba(255, 255, 255, 0.08);
    --border-highlight: rgba(16, 185, 129, 0.35);
    
    --accent-green: #10b981;
    --accent-green-hover: #059669;
    --accent-green-glow: rgba(16, 185, 129, 0.25);
    
    --accent-gold: #f59e0b;
    --accent-gold-glow: rgba(245, 158, 11, 0.25);
    
    --accent-cyan: #38bdf8;
    --accent-red: #ef4444;
    --accent-purple: #8b5cf6;
    
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    
    --font-main: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.35);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
}

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

body {
    background-color: var(--bg-base);
    color: var(--text-primary);
    font-family: var(--font-main);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    -webkit-font-smoothing: antialiased;
}

/* ==========================================================================
   NAVBAR & HEADER PRINCIPAL DE LA APLICACIÓN
   ========================================================================== */
.alpice-app-header {
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(15px);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    padding: 10px 20px;
}

.alpice-header-container {
    max-width: 1600px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 15px;
}

.alpice-header-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: var(--text-primary);
}

.alpice-header-logo {
    width: 36px;
    height: 36px;
    filter: drop-shadow(0 0 10px rgba(245, 158, 11, 0.4));
}

.alpice-header-title {
    font-size: 1.15rem;
    font-weight: 900;
    letter-spacing: 0.5px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.alpice-header-title span.badge {
    background: linear-gradient(135deg, #f59e0b, #d97706);
    color: #000;
    font-size: 0.65rem;
    font-weight: 900;
    padding: 2px 7px;
    border-radius: 999px;
    text-transform: uppercase;
}

.alpice-nav-tabs {
    display: flex;
    align-items: center;
    gap: 6px;
    list-style: none;
    overflow-x: auto;
    padding-bottom: 2px;
}

.alpice-nav-tabs a {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 14px;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.88rem;
    font-weight: 700;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.alpice-nav-tabs a:hover {
    color: var(--text-primary);
    background: var(--bg-surface-elevated);
}

.alpice-nav-tabs a.active {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.2), rgba(6, 182, 212, 0.2));
    border: 1px solid var(--accent-green);
    color: #34d399;
}

.alpice-header-user {
    display: flex;
    align-items: center;
    gap: 12px;
}

.alpice-user-badge {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--bg-surface-elevated);
    border: 1px solid var(--border-color);
    padding: 5px 12px;
    border-radius: 999px;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.alpice-user-badge strong {
    color: var(--text-primary);
}

.alpice-btn-logout {
    background: rgba(239, 68, 68, 0.15);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: #fca5a5;
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    font-weight: 700;
    text-decoration: none;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.alpice-btn-logout:hover {
    background: #ef4444;
    color: #fff;
}

/* ==========================================================================
   LAYOUT PRINCIPAL DEL POS / CAJA RÁPIDA (DUAL COLUMN FOR PC & TABLET)
   ========================================================================== */
.pos-layout {
    display: grid;
    grid-template-columns: 1fr 430px;
    gap: 18px;
    max-width: 1600px;
    width: 100%;
    margin: 0 auto;
    padding: 16px 20px;
    flex: 1;
    height: calc(100vh - 65px);
    overflow: hidden;
}

/* Columna Izquierda: Catálogo y Buscador */
.pos-catalog-column {
    display: flex;
    flex-direction: column;
    gap: 14px;
    overflow: hidden;
    height: 100%;
}

/* Buscador Rápido */
.pos-search-bar {
    display: flex;
    gap: 10px;
    align-items: center;
    background: var(--bg-surface);
    border: 1.5px solid var(--border-color);
    padding: 6px 14px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
}

.pos-search-bar:focus-within {
    border-color: var(--accent-green);
    box-shadow: 0 0 15px var(--accent-green-glow);
}

.pos-search-bar i.search-icon {
    font-size: 1.2rem;
    color: var(--text-muted);
}

.pos-search-input {
    flex: 1;
    background: transparent;
    border: none;
    outline: none;
    color: var(--text-primary);
    font-size: 1.05rem;
    font-weight: 600;
    padding: 8px 0;
}

.pos-search-input::placeholder {
    color: var(--text-muted);
}

/* Pestañas de Categorías Rápidas */
.pos-category-tabs {
    display: flex;
    gap: 8px;
    overflow-x: auto;
    padding-bottom: 6px;
    scrollbar-width: thin;
}

.pos-cat-pill {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 8px 16px;
    border-radius: 999px;
    font-size: 0.85rem;
    font-weight: 700;
    cursor: pointer;
    white-space: nowrap;
    transition: all 0.2s ease;
    user-select: none;
}

.pos-cat-pill:hover {
    background: var(--bg-surface-elevated);
    color: var(--text-primary);
}

.pos-cat-pill.active {
    background: linear-gradient(135deg, var(--accent-green), var(--accent-green-hover));
    color: #fff;
    border-color: var(--accent-green);
    box-shadow: 0 4px 15px var(--accent-green-glow);
}

/* Cuadrícula de Productos */
.pos-products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(170px, 1fr));
    gap: 12px;
    overflow-y: auto;
    padding-right: 4px;
    flex: 1;
}

.pos-product-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 14px 12px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    cursor: pointer;
    transition: all 0.18s cubic-bezier(0.16, 1, 0.3, 1);
    position: relative;
    user-select: none;
    min-height: 130px;
}

.pos-product-card:hover {
    border-color: var(--accent-green);
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4), 0 0 12px var(--accent-green-glow);
    background: var(--bg-surface-elevated);
}

.pos-product-card:active {
    transform: scale(0.97);
}

.pos-prod-badge-unit {
    position: absolute;
    top: 8px;
    right: 8px;
    font-size: 0.65rem;
    font-weight: 800;
    text-transform: uppercase;
    padding: 2px 6px;
    border-radius: 6px;
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-secondary);
}

.pos-prod-badge-unit.kg {
    background: rgba(16, 185, 129, 0.2);
    color: #34d399;
    border: 1px solid rgba(16, 185, 129, 0.4);
}

.pos-prod-code {
    font-size: 0.72rem;
    font-weight: 700;
    color: var(--text-muted);
    margin-bottom: 4px;
}

.pos-prod-name {
    font-size: 0.95rem;
    font-weight: 800;
    color: var(--text-primary);
    line-height: 1.25;
    margin-bottom: 8px;
}

.pos-prod-bottom {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    margin-top: auto;
}

.pos-prod-price {
    font-size: 1.15rem;
    font-weight: 900;
    color: #34d399;
}

.pos-prod-price small {
    font-size: 0.7rem;
    color: var(--text-muted);
    font-weight: 600;
}

.pos-prod-stock {
    font-size: 0.72rem;
    color: var(--text-muted);
}

.pos-prod-stock.low {
    color: var(--accent-gold);
    font-weight: 700;
}

.pos-prod-stock.empty {
    color: var(--accent-red);
    font-weight: 800;
}

/* ==========================================================================
   COLUMNA DERECHA: TICKET / CAJA ACTIVA
   ========================================================================== */
.pos-ticket-column {
    background: var(--bg-surface);
    border: 1.5px solid var(--border-color);
    border-radius: var(--radius-lg);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    height: 100%;
    box-shadow: var(--shadow-card);
}

.pos-ticket-header {
    padding: 14px 18px;
    background: rgba(30, 41, 59, 0.6);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.pos-ticket-title {
    font-size: 1.05rem;
    font-weight: 800;
    display: flex;
    align-items: center;
    gap: 8px;
}

.pos-ticket-counter {
    background: var(--accent-green);
    color: #000;
    font-size: 0.72rem;
    font-weight: 900;
    padding: 2px 7px;
    border-radius: 999px;
}

.pos-ticket-clear-btn {
    background: transparent;
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: #f87171;
    font-size: 0.75rem;
    font-weight: 700;
    padding: 5px 10px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.2s;
}

.pos-ticket-clear-btn:hover {
    background: var(--accent-red);
    color: #fff;
}

/* Lista de Artículos en el Carrito */
.pos-ticket-items {
    flex: 1;
    overflow-y: auto;
    padding: 10px 12px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.pos-empty-cart {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: var(--text-muted);
    text-align: center;
    padding: 20px;
}

.pos-empty-cart i {
    font-size: 3rem;
    margin-bottom: 12px;
    opacity: 0.3;
}

.pos-ticket-row {
    background: var(--bg-surface-elevated);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 10px 12px;
    display: flex;
    flex-direction: column;
    gap: 6px;
    transition: border-color 0.15s;
}

.pos-ticket-row:hover {
    border-color: rgba(255, 255, 255, 0.15);
}

.pos-row-top {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 8px;
}

.pos-row-name {
    font-size: 0.9rem;
    font-weight: 800;
    color: var(--text-primary);
}

.pos-row-delete {
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 0.95rem;
    padding: 2px 4px;
    transition: color 0.15s;
}

.pos-row-delete:hover {
    color: var(--accent-red);
}

.pos-row-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.pos-qty-controls {
    display: flex;
    align-items: center;
    gap: 6px;
}

.pos-qty-btn {
    width: 28px;
    height: 28px;
    border-radius: 6px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    font-size: 0.9rem;
    font-weight: 900;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.15s;
}

.pos-qty-btn:hover {
    background: var(--accent-green);
    color: #000;
}

.pos-qty-input {
    width: 58px;
    height: 28px;
    background: var(--bg-base);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 0.88rem;
    font-weight: 800;
    text-align: center;
    outline: none;
}

.pos-qty-unit {
    font-size: 0.72rem;
    color: var(--text-muted);
    font-weight: 700;
}

.pos-row-subtotal {
    font-size: 1.05rem;
    font-weight: 900;
    color: #34d399;
}

/* Panel Inferior: Totales y Botones de Cobro */
.pos-ticket-footer {
    background: rgba(15, 23, 42, 0.95);
    border-top: 2px solid var(--border-color);
    padding: 16px 18px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.pos-total-display {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
}

.pos-total-label {
    font-size: 1.05rem;
    font-weight: 800;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.pos-total-amount {
    font-size: 2.2rem;
    font-weight: 900;
    color: #34d399;
    letter-spacing: -0.02em;
    text-shadow: 0 0 20px var(--accent-green-glow);
}

.pos-pay-btn-main {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    border: none;
    color: #fff;
    font-size: 1.2rem;
    font-weight: 900;
    padding: 16px 20px;
    border-radius: var(--radius-md);
    cursor: pointer;
    box-shadow: 0 4px 25px var(--accent-green-glow);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.pos-pay-btn-main:hover {
    background: linear-gradient(135deg, #34d399 0%, #10b981 100%);
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(16, 185, 129, 0.5);
}

.pos-pay-btn-main:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

/* Atajos Rápidos de Pago */
.pos-quick-methods {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 6px;
}

.pos-quick-pay-btn {
    background: var(--bg-surface-elevated);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 8px 6px;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 700;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    transition: all 0.15s;
}

.pos-quick-pay-btn:hover {
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-primary);
}

.pos-quick-pay-btn i {
    font-size: 1rem;
    color: var(--accent-cyan);
}

/* ==========================================================================
   MODAL DE COBRO (CÁLCULO DE VUELTO & MÉTODOS DE PAGO)
   ========================================================================== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.75);
    backdrop-filter: blur(8px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: 15px;
}

.modal-overlay.active {
    display: flex;
}

.modal-content-card {
    background: var(--bg-surface);
    border: 1.5px solid var(--border-color);
    border-radius: var(--radius-xl);
    width: 100%;
    max-width: 520px;
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.8), 0 0 30px rgba(16, 185, 129, 0.15);
    overflow: hidden;
    animation: alpiceModalEnter 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes alpiceModalEnter {
    from { transform: scale(0.92); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
}

.modal-header {
    padding: 18px 24px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: rgba(30, 41, 59, 0.4);
}

.modal-title {
    font-size: 1.25rem;
    font-weight: 800;
    display: flex;
    align-items: center;
    gap: 10px;
}

.modal-close-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 1.3rem;
    cursor: pointer;
    transition: color 0.15s;
}

.modal-close-btn:hover {
    color: var(--text-primary);
}

.modal-body {
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.modal-method-selector {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
}

.method-btn {
    background: var(--bg-surface-elevated);
    border: 1.5px solid var(--border-color);
    color: var(--text-secondary);
    padding: 12px 8px;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 800;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    transition: all 0.15s;
}

.method-btn.active {
    background: rgba(16, 185, 129, 0.15);
    border-color: var(--accent-green);
    color: #34d399;
}

.method-btn i {
    font-size: 1.3rem;
}

.pay-amount-box {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.pay-amount-label {
    font-size: 0.82rem;
    font-weight: 700;
    color: var(--text-secondary);
}

.pay-amount-input {
    background: var(--bg-base);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 12px 16px;
    font-size: 1.8rem;
    font-weight: 900;
    color: #34d399;
    text-align: right;
    outline: none;
    transition: border-color 0.2s;
}

.pay-amount-input:focus {
    border-color: var(--accent-green);
    box-shadow: 0 0 15px var(--accent-green-glow);
}

/* Pastillas de billetes comunes para pago rápido en efectivo */
.cash-chips-row {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}

.cash-chip {
    background: var(--bg-surface-elevated);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 6px 12px;
    border-radius: 999px;
    font-size: 0.8rem;
    font-weight: 800;
    cursor: pointer;
    transition: all 0.15s;
}

.cash-chip:hover {
    background: rgba(16, 185, 129, 0.2);
    border-color: var(--accent-green);
    color: #34d399;
}

.change-result-box {
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.3);
    padding: 14px 18px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.change-label {
    font-size: 0.95rem;
    font-weight: 800;
    color: #34d399;
}

.change-amount {
    font-size: 1.6rem;
    font-weight: 900;
    color: #34d399;
}

.modal-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--border-color);
    display: flex;
    gap: 12px;
    background: rgba(30, 41, 59, 0.4);
}

.btn-modal-cancel {
    flex: 1;
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 12px;
    border-radius: var(--radius-md);
    font-size: 0.95rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.15s;
}

.btn-modal-cancel:hover {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
}

.btn-modal-confirm {
    flex: 2;
    background: linear-gradient(135deg, var(--accent-green), var(--accent-green-hover));
    border: none;
    color: #fff;
    padding: 12px;
    border-radius: var(--radius-md);
    font-size: 1.05rem;
    font-weight: 900;
    cursor: pointer;
    box-shadow: 0 4px 15px var(--accent-green-glow);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: all 0.2s;
}

.btn-modal-confirm:hover {
    filter: brightness(1.1);
    transform: translateY(-2px);
}

/* ==========================================================================
   TICKET DIGITAL & VENTANA DE IMPRESIÓN
   ========================================================================== */
.ticket-print-wrap {
    background: #fff;
    color: #000;
    font-family: 'Courier New', Courier, monospace;
    padding: 20px;
    border-radius: 8px;
    max-width: 320px;
    margin: 0 auto;
    font-size: 13px;
    line-height: 1.35;
}

.ticket-print-wrap h2 {
    font-size: 16px;
    text-align: center;
    margin-bottom: 4px;
}

.ticket-print-wrap .ticket-center {
    text-align: center;
}

.ticket-divider {
    border-top: 1px dashed #000;
    margin: 8px 0;
}

.ticket-row {
    display: flex;
    justify-content: space-between;
}

/* ==========================================================================
   VISTAS DE GESTIÓN: INVENTARIO, VENTAS, ESTADÍSTICAS
   ========================================================================== */
.admin-container {
    max-width: 1500px;
    width: 100%;
    margin: 0 auto;
    padding: 24px 20px 60px 20px;
    flex: 1;
}

.admin-page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 15px;
    margin-bottom: 24px;
    flex-wrap: wrap;
}

.admin-page-title {
    font-size: 1.8rem;
    font-weight: 900;
    display: flex;
    align-items: center;
    gap: 10px;
}

.admin-actions-bar {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.btn-primary-action {
    background: linear-gradient(135deg, var(--accent-green), var(--accent-green-hover));
    color: #fff;
    border: none;
    padding: 10px 18px;
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    font-weight: 800;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    transition: all 0.2s;
    box-shadow: 0 4px 15px var(--accent-green-glow);
}

.btn-primary-action:hover {
    filter: brightness(1.1);
    transform: translateY(-2px);
}

.btn-secondary-action {
    background: var(--bg-surface-elevated);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    padding: 10px 16px;
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    font-weight: 700;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    transition: all 0.15s;
}

.btn-secondary-action:hover {
    background: rgba(255, 255, 255, 0.08);
}

/* Tarjetas de Métricas Estadísticas (KPIs) */
.kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 16px;
    margin-bottom: 28px;
}

.kpi-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 16px;
    box-shadow: var(--shadow-card);
}

.kpi-icon-wrap {
    width: 52px;
    height: 52px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.kpi-icon-green { background: rgba(16, 185, 129, 0.15); color: #34d399; }
.kpi-icon-gold { background: rgba(245, 158, 11, 0.15); color: #fbbf24; }
.kpi-icon-cyan { background: rgba(56, 189, 248, 0.15); color: #38bdf8; }
.kpi-icon-purple { background: rgba(139, 92, 246, 0.15); color: #a78bfa; }

.kpi-data {
    display: flex;
    flex-direction: column;
}

.kpi-label {
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.kpi-value {
    font-size: 1.7rem;
    font-weight: 900;
    color: var(--text-primary);
    line-height: 1.2;
    margin-top: 4px;
}

/* Tabla Estilizada para Inventario y Ventas */
.table-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-card);
}

.table-responsive {
    width: 100%;
    overflow-x: auto;
}

.alpice-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}

.alpice-table th {
    background: rgba(30, 41, 59, 0.6);
    color: var(--text-secondary);
    font-size: 0.78rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 14px 16px;
    border-bottom: 1px solid var(--border-color);
}

.alpice-table td {
    padding: 14px 16px;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.9rem;
    color: var(--text-primary);
}

.alpice-table tbody tr:hover {
    background: rgba(255, 255, 255, 0.02);
}

/* Badges de Estado de Stock */
.stock-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.75rem;
    font-weight: 800;
    padding: 4px 10px;
    border-radius: 999px;
}

.stock-badge.ok {
    background: rgba(16, 185, 129, 0.15);
    color: #34d399;
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.stock-badge.low {
    background: rgba(245, 158, 11, 0.15);
    color: #fbbf24;
    border: 1px solid rgba(245, 158, 11, 0.3);
}

.stock-badge.empty {
    background: rgba(239, 68, 68, 0.15);
    color: #f87171;
    border: 1px solid rgba(239, 68, 68, 0.3);
}

/* ==========================================================================
   PANTALLA DE LOGIN
   ========================================================================== */
.login-screen-wrap {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    background: radial-gradient(circle at 50% 20%, rgba(16, 185, 129, 0.12) 0%, rgba(15, 23, 42, 0.98) 70%);
}

.login-card {
    background: var(--bg-surface);
    border: 1.5px solid var(--border-color);
    border-radius: var(--radius-xl);
    width: 100%;
    max-width: 440px;
    padding: 40px 32px;
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.8), 0 0 35px var(--accent-green-glow);
    text-align: center;
}

.login-logo {
    width: 72px;
    height: 72px;
    margin: 0 auto 16px auto;
    filter: drop-shadow(0 0 15px rgba(245, 158, 11, 0.5));
}

.login-title {
    font-size: 1.8rem;
    font-weight: 900;
    margin-bottom: 6px;
}

.login-subtitle {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 26px;
}

.login-form {
    display: flex;
    flex-direction: column;
    gap: 16px;
    text-align: left;
}

.login-input-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.login-input-group label {
    font-size: 0.82rem;
    font-weight: 700;
    color: var(--text-secondary);
}

.login-input {
    background: var(--bg-base);
    border: 1.5px solid var(--border-color);
    color: var(--text-primary);
    padding: 12px 14px;
    border-radius: var(--radius-md);
    font-size: 1rem;
    outline: none;
    transition: all 0.2s;
}

.login-input:focus {
    border-color: var(--accent-green);
    box-shadow: 0 0 15px var(--accent-green-glow);
}

.btn-login-submit {
    background: linear-gradient(135deg, var(--accent-green), var(--accent-green-hover));
    border: none;
    color: #fff;
    padding: 14px;
    border-radius: var(--radius-md);
    font-size: 1.05rem;
    font-weight: 900;
    cursor: pointer;
    margin-top: 8px;
    box-shadow: 0 4px 20px var(--accent-green-glow);
    transition: all 0.2s;
}

.btn-login-submit:hover {
    filter: brightness(1.1);
    transform: translateY(-2px);
}

.login-demo-helper {
    margin-top: 24px;
    padding: 12px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px dashed var(--border-color);
    border-radius: var(--radius-md);
    font-size: 0.8rem;
    color: var(--text-muted);
}

.login-demo-helper strong {
    color: var(--accent-gold);
}

/* ==========================================================================
   ADAPTATIVIDAD / RESPONSIVE (TABLETS & MÓVILES)
   ========================================================================== */
@media (max-width: 1024px) {
    .pos-layout {
        grid-template-columns: 1fr 380px;
        gap: 12px;
        padding: 10px 14px;
    }

    .pos-products-grid {
        grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    }
}

@media (max-width: 768px) {
    .pos-layout {
        display: flex;
        flex-direction: column;
        height: auto;
        overflow: visible;
        padding: 10px;
    }

    .pos-ticket-column {
        height: 550px;
    }

    .alpice-header-container {
        flex-direction: column;
        align-items: flex-start;
    }

    .alpice-nav-tabs {
        width: 100%;
    }
}