/* ============================================================================
   ERP Gestión Pro - Sistema de Diseño
   Dark Theme con Glassmorphism
   © 2025 Desarrollado por repositorIA
   ============================================================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

/* ============================================================================
   1. VARIABLES CSS (Design Tokens)
   ============================================================================ */
:root {
    /* Colores principales */
    --bg-primary: #0f0f1a;
    --bg-secondary: #1a1a2e;
    --bg-tertiary: #16213e;
    --bg-card: rgba(26, 26, 46, 0.8);
    --bg-card-hover: rgba(30, 30, 55, 0.9);
    --bg-glass: rgba(255, 255, 255, 0.05);
    --bg-glass-hover: rgba(255, 255, 255, 0.08);

    /* Colores de acento */
    --accent-blue: #4361ee;
    --accent-blue-light: #5a7bff;
    --accent-blue-dark: #3451d1;
    --accent-green: #06d6a0;
    --accent-green-dark: #05b88a;
    --accent-red: #ef476f;
    --accent-red-dark: #d63d62;
    --accent-yellow: #ffd166;
    --accent-purple: #7209b7;
    --accent-purple-light: #9b4dca;
    --accent-orange: #f77f00;
    --accent-cyan: #118ab2;

    /* Texto */
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --text-tertiary: rgba(255, 255, 255, 0.4);
    --text-accent: var(--accent-blue-light);

    /* Bordes */
    --border-color: rgba(255, 255, 255, 0.08);
    --border-active: rgba(67, 97, 238, 0.5);

    /* Sombras */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.4);
    --shadow-glow: 0 0 20px rgba(67, 97, 238, 0.2);

    /* Glassmorphism */
    --glass-bg: rgba(255, 255, 255, 0.03);
    --glass-border: rgba(255, 255, 255, 0.08);
    --glass-blur: blur(20px);

    /* Bordes redondeados */
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;

    /* Transiciones */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.25s ease;
    --transition-slow: 0.4s ease;

    /* Sidebar */
    --sidebar-width: 260px;
    --sidebar-collapsed: 70px;
    --header-height: 65px;

    /* Tipografía */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

/* ============================================================================
   2. RESET Y BASE
   ============================================================================ */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 14px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(ellipse at 10% 20%, rgba(67, 97, 238, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 90% 80%, rgba(114, 9, 183, 0.06) 0%, transparent 50%);
    pointer-events: none;
    z-index: 0;
}

a { color: var(--accent-blue-light); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ============================================================================
   3. LAYOUT PRINCIPAL
   ============================================================================ */
.app-container {
    display: flex;
    min-height: 100vh;
    position: relative;
    z-index: 1;
}

/* ============================================================================
   4. SIDEBAR
   ============================================================================ */
.sidebar {
    width: var(--sidebar-width);
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    z-index: 100;
    transition: width var(--transition-normal);
}

.sidebar-logo {
    padding: 20px 24px;
    display: flex;
    align-items: center;
    gap: 12px;
    border-bottom: 1px solid var(--border-color);
    height: var(--header-height);
}

.sidebar-logo .logo-icon {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    flex-shrink: 0;
}

.sidebar-logo h1 {
    font-size: 1.15rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--text-primary), var(--accent-blue-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    white-space: nowrap;
}

.sidebar-nav {
    flex: 1;
    padding: 16px 12px;
    overflow-y: auto;
}

.nav-section-title {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--text-tertiary);
    padding: 12px 12px 8px;
    font-weight: 600;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 11px 16px;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
    margin-bottom: 2px;
    font-weight: 500;
    position: relative;
    user-select: none;
}

.nav-item:hover {
    background: var(--bg-glass-hover);
    color: var(--text-primary);
}

.nav-item.active {
    background: linear-gradient(135deg, rgba(67, 97, 238, 0.2), rgba(67, 97, 238, 0.1));
    color: var(--accent-blue-light);
    border: 1px solid rgba(67, 97, 238, 0.3);
}

.nav-item.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 60%;
    background: var(--accent-blue);
    border-radius: 0 3px 3px 0;
}

.nav-item .icon {
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    flex-shrink: 0;
}

.nav-item .badge {
    margin-left: auto;
    background: var(--accent-red);
    color: white;
    font-size: 0.7rem;
    padding: 2px 7px;
    border-radius: 10px;
    font-weight: 600;
}

/* ============================================================================
   5. CONTENIDO PRINCIPAL
   ============================================================================ */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* Header */
.top-header {
    height: var(--header-height);
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 28px;
    position: sticky;
    top: 0;
    z-index: 50;
    backdrop-filter: var(--glass-blur);
}

.header-left {
    display: flex;
    align-items: center;
    gap: 20px;
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-tertiary);
    font-size: 0.85rem;
}

.breadcrumb .separator { opacity: 0.4; }

.breadcrumb .current {
    color: var(--text-primary);
    font-weight: 600;
}

.header-search {
    position: relative;
    width: 320px;
}

.header-search input {
    width: 100%;
    padding: 9px 16px 9px 40px;
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    color: var(--text-primary);
    font-size: 0.85rem;
    font-family: var(--font-family);
    transition: all var(--transition-fast);
}

.header-search input:focus {
    outline: none;
    border-color: var(--accent-blue);
    background: var(--bg-glass-hover);
    box-shadow: var(--shadow-glow);
}

.header-search .search-icon {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-tertiary);
}

.header-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

.header-icon-btn {
    width: 38px;
    height: 38px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    background: var(--bg-glass);
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
    position: relative;
    font-size: 1.1rem;
}

.header-icon-btn:hover {
    background: var(--bg-glass-hover);
    color: var(--text-primary);
    border-color: var(--border-active);
}

.header-icon-btn .notification-dot {
    position: absolute;
    top: 6px;
    right: 6px;
    width: 8px;
    height: 8px;
    background: var(--accent-red);
    border-radius: 50%;
    border: 2px solid var(--bg-secondary);
}

.user-menu {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 6px 12px;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background var(--transition-fast);
}

.user-menu:hover { background: var(--bg-glass-hover); }

.user-avatar {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.8rem;
}

.user-info {
    display: flex;
    flex-direction: column;
}

.user-info .name {
    font-weight: 600;
    font-size: 0.85rem;
}

.user-info .role {
    font-size: 0.7rem;
    color: var(--text-tertiary);
}

/* Área de contenido */
.content-area {
    flex: 1;
    padding: 28px;
    overflow-y: auto;
}

/* ============================================================================
   6. TARJETAS KPI
   ============================================================================ */
.kpi-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-bottom: 28px;
}

.kpi-card {
    background: var(--bg-card);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 22px;
    backdrop-filter: var(--glass-blur);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.kpi-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.kpi-card.blue::before { background: linear-gradient(90deg, var(--accent-blue), var(--accent-blue-light)); }
.kpi-card.green::before { background: linear-gradient(90deg, var(--accent-green), #2ee89e); }
.kpi-card.red::before { background: linear-gradient(90deg, var(--accent-red), #ff6b8a); }
.kpi-card.purple::before { background: linear-gradient(90deg, var(--accent-purple), var(--accent-purple-light)); }

.kpi-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
    border-color: var(--border-active);
}

.kpi-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.kpi-title {
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.kpi-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

.kpi-icon.blue { background: rgba(67, 97, 238, 0.15); color: var(--accent-blue-light); }
.kpi-icon.green { background: rgba(6, 214, 160, 0.15); color: var(--accent-green); }
.kpi-icon.red { background: rgba(239, 71, 111, 0.15); color: var(--accent-red); }
.kpi-icon.purple { background: rgba(114, 9, 183, 0.15); color: var(--accent-purple-light); }

.kpi-value {
    font-size: 1.8rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    margin-bottom: 6px;
}

.kpi-change {
    font-size: 0.78rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 4px;
}

.kpi-change.positive { color: var(--accent-green); }
.kpi-change.negative { color: var(--accent-red); }

/* ============================================================================
   7. GRÁFICOS Y PANELES
   ============================================================================ */
.charts-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 20px;
    margin-bottom: 28px;
}

.chart-card {
    background: var(--bg-card);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 22px;
    backdrop-filter: var(--glass-blur);
}

.chart-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.chart-card-title {
    font-size: 1rem;
    font-weight: 600;
}

.chart-area {
    width: 100%;
    height: 250px;
    position: relative;
}

/* ============================================================================
   8. TABLAS
   ============================================================================ */
.table-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 28px;
}

.data-table-container {
    background: var(--bg-card);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 22px;
    backdrop-filter: var(--glass-blur);
    overflow: hidden;
}

.table-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.table-title {
    font-size: 1rem;
    font-weight: 600;
}

.data-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
}

.data-table thead th {
    text-align: left;
    padding: 10px 14px;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-tertiary);
    font-weight: 600;
    border-bottom: 1px solid var(--border-color);
    white-space: nowrap;
}

.data-table tbody td {
    padding: 12px 14px;
    font-size: 0.85rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.03);
    color: var(--text-secondary);
}

.data-table tbody tr {
    transition: background var(--transition-fast);
    cursor: pointer;
}

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

.data-table tbody tr:hover td {
    color: var(--text-primary);
}

/* ============================================================================
   9. BADGES Y ESTADOS
   ============================================================================ */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 0.72rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.badge-success { background: rgba(6, 214, 160, 0.15); color: var(--accent-green); }
.badge-warning { background: rgba(255, 209, 102, 0.15); color: var(--accent-yellow); }
.badge-danger { background: rgba(239, 71, 111, 0.15); color: var(--accent-red); }
.badge-info { background: rgba(67, 97, 238, 0.15); color: var(--accent-blue-light); }
.badge-purple { background: rgba(114, 9, 183, 0.15); color: var(--accent-purple-light); }

/* ============================================================================
   10. BOTONES
   ============================================================================ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    border-radius: var(--radius-md);
    font-size: 0.85rem;
    font-weight: 600;
    font-family: var(--font-family);
    cursor: pointer;
    transition: all var(--transition-fast);
    border: none;
    white-space: nowrap;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-blue-dark));
    color: white;
    box-shadow: 0 4px 15px rgba(67, 97, 238, 0.3);
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(67, 97, 238, 0.4);
}

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

.btn-outline:hover {
    background: var(--bg-glass-hover);
    color: var(--text-primary);
    border-color: var(--border-active);
}

.btn-success {
    background: linear-gradient(135deg, var(--accent-green), var(--accent-green-dark));
    color: white;
}

.btn-danger {
    background: transparent;
    color: var(--accent-red);
    border: 1px solid rgba(239, 71, 111, 0.3);
}

.btn-danger:hover {
    background: rgba(239, 71, 111, 0.1);
}

.btn-lg {
    padding: 14px 28px;
    font-size: 1rem;
}

.btn-sm {
    padding: 6px 12px;
    font-size: 0.78rem;
}

.btn-block {
    width: 100%;
    justify-content: center;
}

/* ============================================================================
   11. FORMULARIOS
   ============================================================================ */
.form-group {
    margin-bottom: 16px;
}

.form-label {
    display: block;
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 6px;
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.form-input,
.form-select {
    width: 100%;
    padding: 10px 14px;
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 0.9rem;
    font-family: var(--font-family);
    transition: all var(--transition-fast);
}

.form-input:focus,
.form-select:focus {
    outline: none;
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 3px rgba(67, 97, 238, 0.15);
}

.form-input::placeholder {
    color: var(--text-tertiary);
}

.form-select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='rgba(255,255,255,0.4)' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 36px;
}

/* Toggle Switch */
.toggle-switch {
    position: relative;
    width: 44px;
    height: 24px;
    display: inline-block;
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-slider {
    position: absolute;
    cursor: pointer;
    inset: 0;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 24px;
    transition: var(--transition-fast);
}

.toggle-slider::before {
    content: '';
    position: absolute;
    height: 18px;
    width: 18px;
    left: 3px;
    bottom: 3px;
    background: white;
    border-radius: 50%;
    transition: var(--transition-fast);
}

.toggle-switch input:checked + .toggle-slider {
    background: var(--accent-green);
}

.toggle-switch input:checked + .toggle-slider::before {
    transform: translateX(20px);
}

/* ============================================================================
   12. MÓDULO FACTURACIÓN (POS)
   ============================================================================ */
.pos-layout {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 24px;
    height: calc(100vh - var(--header-height) - 56px);
}

.pos-left, .pos-right {
    display: flex;
    flex-direction: column;
    gap: 16px;
    overflow-y: auto;
}

.pos-search-bar {
    background: var(--bg-card);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 16px;
}

.pos-search-bar input {
    width: 100%;
    padding: 12px 16px 12px 44px;
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 1rem;
    font-family: var(--font-family);
}

.pos-search-bar input:focus {
    outline: none;
    border-color: var(--accent-blue);
    box-shadow: var(--shadow-glow);
}

.keyboard-hints {
    display: flex;
    gap: 12px;
    margin-top: 10px;
}

.kbd {
    background: rgba(67, 97, 238, 0.15);
    color: var(--accent-blue-light);
    padding: 3px 8px;
    border-radius: 4px;
    font-size: 0.72rem;
    font-weight: 600;
    font-family: var(--font-family);
}

.pos-totals {
    background: var(--bg-card);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 16px 20px;
}

.total-row {
    display: flex;
    justify-content: space-between;
    padding: 6px 0;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.total-row.grand-total {
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--text-primary);
    border-top: 1px solid var(--border-color);
    padding-top: 12px;
    margin-top: 6px;
}

/* Tarjeta de datos del comprador */
.buyer-card, .invoice-type-card, .payment-card {
    background: var(--bg-card);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 18px;
}

.card-title {
    font-size: 0.9rem;
    font-weight: 700;
    margin-bottom: 14px;
    display: flex;
    align-items: center;
    gap: 8px;
}

/* Radio buttons para tipo de factura */
.radio-group {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.radio-option {
    flex: 1;
    min-width: 80px;
}

.radio-option input { display: none; }

.radio-option label {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    font-weight: 600;
    font-size: 0.85rem;
    transition: all var(--transition-fast);
    color: var(--text-secondary);
}

.radio-option input:checked + label {
    border-color: var(--accent-blue);
    background: rgba(67, 97, 238, 0.15);
    color: var(--accent-blue-light);
}

/* Payment method buttons */
.payment-methods {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
}

.payment-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    padding: 12px 8px;
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    color: var(--text-secondary);
    font-size: 0.75rem;
    font-weight: 600;
    font-family: var(--font-family);
}

.payment-btn:hover {
    background: var(--bg-glass-hover);
    color: var(--text-primary);
}

.payment-btn.active {
    border-color: var(--accent-blue);
    background: rgba(67, 97, 238, 0.15);
    color: var(--accent-blue-light);
}

.payment-btn .pay-icon {
    font-size: 1.3rem;
}

/* ============================================================================
   13. MÓDULO INVENTARIO
   ============================================================================ */
.inventory-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    flex-wrap: wrap;
    gap: 12px;
}

.inventory-filters {
    display: flex;
    gap: 10px;
    flex: 1;
    flex-wrap: wrap;
}

.inventory-filters .form-input,
.inventory-filters .form-select {
    max-width: 220px;
}

.stock-badge {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 0.72rem;
    font-weight: 600;
}

.stock-badge.normal { background: rgba(6, 214, 160, 0.12); color: var(--accent-green); }
.stock-badge.bajo { background: rgba(255, 209, 102, 0.12); color: var(--accent-yellow); }
.stock-badge.critico { background: rgba(239, 71, 111, 0.12); color: var(--accent-red); }
.stock-badge.sin-stock { background: rgba(239, 71, 111, 0.2); color: #ff8a9e; }

.stock-badge::before {
    content: '';
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: currentColor;
}

/* ============================================================================
   14. MÓDULO PROVEEDORES
   ============================================================================ */
.suppliers-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
    gap: 20px;
}

.supplier-card {
    background: var(--bg-card);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 22px;
    backdrop-filter: var(--glass-blur);
    transition: all var(--transition-normal);
}

.supplier-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
    border-color: var(--border-active);
}

.supplier-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 14px;
}

.supplier-name {
    font-size: 1.05rem;
    font-weight: 700;
}

.supplier-cuit {
    font-size: 0.8rem;
    color: var(--text-tertiary);
    margin-top: 4px;
}

.supplier-details {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin: 14px 0;
}

.supplier-detail-row {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.82rem;
    color: var(--text-secondary);
}

.supplier-detail-row .detail-icon {
    color: var(--text-tertiary);
    width: 16px;
    text-align: center;
}

.supplier-stats {
    display: flex;
    gap: 16px;
    padding-top: 14px;
    border-top: 1px solid var(--border-color);
    margin-top: 14px;
}

.supplier-stat {
    text-align: center;
    flex: 1;
}

.supplier-stat-value {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--accent-blue-light);
}

.supplier-stat-label {
    font-size: 0.7rem;
    color: var(--text-tertiary);
    margin-top: 2px;
}

/* ============================================================================
   15. MODALES
   ============================================================================ */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    animation: fadeIn 0.2s ease;
}

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

.modal {
    background: var(--bg-secondary);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    width: 100%;
    max-width: 560px;
    max-height: 90vh;
    overflow-y: auto;
    animation: slideUp 0.3s ease;
}

.modal-header {
    padding: 22px 24px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-title {
    font-size: 1.15rem;
    font-weight: 700;
}

.modal-close {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-sm);
    border: none;
    background: var(--bg-glass);
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    transition: all var(--transition-fast);
}

.modal-close:hover {
    background: rgba(239, 71, 111, 0.15);
    color: var(--accent-red);
}

.modal-body { padding: 24px; }
.modal-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: 10px;
}

/* ============================================================================
   16. FOOTER
   ============================================================================ */
.app-footer {
    text-align: center;
    padding: 16px;
    color: var(--text-tertiary);
    font-size: 0.75rem;
    border-top: 1px solid var(--border-color);
}

/* ============================================================================
   17. ANIMACIONES
   ============================================================================ */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

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

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.animate-in {
    animation: slideUp 0.4s ease;
}

/* ============================================================================
   18. RESPONSIVE
   ============================================================================ */
@media (max-width: 1200px) {
    .kpi-grid { grid-template-columns: repeat(2, 1fr); }
    .charts-grid { grid-template-columns: 1fr; }
    .table-grid { grid-template-columns: 1fr; }
    .pos-layout { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    .sidebar { width: var(--sidebar-collapsed); }
    .sidebar-logo h1, .nav-item span, .nav-section-title { display: none; }
    .main-content { margin-left: var(--sidebar-collapsed); }
    .kpi-grid { grid-template-columns: 1fr; }
    .suppliers-grid { grid-template-columns: 1fr; }
}

/* ============================================================================
   19. TABS
   ============================================================================ */
.tabs {
    display: flex;
    gap: 0;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 24px;
}

.tab {
    padding: 12px 24px;
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--text-tertiary);
    cursor: pointer;
    border-bottom: 2px solid transparent;
    transition: all var(--transition-fast);
    font-family: var(--font-family);
    background: none;
    border-top: none;
    border-left: none;
    border-right: none;
}

.tab:hover {
    color: var(--text-primary);
}

.tab.active {
    color: var(--accent-blue-light);
    border-bottom-color: var(--accent-blue);
}

/* ============================================================================
   20. SCROLLBAR PERSONALIZADO
   ============================================================================ */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(255, 255, 255, 0.1); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: rgba(255, 255, 255, 0.2); }

/* ============================================================================
   21. CHART CANVAS PLACEHOLDER
   ============================================================================ */
.chart-canvas {
    width: 100%;
    height: 100%;
    border-radius: var(--radius-md);
}

/* ============================================================================
   22. PAGINATION
   ============================================================================ */
.pagination {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
    margin-top: 16px;
}

.pagination-info {
    font-size: 0.82rem;
    color: var(--text-tertiary);
}

.pagination-controls {
    display: flex;
    gap: 4px;
}

.page-btn {
    width: 34px;
    height: 34px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    background: var(--bg-glass);
    color: var(--text-secondary);
    font-size: 0.82rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    font-family: var(--font-family);
}

.page-btn:hover { background: var(--bg-glass-hover); color: var(--text-primary); }
.page-btn.active {
    background: var(--accent-blue);
    border-color: var(--accent-blue);
    color: white;
}

/* ============================================================================
   23. STATUS INDICATOR
   ============================================================================ */
.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    display: inline-block;
    margin-right: 6px;
}

.status-dot.online { background: var(--accent-green); box-shadow: 0 0 6px var(--accent-green); }
.status-dot.offline { background: var(--accent-red); }
.status-dot.warning { background: var(--accent-yellow); }

/* Config cards */
.config-card {
    background: var(--bg-card);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 22px;
    margin-bottom: 20px;
}

.config-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.03);
}

.config-row:last-child { border-bottom: none; }

.config-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.config-value {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-primary);
}

/* Notification toast */
.toast {
    position: fixed;
    bottom: 24px;
    right: 24px;
    padding: 14px 24px;
    border-radius: var(--radius-lg);
    background: var(--bg-secondary);
    border: 1px solid var(--glass-border);
    box-shadow: var(--shadow-lg);
    color: var(--text-primary);
    font-size: 0.85rem;
    font-weight: 500;
    z-index: 2000;
    animation: slideUp 0.3s ease;
    display: flex;
    align-items: center;
    gap: 10px;
    max-width: 400px;
}

.toast.success { border-left: 4px solid var(--accent-green); }
.toast.error { border-left: 4px solid var(--accent-red); }
.toast.info { border-left: 4px solid var(--accent-blue); }