:root {
    /* Colors (Light) */
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --secondary: #f1f5f9;
    --secondary-hover: #e2e8f0;
    --danger: #ef4444;
    --danger-hover: #dc2626;
    --success: #10b981;
    --background: #f8fafc;
    --surface: #ffffff;
    --text-main: #0f172a;
    --text-muted: #64748b;
    --border: #e2e8f0;

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;

    /* Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
}

[data-theme="dark"] {
    --primary: #ffffff;
    --primary-hover: #e0e0e0;
    --secondary: #1a1a1a;
    --secondary-hover: #222222;
    --danger: #f87171;
    --danger-hover: #ef4444;
    --success: #34d399;
    --background: #0f0f0f;
    --surface: #1a1a1a;
    --text-main: #f0f0f0;
    --text-muted: #666666;
    --border: #2a2a2a;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.4);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.5), 0 2px 4px -2px rgb(0 0 0 / 0.5);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.6), 0 4px 6px -4px rgb(0 0 0 / 0.6);
    --btn-primary-text: #0f0f0f;
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--background);
    color: var(--text-main);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* Layout */
.app-layout {
    display: flex;
    flex-direction: column;
    height: 100vh;
    overflow: hidden;
}

/* Top Navbar */
.topnav {
    background: #111111;
    height: 52px;
    display: flex;
    align-items: center;
    padding: 0 1.5rem;
    gap: 1.5rem;
    flex-shrink: 0;
    position: relative;
    z-index: 100;
}

.topnav-logo {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-right: 1rem;
    flex-shrink: 0;
}

.topnav-logo span {
    color: white;
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 0.04em;
}

.topnav-links {
    display: flex;
    align-items: center;
    gap: 4px;
    flex: 1;
}

.topnav-item {
    color: rgba(255,255,255,0.55);
    font-size: 13px;
    font-weight: 500;
    text-decoration: none;
    padding: 5px 12px;
    border-radius: 6px;
    transition: color 0.15s;
    white-space: nowrap;
    background: transparent;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 5px;
}

.topnav-item:hover,
.topnav-item.active-dd {
    color: rgba(255,255,255,0.9);
}

.topnav-item.active {
    color: white;
    border-bottom: 2px solid white;
    border-radius: 0;
}

.topnav-group {
    position: relative;
}

.topnav-dropdown {
    display: none;
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    background: #1a1a1a;
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 10px;
    padding: 6px;
    min-width: 210px;
    z-index: 999;
    box-shadow: 0 8px 24px rgba(0,0,0,0.4);
}

.topnav-dropdown.open {
    display: block;
}

.topnav-dd-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 12px;
    color: rgba(255,255,255,0.65);
    font-size: 13px;
    text-decoration: none;
    border-radius: 6px;
    transition: background 0.15s, color 0.15s;
}

.topnav-dd-item:hover,
.topnav-dd-item.active {
    background: rgba(255,255,255,0.08);
    color: white;
}

.topnav-dd-item svg {
    width: 15px;
    height: 15px;
    flex-shrink: 0;
    opacity: 0.6;
}

.topnav-right {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-left: auto;
    flex-shrink: 0;
}

.topnav-logout {
    background: transparent;
    border: none;
    color: rgba(255,255,255,0.4);
    cursor: pointer;
    display: flex;
    align-items: center;
    padding: 4px;
    border-radius: 4px;
    transition: color 0.15s;
}

.topnav-logout:hover {
    color: white;
}

.topnav-hamburger {
    display: none;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 4px;
}

/* Main Content */
.main-content {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-xl);
}

/* Mobile topnav */
@media (max-width: 768px) {
    .topnav { gap: 0; padding: 0 1rem; }
    .topnav-links {
        display: none;
        position: fixed;
        top: 52px;
        left: 0;
        right: 0;
        background: #111111;
        flex-direction: column;
        align-items: flex-start;
        padding: 1rem;
        gap: 2px;
        z-index: 99;
        border-bottom: 1px solid rgba(255,255,255,0.1);
    }
    .topnav-links.mobile-open { display: flex; }
    .topnav-hamburger { display: flex; }
    .topnav-item { width: 100%; border-radius: 6px; }
    .topnav-item.active { border-bottom: none; background: rgba(255,255,255,0.1); border-radius: 6px; }
    .topnav-dropdown { position: static; box-shadow: none; background: rgba(255,255,255,0.05); border: none; margin-top: 2px; }
    #current-user-display { display: none; }
}

.view {
    display: none;
    animation: fadeIn 0.3s ease-in-out;
}

.view.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.view-header {
    margin-bottom: var(--spacing-lg);
}

.view-header h1 {
    font-size: 1.875rem;
    font-weight: 700;
    color: var(--text-main);
}

.view-header p {
    color: var(--text-muted);
    margin-top: var(--spacing-xs);
}

/* UI Elements */
.card {
    background-color: var(--surface);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    border: 1px solid var(--border);
    transition: background-color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.card-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--text-main);
}

.shadow-sm { box-shadow: var(--shadow-sm); }
.shadow-md { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }

.mt-xs { margin-top: var(--spacing-xs); }
.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }

.mb-xs { margin-bottom: var(--spacing-xs); }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }

.p-md { padding: var(--spacing-md); }

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

.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

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

.grid-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-md);
}

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

.divider {
    height: 1px;
    background-color: var(--border);
    width: 100%;
}

.w-full { width: 100%; }
.text-right { text-align: right; }

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-md);
    font-weight: 500;
    font-size: 0.875rem;
    cursor: pointer;
    border: none;
    transition: all 0.2s;
    font-family: inherit;
}

.btn-primary {
    background-color: var(--primary);
    color: var(--btn-primary-text, white);
}

.btn-primary:hover {
    background-color: var(--primary-hover);
}

.btn-secondary {
    background-color: var(--secondary);
    color: var(--text-main);
}

.btn-secondary:hover {
    background-color: var(--secondary-hover);
}

.btn-danger {
    background-color: var(--danger);
    color: white;
}

.btn-danger:hover {
    background-color: var(--danger-hover);
}

.btn-icon {
    padding: 0.25rem;
    background: transparent;
    color: var(--text-muted);
    border-radius: var(--radius-sm);
}

.btn-icon:hover {
    background-color: var(--secondary);
    color: var(--text-main);
}

.btn-icon.danger:hover {
    color: var(--danger);
    background-color: #fee2e2;
}

.btn-block {
    width: 100%;
}

/* Forms */
.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.form-group label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-main);
}

input, select, textarea {
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: 0.875rem;
    color: var(--text-main);
    background-color: var(--surface);
    transition: border-color 0.2s;
}

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

.input-readonly {
    background-color: var(--secondary);
    cursor: not-allowed;
    color: var(--text-muted);
}

/* Hide number input arrows */
input[type="number"]::-webkit-outer-spin-button,
input[type="number"]::-webkit-inner-spin-button {
    -webkit-appearance: none;
    appearance: none;
    margin: 0;
}
input[type="number"] {
    -moz-appearance: textfield;
    appearance: textfield;
}

/* Search Box */
.search-box {
    position: relative;
    width: 100%;
}

.search-box i {
    position: absolute;
    left: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    width: 18px;
    height: 18px;
}

.search-box input {
    width: 100%;
    padding-left: 2.25rem;
}

.dropdown-icon-btn {
    position: absolute;
    right: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
    cursor: pointer;
    color: var(--text-muted);
    width: 20px;
    height: 20px;
    padding: 2px;
    border-radius: var(--radius-sm);
    transition: all 0.2s;
}

.dropdown-icon-btn:hover {
    background-color: var(--secondary);
    color: var(--text-main);
}

/* Dropdown */
.hidden { display: none !important; }

.dropdown-list {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    max-height: 200px;
    overflow-y: auto;
    z-index: 10;
    margin-top: 4px;
}

.dropdown-item {
    padding: var(--spacing-sm) var(--spacing-md);
    cursor: pointer;
    font-size: 0.875rem;
}

.dropdown-item:hover {
    background-color: var(--secondary);
}

/* Tables */
.table-container {
    width: 100%;
    overflow-x: auto;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    transition: border-color 0.3s ease;
}

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

.data-table th, .data-table td {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--border);
    font-size: 0.875rem;
}

.data-table th {
    background-color: var(--secondary);
    font-weight: 600;
    color: var(--text-muted);
}

.data-table tbody tr:last-child td {
    border-bottom: none;
}

.data-table tbody tr:hover {
    background-color: var(--secondary);
}

/* Item inputs in table */
.item-input {
    width: 100%;
    border: 1px solid transparent;
    padding: 0.25rem 0.5rem;
}

.item-input:hover, .item-input:focus {
    border-color: var(--border);
    background-color: var(--surface);
}

.item-row {
    background-color: var(--surface);
}

/* Dashboard Stats */
.dashboard-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
}

.stat-card {
    background-color: var(--surface);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
}

.stat-card h3 {
    font-size: 0.875rem;
    color: var(--text-muted);
    font-weight: 500;
}

.stat-value {
    font-size: 1.875rem;
    font-weight: 700;
    color: var(--text-main);
    margin-top: var(--spacing-sm);
}

/* Summary / Totals block for invoices */
.summary-card {
    display: flex;
    justify-content: space-between;
    gap: var(--spacing-lg);
}

.summary-left {
    flex: 1;
}

.summary-right {
    width: 300px;
    background-color: var(--secondary);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
}

.calc-row {
    display: flex;
    justify-content: space-between;
    padding: var(--spacing-xs) 0;
    font-size: 0.875rem;
}

.total-row {
    margin-top: var(--spacing-sm);
    padding-top: var(--spacing-sm);
    border-top: 1px solid var(--border);
    font-weight: 700;
    font-size: 1.125rem;
    color: var(--primary);
}

.letras-box {
    margin-top: var(--spacing-xs);
    padding: var(--spacing-md);
    background-color: var(--secondary);
    border-radius: var(--radius-md);
    font-weight: 600;
    color: var(--primary);
    text-transform: uppercase;
}

/* Modals */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: rgba(15, 23, 42, 0.5);
    backdrop-filter: blur(2px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
}

.modal {
    width: 100%;
    max-width: 500px;
    background-color: var(--surface);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
}

.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-sm);
}

/* Toast */
.toast-container {
    position: fixed;
    bottom: var(--spacing-lg);
    right: var(--spacing-lg);
    z-index: 1000;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.toast {
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    background-color: var(--surface);
    color: var(--text-main);
    box-shadow: var(--shadow-lg);
    border-left: 4px solid var(--primary);
    min-width: 250px;
    animation: toastSlideIn 0.3s ease-out forwards;
}

.toast.success { border-color: var(--success); }
.toast.danger { border-color: var(--danger); }

@keyframes toastSlideIn {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

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

.bg-light { background-color: var(--secondary); }
.fw-bold { font-weight: 700; }

/* Settings Tabs */
.settings-layout {
    display: flex;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-md);
}
.settings-nav {
    width: 200px;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    flex-shrink: 0;
}
.settings-nav-item {
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    color: var(--text-muted);
    cursor: pointer;
    font-weight: 500;
    transition: all 0.2s;
    background: transparent;
    border: none;
    text-align: left;
    font-family: inherit;
    font-size: 0.875rem;
}
.settings-nav-item:hover {
    background-color: var(--secondary);
    color: var(--text-main);
}
.settings-nav-item.active {
    background-color: var(--primary);
    color: white;
}
.settings-content {
    flex: 1;
}
.settings-pane {
    display: none;
    animation: fadeIn 0.3s ease-in-out;
}
.settings-pane.active {
    display: block;
}

/* legacy mobile classes — kept empty to avoid JS errors */
.mobile-header { display: none; }
.sidebar-overlay { display: none; }

@media (max-width: 900px) {
    .app-layout {
        flex-direction: column;
        height: 100vh;
        padding-top: 60px; /* space for fixed header */
    }
    
    .mobile-header {
        display: flex;
    }
    
    .mobile-close-btn {
        display: inline-flex;
    }
    
    .sidebar {
        position: fixed;
        top: 0;
        left: -260px;
        width: 250px;
        height: 100vh;
        z-index: 999;
        box-shadow: var(--shadow-lg);
        transition: left 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    
    .sidebar.active {
        left: 0;
    }
    
    .sidebar-nav {
        flex-direction: column;
        padding: var(--spacing-md) 0;
        overflow-y: auto;
        white-space: normal;
    }
    
    .nav-item {
        padding: var(--spacing-sm) var(--spacing-lg);
        border-right: none;
        flex: none;
    }
    
    .nav-item.active {
        border-right: 3px solid var(--primary);
        border-bottom: none;
    }
    
    .main-content {
        padding: var(--spacing-md);
        height: calc(100vh - 60px);
        overflow-y: auto;
    }
    
    .grid-4, .grid-3 {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .settings-layout {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .settings-nav {
        width: 100%;
        flex-direction: row;
        overflow-x: auto;
        white-space: nowrap;
        padding-bottom: var(--spacing-xs);
        border-bottom: 1px solid var(--border);
    }
    
    .settings-nav-item {
        flex: 0 0 auto;
        padding: var(--spacing-xs) var(--spacing-md);
    }
}

@media (max-width: 600px) {
    .grid-4, .grid-3, .grid-2 {
        grid-template-columns: 1fr;
    }
    .table-container {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
    table.data-table {
        min-width: 600px;
    }
    .summary-card {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    .summary-right {
        width: 100%;
    }
    .view-header h1 {
        font-size: 1.5rem;
    }
    .dashboard-stats {
        grid-template-columns: 1fr;
    }
    .modal {
        margin: var(--spacing-md);
        max-height: 90vh;
        overflow-y: auto;
        width: calc(100% - 2 * var(--spacing-md));
    }
}

/* Estilos Finanzas */
.search-box { position: relative; }
.search-icon { position: absolute; left: 10px; top: 10px; color: var(--text-muted); width: 18px; }
.search-box input { padding-left: 35px; width: 100%; border: 1px solid var(--border); border-radius: 6px; padding-top: 8px; padding-bottom: 8px; }
.dropdown-suggestions { position: absolute; top: 100%; left: 0; right: 0; background: var(--surface); border: 1px solid var(--border); border-radius: 6px; z-index: 1000; max-height: 200px; overflow-y: auto; box-shadow: 0 10px 15px -3px rgba(0,0,0,0.1); margin-top: 5px; }
.dropdown-suggestions .suggestion-item { padding: 12px 15px; cursor: pointer; border-bottom: 1px solid var(--border); font-size: 0.95rem; color: var(--text-main); }
.dropdown-suggestions .suggestion-item:last-child { border-bottom: none; }
.dropdown-suggestions .suggestion-item:hover { background: var(--secondary); color: var(--primary); font-weight: 500; }

/* Multi-company console and forms styles */
.global-pane {
    animation: fadeIn 0.3s ease-in-out;
}

.module-config-row {
    background-color: var(--background);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
    margin-bottom: var(--spacing-sm);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    transition: all 0.2s ease;
}

.module-config-row:hover {
    border-color: var(--primary);
}

.module-header-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border);
    padding-bottom: var(--spacing-xs);
}

.module-actions-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-md);
    padding-left: var(--spacing-sm);
}

.badge-status {
    padding: 0.25rem 0.6rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
    display: inline-block;
}

.badge-status.active, .badge-status.Activa {
    background-color: #d1fae5;
    color: #065f46;
}

.badge-status.inactive, .badge-status.Inactiva {
    background-color: #fee2e2;
    color: #991b1b;
}

.badge-status.suspended, .badge-status.Bloqueada {
    background-color: #fef3c7;
    color: #92400e;
}