/* ELF Application - Multi-theme CSS System */

:root,
html[data-theme="blue"] {
    --bg-main: #f4f6f9;
    --bg-card: #ffffff;
    --bg-header: #1e3a5f;
    --bg-nav: #0f2537;
    --bg-nav-item-active: #0088cc;
    --text-header: #ffffff;
    --text-header-muted: #b0c4de;
    --bg-subnav: #e9ecef;
    --bg-subnav-active: #ffffff;
    --border-color: #dcdfe6;
    --text-main: #2c3e50;
    --text-muted: #6c757d;
    --primary: #0088cc;
    --primary-hover: #006699;
    --btn-default-bg: #f8f9fa;
    --btn-default-border: #cccccc;
    --btn-default-text: #333333;
    --btn-primary-bg: #0088cc;
    --btn-primary-text: #ffffff;
    --btn-danger-bg: #d9534f;
    --btn-danger-text: #ffffff;
    --table-header-bg: #f0f4f8;
    --table-row-hover: #f5f8fa;
    --input-bg: #ffffff;
    --input-border: #cccccc;
    --input-focus: #0088cc;
    --status-paid-bg: #d4edda;
    --status-paid-text: #155724;
    --status-unpaid-bg: #f8d7da;
    --status-unpaid-text: #721c24;
}

html[data-theme="dark"] {
    --bg-main: #12181f;
    --bg-card: #1a232c;
    --bg-header: #0d131a;
    --bg-nav: #080c11;
    --bg-nav-item-active: #0077b6;
    --text-header: #e0e6ed;
    --text-header-muted: #8b9bb4;
    --bg-subnav: #16202a;
    --bg-subnav-active: #22303c;
    --border-color: #2c3e50;
    --text-main: #e1e8ed;
    --text-muted: #8899a6;
    --primary: #0077b6;
    --primary-hover: #023e8a;
    --btn-default-bg: #22303c;
    --btn-default-border: #38444d;
    --btn-default-text: #e1e8ed;
    --btn-primary-bg: #0077b6;
    --btn-primary-text: #ffffff;
    --btn-danger-bg: #e63946;
    --btn-danger-text: #ffffff;
    --table-header-bg: #1c2733;
    --table-row-hover: #22303c;
    --input-bg: #192734;
    --input-border: #38444d;
    --input-focus: #0077b6;
    --status-paid-bg: #1b4332;
    --status-paid-text: #b7e4c7;
    --status-unpaid-bg: #4a148c;
    --status-unpaid-text: #f3e5f5;
}

html[data-theme="light"] {
    --bg-main: #f8fafc;
    --bg-card: #ffffff;
    --bg-header: #2563eb;
    --bg-nav: #1e40af;
    --bg-nav-item-active: #3b82f6;
    --text-header: #ffffff;
    --text-header-muted: #93c5fd;
    --bg-subnav: #f1f5f9;
    --bg-subnav-active: #ffffff;
    --border-color: #e2e8f0;
    --text-main: #1e293b;
    --text-muted: #64748b;
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --btn-default-bg: #ffffff;
    --btn-default-border: #cbd5e1;
    --btn-default-text: #334155;
    --btn-primary-bg: #2563eb;
    --btn-primary-text: #ffffff;
    --btn-danger-bg: #ef4444;
    --btn-danger-text: #ffffff;
    --table-header-bg: #f8fafc;
    --table-row-hover: #f1f5f9;
    --input-bg: #ffffff;
    --input-border: #cbd5e1;
    --input-focus: #2563eb;
    --status-paid-bg: #dcfce7;
    --status-paid-text: #166534;
    --status-unpaid-bg: #fee2e2;
    --status-unpaid-text: #991b1b;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    font-size: 13px;
    background-color: var(--bg-main);
    color: var(--text-main);
    line-height: 1.4;
}

/* Header bar */
.elf-header {
    background-color: var(--bg-header);
    color: var(--text-header);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 16px;
    height: 48px;
    min-height: 48px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    position: relative;
    z-index: 1000;
    flex-wrap: nowrap;
    gap: 8px;
}

.elf-logo-section {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
    white-space: nowrap;
}

.elf-logo-text {
    font-size: 17px;
    font-weight: 700;
    color: #ffffff;
    letter-spacing: 0.5px;
    white-space: nowrap;
}

.elf-logo-text span {
    color: #64b5f6;
}

.elf-main-nav {
    display: flex;
    align-items: center;
    gap: 2px;
    flex-shrink: 1;
    min-width: 0;
    white-space: nowrap;
}

.elf-nav-item {
    color: var(--text-header);
    text-decoration: none;
    padding: 7px 12px;
    font-size: 13px;
    font-weight: 500;
    border-radius: 4px;
    transition: background 0.15s, color 0.15s;
    white-space: nowrap;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.elf-nav-item:hover,
.elf-nav-item.active {
    background-color: var(--bg-nav-item-active);
    color: #ffffff;
}

.elf-nav-item.elf-nav-help {
    background: rgba(255, 255, 255, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.25);
    font-weight: 600;
}

.elf-nav-item.elf-nav-help:hover,
.elf-nav-item.elf-nav-help.active {
    background: linear-gradient(135deg, rgba(255,255,255,0.25), rgba(255,255,255,0.1));
    border-color: #64b5f6;
    color: #ffffff;
}

/* Submenu Dropdown */
.elf-dropdown {
    position: relative;
    display: inline-block;
    flex-shrink: 0;
}

.elf-dropdown-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background-color: var(--bg-card);
    min-width: 170px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    z-index: 1100;
    padding: 4px 0;
}

.elf-dropdown:hover .elf-dropdown-menu {
    display: block;
}

.elf-dropdown-menu a {
    color: var(--text-main);
    padding: 8px 14px;
    text-decoration: none;
    display: block;
    font-size: 12.5px;
    transition: background 0.15s;
    white-space: nowrap;
}

.elf-dropdown-menu a:hover,
.elf-dropdown-menu a.active {
    background-color: var(--table-header-bg);
    color: var(--primary);
    font-weight: 600;
}

.elf-header-right {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 12px;
    color: var(--text-header-muted);
    flex-shrink: 0;
    white-space: nowrap;
}

.elf-user-info {
    display: flex;
    align-items: center;
    gap: 4px;
    white-space: nowrap;
}

/* Theme Selector */
.theme-selector {
    display: flex;
    align-items: center;
    gap: 3px;
    background: rgba(255,255,255,0.15);
    padding: 2px 5px;
    border-radius: 12px;
    flex-shrink: 0;
    white-space: nowrap;
}

.theme-btn {
    border: none;
    background: transparent;
    color: #ffffff;
    cursor: pointer;
    padding: 2px 6px;
    border-radius: 8px;
    font-size: 11px;
    opacity: 0.75;
    transition: opacity 0.15s, background 0.15s;
    white-space: nowrap;
}

.theme-btn:hover,
.theme-btn.active {
    opacity: 1;
    background: rgba(255,255,255,0.25);
    font-weight: bold;
}

/* Theme Dropdown Select (Compact) */
.elf-theme-select {
    background: rgba(255, 255, 255, 0.15);
    color: #ffffff;
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 4px;
    font-size: 11px;
    font-weight: 500;
    padding: 2px 8px;
    height: 26px;
    cursor: pointer;
    outline: none;
    transition: background 0.15s, border-color 0.15s;
}

.elf-theme-select:hover,
.elf-theme-select:focus {
    background: rgba(255, 255, 255, 0.25);
    border-color: rgba(255, 255, 255, 0.5);
}

.elf-theme-select option {
    background-color: var(--bg-card, #ffffff);
    color: var(--text-main, #222222);
}

/* Mobile Hamburger Toggle Button */
.elf-mobile-toggle {
    display: none;
    background: none;
    border: 1px solid rgba(255,255,255,0.25);
    border-radius: 4px;
    color: #ffffff;
    font-size: 18px;
    padding: 4px 8px;
    cursor: pointer;
    line-height: 1;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.elf-mobile-toggle:hover {
    background: rgba(255,255,255,0.15);
}

/* Mobile Navigation Drawer */
.elf-mobile-drawer {
    display: none;
    position: absolute;
    top: 48px;
    left: 0;
    right: 0;
    background: var(--bg-header);
    border-bottom: 2px solid var(--border-color);
    box-shadow: 0 8px 16px rgba(0,0,0,0.25);
    padding: 12px 16px;
    z-index: 999;
    flex-direction: column;
    gap: 6px;
    max-height: calc(100vh - 48px);
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
}

.elf-mobile-drawer.open {
    display: flex;
}

.elf-mobile-drawer .elf-nav-item {
    padding: 8px 12px;
    font-size: 14px;
    border-radius: 4px;
}

.elf-mobile-drawer .elf-dropdown-menu {
    position: static;
    display: block;
    box-shadow: none;
    background: rgba(0,0,0,0.1);
    margin-left: 12px;
    border: none;
    border-left: 2px solid rgba(255,255,255,0.2);
}

.elf-mobile-drawer .elf-dropdown-menu a {
    color: #ffffff;
    padding: 6px 12px;
}

/* Sub-nav Tabs bar */
.elf-tab-bar {
    background-color: var(--bg-subnav);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    padding: 4px 16px 0 16px;
    gap: 4px;
}

.elf-tab {
    display: flex;
    align-items: center;
    gap: 8px;
    background: rgba(0,0,0,0.05);
    border: 1px solid var(--border-color);
    border-bottom: none;
    padding: 6px 12px;
    border-radius: 4px 4px 0 0;
    font-size: 12px;
    color: var(--text-muted);
    text-decoration: none;
}

.elf-tab.active {
    background-color: var(--bg-subnav-active);
    color: var(--text-main);
    font-weight: 600;
    border-bottom: 1px solid var(--bg-subnav-active);
    margin-bottom: -1px;
}

.elf-tab-close {
    cursor: pointer;
    font-size: 11px;
    color: var(--text-muted);
}

.elf-tab-close:hover {
    color: var(--btn-danger-bg);
}

/* Action Toolbar */
.elf-toolbar {
    background-color: var(--bg-card);
    border-bottom: 1px solid var(--border-color);
    padding: 8px 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 8px;
}

.elf-toolbar-left,
.elf-toolbar-right {
    display: flex;
    align-items: center;
    gap: 8px;
}

/* Sub-navigation pill bar (used in Security, Archiv, etc.) */
.elf-subnav {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-wrap: wrap;
    margin-bottom: 16px;
    padding: 6px 10px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.elf-subnav a {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 5px 12px;
    font-size: 12px;
    font-weight: 500;
    color: var(--text-main);
    text-decoration: none;
    border-radius: 4px;
    border: 1px solid transparent;
    transition: all 0.15s ease;
}

.elf-subnav a:hover {
    background: var(--bg-subnav);
    color: var(--primary);
    border-color: var(--border-color);
}

.elf-subnav a.active {
    background: var(--primary);
    color: #ffffff;
    font-weight: 600;
    border-color: var(--primary);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 5px 12px;
    font-size: 12px;
    font-weight: 500;
    border-radius: 3px;
    cursor: pointer;
    border: 1px solid var(--btn-default-border);
    background-color: var(--btn-default-bg);
    color: var(--btn-default-text);
    text-decoration: none;
    transition: all 0.15s;
}

.btn:hover {
    filter: brightness(0.95);
}

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

.btn-danger {
    background-color: var(--btn-danger-bg);
    color: var(--btn-danger-text);
    border-color: var(--btn-danger-bg);
}

/* Form controls */
.form-control {
    padding: 5px 8px;
    font-size: 12px;
    border: 1px solid var(--input-border);
    background-color: var(--input-bg);
    color: var(--text-main);
    border-radius: 3px;
    outline: none;
}

.form-control:focus {
    border-color: var(--input-focus);
    box-shadow: 0 0 0 2px rgba(0,136,204,0.15);
}

/* Main Container */
.elf-container {
    padding: 16px;
    max-width: 100%;
}

.card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 16px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

/* Tables */
.table-responsive {
    overflow-x: auto;
}

.elf-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 12px;
}

.elf-table th,
.elf-table td {
    padding: 8px 10px;
    border: 1px solid var(--border-color);
    text-align: left;
}

.elf-table th {
    background-color: var(--table-header-bg);
    font-weight: 600;
}

.elf-table tbody tr:hover {
    background-color: var(--table-row-hover);
}

/* Status Badges */
.badge {
    display: inline-block;
    padding: 2px 8px;
    font-size: 11px;
    font-weight: 600;
    border-radius: 10px;
}

.badge-paid {
    background-color: var(--status-paid-bg);
    color: var(--status-paid-text);
}

.badge-unpaid {
    background-color: var(--status-unpaid-bg);
    color: var(--status-unpaid-text);
}

/* Form Layout (Two Columns like SC9) */
.form-grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

@media (max-width: 768px) {
    .form-grid-2 {
        grid-template-columns: 1fr;
    }
}

.form-group {
    margin-bottom: 12px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.form-group label {
    font-weight: 500;
    color: var(--text-main);
    font-size: 12px;
}

.form-group label span.required {
    color: red;
}

/* Custom Toggle Switch for SC9-style checkboxes */
.switch {
    position: relative;
    display: inline-block;
    width: 36px;
    height: 20px;
}

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

.slider {
    position: absolute;
    cursor: pointer;
    top: 0; left: 0; right: 0; bottom: 0;
    background-color: #ccc;
    transition: .3s;
    border-radius: 20px;
}

.slider:before {
    position: absolute;
    content: "";
    height: 14px; width: 14px;
    left: 3px; bottom: 3px;
    background-color: white;
    transition: .3s;
    border-radius: 50%;
}

input:checked + .slider {
    background-color: var(--primary);
}

input:checked + .slider:before {
    transform: translateX(16px);
}

/* ============================
   SC9-Style Form Components
   (unified across all screens)
   ============================ */

/* SC9 Form Table Layout */
.sc-form-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0 6px;
}

.sc-form-table td {
    padding: 3px 6px;
    vertical-align: middle;
}

.sc-form-table td.sc-label {
    width: 1%;
    white-space: nowrap;
}

.sc-full-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0 8px;
}

.sc-full-table td {
    padding: 3px 6px;
    vertical-align: middle;
}

.sc-full-table .sc-label {
    width: 200px;
}

/* SC9 Labels */
.sc-label {
    font-size: 12px;
    font-weight: 500;
    color: var(--text-main);
    white-space: nowrap;
    padding-right: 12px;
}

.sc-label.required::after {
    content: " *";
    color: #d9534f;
    font-weight: 700;
}

.sc-input-cell {
    width: 35%;
}

/* SC9 Input Fields - Unified Style */
.sc-input {
    width: 100%;
    max-width: 400px;
    padding: 5px 8px;
    font-size: 12px;
    font-family: inherit;
    border: 1px solid var(--input-border);
    background-color: var(--input-bg);
    color: var(--text-main);
    border-radius: 3px;
    outline: none;
    transition: border-color 0.2s, box-shadow 0.2s;
}

/* Specific input sizes matching content */
input[type="date"].sc-input,
.sc-input-date {
    width: 130px !important;
    max-width: 130px !important;
}

input[type="number"].sc-input {
    max-width: 110px;
}

.sc-input:focus {
    border-color: var(--input-focus);
    box-shadow: 0 0 0 2px rgba(0, 136, 204, 0.15);
}

.sc-input:read-only {
    background-color: var(--bg-main);
    cursor: not-allowed;
    opacity: 0.8;
}

.sc-input::placeholder {
    color: var(--text-muted);
    opacity: 0.6;
}

/* Select elements */
select.sc-input {
    cursor: pointer;
    appearance: auto;
    max-width: 360px;
}

/* Textarea */
textarea.sc-input {
    resize: vertical;
    min-height: 38px;
    max-width: 420px;
    line-height: 1.4;
}

/* Responsive form tables */
@media (max-width: 992px) {
    .sc-form-table, .sc-form-table tbody, .sc-form-table tr, .sc-form-table td,
    .sc-full-table, .sc-full-table tbody, .sc-full-table tr, .sc-full-table td {
        display: block;
        width: 100% !important;
        padding-left: 0 !important;
        padding-right: 0 !important;
    }
    .sc-label {
        margin-bottom: 2px;
        padding-top: 6px;
    }
}

/* Section Headers in forms */
.sc-section-header {
    margin: 0 0 10px 0;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-main);
    border-bottom: 1px dashed var(--border-color);
    padding-bottom: 4px;
}

/* Card margin utility */
.card + .card {
    margin-top: 20px;
}

/* SC9 Collapsible Box (Invoices) */
.sc-box-header {
    background: #eaedf1;
    color: #334155;
    font-size: 12px;
    font-weight: 600;
    padding: 6px 10px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border: 1px solid var(--border-color);
    user-select: none;
    transition: background 0.15s ease;
}

.sc-box-header:hover {
    background: #dfe4ea;
}

[data-theme="dark"] .sc-box-header {
    background: #1e293b;
    color: #cbd5e1;
}

[data-theme="dark"] .sc-box-header:hover {
    background: #283548;
}

.sc-box-body {
    border: 1px solid var(--border-color);
    border-top: none;
    padding: 8px;
    background: var(--bg-card);
}

/* SC9 Tabs (Invoice detail) */
.sc-tabs-bar {
    display: flex;
    border-bottom: 2px solid var(--border-color);
    margin-top: 16px;
    background: var(--bg-card);
}

.sc-tab-btn {
    padding: 6px 14px;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    border: 1px solid transparent;
    border-bottom: none;
    background: transparent;
    color: var(--text-muted);
    border-top-left-radius: 4px;
    border-top-right-radius: 4px;
    margin-bottom: -2px;
}

.sc-tab-btn.active {
    background: var(--bg-card);
    color: var(--primary);
    border: 1px solid var(--border-color);
    border-bottom: 2px solid var(--bg-card);
}

.sc-tab-pane {
    display: none;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-top: none;
    background: var(--bg-card);
}

.sc-tab-pane.active {
    display: block;
}

/* Date helper text */
.date-helper {
    font-size: 10px;
    color: var(--text-muted);
    margin-left: 4px;
    font-family: monospace;
}

/* =========================================================
   Responsive Header & Navigation Breakpoints
   ========================================================= */
@media (max-width: 1280px) {
    .elf-nav-item {
        padding: 6px 9px;
        font-size: 12px;
    }
    .elf-user-platnost {
        display: none;
    }
}

@media (max-width: 1100px) {
    .elf-logo-text span {
        display: none;
    }
    .elf-user-role {
        display: none;
    }
    .elf-user-label {
        display: none;
    }
}

@media (max-width: 992px) {
    .elf-main-nav {
        display: none;
    }
    .elf-mobile-toggle {
        display: inline-flex;
    }
}

@media (max-width: 600px) {
    .theme-selector {
        display: none;
    }
    .elf-header {
        padding: 0 10px;
    }
}

/* =========================================================
   Refined Search Filter Widget (SC9 Style)
   ========================================================= */
.elf-grid-layout {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.elf-filter-sidebar {
    width: 220px;
    min-width: 200px;
    flex-shrink: 0;
}

.elf-grid-main {
    flex: 1;
    min-width: 0;
}

.elf-filter-box {
    background: var(--bg-card);
    border: 1px solid #d1d9e2;
    border-radius: 2px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
    overflow: hidden;
    margin-bottom: 12px;
}

[data-theme="dark"] .elf-filter-box {
    border-color: var(--border-color);
}

.elf-filter-header {
    background: #e9eef4;
    color: #486581;
    font-size: 12px;
    font-weight: 600;
    padding: 6px 10px;
    border-bottom: 1px solid #d1d9e2;
    display: flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
    user-select: none;
}

[data-theme="dark"] .elf-filter-header {
    background: #1e293b;
    color: #94a3b8;
    border-bottom-color: var(--border-color);
}

.elf-filter-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.elf-filter-item {
    border-bottom: 1px solid #edf2f7;
    transition: background 0.15s;
}

[data-theme="dark"] .elf-filter-item {
    border-bottom-color: rgba(255,255,255,0.05);
}

.elf-filter-item a,
.elf-filter-item label {
    display: flex;
    align-items: center;
    padding: 5px 12px;
    color: var(--text-main);
    text-decoration: none;
    font-size: 12.5px;
    cursor: pointer;
    margin: 0;
    width: 100%;
}

.elf-filter-item:hover {
    background-color: #f1f5f9;
}

[data-theme="dark"] .elf-filter-item:hover {
    background-color: rgba(255,255,255,0.05);
}

.elf-filter-item.active {
    background-color: #e0f2fe;
    font-weight: 600;
    color: #0284c7;
}

[data-theme="dark"] .elf-filter-item.active {
    background-color: rgba(2, 132, 199, 0.2);
    color: #38bdf8;
}

.elf-filter-item input[type="checkbox"] {
    margin-right: 8px;
    cursor: pointer;
}

.elf-filter-footer {
    padding: 8px 10px;
    border-top: 1px solid #e2e8f0;
    background: #f8fafc;
    display: flex;
    justify-content: center;
    gap: 6px;
}

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

.elf-btn-multiselect {
    background: #ffffff;
    border: 1px solid #cbd5e1;
    color: #334155;
    padding: 3px 12px;
    font-size: 11.5px;
    border-radius: 3px;
    cursor: pointer;
    box-shadow: 0 1px 2px rgba(0,0,0,0.05);
    transition: all 0.15s;
    font-weight: 500;
}

.elf-btn-multiselect:hover {
    background: #f1f5f9;
    border-color: #94a3b8;
}

[data-theme="dark"] .elf-btn-multiselect {
    background: #1e293b;
    border-color: #475569;
    color: #e2e8f0;
}

[data-theme="dark"] .elf-btn-multiselect:hover {
    background: #334155;
}

@media (max-width: 900px) {
    .elf-grid-layout {
        flex-direction: column;
    }
    .elf-filter-sidebar {
        width: 100%;
    }
}

/* =========================================================
   AI Help & Floating Quick Button Styles
   ========================================================= */
.elf-floating-help-btn {
    position: fixed;
    bottom: 24px;
    right: 24px;
    background: linear-gradient(135deg, #0284c7, #2563eb);
    color: #ffffff;
    border: none;
    border-radius: 30px;
    padding: 10px 18px;
    font-size: 13px;
    font-weight: 600;
    box-shadow: 0 4px 14px rgba(37,99,235,0.35);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    z-index: 998;
    transition: transform 0.2s, box-shadow 0.2s;
    text-decoration: none;
}

.elf-floating-help-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(37,99,235,0.45);
    color: #ffffff;
}

/* =========================================================
   ELF Help & Documentation Styles
   ========================================================= */
.elf-help-group {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    margin-bottom: 14px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
    overflow: hidden;
}

.elf-help-group-title {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 9px 14px;
    background: var(--table-header-bg);
    border-bottom: 1px solid var(--border-color);
    cursor: pointer;
    font-weight: 700;
    font-size: 13.5px;
    color: var(--text-main);
    user-select: none;
    transition: background 0.15s;
}

.elf-help-group-title:hover {
    background: var(--bg-subnav);
}

.elf-help-group-icon {
    font-size: 10px;
    color: var(--text-muted);
    width: 14px;
    display: inline-block;
    text-align: center;
}

.elf-help-group-count {
    font-size: 11px;
    font-weight: 500;
    color: var(--text-muted);
    margin-left: auto;
    background: var(--bg-card);
    padding: 1px 8px;
    border-radius: 10px;
    border: 1px solid var(--border-color);
}

.elf-help-group-body {
    padding: 0;
}

.elf-help-article {
    border-bottom: 1px solid var(--border-color);
}

.elf-help-article:last-child {
    border-bottom: none;
}

.elf-help-article-header {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 9px 16px;
    cursor: pointer;
    background: var(--bg-card);
    user-select: none;
    transition: background 0.15s;
}

.elf-help-article-header:hover {
    background: var(--table-row-hover, #f8fafc);
}

[data-theme="dark"] .elf-help-article-header:hover {
    background: rgba(255, 255, 255, 0.04);
}

.elf-help-article-icon {
    font-size: 9px;
    color: var(--primary);
    width: 14px;
    display: inline-block;
    text-align: center;
}

.elf-help-article-title {
    font-weight: 600;
    font-size: 13px;
    color: var(--text-main);
}

.elf-help-article-body {
    padding: 14px 20px 16px 38px;
    background: var(--bg-main);
    border-top: 1px dashed var(--border-color);
}

.elf-help-article-content {
    font-size: 12.5px;
    line-height: 1.6;
    color: var(--text-main);
}

.elf-help-heading {
    margin: 4px 0 8px 0;
    font-size: 13.5px;
    font-weight: 700;
    color: var(--primary);
}

.elf-help-article-links {
    margin-top: 10px;
    padding-top: 8px;
    border-top: 1px dashed var(--border-color);
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

/* ====================================================================
   Statusbar (bottom info bar) - version, user, client, copyright
   ==================================================================== */
.elf-statusbar {
    background: var(--bg-subnav);
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
    padding: 4px 16px;
    font-size: 11px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-shrink: 0;
    user-select: none;
    line-height: 1.4;
}

.elf-statusbar strong {
    color: var(--text-main);
    font-weight: 600;
}

/* Flex wrapper to pin statusbar to bottom */
.elf-page-wrapper {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.elf-page-wrapper > .elf-container {
    flex: 1;
}

/* ====================================================================
   Info button in header
   ==================================================================== */
.elf-btn-info {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: var(--text-header);
    cursor: pointer;
    transition: all 0.2s;
    flex-shrink: 0;
    font-size: 15px;
    line-height: 1;
}

.elf-btn-info:hover {
    background: rgba(255, 255, 255, 0.25);
    border-color: rgba(255, 255, 255, 0.4);
}

/* ====================================================================
   About App Modal
   ==================================================================== */
.elf-modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.45);
    backdrop-filter: blur(3px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    animation: elfFadeIn 0.15s ease;
}

.elf-modal-overlay.hidden {
    display: none;
}

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

.elf-modal-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.25);
    max-width: 420px;
    width: 92%;
    padding: 22px;
}

.elf-modal-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 16px;
}

.elf-modal-header-left {
    display: flex;
    align-items: center;
    gap: 12px;
}

.elf-modal-icon {
    width: 40px;
    height: 40px;
    border-radius: 8px;
    background: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    font-weight: 900;
    font-size: 18px;
    flex-shrink: 0;
}

.elf-modal-title {
    font-size: 15px;
    font-weight: 700;
    color: var(--text-main);
    display: flex;
    align-items: center;
    gap: 8px;
}

.elf-modal-subtitle {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 2px;
}

.elf-version-tag {
    display: inline-block;
    font-size: 10px;
    font-weight: 700;
    font-family: monospace;
    background: var(--bg-subnav);
    color: var(--primary);
    border: 1px solid var(--border-color);
    padding: 1px 7px;
    border-radius: 10px;
}

.elf-modal-close {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 4px;
    border-radius: 6px;
    transition: all 0.15s;
    flex-shrink: 0;
    font-size: 18px;
    line-height: 1;
}

.elf-modal-close:hover {
    background: var(--bg-subnav);
    color: var(--text-main);
}

.elf-modal-info-grid {
    background: var(--bg-main);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 14px;
    margin-bottom: 14px;
}

.elf-modal-info-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 4px 0;
    font-size: 12px;
}

.elf-modal-info-row + .elf-modal-info-row {
    border-top: 1px solid var(--border-color);
    padding-top: 6px;
    margin-top: 2px;
}

.elf-modal-info-label {
    color: var(--text-muted);
    font-weight: 500;
}

.elf-modal-info-value {
    font-weight: 600;
    color: var(--text-main);
}

.elf-modal-info-value.mono {
    font-family: monospace;
    font-weight: 700;
}

.elf-modal-copyright {
    text-align: center;
    font-size: 11px;
    color: var(--text-muted);
    margin-bottom: 14px;
}

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

/* Login page version footer */
.login-version-footer {
    text-align: center;
    margin-top: 18px;
    font-size: 11.5px;
    color: rgba(255, 255, 255, 0.6);
}

.login-version-footer strong {
    color: rgba(255, 255, 255, 0.85);
    font-weight: 600;
}

/* =========================================================
   SC9 Accordion Filter Panel (PŘEHLED FAKTUR)
   ========================================================= */
.elf-filter-panel {
    background: #ffffff;
    border: 1px solid #c9d5e0;
    box-shadow: 0 1px 3px rgba(0,0,0,0.06);
    overflow: hidden;
    margin-bottom: 16px;
}

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

.elf-filter-title {
    background: #34495e;
    color: #ffffff;
    padding: 9px 12px;
    font-size: 12.5px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

[data-theme="dark"] .elf-filter-title {
    background: #1e293b;
    color: #f1f5f9;
}

.elf-filter-sec-header {
    background: #e9eff5;
    color: #486581;
    font-size: 12px;
    font-weight: 600;
    padding: 7px 12px;
    border-bottom: 1px solid #d4dfe8;
    border-top: 1px solid #ffffff;
    display: flex;
    align-items: center;
    justify-content: space-between;
    cursor: pointer;
    user-select: none;
    transition: background 0.15s;
}

[data-theme="dark"] .elf-filter-sec-header {
    background: #1e293b;
    color: #cbd5e1;
    border-bottom-color: var(--border-color);
    border-top-color: rgba(255,255,255,0.05);
}

.elf-filter-sec-header:hover {
    background: #dfe7f0;
}

[data-theme="dark"] .elf-filter-sec-header:hover {
    background: #273549;
}

.elf-filter-sec-arrow {
    font-size: 10px;
    color: #829ab1;
    margin-right: 6px;
    display: inline-block;
    width: 12px;
    text-align: center;
}

.elf-filter-sec-content {
    background: #ffffff;
    border-bottom: 1px solid #d4dfe8;
}

[data-theme="dark"] .elf-filter-sec-content {
    background: var(--bg-card);
    border-bottom-color: var(--border-color);
}

.elf-filter-input-row {
    padding: 8px 10px;
    display: flex;
    gap: 4px;
    align-items: center;
    background: #fafcff;
}

[data-theme="dark"] .elf-filter-input-row {
    background: rgba(255,255,255,0.02);
}

.elf-filter-input-row input {
    font-size: 11.5px;
    padding: 4px 8px;
    flex: 1;
    min-width: 0;
}

.elf-export-format-card:hover {
    border-color: var(--primary) !important;
    background: var(--bg-card) !important;
}

/* ====================================================================
   ELF - Interaktivní grafy & Analýza fakturace (matching VS code FAKTURY)
   ==================================================================== */

.elf-btn-charts {
    background: linear-gradient(135deg, #4f46e5 0%, #3b82f6 100%) !important;
    color: #ffffff !important;
    border: 1px solid rgba(255, 255, 255, 0.2) !important;
    font-weight: 600;
    box-shadow: 0 2px 5px rgba(79, 70, 229, 0.25);
    transition: all 0.2s ease;
}

.elf-btn-charts:hover {
    background: linear-gradient(135deg, #4338ca 0%, #2563eb 100%) !important;
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(79, 70, 229, 0.35);
}

.elf-btn-charts.active {
    background: linear-gradient(135deg, #3730a3 0%, #1d4ed8 100%) !important;
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.2), 0 0 0 2px rgba(99, 102, 241, 0.5);
}

.elf-chart-badge {
    background: rgba(255, 255, 255, 0.25);
    color: #ffffff;
    font-size: 10px;
    font-weight: 700;
    padding: 1px 6px;
    border-radius: 10px;
    margin-left: 3px;
}

.elf-charts-container {
    animation: elfSlideDown 0.25s ease-out;
}

@keyframes elfSlideDown {
    from {
        opacity: 0;
        transform: translateY(-8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.elf-charts-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 16px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
    margin-bottom: 16px;
}

[data-theme="dark"] .elf-charts-card {
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.35);
}

.elf-charts-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
    padding-bottom: 14px;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 16px;
}

.elf-charts-header-left {
    display: flex;
    align-items: center;
    gap: 12px;
}

.elf-charts-header-icon {
    width: 38px;
    height: 38px;
    border-radius: 8px;
    background: linear-gradient(135deg, #6366f1 0%, #4f46e5 100%);
    color: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    box-shadow: 0 2px 6px rgba(99, 102, 241, 0.3);
    flex-shrink: 0;
}

.elf-charts-title {
    font-size: 14px;
    font-weight: 700;
    color: var(--text-main);
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.elf-charts-count-pill {
    font-size: 11px;
    font-weight: normal;
    background: var(--bg-subnav);
    color: var(--text-muted);
    padding: 2px 8px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.elf-charts-subtitle {
    font-size: 11.5px;
    color: var(--text-muted);
    margin-top: 3px;
}

.elf-charts-header-right {
    display: flex;
    align-items: center;
    gap: 8px;
}

.elf-charts-close-btn {
    padding: 4px 8px !important;
    font-size: 13px !important;
    line-height: 1;
}

/* 4 KPI Summary Cards Grid */
.elf-kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 12px;
    margin-bottom: 16px;
}

.elf-kpi-card {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 14px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    background: var(--bg-main);
    transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.elf-kpi-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.05);
}

.elf-kpi-blue { border-left: 4px solid #3b82f6; }
.elf-kpi-emerald { border-left: 4px solid #10b981; }
.elf-kpi-purple { border-left: 4px solid #8b5cf6; }
.elf-kpi-amber { border-left: 4px solid #f59e0b; }

.elf-kpi-icon {
    width: 38px;
    height: 38px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    flex-shrink: 0;
}

.elf-kpi-blue .elf-kpi-icon { background: rgba(59, 130, 246, 0.15); color: #2563eb; }
.elf-kpi-emerald .elf-kpi-icon { background: rgba(16, 185, 129, 0.15); color: #059669; }
.elf-kpi-purple .elf-kpi-icon { background: rgba(139, 92, 246, 0.15); color: #7c3aed; }
.elf-kpi-amber .elf-kpi-icon { background: rgba(245, 158, 11, 0.15); color: #d97706; }

[data-theme="dark"] .elf-kpi-blue .elf-kpi-icon { background: rgba(59, 130, 246, 0.25); color: #60a5fa; }
[data-theme="dark"] .elf-kpi-emerald .elf-kpi-icon { background: rgba(16, 185, 129, 0.25); color: #34d399; }
[data-theme="dark"] .elf-kpi-purple .elf-kpi-icon { background: rgba(139, 92, 246, 0.25); color: #a78bfa; }
[data-theme="dark"] .elf-kpi-amber .elf-kpi-icon { background: rgba(245, 158, 11, 0.25); color: #fbbf24; }

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

.elf-kpi-label {
    font-size: 10.5px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    margin-bottom: 2px;
}

.elf-kpi-value {
    font-size: 16px;
    font-weight: 800;
    color: var(--text-main);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, monospace;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.elf-kpi-unit {
    font-size: 11px;
    font-weight: 600;
    color: var(--text-muted);
    margin-left: 2px;
}

.elf-kpi-sub {
    font-size: 10.5px;
    color: var(--text-muted);
    margin-top: 2px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Chart Navigation Tabs */
.elf-chart-tabs-bar {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 4px;
    border-radius: 6px;
    background: var(--bg-subnav);
    margin-bottom: 14px;
    flex-wrap: wrap;
}

.elf-chart-tab {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    font-size: 11.5px;
    font-weight: 600;
    border-radius: 4px;
    border: none;
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
    transition: all 0.15s ease;
}

.elf-chart-tab:hover {
    color: var(--text-main);
    background: rgba(0, 0, 0, 0.04);
}

[data-theme="dark"] .elf-chart-tab:hover {
    background: rgba(255, 255, 255, 0.05);
}

.elf-chart-tab.active {
    background: var(--bg-card);
    color: var(--text-main);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    font-weight: 700;
}

.elf-chart-tab.elf-tab-dashboard {
    margin-left: auto;
}

@media (max-width: 768px) {
    .elf-chart-tab.elf-tab-dashboard {
        margin-left: 0;
    }
}

/* Canvases and Dashboards */
.elf-single-chart-box {
    background: var(--bg-main);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 12px;
    position: relative;
    min-height: 360px;
}

.elf-chart-canvas-wrapper {
    position: relative;
    height: 350px;
    width: 100%;
}

.elf-dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 14px;
}

@media (max-width: 640px) {
    .elf-dashboard-grid {
        grid-template-columns: 1fr;
    }
}

.elf-dash-card {
    background: var(--bg-main);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 12px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.elf-dash-card-title {
    font-size: 12px;
    font-weight: 700;
    color: var(--text-main);
    display: flex;
    align-items: center;
    gap: 6px;
}

.elf-dash-canvas-wrapper {
    position: relative;
    height: 240px;
    width: 100%;
}

.elf-charts-empty {
    padding: 48px 16px;
    text-align: center;
    color: var(--text-muted);
}

.elf-empty-icon {
    font-size: 38px;
    opacity: 0.35;
    margin-bottom: 8px;
    display: block;
}

.elf-empty-title {
    font-size: 13.5px;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 4px;
}

.elf-empty-desc {
    font-size: 11.5px;
}