:root {
    --bg-main: #f8fafc;
    --bg-surface: #ffffff;
    --bg-subtle: #f1f5f9;
    --border-color: #e2e8f0;
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #64748b;
    --accent-primary: #1e40af;
    --accent-hover: #1d4ed8;
    --accent-light: #eff6ff;
    --kr-red: #b91c1c;
    --kr-gold: #d97706;
    --success-bg: #dcfce7;
    --success-text: #166534;
    --danger-bg: #fee2e2;
    --danger-text: #991b1b;
    --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.06);
    --shadow-md: 0 4px 12px rgba(15, 23, 42, 0.08);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background-color: var(--bg-main);
    color: var(--text-primary);
    height: 100vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

/* Верхняя шапка */
.topbar {
    background: linear-gradient(135deg, #0f172a 0%, #1e3a8a 100%);
    color: #ffffff;
    padding: 12px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    border-bottom: 3px solid #f59e0b;
    flex-shrink: 0;
}

.brand {
    display: flex;
    align-items: center;
    gap: 14px;
}

.brand-emblem {
    font-size: 28px;
    background: rgba(255, 255, 255, 0.12);
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.brand-title-row {
    display: flex;
    align-items: center;
    gap: 10px;
}

.brand h1 {
    font-size: 20px;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.kr-badge {
    font-size: 11px;
    background: rgba(245, 158, 11, 0.25);
    color: #fde68a;
    border: 1px solid rgba(253, 230, 138, 0.4);
    padding: 2px 8px;
    border-radius: 999px;
    font-weight: 600;
}

.brand-subtitle {
    font-size: 12.5px;
    color: #cbd5e1;
    margin-top: 2px;
}

.topbar-controls {
    display: flex;
    align-items: center;
    gap: 12px;
}

.mode-switcher {
    background: rgba(15, 23, 42, 0.55);
    padding: 4px;
    border-radius: 10px;
    display: flex;
    gap: 4px;
    border: 1px solid rgba(255, 255, 255, 0.16);
}

.mode-btn {
    background: transparent;
    color: #cbd5e1;
    border: none;
    padding: 7px 13px;
    border-radius: 7px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.15s ease;
}

.mode-btn.active {
    background: #ffffff;
    color: #0f172a;
    box-shadow: var(--shadow-sm);
}

.settings-btn {
    background: rgba(255, 255, 255, 0.12);
    color: #ffffff;
    border: 1px solid rgba(255, 255, 255, 0.25);
    padding: 8px 14px;
    border-radius: 8px;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
}

.settings-btn:hover {
    background: rgba(255, 255, 255, 0.22);
}

/* Вкладки навигации */
.nav-tabs {
    background: var(--bg-surface);
    border-bottom: 1px solid var(--border-color);
    padding: 0 18px;
    display: flex;
    flex-wrap: wrap;
    gap: 2px;
    flex-shrink: 0;
}

.nav-tab {
    background: transparent;
    border: none;
    border-bottom: 3px solid transparent;
    padding: 10px 12px;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.15s ease;
    white-space: nowrap;
}

.nav-tab:hover {
    color: var(--accent-primary);
    background: var(--bg-subtle);
}

.nav-tab.active {
    color: var(--accent-primary);
    border-bottom-color: var(--accent-primary);
}

/* Основная рабочая область (Split-Screen) */
.workspace {
    display: grid;
    grid-template-columns: 1.25fr 1fr;
    flex: 1;
    overflow: hidden;
}

.left-panel {
    display: flex;
    flex-direction: column;
    overflow: hidden;
    border-right: 1px solid var(--border-color);
    background: var(--bg-main);
}

.tab-view {
    display: none;
    flex-direction: column;
    height: 100%;
    overflow-y: auto;
    padding: 16px 20px;
}

.tab-view.active {
    display: flex;
}

/* Вкладка 1: Чат */
#tab-chat {
    padding: 12px 18px;
    gap: 8px;
    overflow-y: auto;
}

.chat-toolbar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    background: var(--accent-light);
    border: 1px solid #bfdbfe;
    padding: 8px 12px;
    border-radius: 10px;
    font-size: 12px;
    color: #1e3a8a;
    flex-shrink: 0;
}

.filter-group {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-shrink: 0;
}

.filter-group select {
    padding: 5px 8px;
    border-radius: 6px;
    border: 1px solid #93c5fd;
    font-size: 12px;
    background: #ffffff;
}

.sample-questions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 5px;
    flex-shrink: 0;
}

.sample-label {
    font-size: 11.5px;
    font-weight: 600;
    color: var(--text-muted);
}

.sample-chip {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 4px 10px;
    border-radius: 999px;
    font-size: 11.5px;
    cursor: pointer;
    transition: all 0.15s ease;
}

.sample-chip:hover {
    border-color: var(--accent-primary);
    background: var(--accent-light);
    color: var(--accent-primary);
}

.chat-messages {
    flex: 1 1 auto;
    min-height: 260px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 12px;
    padding-right: 6px;
}

.message {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 14px 16px;
    box-shadow: var(--shadow-sm);
    line-height: 1.55;
    font-size: 14px;
}

.user-message {
    align-self: flex-end;
    background: #1e3a8a;
    color: #ffffff;
    border-color: #1e40af;
    max-width: 85%;
}

.assistant-message {
    border-left: 4px solid var(--accent-primary);
}

.message-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 8px;
    padding-bottom: 6px;
    border-bottom: 1px solid var(--bg-subtle);
    font-size: 12px;
}

.assistant-badge {
    font-weight: 700;
    color: var(--accent-primary);
}

.engine-tag {
    color: var(--text-muted);
    background: var(--bg-subtle);
    padding: 2px 8px;
    border-radius: 999px;
    font-size: 11px;
}

.message-body h2 {
    font-size: 16px;
    margin: 14px 0 6px 0;
    color: #0f172a;
}

.message-body h3 {
    font-size: 15px;
    margin: 12px 0 6px 0;
    color: #0f172a;
}

.message-body h4 {
    font-size: 14px;
    margin: 10px 0 4px 0;
    color: #1e293b;
}

.message-body h2:first-child,
.message-body h3:first-child,
.message-body h4:first-child {
    margin-top: 0;
}

.message-body p {
    margin-bottom: 8px;
}

.message-body ul, .message-body ol {
    margin: 6px 0 10px 20px;
}

.message-body li {
    margin-bottom: 6px;
}

.message-body hr {
    border: none;
    border-top: 1px solid var(--border-color);
    margin: 12px 0;
}

.message-body code {
    background: #f1f5f9;
    color: #0f172a;
    padding: 1px 6px;
    border-radius: 4px;
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    font-size: 12.5px;
    border: 1px solid #e2e8f0;
}

.message-body blockquote {
    background: var(--bg-subtle);
    border-left: 3px solid #64748b;
    padding: 8px 12px;
    margin: 6px 0;
    border-radius: 0 6px 6px 0;
    font-size: 13px;
    color: #334155;
}

/* Интерактивная ссылка на статью НПА в тексте ответа */
.cite-badge,
.cite-link {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    background: #dbeafe;
    color: #1e40af;
    border: 1px solid #93c5fd;
    padding: 1px 8px;
    border-radius: 6px;
    font-size: 12.5px;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.15s ease;
}

.cite-badge:hover,
.cite-link:hover {
    background: #1e40af;
    color: #ffffff;
}

.citations-strip {
    margin-top: 12px;
    padding-top: 10px;
    border-top: 1px dashed var(--border-color);
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.chat-input-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    background: var(--bg-surface);
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    flex-shrink: 0;
}

.chat-input-bar input {
    flex: 1 1 260px;
    min-width: 240px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 10px 14px;
    font-size: 14px;
    outline: none;
}

.chat-input-bar input:focus {
    border-color: var(--accent-primary);
}

.primary-btn {
    background: var(--accent-primary);
    color: #ffffff;
    border: none;
    padding: 10px 18px;
    border-radius: 8px;
    font-size: 13.5px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.15s ease;
}

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

.secondary-btn {
    background: var(--bg-subtle);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    padding: 10px 16px;
    border-radius: 8px;
    font-size: 13.5px;
    font-weight: 600;
    cursor: pointer;
}

/* Вкладка 2: Пирамида иерархии НПА КР */
.section-header {
    margin-bottom: 14px;
}

.section-header h2 {
    font-size: 18px;
    margin-bottom: 4px;
}

.section-header p {
    font-size: 13px;
    color: var(--text-secondary);
}

.search-box-inline {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 14px;
    background: var(--bg-surface);
    padding: 10px 14px;
    border-radius: 10px;
    border: 1px solid var(--border-color);
}

.search-box-inline input[type="text"] {
    flex: 1;
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 13.5px;
}

.checkbox-label {
    font-size: 12.5px;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
    white-space: nowrap;
}

.hierarchy-pyramid {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.level-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.level-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    cursor: pointer;
    transition: background 0.15s ease;
}

.level-header:hover {
    background: var(--bg-subtle);
}

.level-title-group {
    display: flex;
    align-items: center;
    gap: 12px;
}

.level-num-badge {
    color: #ffffff;
    font-weight: 700;
    font-size: 12px;
    padding: 4px 10px;
    border-radius: 6px;
    min-width: 88px;
    text-align: center;
}

.level-info h4 {
    font-size: 14.5px;
    color: var(--text-primary);
}

.level-info p {
    font-size: 12px;
    color: var(--text-secondary);
    margin-top: 2px;
}

.level-counts {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    background: var(--bg-subtle);
    padding: 4px 10px;
    border-radius: 999px;
}

.level-acts-list {
    border-top: 1px solid var(--border-color);
    padding: 10px 16px;
    background: #fcfdff;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.act-row-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 9px 12px;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.15s ease;
}

.act-row-item:hover {
    border-color: var(--accent-primary);
    background: var(--accent-light);
}

/* ПРАВАЯ ПАНЕЛЬ: Просмотр НПА */
.right-panel {
    display: flex;
    flex-direction: column;
    background: var(--bg-surface);
    overflow: hidden;
}

.viewer-header {
    padding: 14px 20px;
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-subtle);
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 12px;
}

.viewer-kicker {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    font-weight: 700;
}

.viewer-header h3 {
    font-size: 15.5px;
    margin-top: 2px;
    line-height: 1.35;
}

.hierarchy-pill {
    font-size: 11.5px;
    font-weight: 700;
    padding: 4px 10px;
    border-radius: 999px;
    color: #ffffff;
    background: #475569;
    white-space: nowrap;
}

.viewer-content {
    flex: 1;
    overflow-y: auto;
    padding: 18px 22px;
}

.viewer-empty {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-secondary);
}

.empty-icon {
    font-size: 42px;
    margin-bottom: 12px;
}

.viewer-empty h4 {
    font-size: 16px;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.viewer-empty ul {
    text-align: left;
    max-width: 380px;
    margin: 14px auto 0 auto;
    font-size: 13px;
    line-height: 1.6;
}

.act-meta-box {
    background: var(--bg-subtle);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 12px 14px;
    margin-bottom: 16px;
    font-size: 12.5px;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.meta-badges-row {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
    margin-bottom: 4px;
}

.status-pill-active {
    background: var(--success-bg);
    color: var(--success-text);
    padding: 2px 8px;
    border-radius: 6px;
    font-weight: 700;
    font-size: 11.5px;
}

.status-pill-repealed {
    background: var(--danger-bg);
    color: var(--danger-text);
    padding: 2px 8px;
    border-radius: 6px;
    font-weight: 700;
    font-size: 11.5px;
}

.cbd-link-btn {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    color: var(--accent-primary);
    font-weight: 600;
    text-decoration: none;
}

.cbd-link-btn:hover {
    text-decoration: underline;
}

.article-card-view {
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 14px 16px;
    margin-bottom: 12px;
    background: #ffffff;
    transition: all 0.2s ease;
}

.article-card-view.highlighted {
    border: 2px solid var(--accent-primary);
    background: #f8fbff;
    box-shadow: var(--shadow-md);
}

.article-card-view h4 {
    font-size: 14.5px;
    color: #0f172a;
    margin-bottom: 8px;
}

.article-text-body {
    white-space: pre-line;
    font-size: 13.5px;
    line-height: 1.6;
    color: #1e293b;
}

.citizen-explain-box {
    margin-top: 10px;
    background: #fefce8;
    border-left: 3px solid #eab308;
    padding: 8px 12px;
    border-radius: 6px;
    font-size: 12.5px;
    color: #713f12;
}

/* Загрузка и Граф */
.upload-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 18px;
}

.card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 18px 20px;
    box-shadow: var(--shadow-sm);
}

.card h3 {
    font-size: 16px;
    margin-bottom: 6px;
}

.card-desc {
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 12px;
    line-height: 1.45;
}

.quick-cbd-list {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    align-items: center;
    margin-bottom: 14px;
}

.form-stack {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.form-stack label {
    font-size: 12.5px;
    font-weight: 600;
    color: var(--text-primary);
}

.form-stack input,
.form-stack select,
.form-stack textarea {
    padding: 9px 12px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 13.5px;
    font-family: inherit;
}

.form-row-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.form-row-2 > div {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.status-banner {
    margin-top: 12px;
    padding: 10px 14px;
    border-radius: 8px;
    font-size: 13px;
    background: var(--success-bg);
    color: var(--success-text);
}

.graph-container {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.graph-edge-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 12px 16px;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.graph-chain {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
    font-size: 13.5px;
    font-weight: 600;
}

.hidden {
    display: none !important;
}

/* Модальное окно */
.modal-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.55);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal-card {
    background: var(--bg-surface);
    border-radius: 14px;
    max-width: 520px;
    width: 92%;
    padding: 22px 24px;
    box-shadow: var(--shadow-md);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
}

.close-btn {
    background: transparent;
    border: none;
    font-size: 18px;
    cursor: pointer;
    color: var(--text-muted);
}

.modal-desc {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.5;
    margin-bottom: 14px;
}

.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    margin-top: 8px;
}

.key-hint {
    font-size: 11.5px;
    color: var(--success-text);
}

.direct-search-results {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 12px;
    margin-bottom: 14px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.site-footer {
    background: #f1f5f9;
    border-top: 1px solid var(--border-color);
    padding: 6px 20px;
    font-size: 11.5px;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 10px;
    flex-shrink: 0;
}