:root {
    /* Цветовая схема */
    --sidebar-bg: #3a3a3a;
    --sidebar-text: #d9d9d9;
    --sidebar-border: #d9d9d9;
    --sidebar-secondary: #d9d9d9;
    --content-bg: #d9d9d9;
    --content-text: #3a3a3a;
    --accent-color: #4a9eff;
    --accent-hover: #3a8eef;
    --success-color: #4caf50;
    --warning-color: #f59e0b;
    --error-color: #ef4444;

    /* Отступы */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
}

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

body {
    font-family: 'PT Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background: var(--content-bg);
    color: var(--content-text);
    height: 100vh;
    overflow: hidden;
}

/* ==================== МАКЕТ ==================== */
.app-container {
    display: flex;
    height: 100vh;
}

/* ==================== ЛЕВАЯ ПАНЕЛЬ ==================== */
.sidebar {
    width: 38.2%;
    min-width: 380px;
    background: var(--sidebar-bg);
    color: var(--sidebar-text);
    display: flex;
    flex-direction: column;
    border-right: 1px solid var(--sidebar-border);
    overflow-y: auto;
}

.sidebar__header {
    padding: var(--spacing-lg);
    text-align: center;
    /* border-bottom: 1px solid var(--sidebar-border); */
}

.sidebar__header h1 {
    font-size: 1.75em;
    font-weight: 600;
    line-height: 24px;
    margin-bottom: var(--spacing-xs);
}

.sidebar__header p {
    font-size: 0.85em;
    color: var(--sidebar-secondary);
}

.sidebar__section {
    padding: var(--spacing-md);
    /* border-bottom: 1px solid var(--sidebar-border); */
}

.sidebar__section--grow {
    flex-direction: column;
}

h2 {
    margin-bottom: var(--spacing-md);
}

.sidebar__title {
    font-size: 0.75em;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--sidebar-secondary);
    margin-bottom: var(--spacing-md);
}

.sidebar__footer {
    padding: var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
    /* border-top: 1px solid var(--sidebar-border); */
    margin-top: auto;
}

.sidebar__footer .contacts {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
}

.sidebar__footer .contacts a {
    display: flex;
    align-items: center;
    opacity: 0.5;
    transition: opacity 0.2s;
}

.sidebar__footer .contacts a:hover {
    opacity: 1;
}

/* ==================== ФОРМЫ ==================== */
.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    font-size: 0.85em;
    color: var(--sidebar-secondary);
    margin-bottom: var(--spacing-sm);
}

.form-select {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--sidebar-bg);
    border: 1px solid var(--sidebar-border);
    color: var(--sidebar-text);
    /* border-radius: 4px; */
    font-size: 0.9em;
    margin-bottom: var(--spacing-md);
}

/* ==================== DROP ZONE ==================== */
.drop-zone {
    border: 2px dashed var(--sidebar-border);
    /* border-radius: 4px; */
    padding: var(--spacing-lg);
    text-align: center;
    cursor: pointer;
    transition: border-color 0.2s, background 0.2s;
}

.drop-zone:hover,
.drop-zone.dragover {
    /* border-color: var(--accent-color); */
    /* background: rgba(74, 158, 255, 0.1); */
    background: #d9d9d922;
}

.drop-zone__prompt {
    color: var(--sidebar-text);
}

.drop-zone__prompt p {
    margin: var(--spacing-sm) 0;
}

.drop-zone__prompt .hint {
    font-size: 0.85em;
    color: var(--sidebar-secondary);
}

.drop-zone .icon {
    color: var(--sidebar-secondary);
    margin-bottom: var(--spacing-sm);
}

/* ==================== СПИСОК ФАЙЛОВ ==================== */
.files-list {
    margin-top: var(--spacing-md);
}

.file-item {
    background: rgba(255, 255, 255, 0.05);
    /* border-radius: 4px; */
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
}

.file-item__content {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.file-item__header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.file-item__name {
    flex-grow: 1;
    font-size: 0.9em;
    word-break: break-all;
}

.file-item__remove {
    background: none;
    border: none;
    color: var(--sidebar-secondary);
    cursor: pointer;
    padding: var(--spacing-sm);
    font-size: 1.5em;
    line-height: 1;
    margin-left: auto;
}

.file-item__remove:hover {
    color: var(--error-color);
}

.file-item__warning {
    font-size: 0.85em;
    color: var(--warning-color);
    margin-top: 2px;
}

.file-item__warning--error {
    color: var(--error-color);
    font-weight: 500;
}

.file-item__warning--ids-issue {
    color: #d97706;
    font-style: italic;
    font-size: 0.8em;
}

.file-item__warning--entity-error {
    color: #b91c1c;
    font-weight: 500;
    font-size: 0.85em;
}

/* IFC блок внутри file-item */
.file-item__ifc {
    margin-top: var(--spacing-sm);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.file-item__ifc-status {
    font-size: 0.85em;
    color: var(--sidebar-text);
    flex-grow: 1;
}

.file-item__ifc-download {
    background: var(--sidebar-text);
    color: var(--sidebar-bg);
    border: 1px solid var(--sidebar-text);
    border-radius: 0;
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 0.85em;
    cursor: pointer;
    white-space: nowrap;
}

.file-item__ifc-download:hover {
    background: var(--sidebar-bg);
    color: var(--sidebar-text);
}

/* ==================== ЛОГ ==================== */
.log-content {
    flex-grow: 1;
    /* background: rgba(0, 0, 0, 0.3); */
    /* border: 1px solid var(--sidebar-border); */
    /* border-radius: 4px; */
    padding: var(--spacing-sm);
    font-family: 'PT Mono', monospace;
    font-size: 0.75em;
    color: var(--sidebar-text);
    overflow-y: auto;
    white-space: pre-wrap;
    word-break: break-all;
}

/* ==================== ПРАВАЯ ПАНЕЛЬ ==================== */
.content {
    flex-grow: 1;
    width: 61.8%;
    background: var(--content-bg);
    padding: var(--spacing-lg);
    overflow-y: auto;
    overflow-x: hidden;
}

/* PSet КОНТЕЙНЕР ==================== */
.pset-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-md);
    gap: var(--spacing-sm);
}

.pset-nav-btn {
    background: var(--content-text);
    color: var(--content-bg);
    border: none;
    border-radius: 0;
    width: 44px;
    height: 44px;
    font-size: 20px;
    font-weight: bold;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: background 0.15s;
}

.pset-nav-btn:hover {
    background: #333;
}

.pset-nav-btn:active {
    transform: scale(0.95);
}

.pset-nav-info {
    font-size: 0.85em;
    color: var(--content-text);
    text-align: center;
    flex-grow: 1;
}

.pset-container {
    display: flex;
    gap: 0;
    overflow-x: auto;
    padding-bottom: var(--spacing-md);
}

.pset-container::-webkit-scrollbar {
    height: 10px;
}

.pset-column {
    width: 100%;
    flex-shrink: 0;
    background: #fff;
    /* border-radius: 8px; */
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    display: flex;
    flex-direction: column;
}

.pset-column__content {
    padding: var(--spacing-md);
    flex-grow: 1;
    overflow-y: auto;
    max-height: 100%;
}

.pset-column__empty {
    color: #d97706;
    font-style: italic;
    font-size: 0.85em;
    text-align: center;
    padding: var(--spacing-lg);
}

/* ==================== PSet ДЕРЕВО ==================== */
.pset-tree {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.tree-node {
    border: 1px solid #e0e0e0;
    /* border-radius: 4px; */
    overflow: hidden;
}

.tree-node__header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: #fafafa;
}

.tree-node__header:hover {
    background: #f0f0f0;
}

.tree-node__name {
    flex-grow: 1;
    font-size: 0.9em;
    font-weight: 600;
    color: var(--content-text);
    word-break: break-all;
}

.tree-node__entity-warning {
    color: #b45309;
    font-size: 0.85em;
    font-style: italic;
    padding: var(--spacing-xs) var(--spacing-md);
    background: rgba(180, 83, 9, 0.08);
    border-left: 3px solid #b45309;
    margin: var(--spacing-xs) 0;
}

.tree-node__entity-error {
    color: #b91c1c;
    font-size: 0.85em;
    font-weight: 500;
    padding: var(--spacing-xs) var(--spacing-md);
    background: rgba(185, 28, 28, 0.08);
    border-left: 3px solid #b91c1c;
    margin: var(--spacing-xs) 0;
}

.tree-node__pattern-warning {
    color: var(--warning-color);
    font-size: 0.85em;
    padding: var(--spacing-xs) var(--spacing-md);
    background: rgba(245, 158, 11, 0.1);
    border-left: 3px solid var(--warning-color);
    margin: var(--spacing-xs) 0;
}

.tree-node__children {
    padding: var(--spacing-sm) var(--spacing-md);
    border-top: 1px solid #e0e0e0;
}

.pset-tree__empty {
    color: var(--sidebar-secondary);
    font-style: italic;
    padding: var(--spacing-md);
    text-align: center;
}

/* ==================== PROPERTY ITEM ==================== */
.property-item {
    padding: var(--spacing-xs) 0;
    color: var(--content-text);
}

.property-item__header {
    font-size: 0.9em;
    font-weight: 500;
}

.property-item__description {
    font-size: 0.85em;
    /* color: var(--sidebar-secondary); */
    opacity: .5;
    margin-top: var(--spacing-xs);
    padding-left: var(--spacing-md);
}

/* ==================== КНОПКИ ==================== */
.btn {
    padding: var(--spacing-sm) var(--spacing-md);
    border: none;
    /* border-radius: 4px; */
    cursor: pointer;
    font-size: 0.9em;
    font-weight: 500;
    transition: background 0.2s;
}

.btn-primary {
    background: var(--sidebar-text);
    color: var(--sidebar-bg);
    border: 1px solid var(--sidebar-text);
    width: 100%;
}

.btn-primary:hover:not(:disabled) {
    background: var(--sidebar-bg);
    color: var(--sidebar-text);
}

.btn-primary:disabled {
    /* background: var(--sidebar-border); */
    cursor: not-allowed;
    opacity: 0.5;
}

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

.btn-secondary:hover {
    background: rgba(74, 158, 255, 0.1);
}

/* ==================== PROGRESS ==================== */
.progress-bar {
    height: 4px;
    background: #e0e0e0;
    /* border-radius: 2px; */
    overflow: hidden;
    margin-bottom: var(--spacing-sm);
}

.progress-bar__fill {
    height: 100%;
    background: var(--accent-color);
    width: 0%;
    transition: width 0.3s;
}

/* ==================== RESULT ==================== */
.result {
    background: #fff;
    /* border-radius: 8px; */
    padding: var(--spacing-lg);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.result.success h2 {
    color: var(--success-color);
    margin-bottom: var(--spacing-md);
}

.stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.stat {
    background: #f5f5f5;
    padding: var(--spacing-md);
    /* border-radius: 4px; */
    text-align: center;
}

.stat__value {
    font-size: 1.5em;
    font-weight: 600;
    color: var(--accent-color);
}

.stat__label {
    font-size: 0.85em;
    color: var(--sidebar-secondary);
    margin-top: var(--spacing-xs);
}

.file-info {
    color: var(--sidebar-secondary);
    margin-bottom: var(--spacing-md);
}

.actions {
    display: flex;
    gap: var(--spacing-sm);
}

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

/* ==================== АДАПТИВНОСТЬ ==================== */
@media (max-width: 768px) {
    .app-container {
        flex-direction: column;
    }

    .sidebar {
        width: 100%;
        min-width: 100%;
        max-height: 50vh;
        overflow-y: auto;
    }

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

    .pset-container {
        flex-direction: column;
    }

    .pset-column {
        min-width: 100%;
        max-width: 100%;
    }
}