:root {
    --bg-color: #0f172a;
    --sidebar-bg: #1e293b;
    --text-main: #f8fafc;
    --text-dim: #94a3b8;
    --accent: #38bdf8;
    --accent-glow: rgba(56, 189, 248, 0.2);
    --card-bg: #1e293b;
    --border: #334155;
    --success: #22c55e;
    --warning: #f59e0b;
    --error: #ef4444;
}

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

body {
    font-family: 'Inter', sans-serif;
    background: var(--bg-color);
    color: var(--text-main);
    height: 100vh;
    overflow: hidden;
}

.app-container {
    display: flex;
    height: 100vh;
}

/* Sidebar */
.sidebar {
    width: 350px;
    background: var(--sidebar-bg);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
}

.sidebar-header {
    padding: 24px;
    border-bottom: 1px solid var(--border);
}

.logo {
    font-family: 'Outfit', sans-serif;
    font-size: 24px;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 8px;
}

.logo span {
    color: var(--accent);
}

.sidebar-header h1 {
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-dim);
}

.document-list {
    flex: 1;
    overflow-y: auto;
    padding: 12px;
}

.doc-item {
    padding: 16px;
    border-radius: 12px;
    margin-bottom: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
    border: 1px solid transparent;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.doc-item:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--border);
}

.doc-item.active {
    background: var(--accent-glow);
    border-color: var(--accent);
}

.doc-info {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.doc-filename {
    font-weight: 600;
    font-size: 14px;
}

.doc-meta {
    font-size: 12px;
    color: var(--text-dim);
}

.status-badge {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.status-badge.CONFIRMED { background: var(--success); box-shadow: 0 0 10px var(--success); }
.status-badge.RETRY { background: var(--warning); box-shadow: 0 0 10px var(--warning); }
.status-badge.ERROR { background: var(--error); box-shadow: 0 0 10px var(--error); }

/* Main Content */
.main-content {
    flex: 1;
    padding: 24px;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.empty-state {
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    color: var(--text-dim);
}

.empty-state .icon {
    font-size: 64px;
    margin-bottom: 16px;
}

.detail-view {
    height: 100%;
}

.detail-grid {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: 24px;
    height: 100%;
}

.pdf-viewer-container {
    background: #000;
    border-radius: 16px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    border: 1px solid var(--border);
}

.view-header {
    background: var(--sidebar-bg);
    padding: 12px 20px;
    border-bottom: 1px solid var(--border);
}

.view-header h2 {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-dim);
    text-transform: uppercase;
}

iframe {
    flex: 1;
    width: 100%;
    height: 100%;
}

.metadata-container {
    display: flex;
    flex-direction: column;
    gap: 20px;
    overflow-y: auto;
}

.meta-section {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 20px;
}

.meta-section h3 {
    font-size: 13px;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 16px;
    font-weight: 700;
}

.fields-grid {
    display: grid;
    gap: 12px;
}

.field-row {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.field-label {
    font-size: 11px;
    color: var(--text-dim);
    text-transform: uppercase;
}

.field-value {
    font-size: 14px;
    background: rgba(0,0,0,0.2);
    padding: 8px 12px;
    border-radius: 8px;
    border: 1px solid var(--border);
}

/* Tables */
.table-wrapper {
    overflow-x: auto;
    border-radius: 8px;
    border: 1px solid var(--border);
}

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

th {
    background: rgba(0,0,0,0.3);
    text-align: left;
    padding: 10px;
    color: var(--text-dim);
}

td {
    padding: 10px;
    border-top: 1px solid var(--border);
}

/* Word Cloud */
.word-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.word-tag {
    background: rgba(56, 189, 248, 0.1);
    color: var(--accent);
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 12px;
    border: 1px solid rgba(56, 189, 248, 0.2);
}

.hint {
    font-style: italic;
    color: var(--text-dim);
}

/* Scrollbars */
::-webkit-scrollbar {
    width: 6px;
}
::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 10px;
}
::-webkit-scrollbar-track {
    background: transparent;
}