:root {
    --bg-main: #0b0f19;
    --bg-card: #131b2e;
    --bg-card-hover: #19243d;
    --border-color: #232f48;
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --accent-blue: #3b82f6;
    --accent-blue-hover: #2563eb;
    --accent-purple: #8b5cf6;
    --accent-green: #10b981;
    --accent-amber: #f59e0b;
    --accent-rose: #f43f5e;
    --font-sans: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
}

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

body {
    background-color: var(--bg-main);
    color: var(--text-primary);
    font-family: var(--font-sans);
    line-height: 1.5;
    min-height: 100vh;
}

.app-wrapper {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* Navbar */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 32px;
    background: #0f172a;
    border-bottom: 1px solid var(--border-color);
}

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

.brand-icon {
    width: 44px;
    height: 44px;
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    box-shadow: 0 0 15px rgba(59, 130, 246, 0.4);
}

.nav-brand h1 {
    font-size: 19px;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: #fff;
}

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

.nav-status {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 13px;
    color: var(--text-secondary);
}

.status-indicator {
    width: 9px;
    height: 9px;
    border-radius: 50%;
}

.status-indicator.online {
    background: var(--accent-green);
    box-shadow: 0 0 8px var(--accent-green);
}

.badge-port {
    background: #1e293b;
    color: #38bdf8;
    border: 1px solid #334155;
    padding: 4px 10px;
    border-radius: 20px;
    font-family: var(--font-mono);
    font-size: 12px;
}

/* Metrics Strip */
.metrics-strip {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    padding: 16px 32px;
    background: #0b1329;
    border-bottom: 1px solid var(--border-color);
}

.metric-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 14px 18px;
    border-radius: 10px;
    display: flex;
    flex-direction: column;
}

.metric-label {
    font-size: 12px;
    font-weight: 500;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 4px;
}

.metric-val {
    font-size: 24px;
    font-weight: 800;
    color: #fff;
}

.metric-val.highlight {
    color: var(--accent-green);
}

/* Main Content Grid */
.main-content {
    display: grid;
    grid-template-columns: 280px 1fr 320px;
    gap: 24px;
    padding: 24px 32px;
    flex: 1;
}

/* Sidebar Left */
.sidebar {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.panel-section h3 {
    font-size: 13px;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 12px;
    letter-spacing: 0.04em;
}

.domain-filters {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.domain-btn {
    background: transparent;
    border: 1px solid transparent;
    color: var(--text-secondary);
    padding: 10px 14px;
    border-radius: 8px;
    text-align: left;
    font-family: var(--font-sans);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

.domain-btn:hover {
    background: var(--bg-card);
    color: #fff;
}

.domain-btn.active {
    background: #1e293b;
    border-color: var(--accent-blue);
    color: #fff;
    font-weight: 600;
}

.sample-queries {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.sample-query-pill {
    background: #131b2e;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 10px 12px;
    border-radius: 8px;
    font-size: 12px;
    cursor: pointer;
    text-align: left;
    transition: all 0.2s;
    line-height: 1.4;
}

.sample-query-pill:hover {
    background: #1a253e;
    border-color: var(--accent-blue);
    color: #fff;
}

.info-card {
    background: #101726;
    border: 1px dashed var(--border-color);
    padding: 14px;
    border-radius: 8px;
    font-size: 12px;
    color: var(--text-muted);
}

.info-card h4 {
    color: var(--text-secondary);
    margin-bottom: 6px;
}

.info-card code {
    background: #1e293b;
    color: #38bdf8;
    padding: 2px 6px;
    border-radius: 4px;
    font-family: var(--font-mono);
}

/* Center Resolution Area */
.resolution-area {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.query-box-container {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 8px;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.input-wrapper {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 4px 8px;
}

.search-icon {
    font-size: 18px;
    margin-left: 6px;
    color: var(--text-muted);
}

#queryInput {
    flex: 1;
    background: transparent;
    border: none;
    outline: none;
    color: #fff;
    font-family: var(--font-sans);
    font-size: 15px;
}

#queryInput::placeholder {
    color: var(--text-muted);
}

.btn-resolve {
    background: var(--accent-blue);
    color: white;
    border: none;
    padding: 12px 20px;
    border-radius: 8px;
    font-family: var(--font-sans);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s, transform 0.1s;
    white-space: nowrap;
}

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

.btn-resolve:active {
    transform: scale(0.98);
}

/* Loading State */
.loading-state {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 30px;
    border-radius: 12px;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.spinner {
    width: 32px;
    height: 32px;
    border: 3px solid #1e293b;
    border-top-color: var(--accent-blue);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Action Alert Toast */
.action-alert {
    background: #064e3b;
    color: #a7f3d0;
    border: 1px solid #059669;
    padding: 12px 18px;
    border-radius: 8px;
    font-size: 13px;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-5px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Resolution Card */
.resolution-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 24px;
    box-shadow: 0 4px 25px rgba(0, 0, 0, 0.4);
    display: flex;
    flex-direction: column;
    gap: 16px;
    position: relative;
    overflow: hidden;
}

.resolution-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-blue), var(--accent-purple));
}

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

.card-meta {
    display: flex;
    gap: 8px;
}

.badge {
    padding: 4px 10px;
    border-radius: 6px;
    font-size: 11px;
    font-weight: 600;
}

.badge-domain {
    background: #1e3a8a;
    color: #93c5fd;
    border: 1px solid #2563eb;
}

.badge-id {
    background: #1e293b;
    color: #cbd5e1;
    font-family: var(--font-mono);
}

.card-confidence {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    color: var(--text-muted);
}

.confidence-pill {
    background: #064e3b;
    color: #34d399;
    padding: 2px 10px;
    border-radius: 12px;
    font-weight: 700;
    font-size: 12px;
    border: 1px solid #059669;
}

.res-title {
    font-size: 20px;
    font-weight: 700;
    color: #fff;
}

.res-summary {
    font-size: 14px;
    color: var(--text-secondary);
    background: #0b1329;
    padding: 12px 16px;
    border-radius: 8px;
    border-left: 3px solid var(--accent-blue);
}

.res-body h4, .action-bar h4 {
    font-size: 13px;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--text-muted);
    letter-spacing: 0.04em;
    margin-bottom: 10px;
}

.step-list {
    padding-left: 20px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.step-list li {
    font-size: 14px;
    color: #e2e8f0;
}

.step-list li::marker {
    color: var(--accent-blue);
    font-weight: bold;
}

.action-bar {
    background: #0d1527;
    border: 1px solid var(--border-color);
    padding: 14px;
    border-radius: 8px;
}

.actions-group {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.action-btn {
    background: #1e293b;
    color: #f1f5f9;
    border: 1px solid #334155;
    padding: 8px 16px;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: all 0.2s;
}

.action-btn:hover {
    background: var(--accent-blue);
    border-color: var(--accent-blue);
    color: #fff;
}

.action-btn.escalate {
    background: #451a1a;
    border-color: #7f1d1d;
    color: #fca5a5;
}

.action-btn.escalate:hover {
    background: #b91c1c;
    border-color: #b91c1c;
    color: #fff;
}

.card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid var(--border-color);
    padding-top: 14px;
    font-size: 13px;
    flex-wrap: wrap;
    gap: 12px;
}

.doc-reference a {
    color: #38bdf8;
    text-decoration: none;
    font-weight: 500;
}

.doc-reference a:hover {
    text-decoration: underline;
}

.feedback-container {
    display: flex;
    align-items: center;
    gap: 10px;
}

.feedback-btn {
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: opacity 0.2s;
}

.feedback-btn:hover {
    opacity: 0.85;
}

.btn-yes {
    background: var(--accent-green);
    color: #fff;
}

.btn-no {
    background: #334155;
    color: var(--text-secondary);
}

/* Empty State */
.empty-state {
    background: var(--bg-card);
    border: 1px dashed var(--border-color);
    padding: 50px 30px;
    border-radius: 12px;
    text-align: center;
}

.empty-icon {
    font-size: 44px;
    margin-bottom: 12px;
}

.empty-state h3 {
    font-size: 17px;
    color: #fff;
    margin-bottom: 6px;
}

.empty-state p {
    font-size: 13px;
    color: var(--text-muted);
    max-width: 440px;
    margin: 0 auto;
}

/* History */
.history-section h3 {
    font-size: 14px;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 12px;
}

.history-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.history-item {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 10px 14px;
    border-radius: 8px;
    font-size: 13px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.history-item span {
    color: var(--text-secondary);
}

/* Right Panel: Knowledge Base Browser */
.kb-browser {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 18px;
    display: flex;
    flex-direction: column;
    height: fit-content;
    max-height: calc(100vh - 180px);
}

.kb-header h3 {
    font-size: 14px;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 10px;
}

.kb-search {
    width: 100%;
    background: #0b1329;
    border: 1px solid var(--border-color);
    padding: 8px 12px;
    border-radius: 6px;
    color: #fff;
    font-size: 13px;
    margin-bottom: 14px;
    outline: none;
}

.kb-search:focus {
    border-color: var(--accent-blue);
}

.article-list {
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.article-card {
    background: #0d1527;
    border: 1px solid var(--border-color);
    padding: 12px;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s;
}

.article-card:hover {
    border-color: var(--accent-blue);
    background: #141f38;
}

.article-card h5 {
    font-size: 13px;
    font-weight: 600;
    color: #f1f5f9;
    margin-bottom: 4px;
}

.article-card p {
    font-size: 11px;
    color: var(--text-muted);
    line-height: 1.4;
}

.article-domain {
    font-size: 10px;
    color: #38bdf8;
    text-transform: uppercase;
    margin-top: 6px;
    display: inline-block;
    font-weight: 600;
}

/* Responsive */
@media (max-width: 1100px) {
    .main-content {
        grid-template-columns: 1fr;
    }
    .metrics-strip {
        grid-template-columns: repeat(2, 1fr);
    }
}