:root {
    --bg: #f3f6fb;
    --panel: rgba(255, 255, 255, 0.95);
    --panel-soft: rgba(255, 255, 255, 0.75);
    --border: rgba(148, 163, 184, 0.24);
    --shadow: 0 18px 40px rgba(15, 23, 42, 0.08);
    --text: #0f172a;
    --muted: #64748b;
    --primary: #4f46e5;
    --primary-soft: rgba(79, 70, 229, 0.12);
    --success: #059669;
    --success-soft: rgba(5, 150, 105, 0.12);
    --warning: #d97706;
    --warning-soft: rgba(217, 119, 6, 0.12);
    --danger: #dc2626;
    --danger-soft: rgba(220, 38, 38, 0.12);
    --neutral-soft: rgba(15, 23, 42, 0.06);
    --radius-xl: 26px;
    --radius-lg: 18px;
    --radius-md: 14px;
    --radius-sm: 10px;
}

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

html, body {
    min-height: 100%;
}

body {
    font-family: 'Microsoft YaHei', 'Segoe UI', sans-serif;
    background:
        radial-gradient(circle at top left, rgba(79, 70, 229, 0.14), transparent 28%),
        radial-gradient(circle at bottom right, rgba(14, 165, 233, 0.10), transparent 24%),
        var(--bg);
    color: var(--text);
}

button, input, select {
    font: inherit;
}

button {
    border: none;
    background: none;
    cursor: pointer;
}

input, select {
    width: 100%;
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 12px 14px;
    background: #fff;
    color: var(--text);
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

input:focus, select:focus {
    outline: none;
    border-color: rgba(79, 70, 229, 0.55);
    box-shadow: 0 0 0 4px rgba(79, 70, 229, 0.12);
}

input[type="range"] {
    padding: 0;
    border: none;
    background: transparent;
    box-shadow: none;
}

input[type="range"]:focus {
    box-shadow: none;
}

[v-cloak] {
    display: none;
}

.shell {
    min-height: 100vh;
    display: grid;
    grid-template-columns: 300px minmax(0, 1fr);
    gap: 22px;
    padding: 20px;
}

.shell-sidebar,
.topbar-card,
.card-surface {
    background: var(--panel);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    backdrop-filter: blur(14px);
}

.shell-sidebar {
    border-radius: var(--radius-xl);
    padding: 22px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.brand-card {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 16px;
    border-radius: 20px;
    background: linear-gradient(135deg, rgba(79, 70, 229, 0.16), rgba(14, 165, 233, 0.10));
}

.brand-icon {
    width: 52px;
    height: 52px;
    border-radius: 16px;
    display: grid;
    place-items: center;
    font-size: 26px;
    background: rgba(255, 255, 255, 0.75);
}

.brand-title {
    font-size: 20px;
    font-weight: 700;
}

.brand-subtitle {
    margin-top: 4px;
    font-size: 13px;
    color: var(--muted);
}

.nav-menu {
    display: grid;
    gap: 10px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 16px;
    border-radius: 16px;
    text-align: left;
    transition: transform 0.2s ease, background 0.2s ease;
    color: var(--text);
}

.nav-item:hover {
    background: rgba(15, 23, 42, 0.04);
    transform: translateX(2px);
}

.nav-item.active {
    background: linear-gradient(135deg, rgba(79, 70, 229, 0.14), rgba(14, 165, 233, 0.10));
}

.nav-item span {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.nav-item strong {
    font-size: 15px;
}

.nav-item small {
    color: var(--muted);
    font-size: 12px;
}

.nav-item-icon {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.88);
    display: grid;
    place-items: center;
    flex-shrink: 0;
}

.sidebar-info-card {
    margin-top: auto;
    padding: 18px;
    border-radius: 18px;
    background: rgba(15, 23, 42, 0.04);
}

.mini-label,
.eyebrow {
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-size: 12px;
}

.sidebar-status {
    margin-top: 10px;
    font-weight: 700;
}

.sidebar-status.success { color: var(--success); }
.sidebar-status.warning { color: var(--warning); }
.sidebar-status.danger { color: var(--danger); }

.sidebar-meta {
    margin-top: 8px;
    color: var(--muted);
    font-size: 13px;
    line-height: 1.5;
}

.shell-main {
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.topbar-card {
    border-radius: var(--radius-xl);
    padding: 24px 28px;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 16px;
}

.topbar-card h1 {
    margin-top: 8px;
    font-size: 30px;
}

.topbar-desc {
    margin-top: 6px;
    color: var(--muted);
    max-width: 720px;
    line-height: 1.6;
}

.topbar-actions {
    display: flex;
    gap: 10px;
    align-items: center;
    flex-wrap: wrap;
    justify-content: flex-end;
}

.status-pill,
.hero-chip,
.overlay-chip,
.input-chip {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 14px;
    border-radius: 999px;
    font-size: 13px;
    background: rgba(15, 23, 42, 0.04);
}

.status-pill.success,
.hero-chip.success {
    color: var(--success);
    background: var(--success-soft);
}

.status-pill.warning,
.hero-chip.warning {
    color: var(--warning);
    background: var(--warning-soft);
}

.status-pill.danger,
.hero-chip.danger {
    color: var(--danger);
    background: var(--danger-soft);
}

.status-pill.neutral,
.overlay-chip.neutral {
    color: var(--text);
}

.page-stack,
.page-grid,
.dashboard-grid,
.metrics-grid,
.source-list-grid,
.risk-grid,
.form-grid,
.slider-stack,
.side-stack {
    display: grid;
    gap: 18px;
}

.page-grid-home {
    align-content: start;
}

.card-surface {
    border-radius: var(--radius-xl);
    padding: 24px;
}

.hero-card {
    display: grid;
    grid-template-columns: minmax(0, 1.7fr) minmax(280px, 1fr);
    gap: 18px;
}

.hero-card h2 {
    margin-top: 8px;
    font-size: 30px;
}

.hero-copy {
    margin-top: 12px;
    color: var(--muted);
    line-height: 1.7;
    max-width: 760px;
}

.hero-actions,
.button-row,
.panel-actions {
    display: flex;
    gap: 10px;
    align-items: center;
}

.hero-actions,
.wrap-row {
    flex-wrap: wrap;
}

.hero-side {
    display: grid;
    gap: 12px;
    align-content: start;
}

.hero-metric {
    padding: 14px 16px;
    border-radius: 16px;
    background: rgba(15, 23, 42, 0.04);
    display: grid;
    gap: 6px;
}

.hero-metric span,
.metric-label,
.detail-row span,
.risk-grid span,
.detection-item span,
.slider-card span,
.monitor-footnote,
.update-meta {
    color: var(--muted);
    font-size: 13px;
}

.hero-metric strong,
.metric-card strong,
.detail-row strong,
.risk-grid strong {
    font-size: 18px;
}

.metrics-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.metric-card {
    display: grid;
    gap: 8px;
}

.metric-card strong {
    font-size: 28px;
}

.metric-card small {
    color: var(--muted);
}

.dashboard-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.summary-card,
.side-card,
.control-card {
    align-content: start;
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 14px;
    margin-bottom: 18px;
}

.panel-header h3 {
    font-size: 20px;
    margin-bottom: 4px;
}

.panel-header p {
    color: var(--muted);
    line-height: 1.5;
}

.with-actions {
    align-items: center;
}

.detail-list {
    display: grid;
    gap: 12px;
}

.detail-row {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    align-items: center;
    padding: 12px 0;
    border-bottom: 1px solid rgba(148, 163, 184, 0.14);
}

.detail-row:last-child {
    border-bottom: none;
}

.risk-meter {
    display: grid;
    gap: 10px;
    margin-bottom: 16px;
}

.risk-track {
    width: 100%;
    height: 12px;
    border-radius: 999px;
    background: rgba(148, 163, 184, 0.22);
    overflow: hidden;
}

.risk-fill {
    height: 100%;
    width: 0;
    border-radius: inherit;
    background: linear-gradient(90deg, #22c55e, #f59e0b, #ef4444);
}

.risk-value {
    font-size: 20px;
    font-weight: 700;
}

.risk-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    margin-top: 16px;
}

.risk-grid.compact {
    margin-top: 14px;
}

.steps-list {
    padding-left: 20px;
    color: var(--muted);
    line-height: 1.8;
}

.monitor-grid {
    grid-template-columns: minmax(0, 1.7fr) minmax(320px, 0.95fr);
    align-items: start;
}

.monitor-stage-card {
    display: grid;
    gap: 16px;
}

.compact-wrap {
    flex-wrap: wrap;
    justify-content: flex-end;
}

.input-chip {
    gap: 10px;
    border-radius: 16px;
    padding: 8px 12px;
}

.input-chip label {
    font-size: 12px;
    color: var(--muted);
    white-space: nowrap;
}

.input-chip select {
    border: none;
    background: transparent;
    padding: 0;
    min-width: 180px;
}

.video-container {
    position: relative;
    width: 100%;
    aspect-ratio: var(--video-aspect-ratio, 16 / 9);
    max-height: min(76vh, 880px);
    min-height: 300px;
    overflow: hidden;
    border-radius: 24px;
    background: linear-gradient(180deg, #111827, #0f172a);
}

.video-container.portrait {
    max-width: min(100%, 680px);
    margin: 0 auto;
}

.video-container.landscape {
    max-width: 100%;
}

.video-container video,
.video-container canvas {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: contain;
    object-position: center center;
}

.video-container canvas {
    pointer-events: none;
}

.live-stage-overlay {
    position: absolute;
    left: 16px;
    top: 16px;
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    z-index: 2;
}

.overlay-chip {
    color: #fff;
    background: rgba(15, 23, 42, 0.58);
    backdrop-filter: blur(10px);
}

.monitor-footnote {
    line-height: 1.6;
}

.detection-list {
    display: grid;
    gap: 10px;
}

.detection-item,
.source-pick-card {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    padding: 14px 16px;
    border-radius: 16px;
    background: rgba(15, 23, 42, 0.04);
}

.detection-item strong {
    display: block;
    margin-bottom: 4px;
}

.tag-mini {
    min-width: 28px;
    height: 28px;
    border-radius: 999px;
    display: grid;
    place-items: center;
    background: rgba(79, 70, 229, 0.12);
    color: var(--primary);
    font-size: 12px;
    font-weight: 700;
}

.two-col-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.form-grid {
    gap: 14px;
}

.two-col-inputs {
    grid-template-columns: minmax(0, 1.1fr) minmax(220px, 0.9fr);
}

.input-stack {
    display: grid;
    gap: 10px;
}

.input-stack label {
    font-weight: 600;
}

.tip-box,
.source-state-board {
    padding: 16px;
    border-radius: 16px;
    background: rgba(15, 23, 42, 0.04);
}

.tip-box p {
    margin-top: 6px;
    color: var(--muted);
    line-height: 1.6;
}

.neutral-soft {
    background: var(--neutral-soft);
}

.source-list-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    margin-top: 18px;
}

.source-pick-card {
    text-align: left;
    border: 1px solid transparent;
    transition: transform 0.18s ease, border-color 0.18s ease, background 0.18s ease;
}

.source-pick-card:hover {
    transform: translateY(-1px);
}

.source-pick-card.active {
    border-color: rgba(79, 70, 229, 0.28);
    background: rgba(79, 70, 229, 0.08);
}

.source-pick-card span {
    color: var(--muted);
    font-size: 12px;
}

.source-state-board {
    display: grid;
    gap: 8px;
    margin-top: 18px;
}

.slider-stack {
    gap: 12px;
}

.slider-card {
    display: grid;
    gap: 12px;
    padding: 14px 16px;
    border-radius: 16px;
    background: rgba(15, 23, 42, 0.04);
}

.slider-card strong {
    font-size: 18px;
}

.btn,
.ghost-btn {
    height: 44px;
    padding: 0 18px;
    border-radius: 12px;
    font-weight: 600;
    transition: transform 0.18s ease, box-shadow 0.18s ease, opacity 0.18s ease;
}

.btn:hover,
.ghost-btn:hover,
.nav-item:hover,
.source-pick-card:hover {
    box-shadow: 0 12px 24px rgba(15, 23, 42, 0.08);
}

.btn:disabled,
.ghost-btn:disabled {
    opacity: 0.55;
    cursor: not-allowed;
    box-shadow: none;
}

.btn-primary {
    background: var(--primary);
    color: #fff;
}

.btn-secondary {
    background: var(--primary-soft);
    color: var(--primary);
}

.btn-success {
    background: var(--success);
    color: #fff;
}

.btn-danger {
    background: var(--danger);
    color: #fff;
}

.ghost-btn {
    background: rgba(15, 23, 42, 0.04);
    color: var(--text);
}

.empty-state-inline {
    padding: 18px;
    border-radius: 16px;
    background: rgba(15, 23, 42, 0.04);
    color: var(--muted);
    line-height: 1.6;
}

.ts-alert {
    padding: 14px 16px;
    border-radius: 16px;
    line-height: 1.6;
    margin-top: 12px;
}

.ts-warning {
    background: var(--warning-soft);
    color: #92400e;
}

.ts-info {
    background: rgba(59, 130, 246, 0.12);
    color: #1d4ed8;
}

.ts-low {
    background: rgba(245, 158, 11, 0.14);
    color: #92400e;
}

.ts-high {
    background: rgba(239, 68, 68, 0.14);
    color: #b91c1c;
}

.toast {
    position: fixed;
    right: 24px;
    bottom: 24px;
    min-width: 280px;
    max-width: 420px;
    padding: 16px 18px;
    border-radius: 16px;
    color: #fff;
    transform: translateY(110%);
    opacity: 0;
    transition: transform 0.22s ease, opacity 0.22s ease;
    z-index: 9999;
    box-shadow: 0 20px 40px rgba(15, 23, 42, 0.16);
}

.toast.show {
    transform: translateY(0);
    opacity: 1;
}

.toast-info { background: #334155; }
.toast-success { background: #059669; }
.toast-warning { background: #d97706; }
.toast-error { background: #dc2626; }

@media (max-width: 1380px) {
    .shell {
        grid-template-columns: 260px minmax(0, 1fr);
    }

    .metrics-grid,
    .dashboard-grid,
    .risk-grid,
    .source-list-grid,
    .two-col-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .monitor-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 980px) {
    .shell {
        grid-template-columns: 1fr;
        padding: 14px;
    }

    .shell-sidebar {
        order: 2;
    }

    .topbar-card,
    .card-surface,
    .shell-sidebar {
        border-radius: 20px;
    }

    .topbar-card,
    .hero-card,
    .two-col-inputs,
    .metrics-grid,
    .dashboard-grid,
    .two-col-grid,
    .risk-grid,
    .source-list-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 640px) {
    .topbar-card,
    .card-surface,
    .shell-sidebar {
        padding: 18px;
    }

    .topbar-card h1,
    .hero-card h2 {
        font-size: 24px;
    }

    .video-container {
        min-height: 220px;
        border-radius: 18px;
    }

    .toast {
        left: 14px;
        right: 14px;
        min-width: auto;
        max-width: none;
        bottom: 14px;
    }
}