:root {
    --purple: #8b5cf6;
    --pink: #ec4899;
    --orange: #fb923c;
    --text: #111827;
    --muted: #6b7280;
    --line: #e5e7eb;
    --panel: rgba(255, 255, 255, 0.96);
    --shadow: 0 18px 48px rgba(15, 23, 42, 0.14);
}

* { box-sizing: border-box; }
.hidden { display: none !important; }
html { scroll-behavior: smooth; }
body.launcher-body {
    margin: 0;
    min-height: 100vh;
    font-family: 'Inter', sans-serif;
    color: var(--text);
    background: linear-gradient(135deg, #7c3aed 0%, #ec4899 58%, #fb923c 100%);
}
button, a { font: inherit; }
code {
    padding: 0.16rem 0.42rem;
    border-radius: 0.45rem;
    background: rgba(139, 92, 246, 0.08);
}

.launcher-shell {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.main-header {
    height: 4rem;
    padding: 0 1rem;
    background: #fff;
    box-shadow: 0 10px 30px rgba(15, 23, 42, 0.12);
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 40;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 0.85rem;
}

.header-left h1 {
    margin: 0;
    font-size: 1.25rem;
    font-weight: 800;
    background: linear-gradient(90deg, var(--purple), var(--pink));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.header-left p {
    margin: 0.15rem 0 0;
    color: var(--muted);
    font-size: 0.88rem;
}

.icon-circle {
    width: 2.6rem;
    height: 2.6rem;
    border: 0;
    border-radius: 999px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: white;
    background: linear-gradient(135deg, var(--purple), var(--pink));
}

.gradient-button {
    border: 0;
    border-radius: 0.95rem;
    padding: 0.75rem 1rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.45rem;
    text-decoration: none;
    cursor: pointer;
    transition: transform 0.2s ease, opacity 0.2s ease;
    color: white;
    background: linear-gradient(135deg, var(--purple), var(--pink));
}

.gradient-button:hover,
.version-tile:hover {
    transform: translateY(-1px);
}

.app-layout {
    display: grid;
    grid-template-columns: 23rem minmax(0, 1fr);
    gap: 1rem;
    padding: 1rem;
    min-height: calc(100vh - 4rem);
}

.sidebar, .stage, .info-card, .empty-box {
    background: var(--panel);
    border: 1px solid rgba(255, 255, 255, 0.68);
    box-shadow: var(--shadow);
}

.sidebar, .stage {
    border-radius: 1.5rem;
    overflow: hidden;
}

.sidebar {
    padding: 1rem;
    display: flex;
    flex-direction: column;
    min-height: 0;
}

.sidebar-top {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 0.95rem;
}

.sidebar-top h2, .stage-head h2, .empty-box h2, .empty-box h3 {
    margin: 0;
}

.sidebar-top p, .empty-box p, .tile-copy p {
    color: var(--muted);
}

.version-count {
    min-width: 2.25rem;
    height: 2.25rem;
    border-radius: 999px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: #ede9fe;
    color: #7c3aed;
    font-weight: 800;
}

.version-stack {
    display: grid;
    gap: 0.9rem;
    overflow: auto;
    padding-right: 0.15rem;
}

.version-tile {
    width: 100%;
    border: 0;
    border-radius: 1.25rem;
    padding: 0;
    background: #fff;
    box-shadow: 0 14px 34px rgba(15, 23, 42, 0.08);
    overflow: hidden;
    cursor: pointer;
    text-align: left;
}

.version-tile.active {
    outline: 2px solid rgba(139, 92, 246, 0.42);
    box-shadow: 0 18px 44px rgba(139, 92, 246, 0.18);
}

.tile-shot {
    position: relative;
    height: 10.7rem;
    overflow: hidden;
    background: linear-gradient(135deg, #ede9fe, #fce7f3);
}

.shot-scale {
    position: absolute;
    inset: 0;
    overflow: hidden;
    background: white;
}

.shot-scale iframe {
    width: 1440px;
    height: 980px;
    border: 0;
    transform: scale(0.24);
    transform-origin: top left;
    pointer-events: none;
    background: white;
}

.shot-fallback {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.35rem;
    text-align: center;
    padding: 1rem;
    color: #7c3aed;
}

.shot-fallback .material-symbols-outlined {
    font-size: 2rem;
}

.shot-fallback small {
    color: var(--muted);
    max-width: 26ch;
}

.live-dot {
    position: absolute;
    top: 0.8rem;
    right: 0.8rem;
    width: 0.75rem;
    height: 0.75rem;
    border-radius: 999px;
    border: 3px solid white;
}

.live-dot.is-live { background: #10b981; }
.live-dot.is-offline { background: #ef4444; }

.tile-copy {
    padding: 0.9rem 1rem 1rem;
}

.tile-title-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.8rem;
}

.tile-title-row h3 {
    margin: 0;
    font-size: 1rem;
}

.tile-state, .tree-type {
    display: inline-flex;
    align-items: center;
    padding: 0.34rem 0.68rem;
    border-radius: 999px;
    background: #f3f4f6;
    color: #4b5563;
    font-size: 0.75rem;
    font-weight: 700;
}

.tile-copy p {
    margin: 0.75rem 0 0;
    line-height: 1.55;
}

.stage {
    padding: 1rem;
    overflow: auto;
}

.stage-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 1rem 1.15rem;
    border-radius: 1.35rem;
    background: linear-gradient(135deg, rgba(255,255,255,0.97), rgba(249,250,251,0.92));
    box-shadow: var(--shadow);
    margin-bottom: 1rem;
}

.stage-head h2 {
    margin: 0;
    font-size: clamp(1.8rem, 3vw, 2.45rem);
    letter-spacing: -0.03em;
}

.top-metrics {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.85rem;
    margin-bottom: 1rem;
}

.metric-card {
    background: #fff;
    border-radius: 1.1rem;
    padding: 0.95rem 1rem;
    box-shadow: 0 10px 28px rgba(15, 23, 42, 0.08);
    text-align: center;
}

.metric-card span {
    display: block;
    color: var(--muted);
    font-size: 0.82rem;
    margin-bottom: 0.35rem;
    text-align: center;
}

.metric-card strong {
    font-size: 1.15rem;
    display: block;
    text-align: center;
}

.preview-shell {
    background: #fff;
    border-radius: 1.35rem;
    overflow: hidden;
    box-shadow: var(--shadow);
    margin-bottom: 1rem;
}

.preview-frame-wrap {
    min-height: 44rem;
    background: #fff;
}

.preview-frame-wrap iframe {
    width: 100%;
    min-height: 44rem;
    border: 0;
    background: white;
}

.preview-error {
    min-height: 44rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.65rem;
    text-align: center;
    color: var(--muted);
    padding: 1.5rem;
}

.preview-error .material-symbols-outlined {
    font-size: 2.5rem;
    color: #ef4444;
}

.info-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(340px, 0.9fr);
    gap: 1rem;
}

.info-grid.single-column {
    grid-template-columns: 1fr;
}

.info-card {
    border-radius: 1.35rem;
    padding: 1rem;
}

.tree-view {
    margin-top: 0.9rem;
    display: grid;
    gap: 0.45rem;
    max-height: 26rem;
    overflow: auto;
}

.tree-item {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) auto;
    gap: 0.65rem;
    align-items: center;
    padding: 0.65rem 0.8rem;
    border-radius: 0.95rem;
    background: #f8fafc;
}

.tree-name, .tree-size {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.tree-size {
    color: var(--muted);
    font-size: 0.84rem;
}

.depth-1 { margin-left: 0.75rem; }
.depth-2 { margin-left: 1.5rem; }
.depth-3 { margin-left: 2.25rem; }
.depth-4 { margin-left: 3rem; }
.depth-5 { margin-left: 3.75rem; }

.log-view {
    margin: 0;
    min-height: 18rem;
    max-height: 28rem;
    overflow: auto;
    padding: 1rem;
    border-radius: 1rem;
    background: #111827;
    color: #f9fafb;
    white-space: pre-wrap;
    line-height: 1.45;
    font-family: Consolas, "Courier New", monospace;
    font-size: 0.88rem;
}

.empty-box {
    border-radius: 1.3rem;
    padding: 1.2rem;
}

.big-empty {
    min-height: 14rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.empty-chooser {
    align-items: center;
    text-align: center;
    gap: 0.85rem;
    padding: 2rem 1.5rem;
}

.empty-chooser h2 {
    font-size: clamp(1.5rem, 2vw, 2rem);
    letter-spacing: -0.03em;
}

.empty-chooser p {
    max-width: 34rem;
    margin: 0;
    line-height: 1.65;
}

.empty-chooser-icon {
    width: 4.25rem;
    height: 4.25rem;
    border-radius: 1.25rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.16), rgba(236, 72, 153, 0.14));
    color: #7c3aed;
    box-shadow: inset 0 0 0 1px rgba(139, 92, 246, 0.12);
}

.empty-chooser-icon .material-symbols-outlined {
    font-size: 2rem;
}

@media (max-width: 1200px) {
    .app-layout, .info-grid, .top-metrics {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 760px) {
    .main-header, .stage-head {
        height: auto;
        padding-top: 1rem;
        padding-bottom: 1rem;
        flex-direction: column;
        align-items: stretch;
    }

    .app-layout {
        padding: 0.75rem;
    }

    .sidebar, .stage {
        padding: 0.85rem;
    }

    .preview-frame-wrap, .preview-frame-wrap iframe, .preview-error {
        min-height: 30rem;
    }

    .tree-item {
        grid-template-columns: 1fr;
    }
}