/* ===== 思维导图 ===== */
.mindmap-main {
    max-width: 1280px;
}

.mindmap-hero {
    margin-bottom: 1.25rem;
}

.mindmap-section {
    margin-bottom: 2.5rem;
}

.mindmap-section:fullscreen,
.mindmap-section:-webkit-full-screen {
    box-sizing: border-box;
    width: 100%;
    height: 100%;
    margin: 0;
    padding: 1rem 1.25rem 1.25rem;
    display: flex;
    flex-direction: column;
    background:
        radial-gradient(circle at 18% 15%, color-mix(in srgb, var(--cyan) 16%, transparent), transparent 42%),
        radial-gradient(circle at 82% 78%, color-mix(in srgb, var(--purple, #7B2FFF) 14%, transparent), transparent 45%),
        var(--bg, #0b1220);
}

.mindmap-section:fullscreen .mindmap-toolbar,
.mindmap-section:-webkit-full-screen .mindmap-toolbar {
    flex-shrink: 0;
}

.mindmap-section:fullscreen .mindmap-workspace,
.mindmap-section:-webkit-full-screen .mindmap-workspace {
    flex: 1;
    min-height: 0;
}

.mindmap-section:fullscreen .mindmap-viewport,
.mindmap-section:-webkit-full-screen .mindmap-viewport {
    min-height: 0;
    height: 100%;
}

.mindmap-section:fullscreen .mindmap-side,
.mindmap-section:-webkit-full-screen .mindmap-side {
    max-height: 100%;
    overflow: auto;
}

.mindmap-toolbar {
    display: flex;
    flex-wrap: wrap;
    gap: .65rem 1rem;
    align-items: center;
    margin-bottom: .85rem;
    padding: .75rem .9rem;
    background: var(--bg-card, rgba(255,255,255,.04));
    border: 1px solid var(--border);
    border-radius: 12px;
}

.mindmap-board-bar {
    display: flex;
    flex-wrap: wrap;
    gap: .5rem;
    align-items: center;
    margin-bottom: .75rem;
    padding: .7rem .9rem;
    background: var(--bg-card, rgba(255,255,255,.04));
    border: 1px solid var(--border);
    border-radius: 12px;
}

.mindmap-board-label {
    font-size: .8rem;
    font-weight: 700;
    color: var(--text-secondary);
    margin-right: .15rem;
}

.mindmap-board-select {
    min-width: 160px;
    max-width: 240px;
    height: 32px;
    padding: 0 .55rem;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: rgba(0,0,0,.22);
    color: var(--text-primary);
    font-size: .8rem;
    font-weight: 600;
    outline: none;
}

.mindmap-board-select:focus {
    border-color: var(--cyan);
}

.mindmap-board-name {
    flex: 1 1 160px;
    min-width: 140px;
    max-width: 280px;
    height: 32px;
    padding: 0 .7rem;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: rgba(0,0,0,.22);
    color: var(--text-primary);
    font-size: .82rem;
    font-weight: 600;
    outline: none;
}

.mindmap-board-name:focus {
    border-color: var(--cyan);
    box-shadow: 0 0 0 1px color-mix(in srgb, var(--cyan) 35%, transparent);
}

.mindmap-section:fullscreen .mindmap-board-bar,
.mindmap-section:-webkit-full-screen .mindmap-board-bar {
    flex-shrink: 0;
}

.mindmap-toolbar-group {
    display: flex;
    flex-wrap: wrap;
    gap: .45rem;
}

.mindmap-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 32px;
    padding: .35rem .75rem;
    font-size: .8rem;
    font-weight: 600;
    color: var(--text-secondary);
    background: rgba(0,0,0,.22);
    border: 1px solid var(--border);
    border-radius: 8px;
    cursor: pointer;
    transition: color .2s, border-color .2s, background .2s, transform .15s;
    user-select: none;
}

.mindmap-btn:hover {
    color: var(--cyan);
    border-color: var(--cyan);
    background: var(--cyan-subtle);
}

.mindmap-btn:disabled {
    opacity: .4;
    cursor: not-allowed;
    pointer-events: none;
}

.mindmap-color-group {
    align-items: center;
}

.mindmap-swatches {
    display: inline-flex;
    flex-wrap: wrap;
    gap: .3rem;
    align-items: center;
}

.mindmap-swatch {
    width: 22px;
    height: 22px;
    border-radius: 6px;
    border: 2px solid rgba(255,255,255,.35);
    cursor: pointer;
    padding: 0;
    transition: transform .12s, box-shadow .12s;
}

.mindmap-swatch:hover {
    transform: scale(1.08);
    box-shadow: 0 0 0 2px rgba(255,255,255,.25);
}

.mindmap-swatch.is-active {
    box-shadow: 0 0 0 2px #fff;
}

.mindmap-color-picker {
    width: 32px;
    height: 28px;
    padding: 0;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: transparent;
    cursor: pointer;
}

.mindmap-btn-primary {
    color: #0b1220;
    background: linear-gradient(135deg, var(--cyan), #38bdf8);
    border-color: transparent;
}

.mindmap-btn-primary:hover {
    color: #0b1220;
    filter: brightness(1.05);
}

.mindmap-btn-danger:hover {
    color: #ff6b9d;
    border-color: #ff6b9d;
    background: rgba(255,107,157,.12);
}

.mindmap-btn-file {
    position: relative;
    overflow: hidden;
}

.mindmap-workspace {
    display: grid;
    grid-template-columns: 1fr 220px;
    gap: .9rem;
    min-height: 560px;
}

.mindmap-viewport {
    position: relative;
    overflow: hidden;
    min-height: 560px;
    border: 1px solid var(--border);
    border-radius: 14px;
    background:
        radial-gradient(circle at 20% 20%, rgba(0,212,255,.08), transparent 40%),
        radial-gradient(circle at 80% 70%, rgba(123,47,255,.08), transparent 42%),
        linear-gradient(180deg, rgba(255,255,255,.03), rgba(0,0,0,.12));
    cursor: grab;
    outline: none;
}

.mindmap-viewport:focus {
    border-color: color-mix(in srgb, var(--cyan) 55%, var(--border));
    box-shadow: 0 0 0 1px color-mix(in srgb, var(--cyan) 35%, transparent);
}

.mindmap-viewport.is-panning,
.mindmap-viewport.is-dragging-node {
    cursor: grabbing;
}

.mindmap-viewport.is-space-pan {
    cursor: grab;
}

.mindmap-viewport.is-space-pan.is-panning {
    cursor: grabbing;
}

.mindmap-viewport.is-marquee {
    cursor: crosshair;
}

.mindmap-canvas-el {
    display: block;
    width: 100%;
    height: 100%;
    position: absolute;
    inset: 0;
    touch-action: none;
}

.mindmap-edit-input {
    position: absolute;
    z-index: 5;
    box-sizing: border-box;
    margin: 0;
    padding: 0 .7rem;
    border: 2px solid #38bdf8;
    border-radius: 10px;
    color: #f8fafc;
    font-weight: 600;
    font-family: "Microsoft YaHei", "PingFang SC", sans-serif;
    text-align: center;
    outline: none;
    box-shadow: 0 0 0 2px rgba(56, 189, 248, .45), 0 10px 24px rgba(0, 0, 0, .35);
    caret-color: #fff;
}

.mindmap-edit-input[hidden] {
    display: none !important;
}

.mindmap-side {
    padding: 1rem;
    border: 1px solid var(--border);
    border-radius: 14px;
    background: var(--bg-card, rgba(255,255,255,.03));
}

.mindmap-side-title {
    margin: 0 0 .75rem;
    font-size: .92rem;
    color: var(--text-primary);
}

.mindmap-tips {
    margin: 0;
    padding: 0;
    list-style: none;
    display: grid;
    gap: .55rem;
}

.mindmap-tips li {
    font-size: .8rem;
    color: var(--text-secondary);
    line-height: 1.45;
}

.mindmap-tips kbd {
    display: inline-block;
    min-width: 2.4rem;
    padding: .1rem .35rem;
    margin-right: .25rem;
    border: 1px solid var(--border);
    border-radius: 5px;
    background: rgba(0,0,0,.25);
    color: var(--cyan);
    font-size: .72rem;
    font-family: inherit;
    text-align: center;
}

.mindmap-side-note {
    margin: 1rem 0 0;
    padding-top: .85rem;
    border-top: 1px solid var(--border);
    font-size: .75rem;
    color: var(--text-muted);
    line-height: 1.5;
}

@media (max-width: 900px) {
    .mindmap-workspace {
        grid-template-columns: 1fr;
    }

    .mindmap-viewport {
        min-height: 480px;
    }

    .mindmap-side {
        order: -1;
    }
}

@media (max-width: 600px) {
    .mindmap-toolbar {
        padding: .65rem;
    }

    .mindmap-btn {
        font-size: .75rem;
        padding: .3rem .55rem;
    }
}