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

body {
    background: #0a0a0f;
    color: #e0e0e0;
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    overflow: hidden;
}

#canvas-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

/* ── Mode switcher (top-left) ── */
#mode-switcher {
    position: fixed;
    top: 16px;
    left: 16px;
    background: rgba(10, 10, 20, 0.85);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 12px;
    padding: 12px 14px;
    z-index: 100;
    user-select: none;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.mode-label {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: #888;
    margin-bottom: 2px;
}

.mode-btn {
    padding: 6px 14px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 6px;
    color: #999;
    font-size: 12px;
    cursor: pointer;
    transition: all 0.15s;
    text-align: left;
}

.mode-btn:hover {
    background: rgba(255, 255, 255, 0.12);
    color: #ddd;
}

.mode-btn.active {
    background: rgba(100, 130, 255, 0.2);
    border-color: rgba(100, 130, 255, 0.4);
    color: #88aaff;
}

/* ── Burger toggle button (mobile only) ── */
#controls-toggle {
    display: none;
    position: fixed;
    top: 16px;
    right: 16px;
    z-index: 200;
    width: 40px;
    height: 40px;
    background: rgba(10, 10, 20, 0.85);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 8px;
    color: #e0e0e0;
    font-size: 20px;
    cursor: pointer;
    line-height: 1;
}

/* ── Controls panel ── */
#controls {
    position: fixed;
    top: 16px;
    right: 16px;
    width: 220px;
    background: rgba(10, 10, 20, 0.85);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 12px;
    padding: 16px;
    z-index: 100;
    user-select: none;
}

/* ── Mobile responsive ── */
@media (max-width: 768px) {
    #controls-toggle {
        display: flex;
        align-items: center;
        justify-content: center;
    }

    #controls {
        top: 0;
        right: 0;
        bottom: 0;
        width: 260px;
        border-radius: 0;
        overflow-y: auto;
        transform: translateX(100%);
        transition: transform 0.25s ease;
    }

    #controls.open {
        transform: translateX(0);
    }
}

#controls h2 {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 12px;
    color: #fff;
}

.section-label {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: #888;
    margin-top: 14px;
    margin-bottom: 6px;
}

.filter-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 4px 0;
    cursor: pointer;
    font-size: 13px;
}

.filter-item input[type="checkbox"] {
    accent-color: #6688ff;
    cursor: pointer;
}

.color-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    flex-shrink: 0;
}

/* ── Tooltip ── */
#tooltip {
    position: fixed;
    pointer-events: none;
    background: rgba(10, 10, 25, 0.92);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 8px;
    padding: 10px 14px;
    font-size: 13px;
    line-height: 1.5;
    z-index: 200;
    display: none;
    max-width: 240px;
}

#tooltip .tooltip-name {
    font-size: 18px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 0;
}

#tooltip .tooltip-fullname {
    font-size: 13px;
    color: #999;
    margin-bottom: 6px;
    text-transform: capitalize;
}

#tooltip .tooltip-row {
    color: #aaa;
}

#tooltip .tooltip-row span {
    color: #ddd;
}



/* ── Particle labels (CSS2D) ── */
/* ── Rotate buttons ── */
.rotate-row {
    display: flex;
    gap: 6px;
    margin-bottom: 8px;
}

.rotate-btn {
    flex: 1;
    padding: 5px 0;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 5px;
    color: #999;
    font-size: 11px;
    cursor: pointer;
    transition: all 0.15s;
}

.rotate-btn:hover {
    background: rgba(255, 255, 255, 0.12);
    color: #ddd;
}

.rotate-btn.active {
    background: rgba(100, 130, 255, 0.2);
    border-color: rgba(100, 130, 255, 0.4);
    color: #88aaff;
}

/* ── Reset button ── */
.reset-btn {
    width: 100%;
    margin-top: 12px;
    padding: 6px 0;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 6px;
    color: #ccc;
    font-size: 12px;
    cursor: pointer;
    transition: background 0.15s;
}

.reset-btn:hover {
    background: rgba(255, 255, 255, 0.15);
    color: #fff;
}

/* ── Navigation hint ── */
#nav-hint {
    position: fixed;
    bottom: 12px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(10, 10, 20, 0.7);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 8px;
    padding: 6px 16px;
    font-size: 11px;
    color: #777;
    z-index: 100;
    pointer-events: none;
    white-space: nowrap;
}

/* ── Particle labels (CSS2D) ── */
.particle-label {
    color: rgba(255, 255, 255, 0.7);
    font-size: 11px;
    font-weight: 600;
    font-family: 'Segoe UI', system-ui, sans-serif;
    pointer-events: none;
    white-space: nowrap;
    text-shadow: 0 0 4px rgba(0, 0, 0, 0.9);
}

.particle-label.overlap-interactive {
    pointer-events: auto;
    cursor: pointer;
    padding: 0 1px;
    line-height: 1;
    margin: 0;
}

.particle-label sub {
    font-size: 0.7em;
    vertical-align: baseline;
    position: relative;
    top: 0.3em;
}

.particle-label .overbar {
    text-decoration: overline;
    text-decoration-thickness: 1.5px;
    text-underline-offset: -0.1em;
}

/* ── Zoomed Info Overlay ── */
#zoomed-info {
    position: fixed;
    top: 24px;
    right: 24px;
    bottom: 24px;
    width: 380px;
    max-width: 90%;
    padding: 32px;
    background: rgba(10, 10, 15, 0.55);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    color: #fff;
    z-index: 300;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.3s ease;
    text-align: left;
    display: flex;
    flex-direction: column;
    overflow-y: auto;
}

#zoomed-info.visible {
    opacity: 1;
    pointer-events: auto;
}

#close-zoom {
    position: absolute;
    top: 16px;
    right: 16px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.15);
    color: #fff;
    font-size: 20px;
    width: 32px;
    height: 32px;
    cursor: pointer;
    line-height: 1;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s, transform 0.2s;
}

#close-zoom:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: scale(1.05);
}

#zoomed-content .zoom-name {
    font-size: 38px;
    font-weight: 800;
    margin-bottom: 4px;
    margin-top: 10px;
    color: #fce883;
    text-shadow: 0 0 15px rgba(252, 232, 131, 0.3);
}

#zoomed-content .zoom-fullname {
    font-size: 15px;
    color: #aaa;
    margin-bottom: 24px;
    text-transform: capitalize;
    letter-spacing: 0.05em;
}

#zoomed-content .zoom-row {
    font-size: 15px;
    margin: 12px 0;
    color: rgba(255, 255, 255, 0.7);
    padding: 12px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 8px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

#zoomed-content .zoom-row span {
    font-weight: 600;
    color: #fff;
    background: rgba(255, 255, 255, 0.1);
    padding: 4px 10px;
    border-radius: 6px;
}