/* ===== GAP3D Section View (切面) ===== */

/* 側邊欄控制區 */
.Sectionwhite-background {
    background-color: white;
    border: 1px solid #ced4da;
    border-radius: 5px;
    width: 190px;
    padding: 8px;
    margin-top: 12px;
    margin-bottom: 10px;
    color: #333;
}

.Sectionwhite-background .section-heading {
    display: block;
    font-weight: 600;
    margin-bottom: 6px;
}

#sectionAxis {
    width: 100%;
    border: 1px solid #ced4da;
    border-radius: 5px;
    margin-bottom: 8px;
    font-size: 13px;
}

.section-index-row {
    display: flex;
    align-items: center;
    gap: 4px;
}

.section-index-row input[type="range"] {
    flex: 1;
    min-width: 0;
}

.section-step-btn {
    border: 1px solid #ced4da;
    background: #fff;
    border-radius: 4px;
    width: 22px;
    height: 22px;
    line-height: 18px;
    padding: 0;
    cursor: pointer;
}

.section-step-btn:disabled {
    cursor: not-allowed;
    opacity: .4;
}

#sectionIndexLabel {
    font-size: 12px;
    color: #555;
    margin: 4px 0 6px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.section-open-btn {
    width: 100%;
    margin-top: 6px;
    padding: 4px 6px;
    border: 1px solid #85a3f5;
    background: #f3f5ff;
    color: #2a4ab5;
    border-radius: 5px;
    font-size: 13px;
    cursor: pointer;
}

.section-open-btn:hover {
    background: #e3e9ff;
}

.section-open-btn.secondary {
    border-color: #ced4da;
    background: #fff;
    color: #333;
}

.section-open-btn:disabled {
    cursor: not-allowed;
    opacity: .5;
}

.section-hint {
    font-size: 11px;
    color: #888;
    margin-top: 6px;
    line-height: 1.35;
    white-space: normal;
}

/* 浮動視窗 */
.floating-window.section-window {
    flex-direction: column;
    overflow: hidden;
    min-width: 260px;
    min-height: 120px;
}

.section-window-header {
    display: flex;
    align-items: center;
    gap: 6px;
    flex: 0 0 auto;
}

.section-window-title {
    flex: 1;
    min-width: 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.section-window-btns {
    display: flex;
    gap: 2px;
    flex: 0 0 auto;
}

.section-btn {
    border: none;
    background: transparent;
    font-size: 16px;
    line-height: 1;
    width: 24px;
    height: 24px;
    padding: 0;
    border-radius: 4px;
    cursor: pointer;
    color: #555;
}

.section-btn:hover {
    background: #e6e9f5;
}

.section-body {
    position: relative;
    flex: 1 1 auto;
    min-height: 0;
    overflow: hidden;
}

.section-canvas {
    display: block;
}

.section-tooltip {
    position: absolute;
    display: none;
    pointer-events: none;
    background: rgba(255, 255, 255, .96);
    border: 1px solid #ccc;
    border-radius: 4px;
    padding: 5px 8px;
    font-size: 12px;
    line-height: 1.45;
    box-shadow: 0 2px 6px rgba(0, 0, 0, .15);
    white-space: nowrap;
    z-index: 5;
}

/* 連動 (Linked) 狀態 */
.section-btn.active {
    background: #e3e9ff;
}
.section-btn:not(.active)[title^="Locked"] {
    opacity: .45;
}

/* GAP 控制面板樣式由 js/section_gap.js (PANEL_CSS) 注入 */