/* ============================================================
 * controls.css
 * 控制栏样式：底部两行控制栏、左上角提示、右上角功能按钮
 * ============================================================ */

/* ===== 浮层控制栏 ===== */
.controls {
    position: fixed;
    left: 50%;
    bottom: 18px;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding: 10px 16px;
    background: rgba(20, 20, 20, 0.72);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.12);
    border-radius: 12px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.45);
    z-index: 10;
    transition: opacity 0.25s ease, transform 0.25s ease;
    max-width: 98vw;
    width: fit-content;
}
.controls.hidden {
    opacity: 0;
    pointer-events: none;
    transform: translateX(-50%) translateY(20px);
}
.controls-row {
    display: flex;
    flex-wrap: nowrap;
    align-items: center;
    gap: 10px;
    justify-content: center;
    white-space: nowrap;
}
.controls label {
    font-size: 13px;
    color: #ccc;
    white-space: nowrap;
}
.controls select,
.controls button,
.controls input[type="range"] {
    background: rgba(255,255,255,0.08);
    color: #fff;
    border: 1px solid rgba(255,255,255,0.15);
    border-radius: 6px;
    padding: 5px 10px;
    font-size: 13px;
    outline: none;
}
.controls select:focus,
.controls button:focus {
    border-color: rgba(120,180,255,0.6);
}
.controls select option {
    background: #1e1e1e;
    color: #fff;
}
.controls select option:checked {
    background: #2d6cdf;
    color: #fff;
}
.controls button {
    cursor: pointer;
    transition: background 0.15s;
}
.controls button:hover {
    background: rgba(255,255,255,0.18);
}
.controls button.active {
    background: #2d6cdf;
    border-color: #5a8ef0;
}
.controls input[type="range"] {
    width: 110px;
    padding: 0;
    accent-color: #6ea8ff;
}
.controls .val {
    font-size: 12px;
    color: #9ec5ff;
    min-width: 32px;
    text-align: right;
}
.controls .divider {
    width: 1px;
    height: 22px;
    background: rgba(255,255,255,0.15);
    margin: 0 2px;
}

/* ===== 左上角信息 / 右上角按钮 ===== */
.top-left {
    position: fixed;
    top: 14px;
    left: 14px;
    font-size: 12px;
    color: rgba(255,255,255,0.6);
    z-index: 10;
    line-height: 1.8;
    transition: opacity 0.25s ease;
}
.top-right {
    position: fixed;
    top: 14px;
    right: 14px;
    display: flex;
    gap: 8px;
    z-index: 10;
}
.top-right button {
    background: rgba(20,20,20,0.6);
    color: #fff;
    border: 1px solid rgba(255,255,255,0.15);
    border-radius: 8px;
    padding: 6px 10px;
    font-size: 12px;
    cursor: pointer;
    backdrop-filter: blur(8px);
}
.top-right button:hover { background: rgba(255,255,255,0.16); }