/* 夏夜美颜相机 · 页面样式（与站点玻璃拟态风格保持一致） */

.beauty-page {
    margin: 0;
    min-height: 100vh;
    background: linear-gradient(160deg, #fff5f7 0%, #f6f2ff 45%, #eef6ff 100%);
    color: #1E293B;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
    display: flex;
    flex-direction: column;
}

.bt-header {
    padding: 16px 24px 6px;
    max-width: 1360px;
    margin: 0 auto;
    width: 100%;
    box-sizing: border-box;
}
.bt-back {
    display: inline-block;
    font-size: 0.85rem;
    color: #78716C;
    text-decoration: none;
    margin-bottom: 4px;
    transition: color .2s;
}
.bt-back:hover { color: #DB2777; }
.bt-title {
    margin: 0 0 2px;
    font-size: 1.4rem;
    font-weight: 800;
    letter-spacing: .01em;
}
.bt-sub {
    margin: 0;
    color: #78716C;
    font-size: .85rem;
}

.bt-main {
    flex: 1;
    display: grid;
    grid-template-columns: minmax(0, 1fr) 340px;
    gap: 16px;
    padding: 10px 24px 12px;
    max-width: 1360px;
    width: 100%;
    margin: 0 auto;
    box-sizing: border-box;
    align-items: start;
}

/* ---------- 画面区 ---------- */
.bt-stage {
    background: rgba(255, 255, 255, .55);
    border: 1px solid rgba(255, 255, 255, .8);
    border-radius: 20px;
    padding: 14px;
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    box-shadow: 0 12px 34px rgba(148, 120, 160, .14);
}
.bt-video-wrap {
    position: relative;
    width: 100%;
    aspect-ratio: 4 / 3;
    background: #0d0f14;
    border-radius: 14px;
    overflow: hidden;
}
#btVideo { display: none; }
#btCanvas { width: 100%; height: 100%; display: block; }

/* 画面右上角的「下载 Windows 版」入口（浮在画面上，不占布局） */
.bt-download {
    position: absolute;
    top: 10px;
    right: 10px;
    z-index: 5;
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 6px 12px;
    border-radius: 999px;
    background: rgba(20, 22, 30, .62);
    border: 1px solid rgba(255, 255, 255, .22);
    color: #fff;
    font-size: .8rem;
    font-weight: 600;
    text-decoration: none;
    line-height: 1.2;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    transition: background .18s, border-color .18s, transform .18s;
    white-space: nowrap;
}
.bt-download:hover {
    background: linear-gradient(135deg, #ff6fa5, #a06bff);
    border-color: transparent;
    transform: translateY(-1px);
    color: #fff;
}
.bt-download-icon { font-size: .95rem; line-height: 1; }

/* 窄屏（手机）：只留图标，避免遮挡画面 */
@media (max-width: 640px) {
    .bt-download { padding: 6px 9px; }
    .bt-download-text { display: none; }
}

.bt-overlay {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(13, 15, 20, .82);
    backdrop-filter: blur(4px);
    text-align: center;
    padding: 20px;
    box-sizing: border-box;
}
.bt-overlay.hidden { display: none; }
.bt-overlay-card h2 { margin: 0 0 8px; font-size: 1.1rem; color: #fff; }
.bt-overlay-card p { margin: 0 0 14px; color: #c9cede; font-size: .9rem; max-width: 420px; }
.bt-status { margin-top: 12px !important; color: #ffb3d1 !important; font-size: .82rem !important; min-height: 1em; }

.bt-statusbar {
    display: flex;
    gap: 18px;
    flex-wrap: wrap;
    padding: 10px 4px 2px;
    font-size: .85rem;
    color: #57534E;
}
.bt-statusbar span:first-child { font-weight: 700; color: #DB2777; }
#btHint { margin-left: auto; color: #a8a29e; }

/* ---------- 控制面板 ---------- */
.bt-panel {
    display: flex;
    flex-direction: column;
    gap: 12px;
    max-height: calc(100vh - 150px);
    overflow-y: auto;
    padding-right: 6px;
    scrollbar-width: thin;
    scrollbar-color: rgba(200, 180, 200, .6) transparent;
}
/* 滚动条加粗、留出抓取区域，避免"太细不好拖" */
.bt-panel::-webkit-scrollbar { width: 12px; }
.bt-panel::-webkit-scrollbar-track { background: transparent; }
.bt-panel::-webkit-scrollbar-thumb {
    background: rgba(200, 180, 200, .55);
    border-radius: 6px;
    border: 3px solid transparent;
    background-clip: content-box;
}
.bt-panel::-webkit-scrollbar-thumb:hover { background: rgba(255, 111, 165, .85); background-clip: content-box; }

.bt-group {
    background: rgba(255, 255, 255, .62);
    border: 1px solid rgba(255, 255, 255, .85);
    border-radius: 14px;
    padding: 12px 14px;
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    box-shadow: 0 6px 18px rgba(150, 130, 160, .10);
}
.bt-group > h3 {
    margin: 0 0 10px;
    font-size: .82rem;
    font-weight: 700;
    color: #DB2777;
    letter-spacing: .04em;
}

.bt-row {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
}
.bt-row:last-child { margin-bottom: 0; }
.bt-row > label {
    width: 46px;
    font-size: .82rem;
    color: #57534E;
    flex: 0 0 auto;
}
.bt-row--wide > label { width: 56px; }

input[type="range"] {
    flex: 1;
    -webkit-appearance: none;
    appearance: none;
    height: 5px;
    border-radius: 3px;
    background: linear-gradient(90deg, #a06bff, #ff6fa5);
    outline: none;
}
input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 15px; height: 15px;
    border-radius: 50%;
    background: #fff;
    border: 2px solid #ff6fa5;
    cursor: pointer;
}
input[type="range"]::-moz-range-thumb {
    width: 13px; height: 13px;
    border-radius: 50%;
    background: #fff;
    border: 2px solid #ff6fa5;
    cursor: pointer;
}
.bt-num {
    width: 52px;
    flex: 0 0 auto;
    text-align: right;
    font-size: .8rem;
    font-weight: 700;
    color: #DB2777;
    border: 1px solid #f0d4e0;
    border-radius: 6px;
    padding: 2px 4px;
    background: #fff;
    font-family: inherit;
}

.bt-btn {
    border: 1px solid #f0d4e0;
    background: #fff;
    color: #57534E;
    border-radius: 8px;
    padding: 5px 10px;
    font-size: .8rem;
    cursor: pointer;
    font-family: inherit;
    transition: all .18s;
}
.bt-btn:hover { border-color: #ff6fa5; color: #DB2777; }
.bt-btn--primary {
    background: linear-gradient(90deg, #a06bff, #ff6fa5);
    border: none;
    color: #fff;
    font-weight: 700;
    padding: 9px 22px;
    font-size: .9rem;
}
.bt-btn--primary:hover { color: #fff; filter: brightness(1.06); }
.bt-btn--on {
    background: linear-gradient(90deg, #a06bff, #ff6fa5);
    border-color: transparent;
    color: #fff;
    font-weight: 700;
}

.bt-filters { display: grid; grid-template-columns: repeat(3, 1fr); gap: 6px; margin-bottom: 8px; }
.bt-filters .bt-btn { padding: 6px 2px; }

.bt-stickers { display: grid; grid-template-columns: repeat(6, 1fr); gap: 6px; margin-bottom: 8px; }
.bt-sticker {
    aspect-ratio: 1;
    border: 1px solid #f0d4e0;
    border-radius: 8px;
    background: #fff;
    padding: 3px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}
.bt-sticker canvas { max-width: 100%; max-height: 100%; }
.bt-sticker.on { border-color: #ff6fa5; box-shadow: 0 0 0 2px rgba(255, 111, 165, .25); }

.bt-checks { display: flex; flex-direction: column; gap: 6px; font-size: .82rem; color: #57534E; }
.bt-checks label { display: flex; align-items: center; gap: 6px; cursor: pointer; }

.bt-fold > summary {
    cursor: pointer;
    font-size: .82rem;
    font-weight: 700;
    color: #DB2777;
    list-style: none;
    padding: 2px 0;
}
.bt-fold > summary::-webkit-details-marker { display: none; }
.bt-fold > summary::before { content: '▶ '; font-size: .7em; }
.bt-fold[open] > summary::before { content: '▼ '; }
.bt-sect {
    font-size: .74rem;
    color: #a8a29e;
    font-weight: 700;
    margin: 10px 0 6px;
}
.bt-hint { font-size: .72rem; color: #a8a29e; line-height: 1.5; margin-top: 8px; }

.bt-footer {
    text-align: center;
    padding: 6px 20px 8px;
    font-size: .75rem;
    color: #a8a29e;
}

/*
 * 桌面端：整页不滚动 —— 左侧画面按「可用高度」自适应缩放，
 * 右侧面板独占剩余高度并独立滚动。这样两边都能完整使用、无需上下滚。
 */
@media (min-width: 901px) {
    html, body { height: 100%; }
    .beauty-page { height: 100vh; overflow: hidden; }

    .bt-main {
        flex: 1 1 auto;
        min-height: 0;          /* 关键：允许 grid 行收缩 */
        align-items: stretch;   /* 让面板撑满高度 */
    }
    .bt-stage { display: flex; flex-direction: column; min-height: 0; }

    .bt-video-wrap {
        width: 100%;
        aspect-ratio: 4 / 3;
        /* 由剩余高度反推最大宽度，保证 4:3 画面完整可见 */
        max-width: min(100%, calc((100vh - 240px) * 1.3333));
        margin: 0 auto;
    }
    .bt-panel {
        height: 100%;
        min-height: 0;
        max-height: none;       /* 由父级高度决定，滚动条自然变长 */
    }
    .bt-statusbar { flex: 0 0 auto; }
}

@media (max-width: 900px) {
    .bt-main { grid-template-columns: 1fr; padding: 12px 14px 18px; }
    .bt-panel { max-height: none; }
    #btHint { margin-left: 0; }
}