/* 儿歌童谣跟唱库 /tool/nursery-rhymes —— 儿童友好风格 */

#nurseryApp {
    --nr-pink: #ff7eb6;
    --nr-pink-d: #ff5fa2;
    --nr-blue: #5ec5ff;
    --nr-blue-d: #36a9f0;
    --nr-yellow: #ffd166;
    --nr-green: #6fd08c;
    --nr-purple: #b18cff;
    --nr-orange: #ff9f6b;
    --nr-soft: #fff6fb;
    --nr-line-bg: #ffffff;
}

#nurseryApp .nr-hero {
    text-align: center;
    padding: 14px 0 6px;
}
#nurseryApp .nr-hero h1 {
    font-size: 30px;
    font-weight: 900;
    margin: 0;
    color: var(--c-text, #1f2937);
    letter-spacing: 1px;
}
#nurseryApp .nr-hero .nr-hero-sub {
    margin-top: 6px;
    font-size: 14px;
    color: var(--c-text-sub, #64748b);
}
#nurseryApp .nr-notes {
    font-size: 12px;
    color: var(--c-text-muted, #94a3b8);
    margin-top: 4px;
}

/* 主布局：左歌单 + 右播放器 */
.nr-layout {
    display: grid;
    grid-template-columns: 320px 1fr;
    gap: 20px;
    margin-top: 18px;
    align-items: start;
}
@media (max-width: 900px) {
    .nr-layout { grid-template-columns: 1fr; }
}

/* ---------- 左侧歌单 ---------- */
.nr-panel {
    background: var(--c-bg-card, #fff);
    border: 1px solid var(--c-border, #eceff4);
    border-radius: 20px;
    padding: 16px;
    box-shadow: 0 10px 30px rgba(255, 126, 182, .08);
}
.nr-search {
    width: 100%;
    box-sizing: border-box;
    border: 2px solid #ffd6ea;
    border-radius: 14px;
    padding: 10px 14px;
    font-size: 15px;
    outline: none;
    background: var(--nr-soft, #fff6fb);
    color: var(--c-text, #1f2937);
}
.nr-search:focus { border-color: var(--nr-pink); }

.nr-filters {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: 12px 0;
}
.nr-pill {
    border: 2px solid transparent;
    border-radius: 999px;
    padding: 6px 12px;
    font-size: 13px;
    font-weight: 700;
    cursor: pointer;
    background: #f3f4f8;
    color: var(--c-text-sub, #475569);
    transition: transform .12s, background .15s, color .15s;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}
.nr-pill:hover { transform: translateY(-1px); }
.nr-pill-n {
    font-size: 11px;
    background: rgba(0,0,0,.08);
    border-radius: 999px;
    padding: 0 6px;
    min-width: 18px;
    text-align: center;
}
.nr-pill--all.is-active { background: var(--nr-purple); color: #fff; border-color: var(--nr-purple); }
.nr-pill--0-2.is-active { background: var(--nr-blue); color: #fff; border-color: var(--nr-blue); }
.nr-pill--3-4.is-active { background: var(--nr-pink); color: #fff; border-color: var(--nr-pink); }
.nr-pill--5-6.is-active { background: var(--nr-green); color: #fff; border-color: var(--nr-green); }
.nr-pill--fav.is-active { background: var(--nr-yellow); color: #6b4e00; border-color: var(--nr-yellow); }

.nr-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    max-height: 560px;
    overflow-y: auto;
    padding-right: 4px;
}
.nr-item {
    display: flex;
    align-items: center;
    gap: 10px;
    width: 100%;
    text-align: left;
    border: 2px solid transparent;
    background: var(--nr-soft, #fff6fb);
    border-radius: 16px;
    padding: 10px 12px;
    cursor: pointer;
    transition: transform .12s, box-shadow .15s, border-color .15s, background .15s;
}
.nr-item:hover { transform: translateY(-1px); box-shadow: 0 6px 16px rgba(0,0,0,.08); }
.nr-item.is-current { border-color: var(--nr-pink); background: #fff0f7; }
.nr-item-emoji { font-size: 26px; line-height: 1; width: 32px; text-align: center; }
.nr-item-body { display: flex; flex-direction: column; gap: 3px; min-width: 0; }
.nr-item-title { font-weight: 800; font-size: 15px; color: var(--c-text, #1f2937); }
.nr-item-meta { font-size: 12px; color: var(--c-text-sub, #64748b); display: flex; align-items: center; gap: 6px; }
.nr-tag-ai {
    font-size: 10px; font-weight: 800; color: #fff; background: var(--nr-purple);
    border-radius: 6px; padding: 1px 5px;
}
.nr-empty { text-align: center; color: var(--c-text-muted, #94a3b8); padding: 30px 10px; font-size: 14px; }

/* 年龄段徽标 */
.nr-badge {
    font-size: 11px; font-weight: 800; border-radius: 999px; padding: 2px 8px; white-space: nowrap;
}
.nr-badge--0-2 { background: #e3f4ff; color: #1f7fc4; }
.nr-badge--3-4 { background: #ffe6f3; color: #d63384; }
.nr-badge--5-6 { background: #e4f8ec; color: #1f9d57; }
.nr-badge--all { background: #f0ebff; color: #6d3fd1; }
.nr-badge--cat { background: #fff3d6; color: #a9791a; }

/* ---------- 右侧播放器 ---------- */
.nr-player {
    background: linear-gradient(160deg, #fff7fb 0%, #f1f8ff 100%);
    border: 1px solid var(--c-border, #eceff4);
    border-radius: 24px;
    padding: 22px;
    box-shadow: 0 14px 40px rgba(94, 197, 255, .12);
}
#nurseryApp[data-theme="dark"] .nr-player,
[data-theme="dark"] #nurseryApp .nr-player {
    background: linear-gradient(160deg, #232a3a 0%, #1c2333 100%);
}
.nr-player-head {
    display: flex; align-items: center; gap: 14px; margin-bottom: 14px;
}
.nr-player-emoji {
    font-size: 44px; line-height: 1;
    width: 64px; height: 64px; border-radius: 18px;
    display: flex; align-items: center; justify-content: center;
    background: #fff; box-shadow: 0 6px 16px rgba(0,0,0,.08);
}
.nr-player-title { font-size: 22px; font-weight: 900; color: var(--c-text, #1f2937); margin: 0; }
.nr-player-badges { display: flex; gap: 6px; margin-top: 6px; flex-wrap: wrap; }

.nr-status {
    display: inline-block;
    font-size: 13px; font-weight: 700;
    padding: 6px 14px; border-radius: 999px;
    background: #fff; color: var(--c-text-sub, #64748b);
    margin-bottom: 14px;
}
.nr-status.is-playing { background: #e4f8ec; color: #1f9d57; }
.nr-status.is-follow { background: #fff0d6; color: #b9770b; }
.nr-status.is-paused { background: #eef1f6; color: #475569; }
.nr-status.is-done { background: #e9f1ff; color: #2f6fd0; }
.nr-status.is-warn { background: #fdeaea; color: #c0392b; }

/* 歌词 */
.nr-lyrics {
    background: var(--nr-line-bg, #fff);
    border-radius: 18px;
    padding: 18px 16px;
    min-height: 180px;
    border: 2px dashed #ffd6ea;
    margin-bottom: 14px;
}
.nr-line {
    font-size: 20px;
    line-height: 1.9;
    margin: 0;
    padding: 8px 14px;
    border-radius: 12px;
    cursor: pointer;
    color: var(--c-text, #1f2937);
    transition: background .15s, transform .15s, color .15s;
}
.nr-line:hover { background: #fff0f7; }
.nr-line.is-active {
    background: linear-gradient(90deg, var(--nr-pink), var(--nr-orange));
    color: #fff;
    font-weight: 800;
    transform: scale(1.02);
    animation: nrBounce .5s ease;
}
.nr-lyrics.is-big .nr-line { font-size: 28px; line-height: 2.1; padding: 12px 16px; }
@keyframes nrBounce {
    0% { transform: scale(1); }
    40% { transform: scale(1.06); }
    100% { transform: scale(1.02); }
}

.nr-meta-row {
    font-size: 13px; color: var(--c-text-sub, #64748b); margin-bottom: 14px; line-height: 1.7;
}
.nr-meta-row b { color: var(--c-text, #1f2937); }

/* 控制按钮 */
.nr-controls {
    display: flex; flex-wrap: wrap; gap: 10px; align-items: center;
}
.nr-btn {
    border: none; cursor: pointer;
    border-radius: 16px; padding: 12px 18px;
    font-size: 16px; font-weight: 800;
    display: inline-flex; align-items: center; gap: 6px;
    transition: transform .12s, box-shadow .15s, opacity .15s;
    color: #fff;
}
.nr-btn:hover { transform: translateY(-2px); box-shadow: 0 8px 18px rgba(0,0,0,.14); }
.nr-btn:disabled { opacity: .45; cursor: not-allowed; transform: none; box-shadow: none; }
.nr-btn--play { background: linear-gradient(135deg, var(--nr-green), #3fc46e); }
.nr-btn--follow { background: linear-gradient(135deg, var(--nr-orange), #ff7e5f); }
.nr-btn--follow.is-on { box-shadow: 0 0 0 3px rgba(255,159,107,.4); }
.nr-btn--pause { background: linear-gradient(135deg, var(--nr-blue), var(--nr-blue-d)); }
.nr-btn--stop { background: linear-gradient(135deg, #b6bcc6, #969ca6); }
.nr-btn--nav { background: linear-gradient(135deg, var(--nr-purple), #8a5cf0); }
.nr-btn--fav { background: linear-gradient(135deg, var(--nr-yellow), #ffbf3c); color: #6b4e00; }
.nr-btn--fav.is-on { background: linear-gradient(135deg, var(--nr-pink), var(--nr-pink-d)); color: #fff; }
.nr-btn--ghost {
    background: #fff; color: var(--c-text-sub, #475569);
    border: 2px solid #e7ebf1; box-shadow: none;
}

/* 语速 + 设置行 */
.nr-settings {
    display: flex; flex-wrap: wrap; gap: 10px; align-items: center;
    margin-top: 14px; padding-top: 14px; border-top: 1px dashed #e3e8f0;
}
.nr-rate {
    border: 2px solid #e7ebf1; background: #fff; border-radius: 12px;
    padding: 7px 12px; font-size: 14px; font-weight: 700; cursor: pointer; color: var(--c-text-sub, #475569);
    transition: all .15s;
}
.nr-rate.is-on { border-color: var(--nr-blue); background: #eaf6ff; color: var(--nr-blue-d); }
.nr-set-label { font-size: 13px; color: var(--c-text-sub, #64748b); font-weight: 700; }
#nrBig {
    border: 2px solid #e7ebf1; background: #fff; border-radius: 12px;
    padding: 7px 12px; font-size: 14px; font-weight: 700; cursor: pointer; color: var(--c-text-sub, #475569);
}
#nrBig.is-on { border-color: var(--nr-pink); background: #fff0f7; color: var(--nr-pink-d); }

.nr-voice-wrap { display: flex; align-items: center; gap: 8px; }
#nrVoice {
    border: 2px solid #e7ebf1; border-radius: 12px; padding: 7px 10px; font-size: 13px;
    background: #fff; color: var(--c-text, #1f2937); max-width: 220px;
}
#nrVoiceTip { font-size: 12px; color: var(--c-text-muted, #94a3b8); }

/* ---------- AI 区 ---------- */
.nr-ai {
    margin-top: 20px;
    background: var(--c-bg-card, #fff);
    border: 1px solid var(--c-border, #eceff4);
    border-radius: 24px;
    padding: 22px;
    box-shadow: 0 14px 40px rgba(177, 140, 255, .12);
}
.nr-ai h2 { font-size: 20px; margin: 0 0 4px; color: var(--c-text, #1f2937); }
.nr-ai .nr-ai-sub { font-size: 13px; color: var(--c-text-sub, #64748b); margin: 0 0 14px; }
.nr-ai-gen {
    display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 16px;
}
.nr-ai-gen input {
    flex: 1 1 200px; min-width: 160px;
    border: 2px solid #e3d7ff; border-radius: 14px; padding: 10px 14px;
    font-size: 15px; outline: none; background: #faf7ff; color: var(--c-text, #1f2937);
}
.nr-ai-gen input:focus { border-color: var(--nr-purple); }
.nr-btn--ai { background: linear-gradient(135deg, var(--nr-purple), #8a5cf0); }

.nr-ai-row { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 14px; }
.nr-btn--ai-soft { background: linear-gradient(135deg, #ffd6ea, #ffc1de); color: #b8197a; }

.nr-ai-out {
    background: #faf7ff; border: 1px solid #efe6ff; border-radius: 16px;
    padding: 14px 16px; font-size: 15px; line-height: 1.8; color: var(--c-text, #1f2937);
    min-height: 40px; white-space: pre-wrap;
}
#nurseryApp[data-theme="dark"] .nr-ai-out,
[data-theme="dark"] #nurseryApp .nr-ai-out { background: #20283a; border-color: #313a52; }
.nr-ai-fail { color: #c0392b; }

/* 介绍 / FAQ 区（复用工具页风格） */
.nr-info {
    margin-top: 24px;
}
.nr-info h2 { font-size: 18px; color: var(--c-text, #1f2937); margin: 18px 0 8px; }
.nr-info p, .nr-info li { font-size: 14px; color: var(--c-text-sub, #475569); line-height: 1.8; }
.nr-info ul { padding-left: 20px; }

@media (max-width: 560px) {
    #nurseryApp .nr-hero h1 { font-size: 24px; }
    .nr-btn { padding: 11px 14px; font-size: 15px; }
    .nr-line { font-size: 18px; }
}