/* ===================== 吉他谱查询器 Guitar Tab Finder ===================== */
.gt-page { max-width: 920px; margin: 0 auto; padding: 16px clamp(12px, 3vw, 28px) 64px; color: var(--text-primary); }

/* ---------- 顶部 ---------- */
.gt-top { padding: 8px 0 14px; }
.gt-top-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.gt-title { font-size: 24px; font-weight: 800; margin: 0; display: flex; align-items: center; gap: 10px; }
.gt-logo { font-size: 26px; }
.gt-actions { display: flex; gap: 8px; }

.gt-search { position: relative; margin-top: 14px; }
.gt-search-input {
    width: 100%; box-sizing: border-box;
    padding: 11px 40px 11px 16px; font-size: 15px;
    background: var(--bg-secondary); color: var(--text-primary);
    border: 1px solid var(--border-color); border-radius: 999px; outline: none;
}
.gt-search-input:focus { border-color: var(--accent); }
.gt-search-clear {
    position: absolute; right: 10px; top: 50%; transform: translateY(-50%);
    border: 0; background: transparent; color: var(--text-secondary);
    cursor: pointer; font-size: 14px; padding: 4px; display: none;
}
.gt-search-clear.show { display: block; }

.gt-filters { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; align-items: center; }
.gt-select {
    background: var(--bg-secondary); color: var(--text-primary);
    border: 1px solid var(--border-color); border-radius: 10px;
    padding: 8px 10px; font-size: 13px; cursor: pointer; outline: none;
}
.gt-select-sm { padding: 4px 8px; font-size: 12px; border-radius: 8px; }
.gt-check { font-size: 13px; color: var(--text-secondary); display: inline-flex; align-items: center; gap: 5px; cursor: pointer; }

/* ---------- 按钮 ---------- */
.gt-btn {
    border: 1px solid transparent; border-radius: 999px; padding: 9px 16px;
    font-size: 14px; font-weight: 700; cursor: pointer; white-space: nowrap;
    background: var(--bg-secondary); color: var(--text-primary); transition: .15s;
}
.gt-btn:hover { background: var(--bg-hover); }
.gt-btn-primary { background: var(--accent); color: #fff; }
.gt-btn-primary:hover { background: var(--accent-hover); }
.gt-btn-ghost { background: transparent; border-color: var(--border-color); }
.gt-btn:disabled { opacity: .45; cursor: not-allowed; }
.gt-icon-btn {
    border: 0; background: transparent; color: var(--text-secondary);
    font-size: 18px; cursor: pointer; padding: 6px 8px; border-radius: 50%;
}
.gt-icon-btn:hover { background: var(--bg-hover); color: var(--text-primary); }

/* ---------- 卡片列表 ---------- */
.gt-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 14px; margin-top: 16px; }
.gt-card {
    background: var(--bg-secondary); border: 1px solid var(--border-color); border-radius: 14px;
    padding: 14px; cursor: pointer; transition: .15s; position: relative; overflow: hidden;
}
.gt-card:hover { border-color: var(--accent); transform: translateY(-2px); }
.gt-card-title { font-size: 16px; font-weight: 700; margin: 0 0 4px; padding-right: 24px; }
.gt-card-artist { font-size: 13px; color: var(--text-secondary); margin-bottom: 10px; }
.gt-card-meta { display: flex; flex-wrap: wrap; gap: 6px; }
.gt-tag {
    font-size: 11px; padding: 3px 8px; border-radius: 999px;
    background: var(--bg-hover); color: var(--text-secondary); border: 1px solid var(--border-color);
}
.gt-tag.key { background: color-mix(in srgb, var(--accent) 18%, transparent); color: var(--accent); border-color: transparent; }
.gt-tag.diff { color: #ffb020; }
.gt-card-fav { position: absolute; top: 10px; right: 10px; font-size: 16px; color: var(--text-secondary); }
.gt-card-fav.on { color: #ffb020; }

.gt-empty { text-align: center; color: var(--text-secondary); padding: 48px 16px; font-size: 14px; }

/* ---------- 查看器 ---------- */
.gt-viewer {
    margin-top: 18px; background: var(--bg-secondary); border: 1px solid var(--border-color);
    border-radius: 16px; padding: 16px;
}
.gt-viewer-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 12px; }
.gt-viewer-title h2 { margin: 0 0 6px; font-size: 20px; }
.gt-viewer-meta { font-size: 12px; color: var(--text-secondary); display: flex; flex-wrap: wrap; gap: 8px; }
.gt-viewer-tools { display: flex; gap: 4px; flex-shrink: 0; }
#gtFavBtn.on { color: #ffb020; }

.gt-controls {
    display: flex; flex-wrap: wrap; gap: 12px; justify-content: space-between;
    margin: 14px 0; padding: 12px; background: var(--bg-primary);
    border: 1px solid var(--border-color); border-radius: 12px;
}
.gt-transpose, .gt-play { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.gt-ctl-label { font-size: 13px; color: var(--text-secondary); }
.gt-step {
    width: 30px; height: 30px; border-radius: 8px; border: 1px solid var(--border-color);
    background: var(--bg-secondary); color: var(--text-primary); font-size: 18px; cursor: pointer; line-height: 1;
}
.gt-step:hover { background: var(--bg-hover); }
.gt-semitone {
    min-width: 28px; text-align: center; font-weight: 800; font-size: 16px;
}
.gt-key { font-size: 13px; color: var(--accent); font-weight: 700; }
.gt-capo-wrap { font-size: 12px; color: var(--text-secondary); display: inline-flex; align-items: center; gap: 4px; }

/* 谱面 */
.gt-sheet { font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace; font-size: 14px; line-height: 1.7; white-space: pre-wrap; word-break: break-word; max-height: 60vh; overflow: auto; padding: 14px; background: var(--bg-primary); border: 1px solid var(--border-color); border-radius: 12px; color: var(--text-primary); }
.gt-sheet .gt-chord { color: var(--accent); font-weight: 700; }
.gt-sheet .gt-section { color: #ffb020; font-weight: 700; }
.gt-sheet img { max-width: 100%; border-radius: 8px; cursor: zoom-in; }
.gt-sheet .gt-gp-info { color: var(--text-secondary); }
.gt-sheet .gt-gp-info b { color: var(--text-primary); }

/* ---------- 弹窗 ---------- */
.gt-modal { position: fixed; inset: 0; z-index: 9999; display: flex; align-items: flex-end; justify-content: center; }
.gt-modal-mask { position: absolute; inset: 0; background: rgba(0,0,0,.5); }
.gt-modal-card {
    position: relative; width: 100%; max-width: 560px; max-height: 92dvh;
    background: var(--bg-primary); border: 1px solid var(--border-color);
    border-radius: 16px 16px 0 0; display: flex; flex-direction: column;
    animation: gt-sheet .22s ease;
}
@keyframes gt-sheet { from { transform: translateY(40%); opacity: 0; } to { transform: translateY(0); opacity: 1; } }
.gt-modal-head { display: flex; justify-content: space-between; align-items: center; padding: 16px; border-bottom: 1px solid var(--border-color); }
.gt-modal-head h3 { margin: 0; font-size: 18px; }
.gt-modal-body { padding: 16px; overflow-y: auto; }
.gt-modal-foot { display: flex; justify-content: flex-end; gap: 10px; padding: 14px 16px; border-top: 1px solid var(--border-color); }

.gt-field { display: block; font-size: 13px; color: var(--text-secondary); margin-bottom: 14px; }
.gt-field-row { display: flex; gap: 12px; flex-wrap: wrap; }
.gt-field-row .gt-field { flex: 1; min-width: 120px; }
.gt-input {
    width: 100%; box-sizing: border-box; margin-top: 6px; padding: 10px 12px;
    background: var(--bg-secondary); color: var(--text-primary);
    border: 1px solid var(--border-color); border-radius: 10px; font-size: 14px; outline: none;
    font-family: inherit;
}
.gt-input:focus { border-color: var(--accent); }
.gt-textarea { min-height: 140px; resize: vertical; font-family: "SFMono-Regular", Consolas, monospace; line-height: 1.6; }
.gt-hint { font-size: 12px; color: var(--text-secondary); }

/* ---------- hidden 修复：author 规则的 display 必须让位于 [hidden] ---------- */
.gt-modal[hidden], .gt-lightbox[hidden], .gt-viewer[hidden], .gt-empty[hidden] { display: none !important; }

/* ---------- 图片灯箱 ---------- */
.gt-lightbox { position: fixed; inset: 0; z-index: 10000; display: flex; align-items: center; justify-content: center; background: rgba(0,0,0,.85); }
.gt-lightbox-mask { position: absolute; inset: 0; }
.gt-lightbox img { max-width: 94vw; max-height: 90vh; border-radius: 8px; position: relative; }
.gt-lightbox-close { position: absolute; top: 16px; right: 16px; color: #fff; font-size: 22px; }

/* ===================== 桌面端 ===================== */
@media (min-width: 768px) {
    .gt-modal { align-items: center; }
    .gt-modal-card { border-radius: 16px; }
    .gt-list { grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); }
}

/* ===================== 手机端 ===================== */
@media (max-width: 767px) {
    .gt-page { padding: 12px 12px 48px; }
    .gt-title { font-size: 20px; }
    .gt-top-row { flex-wrap: wrap; }
    .gt-controls { flex-direction: column; }
    .gt-transpose, .gt-play { width: 100%; }
    .gt-list { grid-template-columns: 1fr; }
    .gt-sheet { font-size: 13px; }
}
@media (max-width: 700px) {
    .gt-filters { gap: 6px; }
    .gt-select { font-size: 12px; padding: 7px 8px; }
}