/* ============================================================
   Fun-Audio-Studio — 扁平科技风设计系统
   主色: #8786F2 (135,134,242)
   ============================================================ */

/* 预加载背景色，减少白屏闪烁 */
html { background-color: #ffffff; }
[data-theme="dark"] html { background-color: #0e0e18; }

/* --- CSS Variables --- */
:root, [data-theme="light"] {
  --bg-page: #ffffff;
  --bg-sidebar: #f2f3f7;
  --bg-card: #ffffff;
  --bg-input: #f5f6fa;
  --bg-hover: #eeeef8;
  --border: #e4e5ec;
  --border-focus: #8786F2;
  --text-1: #1a1b2e;
  --text-2: #5a5b72;
  --text-3: #9496a8;
  --primary: #8786F2;
  --primary-hover: #7574e0;
  --primary-bg: rgba(135,134,242,0.08);
  --primary-bg-solid: #eeedf9;
  --success: #34d399;
  --success-bg: rgba(52,211,153,0.1);
  --error: #f87171;
  --error-bg: rgba(248,113,113,0.1);
  --warning: #fbbf24;
  --warning-bg: rgba(251,191,36,0.1);
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.06);
  --radius: 10px;
  --radius-sm: 6px;
  --sidebar-w: 232px;
  --transition: 0.2s ease;
}
[data-theme="dark"] {
  --bg-page: #0e0e18;
  --bg-sidebar: #151520;
  --bg-card: #1a1a28;
  --bg-input: #222232;
  --bg-hover: #26263a;
  --border: #2c2c40;
  --border-focus: #8786F2;
  --text-1: #e4e5f0;
  --text-2: #a0a1b5;
  --text-3: #62637a;
  --primary: #8786F2;
  --primary-hover: #9a99ff;
  --primary-bg: rgba(135,134,242,0.12);
  --primary-bg-solid: #22223a;
  --success: #34d399;
  --success-bg: rgba(52,211,153,0.12);
  --error: #f87171;
  --error-bg: rgba(248,113,113,0.12);
  --warning: #fbbf24;
  --warning-bg: rgba(251,191,36,0.12);
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.2);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.3);
}

/* --- Reset --- */
*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }
html { font-size:15px; -webkit-font-smoothing:antialiased; }
body { font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Helvetica Neue','PingFang SC','Hiragino Sans GB','Microsoft YaHei',sans-serif; background:var(--bg-page); color:var(--text-1); min-height:100vh; }

/* --- Layout --- */
.layout { display:grid; grid-template-columns:var(--sidebar-w) 1fr; min-height:100vh; }

/* --- Sidebar --- */
.sidebar {
  position:fixed; top:0; left:0; bottom:0;
  width:var(--sidebar-w);
  background:var(--bg-sidebar);
  border-right:1px solid var(--border);
  display:flex; flex-direction:column;
  z-index:100;
  transition:transform var(--transition);
}
.sidebar-brand {
  padding:24px 20px 16px;
  display:flex; align-items:center; gap:10px;
}
.brand-icon {
  width:32px; height:32px; border-radius:8px;
  background:linear-gradient(135deg,#6366f1,#a78bfa);
  display:flex; align-items:center; justify-content:center;
  flex-shrink:0;
}
.brand-icon svg { width:18px; height:18px; fill:#fff; }
.brand-name { font-size:14px; font-weight:700; color:var(--text-1); letter-spacing:-0.02em; line-height:1.2; }
.brand-name small { display:block; font-size:10px; font-weight:400; color:var(--text-3); letter-spacing:0.04em; margin-top:1px; }

.sidebar-nav { flex:1; padding:12px 10px; overflow-y:auto; }
.nav-link {
  display:flex; align-items:center; gap:10px;
  padding:10px 14px; border-radius:8px;
  color:var(--text-2); text-decoration:none;
  font-size:13.5px; font-weight:500;
  transition:all var(--transition);
  margin-bottom:2px;
}
.nav-link svg { width:18px; height:18px; flex-shrink:0; opacity:0.6; transition:opacity var(--transition); }
.nav-link:hover { background:var(--bg-hover); color:var(--text-1); }
.nav-link:hover svg { opacity:0.9; }
.nav-link.active { background:var(--primary-bg); color:var(--primary); font-weight:600; }
.nav-link.active svg { opacity:1; stroke:var(--primary); color:var(--primary); }
.nav-spacer { height:6px; }
.nav-section-label {
  font-size:10px; font-weight:600; color:var(--text-3);
  letter-spacing:0.06em;
  padding:10px 14px 4px; margin-top:2px;
}
.nav-section-label:first-child {
  padding-top:4px; margin-top:0;
}
.nav-badge {
  font-size:9px; font-weight:700; padding:1px 5px; border-radius:4px;
  background:var(--primary); color:#fff; margin-left:auto;
  letter-spacing:0.03em; text-transform:uppercase; line-height:1.4;
}
.nav-badge-emoji {
  margin-left:auto; font-size:14px; line-height:1;
}

/* --- 禁用导航项 --- */
.nav-link.nav-link-disabled {
  pointer-events:none; cursor:default;
  opacity:0.4;
}
.nav-link.nav-link-disabled:hover {
  background:none; color:var(--text-2);
}
.nav-badge-soon {
  margin-left:auto; font-size:9px; font-weight:600;
  padding:2px 6px; border-radius:4px;
  background:var(--bg-input); color:var(--text-3);
  letter-spacing:0.02em; white-space:nowrap;
}

/* --- Visitor Stats --- */
.visitor-stats { margin-bottom:6px; }
.stats-btn {
  display:flex; align-items:center; gap:6px; width:100%;
  padding:6px 10px; border-radius:8px;
  border:1px solid var(--border); background:var(--bg-input);
  font-family:inherit; font-size:11.5px; color:var(--text-3);
  line-height:1; cursor:pointer; user-select:none;
  transition:all var(--transition);
}
.stats-btn:hover { border-color:var(--primary); background:var(--primary-bg); }
.stats-btn:active { transform:scale(0.97); }
.stats-emoji { font-size:18px; line-height:1; transition:transform 0.2s ease; }
.stats-btn:hover .stats-emoji { transform:scale(1.15); }

/* visitor pop 动画 */
.stats-btn.stats-pop .stats-emoji { animation:stats-bounce 0.5s ease; }
@keyframes stats-bounce {
  0% { transform:scale(1); }
  20% { transform:scale(1.6) rotate(12deg); }
  45% { transform:scale(0.8) rotate(-8deg); }
  70% { transform:scale(1.25) rotate(4deg); }
  100% { transform:scale(1) rotate(0); }
}
.stats-text { white-space:nowrap; }
.stats-nums { flex:1; text-align:right; display:flex; align-items:center; justify-content:flex-end; gap:4px; white-space:nowrap; }
.stats-nums strong { color:var(--primary); font-weight:700; font-size:13px; font-variant-numeric:tabular-nums; }
.stats-dot { opacity:0.4; font-size:10px; }

/* --- Like Row --- */
.like-row { padding-bottom:10px; border-bottom:1px solid var(--border); margin-bottom:-2px; }
.like-btn {
  display:flex; align-items:center; gap:6px; width:100%;
  padding:6px 10px; border-radius:8px;
  border:1px solid var(--border); background:var(--bg-input);
  cursor:pointer; transition:all var(--transition);
  font-family:inherit; font-size:11.5px; color:var(--text-3);
  line-height:1; user-select:none;
}
.like-btn:hover { border-color:var(--primary); background:var(--primary-bg); }
.like-btn:active { transform:scale(0.97); }
.like-emoji { font-size:18px; line-height:1; transition:transform 0.2s ease; }
.like-btn:hover .like-emoji { transform:scale(1.15); }
.like-text { flex:1; }
.like-count { color:var(--primary); font-weight:700; font-size:13px; font-variant-numeric:tabular-nums; }

/* like pop 动画 */
.like-btn.like-pop .like-emoji { animation:like-bounce 0.5s ease; }
@keyframes like-bounce {
  0% { transform:scale(1); }
  20% { transform:scale(1.6) rotate(-10deg); }
  45% { transform:scale(0.8) rotate(6deg); }
  70% { transform:scale(1.25); }
  100% { transform:scale(1); }
}

/* 礼花粒子飘散 */
.like-particle {
  position:fixed; font-size:14px; pointer-events:none; z-index:9999;
  animation:confetti-burst 0.7s ease-out forwards; opacity:1;
  transform-origin:center center;
}
@keyframes confetti-burst {
  0% { transform:translate(0,0) scale(0.3) rotate(0); opacity:1; }
  30% { opacity:1; transform:translate(calc(var(--dx)*0.5), calc(var(--dy)*0.5)) scale(1.1) rotate(calc(var(--rot)*0.4)); }
  100% { transform:translate(var(--dx), var(--dy)) scale(0.3) rotate(var(--rot)); opacity:0; }
}

.sidebar-footer {
  padding:14px 16px;
  display:flex; flex-direction:column; gap:10px;
}
.sidebar-footer-row { display:flex; align-items:center; gap:8px; }
.theme-btn, .lang-btn {
  display:flex; align-items:center; justify-content:center;
  width:34px; height:34px; border-radius:8px;
  border:1px solid var(--border); background:var(--bg-input);
  cursor:pointer; color:var(--text-2);
  transition:all var(--transition);
}
.theme-btn:hover, .lang-btn:hover { background:var(--bg-hover); color:var(--text-1); border-color:var(--primary); }
.theme-btn svg, .lang-btn svg { width:16px; height:16px; }
.contact-link {
  font-size:11px; color:var(--text-3); text-decoration:none;
  overflow:hidden; text-overflow:ellipsis; white-space:nowrap;
  cursor:pointer;
}
.contact-link:hover { color:var(--text-2); }
.designer-name {
  color:var(--primary); font-weight:600; cursor:pointer;
  text-decoration:underline; text-decoration-style:dotted;
  text-underline-offset:2px;
}
.contact-link:hover .designer-name { text-decoration-style:solid; }

/* --- QR Modal --- */
.qr-modal-overlay {
  display:none; position:fixed; inset:0; z-index:9999;
  background:rgba(0,0,0,0.25);
  backdrop-filter:blur(8px); -webkit-backdrop-filter:blur(8px);
  align-items:center; justify-content:center;
}
.qr-modal-overlay.active { display:flex; }
.qr-modal {
  position:relative;
  background:var(--bg-card); border:1px solid var(--border);
  border-radius:16px; padding:20px;
  box-shadow:0 20px 60px rgba(0,0,0,0.2);
  animation:qr-pop 0.25s ease-out;
}
@keyframes qr-pop {
  from { opacity:0; transform:scale(0.9); }
  to   { opacity:1; transform:scale(1); }
}
.qr-modal img {
  width:240px; height:auto; border-radius:10px; display:block;
}
.qr-modal-close {
  position:absolute; top:8px; right:12px;
  background:none; border:none; font-size:22px;
  color:var(--text-3); cursor:pointer; line-height:1;
  width:28px; height:28px; display:flex; align-items:center; justify-content:center;
  border-radius:50%; transition:all 0.15s;
}
.qr-modal-close:hover {
  background:var(--bg-hover, rgba(0,0,0,0.06)); color:var(--text-1);
}

/* 暂时隐藏反馈和更新日志按钮 — 恢复时删除下面两行 */
.feedback-icon-btn,
.whats-new-btn { display:none !important; }

/* --- What's New Button (global top-right) --- */
.feedback-icon-btn {
  position:fixed; top:16px; right:168px; z-index:100;
  display:inline-flex; align-items:center; justify-content:center;
  width:34px; height:34px; border-radius:50%;
  background:rgba(255,255,255,0.55); border:1px solid rgba(255,255,255,0.45);
  backdrop-filter:blur(12px); -webkit-backdrop-filter:blur(12px);
  box-shadow:0 2px 12px rgba(0,0,0,0.06);
  text-decoration:none; cursor:pointer;
  transition:all 0.25s ease;
  color:var(--text-2);
}
[data-theme="dark"] .feedback-icon-btn {
  background:rgba(30,30,48,0.6); border-color:rgba(255,255,255,0.08);
  box-shadow:0 2px 12px rgba(0,0,0,0.25);
  color:var(--text-2);
}
.feedback-icon-btn:hover {
  transform:translateY(-1px);
  box-shadow:0 4px 18px rgba(135,134,242,0.18);
  border-color:var(--primary);
  color:var(--primary);
}
.whats-new-btn {
  position:fixed; top:16px; right:20px; z-index:100;
  display:inline-flex; align-items:center; gap:6px;
  padding:7px 14px 7px 10px; border-radius:20px;
  background:rgba(255,255,255,0.55); border:1px solid rgba(255,255,255,0.45);
  backdrop-filter:blur(12px); -webkit-backdrop-filter:blur(12px);
  box-shadow:0 2px 12px rgba(0,0,0,0.06);
  text-decoration:none; cursor:pointer;
  transition:all 0.25s ease;
  font-family:inherit;
}
[data-theme="dark"] .whats-new-btn {
  background:rgba(30,30,48,0.6); border-color:rgba(255,255,255,0.08);
  box-shadow:0 2px 12px rgba(0,0,0,0.25);
}
.whats-new-btn:hover {
  transform:translateY(-1px);
  box-shadow:0 4px 18px rgba(135,134,242,0.18);
  border-color:var(--primary);
}
.whats-new-emoji { font-size:15px; line-height:1; }
.whats-new-text {
  font-size:12px; font-weight:600; color:var(--text-2);
  letter-spacing:0.01em;
}
.whats-new-btn:hover .whats-new-text { color:var(--primary); }

/* --- Main Content --- */
.main { margin-left:var(--sidebar-w); padding:28px 36px 60px; width:100%; max-width:960px; margin-left:auto; margin-right:auto; }
.page-header { margin-bottom:28px; }
.page-header h1 { font-size:22px; font-weight:700; color:var(--text-1); margin-bottom:4px; }
.page-header p { font-size:13.5px; color:var(--text-2); line-height:1.5; }

/* --- Card --- */
.card {
  background:var(--bg-card);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:22px 24px;
  margin-bottom:20px;
  box-shadow:var(--shadow-sm);
}
.card-title { font-size:13px; font-weight:600; color:var(--text-2); margin-bottom:16px; text-transform:uppercase; letter-spacing:0.04em; }

/* --- Form Controls --- */
.form-group { margin-bottom:18px; }
.form-group:last-child { margin-bottom:0; }
.form-label { display:flex; align-items:center; gap:6px; font-size:13px; font-weight:600; color:var(--text-2); margin-bottom:6px; }
.form-hint { font-size:11.5px; color:var(--text-3); margin-top:4px; line-height:1.4; }

/* Toggle Switch */
.toggle-switch {
  display:inline-flex; align-items:center; gap:8px; cursor:pointer; user-select:none;
}
.toggle-switch input { display:none; }
.toggle-slider {
  width:36px; height:20px; background:var(--border); border-radius:10px;
  position:relative; transition:background 0.2s; flex-shrink:0;
}
.toggle-slider::after {
  content:''; position:absolute; top:2px; left:2px;
  width:16px; height:16px; border-radius:50%;
  background:#fff; box-shadow:0 1px 3px rgba(0,0,0,0.15);
  transition:transform 0.2s;
}
.toggle-switch input:checked + .toggle-slider { background:var(--primary); }
.toggle-switch input:checked + .toggle-slider::after { transform:translateX(16px); }
.toggle-label { font-size:12px; color:var(--text-2); }

.form-input, .form-select, .form-textarea {
  width:100%; padding:10px 14px;
  background:var(--bg-input); border:1px solid var(--border);
  border-radius:var(--radius-sm); color:var(--text-1);
  font-size:13.5px; font-family:inherit;
  outline:none; transition:border-color var(--transition), box-shadow var(--transition);
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color:var(--primary);
  box-shadow:0 0 0 3px var(--primary-bg);
}
.form-input::placeholder, .form-textarea::placeholder { color:var(--text-3); }
.form-textarea { min-height:120px; resize:vertical; line-height:1.6; }
.form-textarea.large { min-height:180px; }
.form-select { cursor:pointer; appearance:none; background-image:url("data:image/svg+xml,%3Csvg width='10' height='6' viewBox='0 0 10 6' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%239496a8' stroke-width='1.5' stroke-linecap='round'/%3E%3C/svg%3E"); background-repeat:no-repeat; background-position:right 12px center; padding-right:32px; }

/* --- Radio Group (Model Select) --- */
.radio-group { display:flex; gap:8px; flex-wrap:wrap; }
.radio-pill {
  display:flex; align-items:center; gap:6px;
  padding:8px 16px; border-radius:20px;
  border:1.5px solid var(--border);
  background:transparent; cursor:pointer;
  font-size:13px; font-weight:500; color:var(--text-2);
  transition:all var(--transition);
}
.radio-pill:hover { border-color:var(--primary); color:var(--text-1); }
.radio-pill.active { border-color:var(--primary); background:var(--primary-bg); color:var(--primary); font-weight:600; }
.radio-pill input { display:none; }
.radio-dot {
  width:14px; height:14px; border-radius:50%;
  border:2px solid var(--border); position:relative; flex-shrink:0;
  transition:all var(--transition);
}
.radio-pill.active .radio-dot { border-color:var(--primary); }
.radio-pill.active .radio-dot::after {
  content:''; position:absolute; top:2px; left:2px;
  width:6px; height:6px; border-radius:50%; background:var(--primary);
}

/* --- Slider --- */
.slider-wrap { display:flex; align-items:center; gap:12px; }
.slider-track { flex:1; }
.form-range {
  -webkit-appearance:none; appearance:none;
  width:100%; height:4px; border-radius:2px;
  background:var(--border); outline:none; cursor:pointer;
}
.form-range::-webkit-slider-thumb {
  -webkit-appearance:none; width:16px; height:16px;
  border-radius:50%; background:var(--primary);
  border:2px solid #fff; box-shadow:0 1px 4px rgba(0,0,0,0.15);
  cursor:pointer; transition:transform var(--transition);
}
.form-range::-webkit-slider-thumb:hover { transform:scale(1.15); }
.slider-value {
  min-width:42px; text-align:center;
  font-size:13px; font-weight:600; color:var(--primary);
  background:var(--primary-bg); padding:4px 8px; border-radius:var(--radius-sm);
}

/* --- Form Row --- */
.form-row { display:grid; grid-template-columns:1fr 1fr 1fr; gap:16px; }
.form-row-2 { display:grid; grid-template-columns:1fr 1fr; gap:16px; }

/* --- Voice Selector --- */
.voice-selector-wrap { position:relative; }
.voice-selector {
  padding:10px 14px; border:1px solid var(--border);
  border-radius:var(--radius-sm); background:var(--bg-input);
  cursor:pointer; display:flex; align-items:center; justify-content:space-between;
  transition:all var(--transition); min-height:42px;
}
.voice-selector:hover { border-color:var(--primary); }
.voice-selector .placeholder { color:var(--text-3); font-size:13.5px; }
.voice-selector .selected-voice { font-size:13.5px; color:var(--text-1); font-weight:500; }
.voice-selector .arrow { color:var(--text-3); transition:transform var(--transition); }
.voice-selector.open .arrow { transform:rotate(180deg); }

.voice-dropdown {
  display:none; position:absolute; left:0; right:0; top:calc(100% + 4px);
  background:var(--bg-card); border:1px solid var(--border);
  border-radius:var(--radius); box-shadow:var(--shadow-md);
  max-height:320px; overflow-y:auto; z-index:50;
  padding:6px;
}
.voice-dropdown.open { display:block; }
.voice-dropdown-empty {
  padding:24px 16px; text-align:center; color:var(--text-3); font-size:13px; line-height:1.6;
}
.voice-dropdown-empty a { color:var(--primary); text-decoration:none; font-weight:500; }
.voice-dropdown-empty a:hover { text-decoration:underline; }

/* 搜索框 */
.voice-search-wrap {
  padding:2px 2px 6px; position:sticky; top:0; background:var(--bg-card); z-index:1;
}
.voice-search-input {
  width:100%; padding:8px 10px; border:1px solid var(--border);
  border-radius:var(--radius-sm); background:var(--bg-input);
  font-size:12.5px; font-family:inherit; color:var(--text-1);
  outline:none; box-sizing:border-box; transition:border-color var(--transition);
}
.voice-search-input::placeholder { color:var(--text-3); }
.voice-search-input:focus { border-color:var(--primary); }

.voice-item {
  padding:8px 10px; border-radius:var(--radius-sm);
  cursor:pointer; transition:background var(--transition);
  display:flex; align-items:center; justify-content:space-between; gap:8px;
}
.voice-item:hover { background:var(--bg-hover); }
.voice-item.active { background:var(--primary-bg); }
.voice-item-main { flex:1; min-width:0; }
.voice-item-id { font-size:13px; font-weight:500; color:var(--text-1); overflow:hidden; text-overflow:ellipsis; white-space:nowrap; }
.voice-item-meta { font-size:11px; color:var(--text-3); margin-top:2px; }
.voice-item-tags { display:flex; gap:4px; flex-shrink:0; }
.voice-tag {
  font-size:10px; padding:2px 7px; border-radius:10px; font-weight:600; line-height:1.4; white-space:nowrap;
}
.voice-tag-vd { background:rgba(52,211,153,0.12); color:#10b981; }
.voice-tag-clone { background:rgba(135,134,242,0.12); color:var(--primary); }
.voice-tag-model { background:var(--bg-hover); color:var(--text-3); font-weight:500; }
.voice-item-model {
  font-size:10px; padding:2px 8px; border-radius:10px;
  background:var(--primary-bg); color:var(--primary); font-weight:500; flex-shrink:0; margin-left:8px;
}
.voice-model-warn {
  font-size:11px; color:var(--warning); margin-top:6px;
  display:flex; align-items:center; gap:4px;
}

/* --- Buttons --- */
.btn {
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  padding:10px 22px; border-radius:var(--radius-sm);
  font-size:13.5px; font-weight:600; font-family:inherit;
  cursor:pointer; border:none;
  transition:all var(--transition);
}
.btn:disabled { opacity:0.5; cursor:not-allowed; }
.btn-primary { background:var(--primary); color:#fff; }
.btn-primary:hover:not(:disabled) { background:var(--primary-hover); box-shadow:0 4px 14px rgba(135,134,242,0.3); }
.btn-secondary { background:var(--bg-input); color:var(--text-2); border:1px solid var(--border); }
.btn-secondary:hover:not(:disabled) { background:var(--bg-hover); color:var(--text-1); border-color:var(--primary); }
.btn-ghost { background:transparent; color:var(--primary); padding:6px 12px; }
.btn-ghost:hover { background:var(--primary-bg); }
.btn-sm { padding:6px 14px; font-size:12.5px; }
.btn-block { width:100%; }
.btn svg { width:16px; height:16px; flex-shrink:0; }

.btn-group { display:flex; gap:10px; flex-wrap:wrap; margin-top:20px; }

/* --- Textarea with counter --- */
.textarea-wrap { position:relative; }
.char-counter {
  position:absolute; right:12px; bottom:10px;
  font-size:11px; color:var(--text-3);
  font-variant-numeric:tabular-nums;
}
.char-counter.over { color:var(--error); }

/* --- Audio Player --- */
.audio-player {
  margin-top:16px; padding:14px 16px;
  background:var(--bg-input); border-radius:var(--radius-sm);
  display:none; align-items:center; gap:12px;
}
.audio-player.visible { display:flex; }
.audio-player audio { flex:1; height:36px; outline:none; }
.download-btn {
  display:flex; align-items:center; gap:4px;
  padding:6px 12px; border-radius:var(--radius-sm);
  background:var(--primary); color:#fff;
  font-size:12px; font-weight:500; cursor:pointer; border:none;
  transition:all var(--transition);
}
.download-btn:hover { background:var(--primary-hover); }

/* --- Log Section --- */
.log-section {
  margin-top:16px; border-radius:var(--radius-sm);
  border:1px solid var(--border); overflow:hidden;
}
.log-header {
  padding:8px 14px; background:var(--bg-input);
  display:flex; align-items:center; justify-content:space-between;
  cursor:pointer; font-size:12px; color:var(--text-3); font-weight:500;
}
.log-header svg { width:14px; height:14px; transition:transform var(--transition); }
.log-header.open svg { transform:rotate(180deg); }
.log-body {
  display:none; padding:10px 14px;
  font-family:'SF Mono','Menlo','Consolas','Liberation Mono',monospace;
  font-size:11.5px; line-height:1.8; color:var(--text-2);
  max-height:200px; overflow-y:auto;
  background:var(--bg-card);
}
.log-body.open { display:block; }
.log-line { white-space:pre-wrap; word-break:break-all; }
.log-line.error { color:var(--error); }
.log-line.success { color:var(--success); }

/* --- Result Banner --- */
.result-banner {
  display:none; padding:16px 20px;
  border-radius:var(--radius);
  margin-top:20px;
  border:1px solid transparent;
}
.result-banner.visible { display:block; }
.result-banner.success { background:var(--success-bg); border-color:rgba(52,211,153,0.2); }
.result-banner.error { background:var(--error-bg); border-color:rgba(248,113,113,0.2); }
.result-title { font-size:14px; font-weight:600; margin-bottom:8px; }
.result-banner.success .result-title { color:var(--success); }
.result-banner.error .result-title { color:var(--error); }
.result-detail { font-size:12.5px; color:var(--text-2); line-height:1.6; }
.result-detail code { background:var(--bg-input); padding:1px 6px; border-radius:3px; font-family:monospace; font-size:12px; }

/* --- Audio Source Tabs --- */
.audio-tabs { display:flex; gap:0; border-bottom:1px solid var(--border); margin-bottom:16px; }
.audio-tab {
  padding:8px 18px; font-size:13px; font-weight:500;
  color:var(--text-3); cursor:pointer; border:none; background:none;
  border-bottom:2px solid transparent; transition:all var(--transition);
}
.audio-tab:hover { color:var(--text-1); }
.audio-tab.active { color:var(--primary); border-bottom-color:var(--primary); }
.audio-panel { display:none; }
.audio-panel.active { display:block; }

/* --- Recorder --- */
.recorder { display:flex; align-items:center; gap:12px; flex-wrap:wrap; }
.rec-btn {
  width:40px; height:40px; border-radius:50%;
  display:flex; align-items:center; justify-content:center;
  cursor:pointer; border:none; transition:all var(--transition);
}
.rec-start { background:var(--error-bg); color:var(--error); }
.rec-start:hover { background:var(--error); color:#fff; }
.rec-start.recording { background:var(--error); color:#fff; animation:pulse-rec 1.2s infinite; }
.rec-stop { background:var(--bg-input); color:var(--text-2); border:1px solid var(--border); }
.rec-stop:hover { color:var(--text-1); }
.rec-timer { font-size:13px; font-weight:600; color:var(--text-1); font-variant-numeric:tabular-nums; min-width:40px; }
@keyframes pulse-rec { 0%,100%{box-shadow:0 0 0 0 rgba(248,113,113,0.4)} 50%{box-shadow:0 0 0 8px rgba(248,113,113,0)} }

/* --- Spinner --- */
.spinner { width:16px; height:16px; border:2px solid var(--border); border-top-color:var(--primary); border-radius:50%; animation:spin 0.6s linear infinite; }
@keyframes spin { to{transform:rotate(360deg)} }
.btn .spinner { border-top-color:#fff; border-color:rgba(255,255,255,0.3); }

/* --- Toast --- */
.toast-container { position:fixed; top:20px; left:50%; transform:translateX(-50%); z-index:9999; display:flex; flex-direction:column; align-items:center; gap:8px; pointer-events:none; }
.toast {
  padding:12px 24px; border-radius:var(--radius-sm);
  font-size:13px; font-weight:500; color:#fff;
  box-shadow:0 4px 20px rgba(0,0,0,0.15);
  opacity:0; transform:translateY(-12px); transition:all 0.3s ease;
  max-width:420px; pointer-events:auto; text-align:center;
}
.toast.show { opacity:1; transform:translateY(0); }
.toast.info { background:var(--primary); }
.toast.success { background:#059669; }
.toast.error { background:#dc2626; }
.toast.warning { background:#d97706; }

/* --- Settings Key Status --- */
.status-badge {
  display:inline-flex; align-items:center; gap:6px;
  padding:4px 12px; border-radius:12px; font-size:12px; font-weight:500;
}
.status-badge.ok { background:var(--success-bg); color:var(--success); }
.status-badge.warn { background:var(--warning-bg); color:#b45309; }
.status-dot { width:6px; height:6px; border-radius:50%; }
.status-badge.ok .status-dot { background:var(--success); }
.status-badge.warn .status-dot { background:var(--warning); }

/* --- Responsive --- */
@media (max-width:768px) {
  .layout { grid-template-columns:1fr; }
  .sidebar { transform:translateX(-100%); }
  .sidebar.open { transform:translateX(0); }
  .main { margin-left:0; margin-right:0; padding:68px 16px 40px; max-width:none; }
  .mobile-header { display:flex !important; }
  .form-row { grid-template-columns:1fr; }
  .form-row-2 { grid-template-columns:1fr; }
}

.mobile-header {
  display:none; position:fixed; top:0; left:0; right:0;
  height:52px; background:var(--bg-sidebar);
  border-bottom:1px solid var(--border);
  align-items:center; justify-content:space-between;
  padding:0 16px; z-index:90;
}
.mobile-header .menu-btn {
  background:none; border:none; cursor:pointer; color:var(--text-1); padding:4px;
  display:flex; align-items:center; justify-content:center;
}
.mobile-header-title {
  font-size:15px; font-weight:700; color:var(--text-1); letter-spacing:-0.02em;
}
.mobile-header .theme-btn {
  width:32px; height:32px; border-radius:8px;
  border:1px solid var(--border); background:var(--bg-input);
  cursor:pointer; color:var(--text-2);
  display:flex; align-items:center; justify-content:center;
}
.mobile-header .theme-btn svg { width:16px; height:16px; }
.mobile-overlay { display:none; position:fixed; inset:0; background:rgba(0,0,0,0.4); z-index:99; }
.mobile-overlay.open { display:block; }

/* --- Powered By Footer --- */
.powered-by {
  text-align:center; padding:32px 0 8px;
  font-size:12px; color:var(--text-3); letter-spacing:0.02em;
}

/* --- API Button in Sidebar --- */
.api-link-btn {
  display:flex; align-items:center; justify-content:center;
  width:34px; height:34px; border-radius:8px;
  border:1px solid var(--border); background:var(--bg-input);
  cursor:pointer; color:var(--text-2); text-decoration:none;
  transition:all var(--transition);
  font-size:10px; font-weight:700; font-family:'SF Mono','Menlo','Consolas','Liberation Mono',monospace;
  letter-spacing:-0.02em; line-height:1;
}
.api-link-btn:hover { background:var(--bg-hover); color:var(--text-1); border-color:var(--primary); }

/* --- Lang Toggle Button in Sidebar --- */
.lang-toggle-btn {
  display:flex; align-items:center; justify-content:center;
  width:34px; height:34px; border-radius:8px;
  border:1px solid var(--border); background:var(--bg-input);
  cursor:pointer; color:var(--text-2); text-decoration:none;
  transition:all var(--transition);
  font-size:10px; font-weight:700; font-family:'SF Mono','Menlo','Consolas','Liberation Mono',monospace;
  letter-spacing:-0.02em; line-height:1;
}
.lang-toggle-btn:hover { background:var(--bg-hover); color:var(--text-1); border-color:var(--primary); }

.settings-icon-btn {
  display:flex; align-items:center; justify-content:center;
  width:34px; height:34px; border-radius:8px;
  border:1px solid var(--border); background:var(--bg-input);
  cursor:pointer; color:var(--text-2); text-decoration:none;
  transition:all var(--transition);
}
.settings-icon-btn svg { width:15px; height:15px; }
.settings-icon-btn:hover { background:var(--bg-hover); color:var(--text-1); border-color:var(--primary); }

/* --- Utility --- */
.mt-8 { margin-top:8px; } .mt-12 { margin-top:12px; } .mt-16 { margin-top:16px; } .mt-20 { margin-top:20px; }
.mb-8 { margin-bottom:8px; } .mb-16 { margin-bottom:16px; }
.text-center { text-align:center; }
.flex-between { display:flex; align-items:center; justify-content:space-between; }
.gap-8 { gap:8px; }
.hidden { display:none !important; }
.relative { position:relative; }

/* ============================================================
   子页面导航栏 — 返回 + 同级切换
   ============================================================ */
.subnav-bar {
  display:flex; align-items:center; gap:0;
  padding:0 20px; height:46px;
  border-bottom:1px solid var(--border);
  background:var(--bg-card);
  flex-shrink:0;
  position:relative; z-index:30;
}
.subnav-back {
  display:flex; align-items:center; gap:4px;
  padding:5px 10px 5px 6px;
  border-radius:8px;
  color:var(--text-3);
  font-size:13px; font-weight:500;
  text-decoration:none;
  transition:all 0.15s;
  white-space:nowrap;
}
.subnav-back:hover { background:var(--bg-hover); color:var(--text-1); }
.subnav-back svg { flex-shrink:0; }
.subnav-divider {
  width:1px; height:18px;
  background:var(--border);
  margin:0 6px;
  flex-shrink:0;
}
.subnav-switcher {
  position:relative;
}
.subnav-current {
  display:flex; align-items:center; gap:4px;
  padding:5px 10px;
  border:none; background:none;
  font-size:14px; font-weight:700;
  color:var(--text-1);
  cursor:pointer;
  border-radius:8px;
  transition:all 0.15s;
  font-family:inherit;
}
.subnav-current:hover { background:var(--bg-hover); }
.subnav-current svg {
  transition:transform 0.2s;
  color:var(--text-3);
}
.subnav-switcher.open .subnav-current svg {
  transform:rotate(180deg);
}
.subnav-dropdown {
  display:none;
  position:absolute;
  top:calc(100% + 4px); left:0;
  min-width:160px;
  background:var(--bg-card);
  border:1px solid var(--border);
  border-radius:10px;
  box-shadow:0 8px 24px rgba(0,0,0,0.08);
  padding:4px;
  z-index:50;
}
.subnav-switcher.open .subnav-dropdown { display:block; }
.subnav-dropdown-item {
  display:block;
  padding:8px 14px;
  font-size:13px; color:var(--text-2);
  text-decoration:none;
  border-radius:7px;
  transition:all 0.12s;
  white-space:nowrap;
}
.subnav-dropdown-item:hover {
  background:var(--primary-bg);
  color:var(--primary);
}