/* voice-forge 共享样式：玻璃拟态 + 三栏骨架 */
*{margin:0;padding:0;box-sizing:border-box}
:root{
  --bg-main:#0f172a;
  --card-bg:rgba(22,27,34,0.6);
  --card-border:rgba(255,255,255,0.06);
  --text-primary:#e6edf3;
  --text-secondary:rgba(255,255,255,0.5);
  --text-dim:rgba(255,255,255,0.3);
  --accent-blue:#60a5fa;
  --accent-purple:#a78bfa;
  --accent-pink:#f472b6;
  --danger:#f85149;
  --success:#4ade80;
  --btn-gradient:linear-gradient(135deg,#60a5fa,#a78bfa);
  --radius:10px;
  --transition:all .2s ease;
}
html,body{height:100%}
body{
  font-family:-apple-system,'PingFang SC','Microsoft YaHei',sans-serif;
  min-height:100vh;position:relative;overflow-x:hidden;
  background:radial-gradient(600px 600px at calc(100% - 100px) -60px,rgba(37,99,235,0.35),transparent 60%),
             radial-gradient(500px 500px at 40px calc(100% - 40px),rgba(14,165,233,0.25),transparent 60%),
             radial-gradient(1200px 600px at 80% -10%,#1e3a8a 0%,#0f172a 55%);
  color:var(--text-primary);
}
body::before{
  content:'';position:fixed;inset:0;pointer-events:none;z-index:0;
  background-image:linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);
  background-size:46px 46px;
  mask-image:radial-gradient(700px 500px at 70% 30%,#000,transparent);
  -webkit-mask-image:radial-gradient(700px 500px at 70% 30%,#000,transparent);
}

/* Header */
.header{
  background:rgba(22,27,34,0.8);backdrop-filter:blur(12px);
  padding:10px 16px;display:flex;align-items:center;gap:10px;
  border-bottom:1px solid rgba(255,255,255,0.06);
  position:sticky;top:0;z-index:10;justify-content:center;
}
.header h1{font-size:15px;font-weight:600;color:#fff;text-shadow:0 1px 4px rgba(0,0,0,0.5)}
.header .tag{font-size:10px;background:rgba(96,165,250,0.15);color:var(--accent-blue);padding:2px 7px;border-radius:4px}
.header .back-btn{position:absolute;left:16px;font-size:13px;color:var(--text-secondary);text-decoration:none;transition:var(--transition)}
.header .back-btn:hover{color:#fff}

/* Engine Tabs */
.engine-bar{
  position:sticky;top:41px;z-index:9;
  background:rgba(15,23,42,0.85);backdrop-filter:blur(12px);
  border-bottom:1px solid rgba(255,255,255,0.06);
  display:flex;align-items:center;justify-content:center;gap:10px;
  padding:8px 16px;flex-wrap:wrap;
}
.engine-tabs{display:flex;gap:6px;flex-wrap:wrap;justify-content:center}
.engine-tab{
  padding:6px 14px;border-radius:8px;font-size:12px;cursor:pointer;
  border:1px solid rgba(255,255,255,0.08);
  background:rgba(255,255,255,0.04);color:var(--text-secondary);
  transition:var(--transition);white-space:nowrap;
}
.engine-tab:hover{background:rgba(96,165,250,0.1);color:#fff}
.engine-tab.active{
  background:rgba(96,165,250,0.18);border-color:rgba(96,165,250,0.4);
  color:var(--accent-blue);font-weight:600;
}
.engine-tab .dot{display:inline-block;width:6px;height:6px;border-radius:50%;margin-right:5px;background:var(--text-dim);vertical-align:middle}
.engine-tab.active .dot{background:var(--success);box-shadow:0 0 6px rgba(74,222,128,0.6)}
.engine-status{font-size:11px;color:var(--text-dim);flex-basis:100%;text-align:center}

/* iframe */
.engine-frame-wrap{position:relative;z-index:1;height:calc(100vh - 88px);min-height:520px}
#engineFrame{width:100%;height:100%;border:none;display:block;background:transparent}

/* ============ 引擎页三栏骨架 ============ */
.container{
  max-width:1280px;margin:0 auto;padding:16px;
  display:grid;grid-template-columns:1fr;gap:16px;
  position:relative;z-index:1;
}
@media(min-width:900px){
  .container{grid-template-columns:1.3fr 1fr 1fr;align-items:start}
}
.card{
  background:var(--card-bg);backdrop-filter:blur(12px);
  border-radius:var(--radius);padding:16px;
  border:1px solid var(--card-border);
}
.card h3{font-size:13px;font-weight:600;margin-bottom:12px;color:rgba(255,255,255,0.8)}
.section-title{font-size:11px;font-weight:600;color:var(--text-dim);margin:12px 0 6px;text-transform:uppercase;letter-spacing:.5px}

/* 表单控件 */
.text-input{
  width:100%;min-height:120px;padding:12px;
  border-radius:8px;border:1px solid rgba(255,255,255,0.1);
  background:rgba(255,255,255,0.04);color:var(--text-primary);
  font-size:14px;line-height:1.6;resize:vertical;outline:none;
  font-family:inherit;transition:var(--transition);
}
.text-input:focus{border-color:rgba(96,165,250,0.5)}
.text-input::placeholder{color:rgba(255,255,255,0.2)}
.char-count{font-size:11px;color:var(--text-dim);text-align:right;margin-top:4px}

.upload-box{
  position:relative;border:2px dashed rgba(255,255,255,0.12);
  border-radius:8px;padding:16px;text-align:center;cursor:pointer;
  transition:var(--transition);min-height:96px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;
}
.upload-box:hover{border-color:rgba(96,165,250,0.5)}
.upload-box.has-audio{border-style:solid;border-color:rgba(96,165,250,0.3)}
.upload-box input{display:none}
.upload-box .icon{font-size:26px;margin-bottom:6px;opacity:.4}
.upload-box .label{font-size:12px;color:var(--text-dim)}
.upload-box .filename{font-size:12px;color:var(--accent-blue);margin-top:4px}

.audio-player-wrap{margin-top:10px;display:none}
.audio-player-wrap.show{display:block}
.audio-player-wrap audio{width:100%;height:36px;border-radius:6px}
.audio-info{font-size:11px;color:var(--text-dim);margin-top:4px;display:flex;justify-content:space-between}

.controls-row{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin:8px 0}
.controls-row label{font-size:11px;color:var(--text-secondary);display:flex;align-items:center;gap:4px;min-width:64px}
.controls-row input[type=range]{
  flex:1;min-width:70px;max-width:110px;height:3px;
  accent-color:var(--accent-blue);
}
.controls-row .val{font-size:11px;color:var(--text-secondary);min-width:26px;text-align:right}
.controls-row select,.controls-row input[type=text]{
  padding:4px 8px;border-radius:5px;flex:1;min-width:0;
  border:1px solid rgba(255,255,255,0.1);
  background:rgba(255,255,255,0.04);color:var(--text-primary);
  font-size:12px;outline:none;
}
.controls-row input[type=text]{min-height:30px}

.emo-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:6px;margin:8px 0}
.emo-btn{
  padding:6px 4px;border-radius:6px;
  border:1px solid rgba(255,255,255,0.06);
  background:rgba(255,255,255,0.04);color:var(--text-secondary);
  font-size:11px;cursor:pointer;transition:var(--transition);text-align:center;
}
.emo-btn:hover{background:rgba(96,165,250,0.1);color:#fff}
.emo-btn.active{background:rgba(96,165,250,0.15);border-color:rgba(96,165,250,0.3);color:var(--accent-blue)}

.btn{
  padding:10px 24px;border-radius:8px;border:none;
  font-size:14px;font-weight:600;cursor:pointer;transition:var(--transition);
}
.btn-primary{background:var(--btn-gradient);color:#fff;width:100%;padding:12px}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 4px 14px rgba(96,165,250,0.3)}
.btn-primary:disabled{opacity:.4;cursor:default;transform:none;box-shadow:none}
.btn-sm{
  padding:6px 14px;font-size:12px;border-radius:6px;
  background:rgba(255,255,255,0.06);color:var(--text-secondary);
  border:1px solid rgba(255,255,255,0.08);cursor:pointer;transition:var(--transition);
}
.btn-sm:hover{background:rgba(255,255,255,0.1);color:#fff}

.loading-wrap{display:none;margin-top:12px}
.loading-wrap.show{display:block}
.loading-bar{width:100%;height:3px;background:rgba(255,255,255,0.08);border-radius:2px;overflow:hidden;position:relative}
.loading-bar .fill{height:100%;width:30%;border-radius:2px;position:absolute;background:var(--accent-blue);animation:loadingSlide 1.2s ease-in-out infinite}
@keyframes loadingSlide{0%{left:-30%}100%{left:100%}}
.loading-text{font-size:12px;color:var(--text-secondary);margin-top:8px;text-align:center}

.result-area{margin-top:16px;display:none}
.result-area.show{display:block}
.result-audio{width:100%;margin-top:8px}
.result-actions{display:flex;gap:8px;margin-top:10px}

.error-msg{color:var(--danger);font-size:12px;margin-top:8px;display:none;word-break:break-all}
.error-msg.show{display:block}

.history-list{display:flex;flex-direction:column;gap:8px;margin-top:8px}
.history-item{
  display:flex;align-items:center;gap:10px;padding:8px 10px;
  border-radius:8px;background:rgba(255,255,255,0.03);
  border:1px solid rgba(255,255,255,0.04);cursor:pointer;transition:var(--transition);
}
.history-item:hover{background:rgba(255,255,255,0.06)}
.history-item .h-text{flex:1;font-size:12px;color:var(--text-secondary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.history-item .h-time{font-size:10px;color:var(--text-dim)}
.history-item .h-play{font-size:16px;color:var(--accent-blue)}

.collapse-toggle{
  cursor:pointer;user-select:none;display:flex;align-items:center;gap:6px;
  font-size:12px;color:var(--text-dim);margin-top:8px;transition:var(--transition);
}
.collapse-toggle:hover{color:var(--text-secondary)}
.collapse-toggle .arrow{transition:transform .2s}
.collapse-toggle.open .arrow{transform:rotate(90deg)}
.collapse-body{max-height:0;overflow:hidden;transition:max-height .3s ease}
.collapse-body.open{max-height:520px}

.notice{
  padding:10px 12px;border-radius:8px;font-size:12px;line-height:1.6;
  background:rgba(250,173,20,0.08);border:1px solid rgba(250,173,20,0.25);
  color:var(--text-secondary);margin-bottom:12px;
}

.footer{text-align:center;margin:24px 0 16px;font-size:11px;color:var(--text-dim);position:relative;z-index:1}
.footer a{color:var(--accent-blue);text-decoration:none}

::-webkit-scrollbar{width:6px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:rgba(255,255,255,0.1);border-radius:3px}

@media(max-width:900px){
  .container{grid-template-columns:1fr}
  .emo-grid{grid-template-columns:repeat(4,1fr)}
}