*{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg:#0d1117; --panel:#161c26; --panel2:#1d2635; --line:#2a3547;
  --text:#eef2f7; --dim:#9fb0c3; --amber:#f2a93b; --green:#37b24d; --red:#e05252;
}
html,body{height:100%}
body{background:var(--bg);color:var(--text);font-family:'Poppins',system-ui,sans-serif;display:flex;flex-direction:column;overflow-x:hidden}
button{font-family:inherit;cursor:pointer}
.btn{border:0;border-radius:10px;padding:9px 16px;font-weight:600;font-size:14px;color:#10131a;background:#dfe6ee;transition:.15s}
.btn:hover{transform:translateY(-1px)}
.btn.amber{background:var(--amber)}
.btn.green{background:var(--green);color:#fff}
.btn.ghost{background:transparent;color:var(--text);border:1px solid var(--line)}
.btn.danger{background:transparent;color:#ff9a9a;border:1px solid #5a2b2b}
.btn.sm{padding:6px 10px;font-size:12.5px}
.btn.big{padding:13px 22px;font-size:16px;width:100%;margin-top:10px}
.btn.full{width:100%;margin-top:8px}
.btn:disabled{opacity:.45;cursor:wait;transform:none}

.topbar{display:flex;justify-content:space-between;align-items:center;padding:10px 18px;background:var(--panel);border-bottom:1px solid var(--line);gap:12px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:12px}
.brand-logo{height:52px;width:auto;background:#05070a;border-radius:10px;padding:3px}
.brand-name{font-weight:800;font-size:20px;letter-spacing:.4px}
.brand-name span{color:var(--amber)}
.brand-tag{font-size:12px;color:var(--dim)}
.top-actions{display:flex;align-items:center;gap:9px;flex-wrap:wrap}
.save-state{font-size:12.5px;color:var(--green)}

.home-view{flex:1;display:flex;align-items:center;justify-content:center;padding:28px}
.home-card{background:var(--panel);border:1px solid var(--line);border-radius:20px;padding:36px;max-width:520px;width:100%;text-align:center}
.home-logo{height:130px;width:auto;background:#05070a;border-radius:16px;padding:8px}
.home-card h1{margin:14px 0 6px;font-size:30px}
.home-card p{color:var(--dim);font-size:14.5px}
.home-steps{display:flex;gap:10px;margin-top:22px}
.home-steps div{flex:1;background:var(--panel2);border:1px solid var(--line);border-radius:12px;padding:12px 6px}
.home-steps b{display:block;color:var(--amber);font-size:13px}
.home-steps span{font-size:12.5px;color:var(--dim)}

.studio{flex:1;display:flex;gap:0;min-height:0}
.panel{width:348px;min-width:348px;background:var(--panel);border-right:1px solid var(--line);padding:14px;overflow-y:auto;display:flex;flex-direction:column;gap:14px}
.step{background:var(--panel2);border:1px solid var(--line);border-radius:14px;padding:13px}
.step.grow{flex:1;display:flex;flex-direction:column}
.step h2{font-size:15px;margin-bottom:10px;display:flex;align-items:center;gap:8px}
.step-no{background:var(--amber);color:#10131a;width:22px;height:22px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;font-size:13px;font-weight:800}
.fld-label{display:block;font-size:12.5px;color:var(--dim);margin:8px 0 6px}
.hint{font-size:12px;color:var(--dim);line-height:1.5}
.hint.center{text-align:center;margin-top:8px}

.bg-list{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.bg-item{border:2px solid var(--line);border-radius:10px;overflow:hidden;cursor:pointer;background:#000}
.bg-item.active{border-color:var(--amber)}
.bg-item svg{width:100%;height:56px;display:block}
.bg-item span{display:block;font-size:11.5px;padding:4px 6px;background:var(--panel);color:var(--text)}
.char-list{display:flex;flex-wrap:wrap;gap:7px}
.char-add{background:var(--panel);border:1px solid var(--line);color:var(--text);border-radius:999px;padding:6px 12px;font-size:12.5px}
.char-add:hover{border-color:var(--amber)}
.sel-box{margin-top:12px;border-top:1px dashed var(--line);padding-top:10px}
.sel-title{font-size:13px;margin-bottom:8px}
.sel-btns{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:6px}

.line-list{display:flex;flex-direction:column;gap:9px;overflow-y:auto}
.line-card{background:var(--panel);border:1px solid var(--line);border-radius:11px;padding:9px}
.line-card.active{border-color:var(--amber)}
.line-top{display:flex;gap:6px;margin-bottom:6px}
.line-top select{background:var(--panel2);color:var(--text);border:1px solid var(--line);border-radius:8px;padding:5px;font-size:12.5px;flex:1;min-width:0}
.line-card textarea{width:100%;background:var(--panel2);border:1px solid var(--line);border-radius:8px;color:var(--text);padding:7px 9px;font-family:inherit;font-size:13.5px;resize:vertical;min-height:38px}
.line-btns{display:flex;gap:6px;margin-top:6px;align-items:center}
.rec-btn.recording{background:var(--red)!important;color:#fff!important;border-color:var(--red)!important}
.line-dur{font-size:11.5px;color:var(--dim);margin-left:auto}
.voice-dot{font-size:11.5px;color:var(--green)}

.stage-wrap{flex:1;padding:14px;display:flex;flex-direction:column;min-width:0}
.scene-tabs{display:flex;align-items:center;gap:8px;margin-bottom:10px;flex-wrap:wrap}
.tabs{display:flex;gap:6px;flex-wrap:wrap}
.tab{background:var(--panel2);border:1px solid var(--line);color:var(--text);border-radius:999px;padding:6px 14px;font-size:13px}
.tab.active{background:var(--amber);color:#10131a;font-weight:700;border-color:var(--amber)}
.proj-name{margin-left:auto;background:var(--panel2);border:1px solid var(--line);color:var(--text);border-radius:9px;padding:7px 11px;font-family:inherit;font-size:13.5px;min-width:160px}
.stage-box{position:relative;background:#000;border-radius:14px;overflow:hidden;border:1px solid var(--line);aspect-ratio:16/9;width:100%}
#stage{width:100%;height:100%;display:block;touch-action:none}
#stage .char-g{cursor:grab}
#stage .char-g.selected .sel-ring{display:block}
.bubble{position:absolute;background:#fff;color:#14181f;font-size:15px;font-weight:600;padding:8px 13px;border-radius:14px;max-width:46%;transform:translate(-50%,-115%);box-shadow:0 4px 14px rgba(0,0,0,.35);z-index:5}
.bubble:after{content:'';position:absolute;left:50%;bottom:-7px;transform:translateX(-50%);border:8px solid transparent;border-top-color:#fff;border-bottom:0}
.subtitle{position:absolute;left:50%;bottom:4.5%;transform:translateX(-50%);background:rgba(0,0,0,.72);color:#fff;font-size:16.5px;font-weight:600;padding:6px 16px;border-radius:9px;max-width:88%;text-align:center;z-index:5}
.play-overlay{position:absolute;top:10px;right:10px;display:flex;gap:10px;align-items:center;z-index:6;background:rgba(0,0,0,.5);padding:5px 10px;border-radius:10px}
#playTime{font-size:13px;color:#fff}
.export-state{font-size:12.5px;color:var(--amber);margin-top:8px;min-height:16px}

@media (max-width:900px){
  .studio{flex-direction:column}
  .panel{width:100%;min-width:0;order:2;border-right:0;border-top:1px solid var(--line)}
  .stage-wrap{order:1}
  .brand-tag{display:none}
}

.modal{position:fixed;inset:0;background:rgba(4,6,10,.72);display:flex;align-items:center;justify-content:center;z-index:50;padding:18px}
.modal-card{background:var(--panel2);border:1px solid var(--line);border-radius:16px;padding:24px;max-width:400px;width:100%;text-align:center}
.modal-card p{font-size:15px;line-height:1.6;margin-bottom:16px}
.modal-btns{display:flex;gap:9px;justify-content:center;flex-wrap:wrap}

/* ---------- timeline + keyframe panel ---------- */
.tl-panel{margin-top:12px;background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:12px}
.tl-head{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-bottom:9px}
.tl-head b{font-size:14.5px;margin-right:2px}
.tl-zoom{display:flex;align-items:center;gap:6px;font-size:12.5px;color:var(--dim);margin-left:auto}
.tl-zoom input{width:110px;accent-color:var(--amber)}
.tl-time{font-size:12.5px;color:var(--amber);min-width:92px;text-align:right}
.tl-props{display:flex;align-items:center;gap:10px;flex-wrap:wrap;background:var(--panel2);border:1px solid var(--line);border-radius:10px;padding:7px 10px;margin-bottom:9px}
.tl-props-title{font-size:12.5px;color:var(--dim)}
.tl-props label{font-size:12px;color:var(--dim);display:flex;align-items:center;gap:5px}
.tl-props input{width:64px;background:var(--panel);border:1px solid var(--line);color:var(--text);border-radius:7px;padding:4px 6px;font-family:inherit;font-size:12.5px}
.tl-props input:disabled{opacity:.4}
.tl-body{overflow-x:auto;border:1px solid var(--line);border-radius:10px;background:#10151f;padding-bottom:6px}
.tl-inner{position:relative;min-width:100%}
.tl-ruler{display:flex;height:24px;border-bottom:1px solid var(--line);cursor:pointer;position:relative}
.tl-label{width:118px;min-width:118px;font-size:12px;padding:5px 8px;color:var(--text);background:#141a26;position:sticky;left:0;z-index:3;white-space:nowrap;overflow:hidden}
.tl-corner{color:var(--dim);font-size:11.5px}
.tl-ruler-lane{position:relative}
.tl-tick{position:absolute;top:0;font-size:10px;color:var(--dim);border-left:1px solid #2a3547;height:100%;padding:3px 0 0 3px}
.tl-row{display:flex;align-items:stretch;border-bottom:1px solid #1d2635;min-height:44px}
.tl-lane{position:relative;background:repeating-linear-gradient(90deg,transparent 0,transparent 43px,#1a2231 43px,#1a2231 44px)}
.tl-clip{position:absolute;top:7px;height:30px;border-radius:7px;color:#fff;font-size:11px;font-weight:600;padding:5px 7px;white-space:nowrap;overflow:hidden;cursor:grab;border:1px solid rgba(0,0,0,.35);user-select:none;touch-action:none}
.tl-clip.sel{outline:2px solid #fff}
.tl-clip-dur{opacity:.85;font-weight:400;margin-left:5px;font-size:10.5px}
.tl-edge{position:absolute;right:0;top:0;width:9px;height:100%;cursor:ew-resize}
.tl-dia{position:absolute;bottom:3px;width:13px;height:13px;background:var(--amber);transform:translateX(-50%) rotate(45deg);border:2px solid #7a5510;border-radius:3px;cursor:ew-resize;z-index:4;touch-action:none}
.tl-dia.sel{background:#fff;border-color:var(--amber);width:15px;height:15px}
.tl-playhead{position:absolute;top:0;bottom:0;width:2px;background:#ff5252;z-index:5;pointer-events:none}
.tl-playhandle{position:absolute;top:0;transform:translateX(-50%);color:#ff5252;font-size:11px;z-index:6;pointer-events:none}