/* CutFlow — App Layout */
/* ── MAIN APP LAYOUT ── */
#app{display:none;flex-direction:column;height:100vh;}
#app.visible{display:flex;}

/* HEADER */
header{
  height:var(--header-h);
  background:var(--bg2);
  border-bottom:1px solid var(--border);
  display:flex;align-items:center;
  padding:0 16px;gap:12px;
  flex-shrink:0;
  z-index:50;
}
.header-logo{font-size:16px;font-weight:800;letter-spacing:-.5px;margin-right:4px;}
.header-logo span{color:var(--accent);}
.header-sep{width:1px;height:20px;background:var(--border);margin:0 4px;}
.header-project{
  font-size:13px;color:var(--text2);cursor:pointer;
  padding:5px 10px;border-radius:5px;transition:all .15s;border:none;background:none;
  font-family:var(--sans);color:var(--text2);
}
.header-project:hover{background:var(--surface);color:var(--text);}
.header-spacer{flex:1;}
.hbtn{
  display:flex;align-items:center;gap:6px;padding:7px 14px;
  background:var(--surface);border:1px solid var(--border);border-radius:7px;
  font-size:12px;font-weight:600;color:var(--text2);cursor:pointer;
  transition:all .15s;font-family:var(--sans);white-space:nowrap;
}
.hbtn:hover{background:var(--surface2);color:var(--text);border-color:var(--border2);}
.hbtn.primary{background:linear-gradient(135deg,var(--accent3),var(--accent));border-color:transparent;color:#fff;}
.hbtn.primary:hover{opacity:.9;}
.user-avatar{
  width:30px;height:30px;border-radius:50%;
  background:linear-gradient(135deg,var(--accent3),var(--pink));
  display:flex;align-items:center;justify-content:center;
  font-size:12px;font-weight:700;cursor:pointer;flex-shrink:0;
}

/* WORKSPACE */
.workspace{display:flex;flex:1;overflow:hidden;}

/* LEFT TOOLS */
.tools-bar{
  width:var(--tools-w);
  background:var(--bg2);
  border-right:1px solid var(--border);
  display:flex;flex-direction:column;align-items:center;
  padding:10px 0;gap:4px;
  flex-shrink:0;
}
.tool-btn{
  width:40px;height:40px;border-radius:8px;
  display:flex;align-items:center;justify-content:center;
  font-size:18px;cursor:pointer;transition:all .15s;
  background:none;border:none;position:relative;
  color:var(--text2);
}
.tool-btn:hover{background:var(--surface);color:var(--text);}
.tool-btn.active{background:var(--accent);color:#fff;}
.tool-sep{width:28px;height:1px;background:var(--border);margin:4px 0;}
.tool-tip{
  position:absolute;left:52px;top:50%;transform:translateY(-50%);
  background:var(--surface2);border:1px solid var(--border2);
  border-radius:5px;padding:4px 8px;font-size:11px;font-weight:600;
  white-space:nowrap;pointer-events:none;opacity:0;transition:opacity .15s;
  z-index:100;color:var(--text);font-family:var(--sans);
}
.tool-btn:hover .tool-tip{opacity:1;}

/* CENTER — VIDEO + PREVIEW */
.center-area{flex:1;display:flex;flex-direction:column;overflow:hidden;min-width:0;}

/* PREVIEW */
.preview-area{
  flex:1;
  background:var(--bg);
  display:flex;align-items:center;justify-content:center;
  position:relative;
  overflow:hidden;
  min-height:0;
}
.preview-bg{
  position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
  background-size:20px 20px;
}
#preview-container{
  position:relative;
  background:#000;
  box-shadow:0 0 0 1px rgba(255,255,255,0.08), 0 24px 80px rgba(0,0,0,0.8);
  max-width:90%;max-height:85%;
}
#main-video{display:block;max-width:100%;max-height:60vh;object-fit:contain;}
#canvas-overlay{position:absolute;top:0;left:0;pointer-events:none;}
.preview-empty{
  display:flex;flex-direction:column;align-items:center;gap:16px;
  color:var(--text3);
}
.preview-empty-icon{font-size:52px;opacity:.4;}
.preview-empty h3{font-size:20px;font-weight:700;color:var(--text2);}
.preview-empty p{font-size:14px;text-align:center;max-width:300px;line-height:1.6;}
.drop-zone-active{border:2px dashed var(--accent) !important;background:rgba(124,106,247,0.05);}

/* PLAYBAR */
.playbar{
  background:var(--bg2);
  border-top:1px solid var(--border);
  padding:10px 16px;
  display:flex;align-items:center;
  gap:12px;
  flex-shrink:0;
}
.play-btn{
  width:36px;height:36px;border-radius:8px;
  background:var(--accent);border:none;cursor:pointer;
  display:flex;align-items:center;justify-content:center;font-size:14px;
  transition:all .15s;flex-shrink:0;
}
.play-btn:hover{background:var(--accent2);}
.playbar-btns{display:flex;gap:4px;}
.pb-btn{
  width:30px;height:30px;border-radius:6px;background:var(--surface);
  border:1px solid var(--border);cursor:pointer;font-size:12px;
  display:flex;align-items:center;justify-content:center;
  color:var(--text2);transition:all .15s;
}
.pb-btn:hover{background:var(--surface2);color:var(--text);}
.time-display{
  font-family:var(--mono);font-size:12px;color:var(--text2);white-space:nowrap;
  flex-shrink:0;
}
.progress-wrap{
  flex:1;height:6px;background:var(--bg3);border-radius:3px;cursor:pointer;position:relative;
}
.progress-fill{height:100%;background:linear-gradient(90deg,var(--accent3),var(--accent));border-radius:3px;transition:width .1s;}
.progress-handle{
  position:absolute;top:50%;transform:translate(-50%,-50%);
  width:12px;height:12px;border-radius:50%;background:var(--accent);
  transition:left .1s;box-shadow:0 0 0 2px rgba(124,106,247,.3);
}
.vol-wrap{display:flex;align-items:center;gap:6px;flex-shrink:0;}
.vol-icon{font-size:13px;color:var(--text2);cursor:pointer;}
.vol-slider{width:60px;accent-color:var(--accent);cursor:pointer;}
.zoom-display{font-family:var(--mono);font-size:11px;color:var(--text3);flex-shrink:0;}

/* TIMELINE */
.timeline-section{
  height:var(--timeline-h);
  background:var(--bg2);
  border-top:1px solid var(--border);
  display:flex;flex-direction:column;
  flex-shrink:0;
}
.timeline-header{
  height:28px;
  display:flex;align-items:center;
  padding:0 8px;
  background:var(--bg3);
  border-bottom:1px solid var(--border);
  gap:8px;
}
.tl-label{font-size:10px;font-weight:700;color:var(--text3);text-transform:uppercase;letter-spacing:.08em;font-family:var(--mono);}
.tl-spacer{flex:1;}
.tl-btn{
  font-size:11px;padding:3px 8px;background:var(--surface);border:1px solid var(--border);
  border-radius:4px;color:var(--text2);cursor:pointer;font-family:var(--sans);font-weight:600;
  transition:all .15s;
}
.tl-btn:hover{background:var(--surface2);color:var(--text);}
.tl-btn.danger{border-color:rgba(248,113,113,.3);color:var(--red);}
.tl-btn.danger:hover{background:rgba(248,113,113,.1);}

.timeline-body{flex:1;overflow-x:auto;overflow-y:hidden;position:relative;}
.timeline-ruler{
  height:18px;background:var(--bg3);border-bottom:1px solid var(--border);
  display:flex;align-items:center;padding:0 0 0 100px;
  font-family:var(--mono);font-size:9px;color:var(--text3);
  overflow:hidden;position:sticky;top:0;z-index:2;
  white-space:nowrap;
}
.tl-tick{display:inline-flex;align-items:center;width:80px;flex-shrink:0;}
.timeline-tracks{padding:4px 0;min-height:100%;position:relative;}
.track{
  display:flex;align-items:center;height:32px;
  border-bottom:1px solid rgba(255,255,255,.04);
}
.track-label{
  width:100px;flex-shrink:0;
  display:flex;align-items:center;gap:6px;
  padding:0 8px;
  font-size:10px;font-weight:700;color:var(--text3);font-family:var(--mono);
  text-transform:uppercase;letter-spacing:.05em;
  background:var(--bg2);
  border-right:1px solid var(--border);
  height:100%;
}
.track-content{flex:1;position:relative;height:100%;overflow:hidden;}
.clip{
  position:absolute;top:3px;height:calc(100% - 6px);
  border-radius:4px;overflow:hidden;
  cursor:grab;user-select:none;
  display:flex;align-items:center;padding:0 8px;
  font-size:10px;font-weight:700;font-family:var(--mono);
  white-space:nowrap;
  border:1px solid rgba(255,255,255,.12);
  transition:border-color .15s;
}
.clip:hover{border-color:rgba(255,255,255,.3);}
.clip.selected{border-color:var(--accent) !important;box-shadow:0 0 0 1px var(--accent);}
.clip-video{background:linear-gradient(135deg,#1a3a5c,#2563eb50);}
.clip-audio{background:linear-gradient(135deg,#1a3a2a,#16a34a50);}
.clip-text{background:linear-gradient(135deg,#3a1a4a,#7c3aed50);}
.clip-image{background:linear-gradient(135deg,#3a2a1a,#d9770050);}
.tl-playhead{
  position:absolute;top:0;bottom:0;width:1px;
  background:var(--red);pointer-events:none;z-index:10;
}
.tl-playhead::before{
  content:'';position:absolute;top:0;left:-4px;
  border:4px solid transparent;border-top:6px solid var(--red);
}

/* RIGHT PANEL */
.right-panel{
  width:var(--panel-w);background:var(--bg2);
  border-left:1px solid var(--border);
  display:flex;flex-direction:column;
  flex-shrink:0;overflow:hidden;
}
.panel-tabs{display:flex;border-bottom:1px solid var(--border);background:var(--bg3);}
.panel-tab{
  flex:1;padding:8px 4px;text-align:center;font-size:11px;font-weight:700;
  color:var(--text3);cursor:pointer;border-bottom:2px solid transparent;
  transition:all .15s;font-family:var(--sans);text-transform:uppercase;letter-spacing:.05em;
}
.panel-tab.active{color:var(--accent);border-bottom-color:var(--accent);}
.panel-body{flex:1;overflow-y:auto;padding:14px;}
.panel-body::-webkit-scrollbar{width:4px;}
.panel-body::-webkit-scrollbar-track{background:transparent;}
.panel-body::-webkit-scrollbar-thumb{background:var(--border2);border-radius:2px;}