/* === Merge Demo Visualisation Page — GiTrip colour scheme === */

/* Compact hero bar */
.merge-demo-hero{
  background:radial-gradient(circle at top left,#2f4643,#1b251f);
  color:#fff;
  padding:18px 24px;
  text-align:center;
}
.merge-demo-hero h1{
  font-size:22px;
  margin:0 0 4px;
  color:#fff;
}
.merge-demo-hero .lead{
  font-size:13px;
  margin:0 auto;
  color:rgba(255,255,255,0.6);
  max-width:1020px;
}

/* Main section — full width */
.merge-demo-main{
  background:radial-gradient(ellipse at bottom,#233331,#1b251f);
  padding:20px 20px 60px;
}
.merge-demo-main .card{
  background:rgba(47,70,67,0.6);
  border:1px solid rgba(255,255,255,0.1);
  color:#e8edec;
  border-radius:10px;
  padding:14px;
}

/* Grid: panels + sidebar */
.merge-demo-layout{
  display:grid;
  grid-template-columns:1fr 440px;
  gap:16px;
  align-items:start;
}

/* Plan panels wrap */
.merge-demo-panels-wrap{
  position:relative;
  border-radius:10px;
  border:1px solid rgba(255,255,255,0.08);
  overflow:hidden;
  background:rgba(21,31,29,0.5);
  min-height:480px;
}
.merge-demo-panels{
  display:grid;
  grid-template-columns:1fr 1fr;
  grid-template-rows:1fr 1fr;
  gap:10px;
  padding:12px;
  height:100%;
  min-height:480px;
}

/* Individual panel */
.merge-demo-panel{
  background:rgba(47,70,67,0.35);
  border:1px solid rgba(255,255,255,0.08);
  border-radius:8px;
  padding:10px;
  display:flex;
  flex-direction:column;
  transition:border-color 0.3s ease, box-shadow 0.3s ease;
}
.merge-demo-panel.active{
  border-color:rgba(236,86,67,0.5);
  box-shadow:0 0 12px rgba(236,86,67,0.15);
}
.merge-demo-panel-title{
  margin:0 0 8px;
  font-size:13px;
  font-weight:700;
  color:#ec5643;
  display:flex;
  align-items:center;
  gap:6px;
}
.merge-demo-panel-tag{
  font-weight:400;
  font-size:11px;
  color:#8a9b97;
}
.merge-demo-panel-stops{
  flex:1;
  display:flex;
  flex-direction:column;
  gap:4px;
  overflow-y:auto;
  scrollbar-width:thin;
  scrollbar-color:#2a3a36 transparent;
}
.merge-demo-panel-stops::-webkit-scrollbar{width:5px}
.merge-demo-panel-stops::-webkit-scrollbar-track{background:transparent}
.merge-demo-panel-stops::-webkit-scrollbar-thumb{background:#2a3a36;border-radius:3px}

/* File/description display */
.merge-demo-panel-files{
  padding:6px 8px;
  margin-bottom:4px;
  border-radius:6px;
  font-size:11px;
  line-height:1.4;
  color:#8a9b97;
  border:1px solid rgba(255,255,255,0.06);
  background:rgba(21,31,29,0.5);
}
.merge-demo-panel-files .file-label{
  font-size:10px;
  font-weight:600;
  color:#5f7a74;
  text-transform:uppercase;
  letter-spacing:0.5px;
  margin-bottom:2px;
}
.merge-demo-panel-files .file-value{
  color:#e8edec;
  font-style:italic;
}
.merge-demo-panel-files.file-changed{
  border-color:#f97316;
  background:rgba(249,115,22,0.08);
}
.merge-demo-panel-files.file-conflict{
  border-color:#ec5643;
  background:rgba(236,86,67,0.1);
}

/* Stop cards */
.merge-demo-stop{
  display:flex;
  align-items:center;
  gap:8px;
  padding:6px 10px;
  border-radius:6px;
  background:rgba(21,31,29,0.6);
  border-left:3px solid #5f7a74;
  font-size:12px;
  color:#e8edec;
  transition:background 0.3s ease, border-color 0.3s ease, opacity 0.3s ease, transform 0.3s ease;
}
.merge-demo-stop.highlight{
  background:rgba(236,86,67,0.12);
  transform:translateX(4px);
}
.merge-demo-stop-name{
  flex:1;
  font-weight:600;
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}
.merge-demo-stop-time{
  font-size:11px;
  color:#8a9b97;
  white-space:nowrap;
}
.merge-demo-stop-icon{
  font-size:11px;
  width:16px;
  text-align:center;
  flex-shrink:0;
}

/* Stop status border colours */
.merge-demo-stop--unchanged{ border-left-color:#5f7a74; }
.merge-demo-stop--modified{ border-left-color:#f59e0b; }
.merge-demo-stop--added{ border-left-color:#22c55e; }
.merge-demo-stop--deleted{ border-left-color:#ef4444; opacity:0.6; text-decoration:line-through; }
.merge-demo-stop--conflict{ border-left-color:#ec5643; background:rgba(236,86,67,0.1); }

/* Phase indicator */
.merge-demo-phase{
  position:absolute;
  top:10px;
  left:10px;
  z-index:10;
  padding:4px 12px;
  border-radius:999px;
  background:rgba(27,37,31,0.85);
  backdrop-filter:blur(4px);
  color:#ec5643;
  font-size:12px;
  font-weight:600;
  pointer-events:none;
  min-height:1em;
}

/* Stats overlay */
.merge-demo-stats{
  position:absolute;
  bottom:12px;
  left:50%;
  z-index:10;
  transform:translateX(-50%);
  padding:8px 20px;
  border-radius:10px;
  background:rgba(27,37,31,0.9);
  backdrop-filter:blur(6px);
  border:1px solid rgba(236,86,67,0.3);
  color:#ec5643;
  font-size:14px;
  font-weight:600;
  text-align:center;
  pointer-events:none;
  white-space:nowrap;
}

/* Sidebar */
.merge-demo-sidebar{
  display:flex;
  flex-direction:column;
  gap:6px;
  position:sticky;
  top:30px;
}
.merge-demo-sidebar .card + .card{
  margin-top:0;
}

/* Scenario tabs */
.merge-demo-tabs{
  display:flex;
  gap:2px;
}
.merge-demo-tab{
  flex:1;
  padding:8px 10px;
  border:1px solid rgba(255,255,255,0.1);
  border-bottom:none;
  background:rgba(47,70,67,0.3);
  color:#8a9b97;
  font-size:12px;
  font-weight:600;
  border-radius:8px 8px 0 0;
  cursor:pointer;
  transition:background 0.2s,color 0.2s;
}
.merge-demo-tab:hover{
  background:rgba(47,70,67,0.5);
  color:#e8edec;
}
.merge-demo-tab.active{
  background:rgba(47,70,67,0.6);
  color:#ec5643;
  border-color:rgba(255,255,255,0.1);
}

/* Description */
.merge-demo-description{
  margin:0;
  padding:8px 14px;
  font-size:12px;
  line-height:1.4;
  color:#8a9b97;
  background:rgba(47,70,67,0.6);
  border:1px solid rgba(255,255,255,0.1);
  border-top:none;
  border-radius:0 0 8px 8px;
}

/* Controls */
.merge-demo-controls.card{
  padding:6px 10px;
  display:flex;
  flex-direction:column;
  gap:4px;
}
.merge-demo-controls-row{
  display:flex;
  align-items:center;
  gap:4px;
}
.merge-demo-controls .btn{
  min-width:auto;
  padding:4px 10px;
  font-size:12px;
}
.merge-demo-controls .btn:disabled{
  opacity:0.4;
  cursor:not-allowed;
}
.merge-demo-speed-label{
  display:flex;
  align-items:center;
  gap:4px;
  font-size:11px;
  color:#8a9b97;
  margin-left:auto;
}
.merge-demo-speed-label input[type="range"]{
  width:90px;
  flex-shrink:0;
  accent-color:#ec5643;
  margin:0;
  padding:0;
}
.merge-demo-speed-value{
  min-width:24px;
  text-align:right;
}

/* Pseudocode panel */
.merge-demo-pseudocode-panel h2{
  margin:0 0 8px;
  font-size:14px;
  color:#ec5643;
}
.merge-demo-code{
  background:#151f1d;
  border-radius:8px;
  padding:6px 8px;
  font-family:'SF Mono','Fira Code','Consolas',monospace;
  font-size:11px;
  line-height:1.1;
  overflow:hidden;
  color:#8a9b97;
  margin:0;
  white-space:pre-wrap;
  word-break:break-word;
  scrollbar-width:thin;
  scrollbar-color:#2a3a36 transparent;
}
.merge-demo-code::-webkit-scrollbar{width:6px;height:6px}
.merge-demo-code::-webkit-scrollbar-track{background:transparent}
.merge-demo-code::-webkit-scrollbar-thumb{background:#2a3a36;border-radius:3px}
.merge-demo-code::-webkit-scrollbar-thumb:hover{background:#3a4a46}
.merge-demo-code::-webkit-scrollbar-corner{background:transparent}
.merge-demo-code code{background:none;padding:0;border:none;border-radius:0;display:block;margin:0}
.merge-demo-code .line{
  display:block;
  padding:0 4px;
  border-radius:3px;
  transition:background 0.3s ease,color 0.3s ease;
}
.merge-demo-code .line.active{
  background:rgba(236,86,67,0.15);
  color:#ec5643;
}

/* Legend — horizontal row */
.merge-demo-legend{
  padding:10px 14px;
}
.merge-demo-legend-row{
  display:flex;
  gap:16px;
  flex-wrap:wrap;
}
.merge-demo-legend-item{
  display:flex;
  align-items:center;
  gap:5px;
  font-size:12px;
  color:#8a9b97;
}
.merge-demo-legend-swatch{
  width:10px;
  height:10px;
  border-radius:50%;
  flex-shrink:0;
}
.merge-demo-legend-swatch--unchanged{background:#5f7a74}
.merge-demo-legend-swatch--modified{background:#f59e0b}
.merge-demo-legend-swatch--added{background:#22c55e}
.merge-demo-legend-swatch--deleted{background:#ef4444}
.merge-demo-legend-swatch--conflict{background:#ec5643}

/* Context / educational cards */
.merge-demo-context{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(280px,1fr));
  gap:16px;
  margin-top:24px;
}
.merge-demo-context .card + .card{
  margin-top:0;
}
.merge-demo-context-card{
  padding:20px;
}
.merge-demo-context-card h3{
  color:#ec5643;
  margin:0 0 6px;
  font-size:15px;
}
.merge-demo-context-card p{
  font-size:13px;
  line-height:1.5;
  color:#8a9b97;
  margin:0;
}

/* Responsive */
@media(max-width:960px){
  .merge-demo-layout{
    grid-template-columns:1fr;
  }
  .merge-demo-sidebar{
    position:static;
  }
}

/* Reduced motion */
@media(prefers-reduced-motion:reduce){
  .merge-demo-panels-wrap{display:none}
  .merge-demo-controls{display:none}
  .merge-demo-code .line{transition:none}
  .merge-demo-stop{transition:none}
}

/* High contrast */
.high-contrast .merge-demo-hero{background:#000}
.high-contrast .merge-demo-main{background:#000}
.high-contrast .merge-demo-main .card{background:#0f1418;border-color:#f97316}
.high-contrast .merge-demo-code{background:#000;border:1px solid #f97316}
.high-contrast .merge-demo-code .line.active{background:rgba(249,115,22,0.2);color:#f97316}
.high-contrast .merge-demo-context-card h3{color:#f97316}
.high-contrast .merge-demo-pseudocode-panel h2{color:#f97316}
.high-contrast .merge-demo-panel-title{color:#f97316}
.high-contrast .merge-demo-panel{border-color:rgba(249,115,22,0.3)}

/* --- Merge demo mobile --- */
@media(max-width:768px){
  .merge-demo-hero{ padding:14px 16px; }
  .merge-demo-hero h1{ font-size:18px; }

  .merge-demo-main{ padding:14px 12px 40px; }

  .merge-demo-panels{
    grid-template-columns:1fr;
    grid-template-rows:auto;
    min-height:auto;
  }
  .merge-demo-panels-wrap{ min-height:auto; }

  .merge-demo-tab{
    padding:10px 8px;
    font-size:11px;
    min-height:44px;
  }

  .merge-demo-controls .btn{
    min-height:44px;
    padding:8px 14px;
  }

  .merge-demo-speed-label input[type="range"]{ width:80px; }

  .merge-demo-code{ font-size:10px; padding:8px; }

  .merge-demo-stats{
    white-space:normal;
    max-width:calc(100% - 24px);
    font-size:12px;
    padding:6px 14px;
  }

  .merge-demo-context{
    grid-template-columns:1fr;
    gap:12px;
  }
}