:root{
  --bg:#0b0f14; --bg2:#0f141b; --panel:#121922; --panel2:#16202b; --line:#22303d;
  --text:#e8eef4; --muted:#8fa3b3; --accent:#d14a28; --accent2:#e86a3c;
  --ok:#3ecf8e; --warn:#f2b544; --mono:'SF Mono',ui-monospace,Menlo,Consolas,monospace;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;line-height:1.55;min-height:100vh}
a{color:var(--accent2);text-decoration:none}
a:hover{text-decoration:underline}
.muted{color:var(--muted)}
.mono{font-family:var(--mono)}
.hidden{display:none!important}
.mt{margin-top:16px}

/* top bar */
.topbar{display:flex;align-items:center;gap:24px;padding:14px 28px;border-bottom:1px solid var(--line);background:var(--bg2);position:sticky;top:0;z-index:20}
.brand{display:flex;align-items:center;gap:8px;font-size:17px}
.brand .clapper{font-size:20px}
.brand .tag{font-size:11px;color:var(--muted);border:1px solid var(--line);border-radius:999px;padding:2px 8px;margin-left:6px}
nav{display:flex;gap:6px;flex:1}
.nav-link{color:var(--muted);padding:6px 12px;border-radius:8px;font-size:14px;font-weight:600}
.nav-link:hover{color:var(--text);text-decoration:none;background:var(--panel)}
.nav-link.active{color:var(--text);background:var(--panel2);border:1px solid var(--line)}
.status-pill{display:flex;align-items:center;gap:8px;font-size:12px;color:var(--muted);border:1px solid var(--line);border-radius:999px;padding:5px 12px}
.dot{width:8px;height:8px;border-radius:50%;background:var(--ok);box-shadow:0 0 8px var(--ok)}

main{padding:28px;max-width:1280px;margin:0 auto}
.tab{display:none}
.tab.active{display:block}
h1{font-size:26px;letter-spacing:.3px}
h2{font-size:19px;margin:28px 0 10px}
h3{font-size:13px;text-transform:uppercase;letter-spacing:1.2px;color:var(--muted);margin-bottom:12px;display:flex;align-items:center;gap:8px}
.chip{font-size:10px;text-transform:none;letter-spacing:.4px;border:1px solid var(--line);border-radius:999px;padding:2px 8px;color:var(--muted);font-weight:400}
.lead{font-size:17px;max-width:820px;margin:10px 0 22px}

/* board */
.board-head{display:flex;justify-content:space-between;align-items:flex-end;gap:16px;margin-bottom:18px;flex-wrap:wrap}
.board-actions{display:flex;gap:10px;align-items:center}
select{background:var(--panel2);color:var(--text);border:1px solid var(--line);border-radius:8px;padding:8px 12px;font-size:13px}
.btn{background:var(--panel2);color:var(--text);border:1px solid var(--line);border-radius:8px;padding:9px 14px;font-size:13px;font-weight:600;cursor:pointer;transition:.15s}
.btn:hover{border-color:var(--accent2);color:var(--accent2)}
.btn.primary{background:var(--accent);border-color:var(--accent);color:#fff}
.btn.primary:hover{background:var(--accent2);color:#fff}

.board-grid{display:grid;grid-template-columns:230px 1fr 270px;gap:14px;align-items:start}
.panel{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:16px}

/* stage rail */
.stage-rail{list-style:none;display:flex;flex-direction:column;gap:6px}
.stage-rail li{display:flex;align-items:center;gap:10px;padding:8px 10px;border-radius:8px;border:1px solid transparent;font-size:13px;color:var(--muted)}
.stage-rail li .st-ico{width:22px;text-align:center}
.stage-rail li .st-name{flex:1}
.stage-rail li .st-time{font-family:var(--mono);font-size:11px}
.stage-rail li.done{color:var(--text);border-color:var(--line);background:var(--panel2)}
.stage-rail li.done .st-ico{color:var(--ok)}
.stage-rail li.active{color:var(--text);border-color:var(--accent);background:rgba(209,74,40,.12);box-shadow:0 0 0 1px var(--accent) inset}
.stage-rail li.active .st-ico{animation:pulse 1s infinite}
.stage-rail li.gate-hold{border-color:var(--warn);background:rgba(245,181,68,.1)}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.35}}

/* center */
.panel-row{display:grid;grid-template-columns:1fr 200px;gap:14px;margin-bottom:14px}
.script-page{background:#0d141c;border:1px solid var(--line);border-radius:8px;padding:14px;min-height:150px;font-family:var(--mono);font-size:13px;color:#c9d6e0}
.script-page .line{margin-bottom:10px;opacity:0;transform:translateY(4px);transition:.4s}
.script-page .line.show{opacity:1;transform:none}
.script-page .scene-hd{color:var(--accent2);font-weight:700}
.script-page .placeholder{color:var(--muted);font-style:italic}
.cost-meter{background:#0d141c;border:1px solid var(--line);border-radius:8px;padding:12px}
.cost-value{font-family:var(--mono);font-size:26px;font-weight:700;color:var(--accent2)}
.cost-bar{height:8px;background:var(--bg2);border-radius:99px;margin:10px 0 8px;overflow:hidden}
.cost-fill{height:100%;width:0%;background:linear-gradient(90deg,var(--accent),var(--accent2));transition:width .4s}
.cost-note{font-size:11px;color:var(--muted)}
.quality-row{display:flex;align-items:baseline;gap:8px}
#quality-score{font-family:var(--mono);font-size:22px;font-weight:700;color:var(--ok)}

/* filmstrip */
.filmstrip{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:10px}
.scene-card{background:var(--panel2);border:1px solid var(--line);border-radius:10px;overflow:hidden;opacity:.25;transition:.4s}
.scene-card.revealed{opacity:1}
.scene-card .thumb{height:84px;position:relative}
.scene-card .thumb .grad{position:absolute;inset:0}
.scene-card.generating .thumb::after{content:'';position:absolute;inset:0;background:linear-gradient(100deg,transparent 30%,rgba(255,255,255,.14) 50%,transparent 70%);animation:shimmer 1.2s infinite}
@keyframes shimmer{0%{transform:translateX(-100%)}100%{transform:translateX(100%)}}
.scene-card .body{padding:8px 10px}
.scene-card .sc-title{font-size:12px;font-weight:600}
.scene-card .sc-meta{font-size:10px;color:var(--muted);font-family:var(--mono);margin-top:2px}
.scene-card .sc-badge{position:absolute;top:6px;right:6px;font-size:10px;background:rgba(0,0,0,.55);border-radius:6px;padding:2px 6px;font-family:var(--mono)}
.scene-card.done .sc-badge{color:var(--ok)}
.scene-card.generating .sc-badge{color:var(--warn)}

/* gate */
.gate-card{display:flex;align-items:center;gap:14px;margin-top:14px;border:1px solid var(--warn);background:rgba(245,181,68,.08);border-radius:12px;padding:14px 16px}
.gate-icon{font-size:22px}
.gate-card strong{display:block}
.gate-card .btn{margin-left:auto;white-space:nowrap}

/* activity */
.activity-log{font-family:var(--mono);font-size:11.5px;height:420px;overflow-y:auto;display:flex;flex-direction:column;gap:4px}
.activity-log .ev{opacity:0;transform:translateY(3px);animation:evIn .3s forwards;color:#9fb2c2}
.activity-log .ev .t{color:#5b6f80}
.activity-log .ev.ok{color:var(--ok)}
.activity-log .ev.warn{color:var(--warn)}
.activity-log .ev.accent{color:var(--accent2)}
@keyframes evIn{to{opacity:1;transform:none}}

/* timeline */
.timeline-bar{display:flex;align-items:center;gap:14px;margin-top:14px;background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:12px 16px}
.timeline-bar input[type=range]{flex:1;accent-color:var(--accent)}
#timeline-label{font-size:12px;width:44px}
#timeline-time{font-size:12px;width:52px;text-align:right}

/* library */
.library-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:14px;margin-top:16px}
.lib-card{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:16px;cursor:pointer;transition:.15s}
.lib-card:hover{border-color:var(--accent2);transform:translateY(-2px)}
.lib-card .lc-thumb{height:110px;border-radius:8px;margin-bottom:12px;position:relative}
.lib-card h4{font-size:14px;margin-bottom:4px}
.lib-card .lc-meta{font-size:11.5px;color:var(--muted);display:flex;gap:12px;flex-wrap:wrap;margin-top:8px;font-family:var(--mono)}
.lib-card .lc-status{position:absolute;top:8px;left:8px;font-size:10px;background:rgba(0,0,0,.6);border-radius:6px;padding:2px 8px}

/* about */
.fact-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:12px;margin:20px 0}
.fact{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:16px;text-align:center}
.fact strong{display:block;font-size:26px;color:var(--accent2)}
.fact span{font-size:12px;color:var(--muted)}
.posture{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:12px;margin:16px 0}
.posture-item{display:flex;gap:12px;background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:14px}
.posture-item>span{font-family:var(--mono);color:var(--accent2);font-size:13px}
.posture-item strong{display:block;margin-bottom:4px}
.posture-item p{font-size:13px;color:var(--muted)}
.code{background:#0d141c;border:1px solid var(--line);border-radius:10px;padding:16px;overflow-x:auto;font-family:var(--mono);font-size:12.5px;color:#c9d6e0;margin:10px 0}

.footer{border-top:1px solid var(--line);padding:18px 28px;color:var(--muted);font-size:12px;text-align:center;margin-top:40px}

@media (max-width:1024px){
  .board-grid{grid-template-columns:1fr}
  .panel-row{grid-template-columns:1fr}
  .topbar{flex-wrap:wrap}
}