:root{
  --bg:#0f172a; --bg2:#1e293b; --card:#1e293b; --line:#334155;
  --text:#e2e8f0; --muted:#94a3b8; --primary:#3b82f6; --primary2:#2563eb;
  --danger:#ef4444; --ok:#22c55e; --radius:14px;
}
*{box-sizing:border-box}
/* hidden属性を最優先で効かせる（.viewer等のdisplay:flexに負けないように） */
[hidden]{display:none !important}
html,body{margin:0;padding:0}
body{
  background:var(--bg); color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue","Hiragino Kaku Gothic ProN","Noto Sans JP",sans-serif;
  -webkit-text-size-adjust:100%; line-height:1.5;
  padding-bottom:env(safe-area-inset-bottom);
}
.muted{color:var(--muted)}
b{color:var(--text)}

/* ---- buttons ---- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;
  border:1px solid var(--line);background:var(--bg2);color:var(--text);
  padding:10px 16px;border-radius:10px;font-size:15px;cursor:pointer;text-decoration:none;
  -webkit-tap-highlight-color:transparent;transition:filter .15s}
.btn:active{filter:brightness(1.2)}
.btn.primary{background:var(--primary);border-color:var(--primary);color:#fff}
.btn.primary:active{background:var(--primary2)}
.btn.ghost{background:transparent}
.btn.sm{padding:6px 12px;font-size:13px}
.btn.block{width:100%;padding:14px;font-size:16px}
.btn.danger{color:var(--danger);border-color:var(--danger)}

/* ---- login ---- */
.login-body{display:flex;min-height:100vh;align-items:center;justify-content:center;padding:20px}
.login-card{width:100%;max-width:360px;background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius);padding:28px 22px}
.brand{text-align:center;margin-bottom:18px}
.brand img{border-radius:16px}
.brand h1{font-size:20px;margin:10px 0 2px}
form label{display:block;font-size:13px;color:var(--muted);margin:14px 0 0}
form input{width:100%;margin-top:6px;padding:12px;border-radius:10px;border:1px solid var(--line);
  background:var(--bg);color:var(--text);font-size:16px}
form input:focus{outline:2px solid var(--primary);border-color:var(--primary)}
form button{margin-top:20px}
.alert{background:rgba(239,68,68,.12);border:1px solid var(--danger);color:#fecaca;
  padding:10px 12px;border-radius:10px;font-size:14px;margin-bottom:6px}

/* ---- topbar ---- */
.topbar{position:sticky;top:0;z-index:20;background:var(--bg);border-bottom:1px solid var(--line);
  padding-top:env(safe-area-inset-top)}
.topbar-in{display:flex;align-items:center;justify-content:space-between;padding:10px 14px}
.logo{display:flex;align-items:center;gap:8px;font-weight:700}
.logo img{border-radius:8px}
.topbar-right{display:flex;align-items:center;gap:10px}
.user{font-size:13px}
.tabs{display:flex;gap:4px;padding:0 10px 8px}
.tab{flex:1;background:transparent;border:none;color:var(--muted);padding:10px;
  font-size:14px;border-radius:10px;cursor:pointer}
.tab.active{background:var(--bg2);color:var(--text);font-weight:600}

/* ---- install banner ---- */
.install-banner{display:flex;align-items:center;gap:10px;margin:10px 14px 0;
  background:var(--card);border:1px solid var(--primary);border-radius:12px;padding:10px 12px}
.install-banner img{border-radius:8px}
.ib-text{flex:1;display:flex;flex-direction:column;line-height:1.2}
.ib-text .muted{font-size:12px}

/* ---- layout ---- */
.wrap{max-width:900px;margin:0 auto;padding:14px}

/* ---- uploader ---- */
.dropzone{display:block;border:2px dashed var(--line);border-radius:var(--radius);
  padding:26px 16px;text-align:center;cursor:pointer;background:var(--card);transition:border-color .15s}
.dropzone.drag{border-color:var(--primary);background:rgba(59,130,246,.08)}
.dz-icon{font-size:30px}
.dz-title{font-weight:600;margin-top:6px}
.dz-sub{font-size:12px;margin-top:2px}
.dz-target{font-size:13px;margin-top:8px;text-align:center}

/* ---- queue ---- */
.queue{list-style:none;margin:12px 0 0;padding:0;display:flex;flex-direction:column;gap:8px}
.qitem{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:10px 12px}
.qhead{display:flex;justify-content:space-between;gap:10px;font-size:13px}
.qname{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.qbar{height:6px;background:var(--bg);border-radius:6px;overflow:hidden;margin-top:8px}
.qfill{height:100%;width:0;background:var(--primary);transition:width .2s}
.qitem.done .qfill{background:var(--ok)}
.qitem.error .qfill{background:var(--danger)}
.qpct{color:var(--muted);font-variant-numeric:tabular-nums}

/* ---- files ---- */
.files-head{display:flex;align-items:center;justify-content:space-between;margin:22px 0 10px}
.files-head h2{font-size:16px;margin:0}
.files{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:10px}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;overflow:hidden;display:flex;flex-direction:column}
.thumb{aspect-ratio:1/1;background:var(--bg);display:flex;align-items:center;justify-content:center;
  font-size:38px;cursor:pointer;overflow:hidden;position:relative}
.thumb img{width:100%;height:100%;object-fit:cover}
.thumb .play{position:absolute;font-size:34px;opacity:.9;filter:drop-shadow(0 1px 3px rgba(0,0,0,.6))}
.meta{padding:8px 10px}
.fname{font-size:13px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.fsub{font-size:11px;color:var(--muted);margin-top:2px}
.actions{display:flex;border-top:1px solid var(--line)}
.actions button,.actions a{flex:1;background:transparent;border:none;color:var(--muted);
  padding:8px;font-size:12px;cursor:pointer;text-decoration:none;text-align:center}
.actions button:active{background:var(--bg2)}
.actions .del{color:var(--danger)}
.empty{grid-column:1/-1;text-align:center;padding:40px 10px}

/* ---- viewer ---- */
.viewer{position:fixed;inset:0;z-index:50;background:rgba(0,0,0,.92);
  display:flex;align-items:center;justify-content:center;padding:16px}
.viewer-body{max-width:100%;max-height:100%;display:flex;align-items:center;justify-content:center}
.viewer-body video,.viewer-body img{max-width:100%;max-height:85vh;border-radius:8px}
.viewer-close{position:absolute;top:calc(env(safe-area-inset-top) + 10px);right:14px;
  background:rgba(255,255,255,.1);border:none;color:#fff;font-size:20px;width:40px;height:40px;
  border-radius:50%;cursor:pointer}