:root{
  --bg:#f6f7f9; --surface:#ffffff; --surface2:#f0f1f4; --text:#17181c; --muted:#6b7280;
  --border:#e3e5ea; --accent:#4f46e5; --accent-soft:#eef2ff; --danger:#dc2626; --danger-soft:#fef2f2;
  --ok:#16a34a; --warn:#d97706; --shadow:0 1px 3px rgba(16,24,40,.06),0 8px 24px -12px rgba(16,24,40,.12);
  --radius:16px;
}
html[data-theme="dark"]{
  --bg:#0e0f13; --surface:#17181d; --surface2:#1f2026; --text:#ececf1; --muted:#9aa0ad;
  --border:#26272f; --accent:#818cf8; --accent-soft:#1e2030; --danger:#f87171; --danger-soft:#2a1717;
  --shadow:0 1px 3px rgba(0,0,0,.4),0 8px 24px -12px rgba(0,0,0,.6);
}
*{box-sizing:border-box;margin:0;padding:0}
body{background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;font-size:15px;line-height:1.55;-webkit-font-smoothing:antialiased}
.hidden{display:none!important}
button{font:inherit;cursor:pointer}
input,select{font:inherit;color:var(--text)}
code,pre{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:13px}

/* top bar */
.topbar{position:sticky;top:0;z-index:40;display:flex;align-items:center;justify-content:space-between;padding:12px 22px;background:color-mix(in srgb,var(--surface) 88%,transparent);backdrop-filter:blur(10px);border-bottom:1px solid var(--border)}
.brand{display:flex;align-items:center;gap:10px}
.brand-icon{width:34px;height:34px;border-radius:10px;background:var(--accent);color:#fff;display:grid;place-items:center}
.brand-icon svg{width:19px;height:19px}
.brand-name{font-size:18px;font-weight:700;letter-spacing:.02em}
.brand-badge{font-size:12px;color:var(--accent);background:var(--accent-soft);border-radius:999px;padding:2px 10px;font-weight:600}
.top-actions{display:flex;align-items:center;gap:10px}
.status-dot{width:8px;height:8px;border-radius:50%;background:var(--ok);box-shadow:0 0 0 4px color-mix(in srgb,var(--ok) 18%,transparent)}
.status-text{color:var(--muted);font-size:13px}
.icon-btn{width:36px;height:36px;border-radius:10px;border:1px solid var(--border);background:var(--surface);color:var(--muted);display:grid;place-items:center}
.icon-btn svg{width:18px;height:18px}
.icon-btn:hover{color:var(--text)}
.btn{border:1px solid var(--border);background:var(--surface);color:var(--text);border-radius:10px;padding:8px 16px;font-weight:600;font-size:14px;transition:.15s}
.btn:hover{border-color:var(--muted)}
.btn-primary{background:var(--accent);border-color:var(--accent);color:#fff}
.btn-primary:hover{background:color-mix(in srgb,var(--accent) 88%,#000);border-color:transparent}
.btn-ghost{background:transparent}
.btn-small{padding:5px 11px;font-size:13px;border-radius:8px}
.btn-danger{background:var(--danger);border-color:var(--danger);color:#fff}
.btn-danger-ghost{color:var(--danger)}
.btn.wide{width:100%}

/* layout */
.wrap{max-width:1080px;margin:0 auto;padding:22px 18px 40px;display:flex;flex-direction:column;gap:18px}
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:20px 22px}
.card-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px;flex-wrap:wrap}
.card-head h2{font-size:17px;font-weight:700}
.hint{color:var(--muted);font-size:13px;margin-top:10px}
.mt{margin-top:18px}

/* stats */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.stat-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:16px 18px}
.stat-label{color:var(--muted);font-size:13px;margin-bottom:4px}
.stat-value{font-size:24px;font-weight:750}
.stat-sub{font-size:14px;color:var(--muted);font-weight:500}
.stat-note{color:var(--muted);font-size:13px;margin-top:4px}
.stat-ok{color:var(--ok)}
.bar{height:7px;border-radius:99px;background:var(--surface2);margin-top:10px;overflow:hidden}
.bar-fill{height:100%;width:0;background:var(--accent);border-radius:99px;transition:width .4s}
.bar-warn{background:var(--warn)}
@media(max-width:820px){.stats{grid-template-columns:repeat(2,1fr)}}

/* switch */
.switch-row{display:flex;align-items:center;gap:9px;color:var(--muted);font-size:13.5px;cursor:pointer}
.switch{position:relative;width:38px;height:22px;flex:none}
.switch input{opacity:0;width:0;height:0}
.slider{position:absolute;inset:0;background:var(--surface2);border:1px solid var(--border);border-radius:99px;transition:.2s}
.slider:before{content:"";position:absolute;width:16px;height:16px;border-radius:50%;background:var(--muted);top:2px;left:2px;transition:.2s}
.switch input:checked + .slider{background:var(--accent);border-color:var(--accent)}
.switch input:checked + .slider:before{transform:translateX(16px);background:#fff}

/* dropzone */
.dropzone{border:2px dashed var(--border);border-radius:14px;padding:38px 20px;text-align:center;cursor:pointer;transition:.15s;background:var(--surface)}
.dropzone:hover,.dropzone:focus-visible{border-color:var(--accent);outline:none}
.dropzone.drag{border-color:var(--accent);background:var(--accent-soft)}
.dz-icon{width:42px;height:42px;color:var(--accent);margin-bottom:8px}
.dz-title{font-size:16.5px;font-weight:650}
.dz-sub{color:var(--muted);margin-top:3px}
.dz-rules{color:var(--muted);font-size:12.5px;margin-top:10px}
.pin-row{display:flex;align-items:center;gap:12px;margin-top:14px;flex-wrap:wrap}
.pin-row input{border:1px solid var(--border);background:var(--surface);border-radius:10px;padding:9px 13px;min-width:220px}
.pin-hint{color:var(--muted);font-size:13px}

/* queue */
.queue{display:flex;flex-direction:column;gap:10px;margin-top:14px}
.q-item{display:flex;align-items:center;gap:12px;border:1px solid var(--border);border-radius:12px;padding:10px 14px}
.q-thumb{width:44px;height:44px;border-radius:9px;object-fit:cover;background:var(--surface2);flex:none}
.q-main{flex:1;min-width:0}
.q-name{font-weight:600;font-size:14px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.q-bar{height:6px;background:var(--surface2);border-radius:99px;overflow:hidden;margin-top:6px}
.q-bar i{display:block;height:100%;width:0;background:var(--accent);transition:width .2s}
.q-state{font-size:13px;color:var(--muted);flex:none}
.q-state.ok{color:var(--ok)} .q-state.fail{color:var(--danger)}

/* format segmented */
.fmt-group{display:inline-flex;background:var(--surface2);border-radius:10px;padding:3px;gap:2px}
.fmt-group button{border:none;background:transparent;color:var(--muted);padding:5px 12px;border-radius:8px;font-size:13px;font-weight:600}
.fmt-group button.on{background:var(--surface);color:var(--text);box-shadow:0 1px 3px rgba(0,0,0,.12)}

/* session + gallery grids */
.session-grid,.gallery{display:grid;grid-template-columns:repeat(auto-fill,minmax(168px,1fr));gap:14px}
.img-card{border:1px solid var(--border);border-radius:13px;overflow:hidden;background:var(--surface)}
.img-card img.thumb{width:100%;height:128px;object-fit:cover;display:block;cursor:zoom-in;background:var(--surface2)}
.img-meta{padding:9px 11px}
.img-name{font-size:13px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.img-sub{font-size:12px;color:var(--muted);display:flex;gap:6px;align-items:center;flex-wrap:wrap}
.badge-guest{background:#fef3c7;color:#92400e;border-radius:6px;padding:0 6px;font-size:11px;font-weight:700}
html[data-theme="dark"] .badge-guest{background:#3a2c10;color:#fbbf24}
.img-actions{display:flex;gap:6px;padding:0 11px 11px}
.img-actions .btn{flex:1;padding:5px 0;font-size:12.5px}
.btn-del{color:var(--danger);flex:0 0 40px!important}
.gallery.list-view{grid-template-columns:1fr}
.gallery.list-view .img-card{display:flex;align-items:center}
.gallery.list-view .img-card img.thumb{width:76px;height:60px}
.gallery.list-view .img-meta{flex:1}
.gallery.list-view .img-actions{padding:11px}

/* guest note */
.guest-note{display:flex;align-items:center;justify-content:space-between;gap:16px}
.guest-note h3{font-size:15.5px;margin-bottom:3px}
.guest-note p{color:var(--muted);font-size:13.5px;max-width:640px}

/* gallery tools */
.wrap-head{align-items:flex-start}
.gal-tools{display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.gal-tools input[type=search],.gal-tools select{border:1px solid var(--border);background:var(--surface);border-radius:10px;padding:7px 11px;font-size:13.5px}
.count-badge{color:var(--muted);font-size:13px;font-weight:500}
.empty{color:var(--muted);text-align:center;padding:34px 0}
#galMore{margin-top:14px}

/* kv / picgo */
.kv-row{display:flex;align-items:flex-start;gap:10px;padding:9px 0;border-bottom:1px dashed var(--border);flex-wrap:wrap}
.kv-row:last-of-type{border-bottom:none}
.kv-k{width:86px;flex:none;color:var(--muted);font-size:13.5px;padding-top:3px}
.kv-row code{background:var(--surface2);border-radius:8px;padding:4px 9px;word-break:break-all}
.codeblock{background:var(--surface2);border-radius:10px;padding:12px 14px;flex:1;min-width:280px;overflow:auto;white-space:pre-wrap;word-break:break-all}

/* settings */
.settings-grid{display:grid;grid-template-columns:1fr 1fr;gap:26px}
@media(max-width:760px){.settings-grid{grid-template-columns:1fr}}
.sub-block h3{font-size:14.5px;margin-bottom:9px}
.sub-block input{display:block;width:100%;border:1px solid var(--border);background:var(--surface);border-radius:10px;padding:9px 13px;margin-bottom:9px}
.rules{list-style:none;color:var(--muted);font-size:13.5px;display:flex;flex-direction:column;gap:4px}
.rules li:before{content:"·";margin-right:7px;color:var(--accent);font-weight:800}

/* footer */
.foot{text-align:center;color:var(--muted);font-size:12.5px;padding:6px 0 2px}

/* modal */
.modal{position:fixed;inset:0;z-index:80;display:grid;place-items:center;padding:18px}
.modal-back{position:absolute;inset:0;background:rgba(8,9,12,.55);backdrop-filter:blur(3px)}
.modal-box{position:relative;background:var(--surface);border-radius:18px;box-shadow:var(--shadow);max-width:680px;width:100%;max-height:88vh;overflow:auto;padding:20px}
.modal-sm{max-width:380px}
.modal-box h3{font-size:17px;margin-bottom:14px}
.modal-x{position:absolute;top:12px;right:12px;border:none;background:var(--surface2);z-index:2}
.modal-box img{max-width:100%;border-radius:12px;display:block;margin:0 auto}
.dt-meta{color:var(--muted);font-size:13px;margin:13px 0;display:flex;gap:14px;flex-wrap:wrap}
.dt-links{display:flex;flex-direction:column;gap:8px}
.dt-links .kv-row{border:none;padding:0}
.dt-actions{margin-top:16px;text-align:right}
#loginForm input{width:100%;border:1px solid var(--border);background:var(--surface);border-radius:10px;padding:10px 13px;margin-bottom:11px}
.err{color:var(--danger);font-size:13px;margin-top:9px}

/* toast */
.toast{position:fixed;left:50%;bottom:26px;transform:translateX(-50%);background:#17181c;color:#f4f4f5;padding:10px 18px;border-radius:11px;font-size:14px;box-shadow:0 10px 30px rgba(0,0,0,.3);z-index:120}
html[data-theme="dark"] .toast{background:#f4f4f5;color:#17181c}
@media(max-width:560px){.stats{grid-template-columns:1fr 1fr}.stat-value{font-size:20px}.guest-note{flex-direction:column;align-items:flex-start}}