:root{--bg:#0a0a0f;--card:#12121a;--border:#1e1e30;--text:#c8d6e5;--muted:#5a6a80;--accent:#3b82f6;--accent-glow:rgba(59,130,246,0.25);--danger:#ef4444;--success:#22c55e;--radius:12px;--font:-apple-system,'Segoe UI','PingFang SC','Microsoft YaHei',sans-serif}
*{margin:0;padding:0;box-sizing:border-box}
html,body{height:100%}
body{font-family:var(--font);background:var(--bg);color:var(--text);overflow-x:hidden}

/*===== LOGIN =====*/
.login-body{display:flex;align-items:center;justify-content:center;background:var(--bg)}
.login-container{width:380px;max-width:92vw}
.login-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:48px 40px 36px;text-align:center;box-shadow:0 0 60px rgba(0,0,0,0.5)}
.login-icon{width:56px;height:56px;border-radius:14px;background:linear-gradient(135deg,#3b82f6,#1d4ed8);display:flex;align-items:center;justify-content:center;margin:0 auto 20px;font-size:26px;box-shadow:0 0 24px var(--accent-glow)}
.login-card h2{font-size:22px;font-weight:700;margin-bottom:8px}
.login-sub{color:var(--muted);font-size:14px;margin-bottom:28px}
.login-err{color:var(--danger);font-size:13px;margin-bottom:12px}
.input-group{margin-bottom:14px}
.input-group input,.field input,.field select{width:100%;padding:12px 14px;background:#0a0a12;border:1px solid var(--border);border-radius:8px;color:var(--text);font-size:15px;font-family:var(--font);outline:none;transition:border-color 0.2s}
.input-group input:focus,.field input:focus,.field select:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-glow)}
.btn-primary{width:100%;padding:14px;background:var(--accent);color:#fff;border:none;border-radius:8px;font-size:16px;font-weight:600;cursor:pointer;font-family:var(--font);transition:all 0.2s;display:block;text-align:center}
.btn-primary:hover{background:#2563eb;box-shadow:0 0 18px var(--accent-glow)}

/*===== WATCH PAGE =====*/
html.watch-root,html.watch-root body{height:100%;overflow:hidden}
.watch-body{background:#000;overflow:hidden;height:100vh;height:100dvh;display:flex;flex-direction:column}
.watch-body .screen{display:none;width:100%;flex:1;min-height:0}
.watch-body .screen.active{display:flex;flex-direction:column;align-items:stretch;width:100%}
.page-wrapper{width:100%;flex:1;min-height:0;display:flex;flex-direction:column;margin:0}
.topbar{width:100%;background:var(--card);border-bottom:1px solid var(--border);padding:10px 20px;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:8px;flex-shrink:0;z-index:5}
.topbar .brand{font-weight:700;font-size:16px;display:flex;align-items:center;gap:8px;white-space:nowrap}
.topbar .brand span{width:10px;height:10px;border-radius:50%;background:var(--success);box-shadow:0 0 8px var(--success);animation:pulse-dot 2s infinite}
@keyframes pulse-dot{0%,100%{opacity:1}50%{opacity:.4}}
.btn-group{display:flex;gap:4px;flex-wrap:wrap}
.btn{padding:7px 14px;border-radius:6px;border:1px solid var(--border);background:transparent;color:var(--text);cursor:pointer;font-size:13px;font-family:var(--font);transition:all 0.15s;white-space:nowrap;display:inline-flex;align-items:center;gap:5px;text-decoration:none}
.btn:hover{background:#1e1e30}
.btn.active{background:var(--accent);border-color:var(--accent);color:#fff}
.btn.accent{background:var(--accent);border-color:var(--accent);color:#fff}
.btn.danger{background:var(--danger);border-color:var(--danger);color:#fff}
.btn.success{background:var(--success);border-color:var(--success);color:#fff}
.btn.sm{padding:4px 10px;font-size:11px;border-radius:4px}
.wall-wrap{flex:1;width:100%;min-height:0;background:#000;position:relative;overflow:hidden}
.monitor-wall{position:relative;width:100%;height:100%;flex-shrink:0}
.wall-grid{position:absolute;inset:0;display:grid;gap:0;margin:0;padding:0;background:#000;width:100%;height:100%;border-collapse:collapse}
.wall-grid.cols1{grid-template-columns:1fr;grid-template-rows:1fr}
.wall-grid.cols2{grid-template-columns:repeat(2,minmax(0,1fr));grid-template-rows:1fr}
.wall-grid.cols2x2{grid-template-columns:repeat(2,minmax(0,1fr));grid-template-rows:repeat(2,minmax(0,1fr))}
.wall-grid.cols-wall6{grid-template-columns:repeat(6,1fr);grid-template-rows:1fr 1fr 1fr}
.wall-grid.cols-wall6 .cell[data-slot="0"]{grid-column:1/5;grid-row:1/3}
.wall-grid.cols-wall6 .cell[data-slot="1"]{grid-column:5/7;grid-row:1}
.wall-grid.cols-wall6 .cell[data-slot="2"]{grid-column:5/7;grid-row:2}
.wall-grid.cols-wall6 .cell[data-slot="3"]{grid-column:1/3;grid-row:3}
.wall-grid.cols-wall6 .cell[data-slot="4"]{grid-column:3/5;grid-row:3}
.wall-grid.cols-wall6 .cell[data-slot="5"]{grid-column:5/7;grid-row:3}
.cell-empty{background:#0a0a14}
.cell-add-btn{position:relative;z-index:8;width:100%;height:100%;border:none;background:transparent;color:var(--muted);cursor:pointer;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;font-family:var(--font);transition:color 0.2s,background 0.2s;pointer-events:auto}
.cell-add-btn:hover{background:rgba(59,130,246,0.08);color:var(--accent)}
.cell-add-icon{font-size:48px;line-height:1;font-weight:300;color:var(--accent)}
.cell-add-text{font-size:13px}
.cell-del-btn{position:absolute;top:6px;right:6px;z-index:9;width:28px;height:28px;border-radius:6px;border:1px solid rgba(255,255,255,0.25);background:rgba(0,0,0,0.65);color:#fff;font-size:18px;line-height:1;cursor:pointer;display:flex;align-items:center;justify-content:center;padding:0;opacity:0;transition:opacity 0.2s}
.cell-filled:hover .cell-del-btn{opacity:1}
.is-mobile .cell-filled .cell-del-btn{opacity:1}
.cell.dragging{opacity:0.55}
.picker-hint{color:var(--muted);font-size:13px;margin:-8px 0 14px}
.stream-picker-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:10px;max-height:50vh;overflow-y:auto;margin-bottom:8px}
.stream-pick-item{padding:12px 14px;text-align:left;border-radius:8px;border:1px solid var(--border);background:#0a0a12;color:var(--text);font-size:14px;cursor:pointer;font-family:var(--font);transition:all 0.15s}
.stream-pick-item:hover:not(:disabled){border-color:var(--accent);background:rgba(59,130,246,0.1)}
.stream-pick-item.used,.stream-pick-item:disabled{opacity:0.45;cursor:not-allowed;color:var(--muted)}
.is-mobile .monitor-wall.swipe-enabled .wall-swipe-layer{cursor:grab}
.is-mobile .monitor-wall.swipe-enabled .wall-swipe-layer:active{cursor:grabbing}
.cell{position:relative;background:#000;overflow:hidden;min-width:0;min-height:0;margin:0;padding:0}
.cell-media{position:absolute;inset:0;overflow:hidden;background:#000}
.cell iframe{position:absolute;top:50%;left:50%;border:none;display:block;background:#000;transform:translate(-50%,-50%)}
.cell-label{position:absolute;top:8px;left:8px;background:rgba(0,0,0,0.75);color:#fff;padding:3px 10px;border-radius:4px;font-size:12px;z-index:5;pointer-events:none;transition:opacity 0.4s}
.cell-status{position:absolute;top:8px;right:8px;padding:3px 8px;border-radius:4px;font-size:11px;z-index:5;pointer-events:none;transition:opacity 0.4s}
.cell-status.online{background:rgba(34,197,94,0.2);color:var(--success)}
.cell-status.offline{background:rgba(239,68,68,0.2);color:var(--danger)}
.cell-status.loading{background:rgba(59,130,246,0.2);color:var(--accent)}
.cell-loader{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;background:#0a0a14;z-index:4;transition:opacity 0.35s}
.cell-loader.hide{opacity:0;pointer-events:none}
.spinner{width:36px;height:36px;border:3px solid #1e1e30;border-top-color:var(--accent);border-radius:50%;animation:spin 0.8s linear infinite}
.loader-text{color:var(--muted);font-size:11px;margin-top:10px}
@keyframes spin{to{transform:rotate(360deg)}}
.page-indicator{position:absolute;bottom:16px;left:50%;transform:translateX(-50%);background:rgba(0,0,0,0.7);color:#fff;padding:4px 14px;border-radius:20px;font-size:12px;z-index:10;pointer-events:none;transition:opacity 0.4s}
.nav-hint{position:absolute;bottom:16px;left:50%;transform:translateX(-50%);color:rgba(255,255,255,0.35);font-size:12px;z-index:10;pointer-events:none;transition:opacity 0.4s;white-space:nowrap}
.wall-swipe-layer{display:none!important}
.monitor-wall.swipe-enabled .wall-wrap{touch-action:pan-y}
.is-mobile .monitor-wall.swipe-enabled .nav-hint{color:rgba(255,255,255,0.55);font-size:13px;padding:6px 14px;background:rgba(0,0,0,0.45);border-radius:20px}
.footer{width:100%;padding:6px 20px;background:var(--card);border-top:1px solid var(--border);text-align:center;font-size:11px;color:var(--muted);flex-shrink:0}
.footer a{color:var(--accent);text-decoration:none}
.fs-exit-btn{position:fixed;top:16px;right:16px;z-index:9999;background:rgba(0,0,0,0.7);color:#fff;border:1px solid rgba(255,255,255,0.3);border-radius:8px;padding:10px 18px;font-size:14px;cursor:pointer;font-family:var(--font);display:none;align-items:center;gap:6px;transition:opacity 0.35s,background 0.2s}
.fs-exit-btn.show{display:flex}
.fs-exit-btn.chrome-hidden{opacity:0!important;pointer-events:none!important}
body.css-fs .wall-wrap{position:fixed;inset:0;z-index:9000;width:100%;height:100%;display:block}
body.css-fs .topbar,body.css-fs .footer{display:none}
body.css-fs .page-wrapper{background:#000;max-width:none;width:100%;height:100%;flex:1}
body.css-fs .monitor-wall{position:absolute;inset:0;width:100%!important;height:100%!important;max-width:none!important;aspect-ratio:auto!important}
body.css-fs .wall-grid{position:absolute;inset:0}
.monitor-wall:fullscreen,.monitor-wall:-webkit-full-screen{position:fixed;inset:0;width:100%!important;height:100%!important;max-width:none!important;aspect-ratio:auto!important;background:#000}
.monitor-wall:fullscreen .wall-grid,.monitor-wall:-webkit-full-screen .wall-grid{position:absolute;inset:0}
.labels-hidden .cell-label,.labels-hidden .cell-status,.labels-hidden .page-indicator,.labels-hidden .nav-hint{opacity:0!important;pointer-events:none!important}
body:not(.is-mobile) .monitor-wall.labels-hidden .cell-del-btn,
body:not(.is-mobile) .monitor-wall.labels-hidden .cell-add-btn{opacity:0!important;pointer-events:none!important;transition:opacity 0.35s}
.modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,0.8);display:flex;align-items:center;justify-content:center;z-index:10000;opacity:0;pointer-events:none;transition:opacity 0.25s}
.modal-overlay.show{opacity:1;pointer-events:auto}
.monitor-wall .modal-overlay.picker-in-wall,
.monitor-wall:fullscreen .modal-overlay.picker-in-wall,
.monitor-wall:-webkit-full-screen .modal-overlay.picker-in-wall{z-index:10050}
body.css-fs .monitor-wall .modal-overlay.picker-in-wall{z-index:10050}
.modal-box{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:28px 32px;width:440px;max-width:92vw}
.modal-box h3{font-size:18px;margin-bottom:20px;color:var(--accent)}
.field{margin-bottom:14px}
.field > label:not(.perm-check){display:block;font-size:13px;color:var(--muted);margin-bottom:5px}
.field.perm-block > label.perm-title{display:block;font-size:13px;color:var(--muted);margin-bottom:8px}
label.perm-check{display:inline-flex!important;align-items:center;gap:8px;font-size:13px;cursor:pointer;color:var(--text);margin:0 0 6px 0;line-height:1.4;user-select:none}
label.perm-check input[type=checkbox],.perm-check > input[type=checkbox]{width:16px;height:16px;margin:0;flex-shrink:0;cursor:pointer}
.perm-check > label{display:inline;margin:0;font-size:13px;color:var(--text);cursor:pointer;font-weight:normal}
.perm-check > span{line-height:1.4}
.perm-toolbar{display:flex;gap:8px;margin:8px 0 4px;flex-wrap:wrap}
.modal-actions{display:flex;justify-content:flex-end;gap:8px;margin-top:20px}

/*===== ADMIN =====*/
.admin-body{background:var(--bg)}
.admin-wrapper{min-height:100vh;display:flex}
.admin-nav{width:220px;background:var(--card);border-right:1px solid var(--border);padding:20px 0;flex-shrink:0;display:flex;flex-direction:column}
.admin-brand{padding:0 20px 20px;font-weight:700;font-size:16px;border-bottom:1px solid var(--border);margin-bottom:10px}
.admin-nav-links{flex:1;display:flex;flex-direction:column;gap:2px;padding:0 10px}
.nav-link{display:block;padding:10px 12px;color:var(--text);text-decoration:none;border-radius:6px;font-size:14px;transition:background 0.15s}
.nav-link:hover{background:#1e1e30}
.nav-link.active{background:var(--accent);color:#fff}
.nav-link.danger{color:var(--danger)}
.admin-main{flex:1;padding:24px 32px;overflow-x:auto;min-width:0}
.admin-main h1{font-size:24px;margin-bottom:20px}
.admin-main h2{font-size:18px;margin:30px 0 14px;color:var(--accent)}
.admin-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px;flex-wrap:wrap;gap:10px}
.admin-header h1{margin-bottom:0}
.stats-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:16px;margin-bottom:28px}
.stat-card{background:var(--card);border:1px solid var(--border);border-radius:8px;padding:20px;text-align:center}
.stat-num{font-size:32px;font-weight:700;color:var(--accent)}
.stat-label{font-size:13px;color:var(--muted);margin-top:6px}
.admin-table{width:100%;border-collapse:collapse;font-size:13px}
.admin-table th{text-align:left;padding:10px 12px;background:var(--card);border-bottom:2px solid var(--border);color:var(--muted);font-weight:600;font-size:12px;text-transform:uppercase}
.admin-table td{padding:10px 12px;border-bottom:1px solid var(--border)}
.admin-table tr:hover td{background:rgba(59,130,246,0.05)}
.admin-hint{color:var(--muted);font-size:13px;margin:-8px 0 16px;line-height:1.5}
.modal-box.modal-wide{width:min(640px,94vw)}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
@media(max-width:560px){.field-row{grid-template-columns:1fr}}
.perm-block{margin-top:8px}
.perm-title{display:block;font-size:13px;color:var(--muted);margin-bottom:8px}
.perm-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:8px 12px;margin-top:10px;padding:12px;background:#0a0a12;border-radius:8px;border:1px solid var(--border)}
.watch-limit-overlay{position:fixed;inset:0;z-index:9999;background:rgba(0,0,0,0.85);display:flex;align-items:center;justify-content:center;padding:24px}
.watch-limit-box{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:28px 32px;max-width:400px;text-align:center}
.watch-limit-box h3{margin:0 0 12px;color:var(--accent)}
.watch-limit-box p{color:var(--muted);font-size:14px;margin:0 0 20px}
.admin-actions{white-space:nowrap}
code{font-family:monospace;background:rgba(59,130,246,0.1);padding:2px 6px;border-radius:4px;font-size:12px}
.badge{padding:2px 8px;border-radius:10px;font-size:11px;font-weight:600}
.badge.success{background:rgba(34,197,94,0.2);color:#22c55e}
.badge.danger{background:rgba(239,68,68,0.2);color:#ef4444}
.badge.muted{background:rgba(90,106,128,0.2);color:var(--muted)}

/* PC：顶栏+四画面+底栏同一居中列（与监控墙同宽，最大约 1200px） */
@media(min-width:769px){
.page-wrapper{max-width:none;width:100%;align-items:center}
.watch-stage{display:flex;flex-direction:column;flex:1;min-height:0;max-width:100%;margin:0 auto;width:100%}
.watch-stage .topbar,.watch-stage .footer{width:100%;flex-shrink:0}
.watch-stage .wall-wrap{flex:1;width:100%;min-height:0}
.watch-body:not(.css-fs) .monitor-wall{position:relative;inset:auto;margin:0;width:100%}
.watch-body:not(.css-fs) .monitor-wall .wall-grid{position:absolute;inset:0}
body.css-fs .watch-stage{width:100%!important;max-width:none!important}
}

/*===== RESPONSIVE =====*/
@media(max-width:768px){
.page-wrapper{max-width:none;align-items:stretch}
.watch-stage{width:100%!important;max-width:none!important;flex:1;min-height:0;display:flex;flex-direction:column}
.wall-wrap{display:block;flex:1}
.monitor-wall{position:absolute;inset:0;width:100%;height:100%}
.topbar{padding:6px 8px}
.btn{padding:5px 8px;font-size:11px}
.wall-grid.cols2x2{grid-template-columns:1fr;grid-template-rows:repeat(4,1fr)}
.wall-grid.cols-wall6{grid-template-columns:repeat(6,1fr);grid-template-rows:1fr 1fr 1fr}
.wall-grid.cols-wall6 .cell[data-slot="0"]{grid-column:1/5;grid-row:1/3}
.wall-grid.cols-wall6 .cell[data-slot="1"]{grid-column:5/7;grid-row:1}
.wall-grid.cols-wall6 .cell[data-slot="2"]{grid-column:5/7;grid-row:2}
.wall-grid.cols-wall6 .cell[data-slot="3"]{grid-column:1/3;grid-row:3}
.wall-grid.cols-wall6 .cell[data-slot="4"]{grid-column:3/5;grid-row:3}
.wall-grid.cols-wall6 .cell[data-slot="5"]{grid-column:5/7;grid-row:3}
.wall-grid.cols2{grid-template-columns:1fr;grid-template-rows:repeat(2,minmax(0,1fr))}
.wall-grid.fit-contain .cell-media{display:flex;align-items:center;justify-content:center;background:#000}
.wall-grid.fit-contain .cell iframe{position:relative;top:auto;left:auto;transform:none;flex-shrink:0;max-width:100%;max-height:100%}
.watch-body .monitor-wall.mobile-fit-contain{position:relative;width:100%;max-height:100%}
.watch-body .wall-wrap:has(.mobile-fit-contain){display:flex;align-items:center;justify-content:center;flex:1;min-height:0}
.cell-label{font-size:10px;padding:2px 7px;top:4px;left:4px}
.cell-status{font-size:10px;padding:2px 6px;top:4px;right:4px}
.fs-exit-btn{top:8px;right:8px;padding:7px 12px;font-size:12px}
.admin-wrapper{flex-direction:column}
.admin-nav{width:100%;flex-direction:row;flex-wrap:wrap;padding:8px 12px;gap:4px}
.admin-brand{width:100%;padding:0 0 8px;border:none;margin:0}
.admin-nav-links{flex-direction:row;flex-wrap:wrap;padding:0;gap:2px}
.admin-main{padding:16px}
}
@media(max-width:480px){
.btn{padding:5px 7px;font-size:10px;border-radius:4px}
.topbar .brand{font-size:13px}
.stats-grid{grid-template-columns:repeat(2,1fr)}
}