:root{font:16px/1.5 "Segoe UI",Arial,sans-serif;color:#19343e;background:#f3f6f7;--teal:#006b73;--line:#d4e3e5;--muted:#536873}*{box-sizing:border-box}body{margin:0}h1,h2,h3,p{margin-top:0}h1{font-size:30px;line-height:1.2;letter-spacing:-.025em;margin-bottom:10px}h2{font-size:22px;line-height:1.3;margin:0}h3{font-size:18px;line-height:1.35;margin-bottom:12px}p{margin-bottom:14px}a{color:var(--teal)}button,input,select,textarea{font:inherit}button{background:var(--teal);color:white;padding:11px 17px;border:1px solid var(--teal);border-radius:7px;cursor:pointer;min-height:44px;font-weight:600}button.secondary{background:white;color:var(--teal)}button.danger{color:#9a332b;border-color:#c9847c}button:disabled{opacity:.65;cursor:wait}label{display:flex;flex-direction:column;gap:7px;font-size:14px;font-weight:600;margin:14px 0}input:not([type=checkbox]),select,textarea{padding:11px;border:1px solid #a8bdc1;border-radius:6px;width:100%;max-width:100%;background:white;color:#19343e;font-size:16px;font-weight:400}textarea{resize:vertical;line-height:1.5}input[type=file]{font-size:14px}input[type=checkbox]{accent-color:var(--teal);width:18px;height:18px}.check{flex-direction:row;align-items:center;gap:9px}small,.help-note,.footnote{display:block;font-size:13px;color:var(--muted);line-height:1.6}small{margin-top:10px}form{margin:0}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible{outline:3px solid #00a9a5;outline-offset:3px}[hidden]{display:none!important}
.admin-top{min-height:82px;background:white;border-bottom:1px solid var(--line);padding:14px 32px;display:flex;justify-content:space-between;align-items:center;gap:20px;position:sticky;top:0;z-index:10}.brand{font-weight:800;font-size:24px;text-decoration:none;letter-spacing:-.04em;line-height:1.15;white-space:nowrap}.brand span{font-weight:600}.brand small{font-size:11px;letter-spacing:.04em;margin-top:5px;font-weight:500;color:var(--muted)}.admin-top nav{display:flex;align-items:center;gap:22px;font-size:14px}.admin-layout{display:grid;grid-template-columns:225px minmax(0,1fr);max-width:1640px;margin:auto}.admin-sidebar{padding:32px 20px 32px 28px;position:sticky;top:83px;align-self:start;max-height:calc(100vh - 83px);overflow:auto}.admin-sidebar>p:first-child{font-size:11px;letter-spacing:.12em;color:var(--muted);font-weight:700;padding-inline:10px}.admin-sidebar nav{display:flex;flex-direction:column;gap:5px}.admin-sidebar a{padding:11px 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button{margin-bottom:14px}.device-row{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:17px 0;border-top:1px solid #e0e9ea}.device-row p{font-size:13px;color:var(--muted);margin:5px 0 0}.device-row button{flex:none}.installation-form{display:flex;align-items:end;gap:14px;border-top:1px solid var(--line);padding-top:10px;margin-top:18px}.installation-form label{flex:1}.installation-form button{margin-bottom:14px}.empty-state{font-size:14px;color:var(--muted);background:#f7f9fa;padding:18px;border-radius:6px}.media-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px;align-items:start;margin-top:24px}.media-card{min-width:0;border:1px solid var(--line);border-radius:9px;padding:20px}.current{font-size:13px;color:var(--muted);min-height:40px;margin-bottom:12px}.preview-frame{position:relative;overflow:hidden;border:1px solid #d8e5e7;border-radius:7px;background:#eaf3f3;width:100%;margin-bottom:14px}.format-large{aspect-ratio:904/777}.format-wide{aspect-ratio:904/335}.preview{display:block;position:absolute;inset:0;width:100%;height:100%;object-fit:contain;z-index:1;background:#eaf3f3}.preview:not([src]){visibility:hidden}.preview-empty{position:absolute;inset:0;display:grid;place-items:center;padding:16px;color:var(--muted);font-size:13px}.preview[src]+.preview-empty{display:none}.poster-card{grid-column:1/-1;display:grid;grid-template-columns:minmax(180px,1fr) minmax(0,1.5fr);gap:0 24px}.poster-card>h3,.poster-card>.current{grid-column:1/-1}.poster-card .preview-frame,.poster-card .preview-switch,.poster-card .media-guide{grid-column:1}.poster-card .upload,.poster-card .selection{grid-column:2}.poster-card .upload{grid-row:3/5}.poster-card .selection{grid-row:5/8}.preview-switch{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:10px}.preview-switch button{font-size:12px;padding:7px 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0;font-size:17px;line-height:1.6}.form-actions{display:flex;gap:12px;flex-wrap:wrap}#audit{margin:18px 0 0;padding-left:20px;font-size:14px;color:var(--muted)}#audit li{padding:10px 0;border-bottom:1px solid #e6edef}#audit li.empty-state{list-style:none}.session-alert{padding:20px;border:1px solid #d8a78d;border-radius:9px;background:#fff5eb;margin-bottom:24px}.session-alert p{margin:8px 0 12px}.session-alert a{font-weight:650}#feedback{position:fixed;z-index:30;bottom:20px;left:50%;transform:translateX(-50%);max-width:min(640px,calc(100vw - 32px));margin:0;padding:14px 20px;border-radius:9px;background:#e5f4ed;border:1px solid #9ac3b3;color:#1e5346;box-shadow:0 4px 16px #19343e18;font-size:14px}#feedback:empty{display:none}#feedback.error{background:#fff2ec;border-color:#d6a38f;color:#8a3525}.footnote{margin-bottom:0}.login{max-width:480px;margin:8vh auto;background:white;border:1px solid var(--line);border-radius:12px;padding:32px}.login a{display:inline-block;margin-top:22px}
@media(max-width:1199px){.admin-layout{grid-template-columns:190px minmax(0,1fr)}.admin-main{padding:28px 22px}.admin-sidebar{padding-left:14px;padding-right:12px}.device-forms{grid-template-columns:repeat(2,minmax(0,1fr))}.device-forms button{justify-self:start}.section-title{align-items:flex-start;flex-direction:column;gap:10px}.poster-card{display:block}}
@media(max-width:900px){.admin-top{position:static;padding:18px 22px;align-items:flex-start}.admin-top nav{gap:12px;flex-wrap:wrap;justify-content:flex-end;font-size:13px}.admin-top button{font-size:13px}.admin-layout{display:block}.admin-sidebar{position:static;max-height:none;padding:15px 20px;border-bottom:1px solid var(--line)}.admin-sidebar>p,.sidebar-note{display:none}.admin-sidebar nav{display:flex;flex-direction:row;flex-wrap:wrap;gap:4px}.admin-sidebar a{font-size:13px;padding:8px 10px}.admin-main{padding:24px 20px}.media-grid{grid-template-columns:1fr}.poster-card{grid-column:auto}.status-grid{gap:12px}section{padding:22px;scroll-margin-top:20px}fieldset{scroll-margin-top:20px}h1{font-size:27px}}
@media(max-width:580px){.admin-top{flex-direction:column}.admin-top nav{justify-content:flex-start}.admin-main{padding:22px 14px}.status-grid,.settings-grid,.device-forms{grid-template-columns:1fr}.media-card{padding:16px}.device-forms{gap:0}.installation-form{display:block}section{padding:18px}.mode-label{white-space:normal}.status-tile strong{font-size:17px}.form-actions{flex-direction:column}.form-actions button{width:100%}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}