:root{--night:#071925;--night2:#0a2331;--night3:#0d2a38;--cyan:#73d6ec;--sky:#a1dbeb;--ink:#132b39;--muted:#667b87;--line:rgba(140,207,228,.17);--focus:#91eaff}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;min-width:320px;background:#06151f;color:#f5f9fb;font-family:Inter,"Segoe UI",Arial,system-ui,sans-serif;-webkit-font-smoothing:antialiased}button,input,select{font:inherit}button{cursor:pointer}button:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid var(--focus);outline-offset:3px}button:disabled{cursor:not-allowed;opacity:.45}[hidden]{display:none!important}img{display:block;max-width:100%}kbd{display:inline-grid;place-items:center;min-width:21px;height:21px;padding:0 5px;border:1px solid rgba(139,204,225,.26);border-radius:5px;font:600 11px/1 Arial,sans-serif;color:#b8d6e0}
/* Sign in: true conference-portal layout, not an app dashboard */
.login-layout{min-height:100vh;min-height:100dvh;display:grid;grid-template-columns:minmax(0,1.07fr) minmax(420px,.93fr)}.login-story{background:radial-gradient(ellipse at 66% 66%,rgba(21,110,144,.24),transparent 51%),linear-gradient(145deg,#0c2838,#061722 70%);padding:38px clamp(38px,5vw,88px) 29px;display:flex;flex-direction:column;position:relative;overflow:hidden;isolation:isolate}.login-story:after{content:"";position:absolute;z-index:-1;width:650px;height:650px;right:-340px;top:9%;border:1px solid rgba(95,199,226,.16);border-radius:50%;box-shadow:0 0 0 92px rgba(70,174,208,.022),0 0 0 188px rgba(70,174,208,.02),0 0 0 300px rgba(70,174,208,.012)}.story-lines{position:absolute;z-index:-1;inset:0;opacity:.17;background-image:linear-gradient(#74d6ed22 1px,transparent 1px),linear-gradient(90deg,#74d6ed22 1px,transparent 1px);background-size:80px 80px;mask-image:linear-gradient(transparent 5%,black 90%)}.identity{display:flex;align-items:center;gap:14px}.logo-box{width:58px;height:58px;background:#f5fbfd;border-radius:13px;padding:6px}.logo-box img{height:100%;width:100%}.identity strong{display:block;font-size:23px;font-weight:800;letter-spacing:.02em}.identity strong span{font-weight:500;color:#8dd3e5}.identity small{display:block;margin-top:6px;color:#9dbdcc;font-size:10px;font-weight:700;letter-spacing:.095em;text-transform:uppercase}.story-center{margin:auto 0;padding:70px 0;max-width:700px}.eyebrow{display:flex;align-items:center;gap:10px;font-size:11px;letter-spacing:.16em;font-weight:800;color:#75cfe4}.eyebrow i{width:25px;height:2px;background:#75cfe4}.story-center h1{font-size:clamp(50px,5vw,82px);letter-spacing:-.054em;line-height:1.055;font-weight:730;margin:26px 0}.title-dot{color:#6dc9e4}.story-description{color:#b0c4cd;max-width:500px;line-height:1.85;font-size:16px}.story-rule{height:1px;background:linear-gradient(90deg,#79bdcb55,transparent);margin:40px 0 19px}.story-mini{display:flex;flex-wrap:wrap;gap:16px 28px;color:#a6c0cd;font-size:12px}.story-footer{display:flex;flex-wrap:wrap;gap:14px 26px;justify-content:space-between;font-size:10px;letter-spacing:.105em;color:#85a9ba;font-weight:750}
.login-form-side{background:#f9fbfd;min-height:100vh;display:flex;flex-direction:column;justify-content:space-between;padding:36px clamp(34px,6vw,108px) 28px;color:var(--ink)}.login-topline,.login-bottom{display:flex;justify-content:space-between;gap:10px;color:#9aaab3;font-size:10px;font-weight:800;letter-spacing:.08em}.status-mark{color:#2a6175;display:inline-flex;align-items:center;gap:9px}.status-mark i{height:6px;width:6px;background:#41a990;border-radius:100%}.login-form-wrap{max-width:440px;width:100%;margin:40px auto}.login-lock{width:56px;height:56px;border:1px solid #dfebf0;border-radius:16px;display:grid;place-items:center;color:#277995;background:white;box-shadow:0 8px 23px #a3bdc119}.login-lock svg{width:26px;height:26px}.login-form-wrap h2{font-size:42px;line-height:1.1;letter-spacing:-.05em;margin:21px 0 10px}.login-sub{font-size:14px;color:#72818d;line-height:1.7;margin-bottom:31px}.form-label{display:block;font-weight:750;font-size:13px;margin:20px 0 9px}.login-form-wrap input{width:100%;height:52px;border:1px solid #d3e0e6;border-radius:9px;color:#1a3340;background:white;padding:0 16px;outline:none}.login-form-wrap input:focus{border-color:#2c9cba;box-shadow:0 0 0 4px rgba(44,156,186,.1)}.login-form-wrap input::placeholder{color:#a6b4be}.password-wrap{position:relative}.password-wrap input{padding-right:80px}.password-wrap button{position:absolute;right:8px;top:9px;border:0;background:transparent;padding:9px;font-size:12px;color:#247f9b;font-weight:700}.form-error{font-size:12px;color:#b23139;background:#fff1f1;padding:10px 12px;border-radius:7px;border:1px solid #f2d7d7}.submit{border:0;width:100%;margin-top:26px;height:54px;padding:0 18px;display:flex;align-items:center;justify-content:space-between;border-radius:10px;color:white;background:#0b3e56;font-weight:750;transition:background .15s,transform .15s}.submit:hover{background:#12607b;transform:translateY(-1px)}.demo-access{border-top:1px solid #e0e8ed;margin-top:33px;padding-top:22px}.demo-access strong{display:block;font-size:13px}.demo-access span{font-size:12px;color:#7f929e;display:block;margin:5px 0 13px;line-height:1.6}.demo-access>button{border:1px solid #bbd3de;background:#eff8fb;color:#1c728e;padding:9px 12px;border-radius:7px;font-size:12px;font-weight:800}.demo-access dl{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:16px 0 0}.demo-access dl div{padding:10px 12px;border:1px solid #dbe7ed;border-radius:8px;background:white}.demo-access dt{font-size:10px;color:#758996}.demo-access dd{margin:4px 0 0;font:700 12px/1.4 "Consolas",monospace;letter-spacing:.03em;color:#173b4f}.login-bottom{letter-spacing:0;font-size:11px;font-weight:500}
/* Directory: original conference-kiosk structure */
.portal{min-height:100vh;background:radial-gradient(ellipse at 18% -10%,#10425955,transparent 36%),linear-gradient(148deg,#071c28 0%,#04121c 82%)}.portal-header{min-height:76px;padding:14px 28px;display:flex;align-items:center;justify-content:space-between;gap:15px;background:#07151ddc;border-bottom:1px solid var(--line)}.portal-brand{display:flex;align-items:center;gap:12px}.portal-logo{height:42px;width:42px;border-radius:9px;background:#fff;padding:4px;flex-shrink:0}.portal-logo img{width:100%;height:100%}.portal-brand strong{display:block;font-size:21px;letter-spacing:-.025em}.portal-brand small{display:block;color:#9bb5c2;font-size:11px;margin-top:3px}.portal-right{display:flex;gap:17px;align-items:center}.event-date{text-align:right}.event-date strong,.event-date span{display:block;font-size:12px}.event-date strong{color:#8fdcf0}.event-date span{color:#91a7b3;margin-top:3px}.demo-pill{font-size:10px;letter-spacing:.11em;border:1px solid #225367;background:#113547;padding:8px 10px;border-radius:5px;font-weight:800;color:#9fe2ec;white-space:nowrap}.outline-btn{border:1px solid #2c5664;background:transparent;border-radius:7px;color:#d6e8ec;font-size:12px;padding:10px 12px}.outline-btn:hover,.toolbar-btn:hover{background:#174157}.directory-heading{display:grid;grid-template-columns:minmax(0,.9fr) minmax(350px,1.1fr);gap:34px;align-items:center;padding:23px 28px 19px;border-bottom:1px solid var(--line)}.directory-title-row{display:flex;align-items:baseline;flex-wrap:wrap;gap:10px;margin-top:7px}.directory-title-row h1{font-size:27px;letter-spacing:-.025em;margin:0}.directory-title-row>span{font-size:11px;color:#88a3b0}.search-input{border-radius:9px;border:1px solid #2d5867;display:flex;align-items:center;gap:11px;background:#0c2735;padding:0 13px;height:49px}.search-input:focus-within{border-color:#7adbf0;box-shadow:0 0 0 3px #54bed32b}.search-input svg{width:18px;flex:none;color:#91bbcb}.search-input input{background:transparent;color:white;min-width:0;width:100%;border:0;outline:0;font-size:13px}.search-input input::placeholder{color:#7897a8}.search-caption{display:flex;justify-content:space-between;flex-wrap:wrap;gap:6px;color:#819aa8;font-size:10px;padding:8px 0 0}.search-caption span:first-child{font-weight:800;color:#7ee0ef}.workspace{display:grid;grid-template-columns:minmax(0,1fr) 355px;gap:16px;padding:19px 28px 0;align-items:start}.directory-panel,.preview-panel{border:1px solid #204251;border-radius:12px;background:#081e2b;overflow:hidden;box-shadow:0 18px 45px #0005}.grid-toolbar{display:flex;align-items:center;justify-content:space-between;gap:15px;padding:13px 16px;border-bottom:1px solid #1b3b48;background:#0c2532}.grid-toolbar>div:first-child strong,.grid-toolbar>div:first-child span{display:block}.grid-toolbar strong{font-size:13px}.grid-toolbar>div:first-child span{font-size:10px;color:#91acb9;margin-top:5px}.grid-tools{display:flex;align-items:center;gap:8px}.grid-tools select,.toolbar-btn{border:1px solid #345667;border-radius:7px;padding:9px 11px;background:#123342;color:#d3e7ee;font-size:11px}.toolbar-btn{font-weight:750}.toolbar-btn span{padding-left:8px;color:#83dcec}.poster-grid{padding:17px;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:15px;max-height:calc(100vh - 262px);min-height:310px;overflow-y:auto;scrollbar-color:#315768 transparent;scrollbar-width:thin}.poster-card{display:flex;flex-direction:column;min-width:0;text-align:left;border:1px solid #294856;border-radius:9px;background:#0a222f;padding:0;overflow:hidden;color:inherit;transition:border .12s,background .12s}.poster-card:hover{border-color:#5fb0c6;background:#113443}.poster-card[aria-pressed=true]{border:2px solid #85daeb;background:#11313f}.poster-card .card-img{height:auto;aspect-ratio:16/9;background:white;position:relative;overflow:hidden}.poster-card img{width:100%;height:100%;object-fit:contain}.poster-card .card-meta{display:grid;grid-template-columns:44px minmax(0,1fr);gap:10px;align-items:center;padding:11px}.poster-card .code{display:grid;place-items:center;border-radius:6px;border:1px solid #315566;color:#9ee2f2;font-weight:800;font-size:12px;min-height:32px}.card-meta strong,.card-meta small{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.card-meta strong{font-size:11px;font-weight:700;color:#f0f6f7}.card-meta small{color:#93aab4;font-size:10px;margin-top:5px}.empty-state{text-align:center;padding:55px 18px;color:#b3cdd9}.empty-state button{border:1px solid #5493a4;color:white;background:#123b4c;border-radius:6px;padding:9px 12px}.preview-photo{aspect-ratio:16/9;position:relative;background:#fff}.preview-photo img{width:100%;height:100%;object-fit:contain}.preview-photo span{position:absolute;left:14px;bottom:12px;border:1px solid #ffffff66;background:#0a253ac9;font-size:12px;font-weight:800;padding:7px 10px;border-radius:5px}.preview-content{padding:19px 19px 17px}.preview-top{display:flex;justify-content:space-between;font-size:11px;font-weight:800;color:#82dbee;letter-spacing:.08em}.preview-top span:last-child{color:#8ca7b4;font-weight:500}.preview-content h2{font-size:20px;line-height:1.38;letter-spacing:-.018em;margin:14px 0 24px;min-height:56px}.preview-detail{border-top:1px solid #254350;padding:12px 0}.preview-detail label{display:block;font-size:10px;letter-spacing:.1em;text-transform:uppercase;color:#8daeba;margin-bottom:7px}.preview-detail strong{font-size:13px}.preview-detail p{color:#c5d6dc;font-size:12px;line-height:1.65;margin:0}.display-button{width:100%;border:0;border-radius:7px;background:#8cd9eb;color:#082533;font-weight:850;font-size:13px;padding:16px;display:flex;justify-content:space-between;margin-top:13px}.display-button:hover{background:#b3edfa}.demo-footnote{color:#7995a3;font-size:10px;line-height:1.5;margin:14px 0 0}.portal-foot{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;padding:13px 29px;color:#718f9f;font-size:10px;letter-spacing:.08em}
/* Full screen, controls use bottom strip only; presentation gets real priority */
.viewer{position:fixed;inset:0;z-index:50;background:#02080c}.viewer-stage{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;padding:64px 20px 105px}.viewer-stage img{display:block;max-height:100%;max-width:100%;width:auto;height:auto;object-fit:contain;background:#fff;box-shadow:0 0 50px #0006}.viewer-head{position:absolute;top:0;left:0;right:0;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:13px 25px;background:linear-gradient(#020c13f5,#020c13aa);pointer-events:none}.viewer-brand strong,.viewer-brand span{display:block}.viewer-brand strong{font-size:14px;letter-spacing:.04em}.viewer-brand span{font-size:10px;color:#9db7c4;margin-top:5px}.viewer-indicator{display:flex;gap:14px;align-items:center}.viewer-indicator strong{color:#8de5f4;font-size:17px}.viewer-indicator span{color:#c3d5da;font-size:12px}.viewer-bottom{position:absolute;bottom:0;left:0;right:0;background:linear-gradient(transparent,#061521ee 24%);padding:25px 25px 16px}.viewer-controls{display:flex;justify-content:center;flex-wrap:wrap;gap:9px}.viewer-controls button{background:#103043f7;border:1px solid #396276;color:white;border-radius:6px;padding:12px 16px;font-size:12px;font-weight:750;min-width:110px}.viewer-controls button:hover{background:#1b566c}.viewer-controls button:nth-child(2){background:#e4f6fb;color:#0c3243;border-color:#e4f6fb}.viewer-caption{display:flex;justify-content:space-between;gap:20px;align-items:center;margin-top:12px;font-size:10px;color:#b3c6d0}.viewer-caption span:first-child{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:70%}.viewer-caption span:last-child{color:#78d5e8;font-weight:850;letter-spacing:.1em;white-space:nowrap}.play-progress{height:3px;position:absolute;bottom:0;left:0;right:0;background:#134056}.play-progress span{display:block;width:0;height:100%;background:#86ebfa}
/* Operational drawer */
.drawer-backdrop{position:fixed;inset:0;background:#0009;z-index:69}.staff-drawer{position:fixed;z-index:70;top:0;right:0;bottom:0;width:min(435px,100%);overflow:auto;background:#f6fafb;color:#163241;box-shadow:-35px 0 70px #0008;padding:27px 28px}.staff-header{display:flex;justify-content:space-between;align-items:start}.staff-header .eyebrow{color:#36849f}.staff-header h2{font-size:27px;letter-spacing:-.04em;margin:8px 0 0}.staff-header button{background:transparent;border:1px solid #cad9df;border-radius:6px;width:37px;height:37px;color:#264c5c}.staff-intro{font-size:13px;line-height:1.7;color:#5f7883}.staff-status{margin:26px 0;padding:18px;background:#0b2c3a;color:white;border-radius:9px}.staff-status span,.staff-status strong,.staff-status small{display:block}.staff-status span{letter-spacing:.12em;color:#75c9dc;font-size:10px;font-weight:850}.staff-status strong{font-size:17px;margin:9px 0}.staff-status small{color:#b2d0da;font-size:12px}.staff-group{padding:17px 0;border-bottom:1px solid #d7e3e7}.staff-group label{display:block;font-weight:800;font-size:13px;margin-bottom:10px}.quick-form{display:grid;grid-template-columns:1fr 90px;gap:8px}.staff-group input,.staff-group select{padding:11px;width:100%;border-radius:6px;border:1px solid #c9dae2;background:white;color:#183746}.staff-group button{border:1px solid #1a5d75;background:#1a5d75;color:white;border-radius:6px;padding:11px;font-size:12px;font-weight:800}.staff-group button:hover{background:#267e95}.staff-group .staff-action{margin-top:10px;width:100%}.staff-group .staff-reset{width:100%;background:white;color:#205b70}.staff-group #quick-error{font-size:12px;color:#b62b47}.staff-guide{border:1px solid #d5e3e8;border-radius:9px;background:white;padding:16px;margin-top:22px}.guide-head{display:flex;justify-content:space-between;align-items:center;gap:10px}.guide-head strong{font-size:13px}.guide-head button{font-size:11px;background:#f1f7f9;border:1px solid #d6e1e7;padding:6px 9px;border-radius:4px}.guide-head button.selected{background:#0c4056;color:white}.staff-guide ol{padding-left:20px;color:#4e6875;font-size:12px;line-height:1.9}.staff-disclaimer{font-size:11px;color:#79919e;line-height:1.7;margin:20px 0}
@media(max-width:1200px){.workspace{grid-template-columns:minmax(0,1fr) 330px}.poster-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.directory-heading{grid-template-columns:minmax(0,.75fr) minmax(330px,1.25fr)}.event-date{display:none}}
@media(max-width:870px){.login-layout{grid-template-columns:1fr}.login-story{min-height:330px;padding:26px 28px}.story-center{padding:50px 0}.story-center h1{font-size:47px}.story-footer{font-size:10px}.login-form-side{min-height:auto;padding:25px 30px}.login-form-wrap{margin:38px auto}.workspace{grid-template-columns:1fr}.poster-grid{grid-template-columns:repeat(3,minmax(0,1fr));max-height:none;overflow:visible}.preview-panel{display:grid;grid-template-columns:42% 58%}.preview-content{padding:18px}.directory-heading{grid-template-columns:1fr;gap:16px}.portal-foot{padding-bottom:25px}.viewer-stage{padding-bottom:142px}}
@media(max-width:630px){.login-story{min-height:300px;padding:22px}.story-center{padding:40px 0}.story-center h1{font-size:43px;margin:18px 0}.story-description{font-size:13px}.story-mini{font-size:10px;gap:12px}.story-footer span:last-child{display:none}.identity small{max-width:280px;white-space:normal;line-height:1.5}.login-form-side{padding:24px}.login-bottom{flex-direction:column}.portal-header{padding:13px 17px}.portal-brand strong{font-size:16px}.portal-brand small{font-size:9px;line-height:1.5;max-width:200px}.demo-pill{display:none}.portal-right{gap:7px}.outline-btn{font-size:11px;padding:8px}.directory-heading{padding:20px 16px}.directory-title-row h1{font-size:24px}.workspace{padding:0 16px;gap:14px}.grid-toolbar{align-items:stretch;flex-direction:column}.grid-tools{justify-content:space-between}.poster-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;padding:10px}.poster-card .card-meta{grid-template-columns:1fr;padding:9px}.poster-card .code{min-height:24px;width:42px;font-size:10px}.poster-card .card-meta small{font-size:9px}.preview-panel{display:block}.preview-content h2{min-height:0}.portal-foot{padding:16px}.portal-foot span:last-child{letter-spacing:0}.viewer-head{padding:10px 14px}.viewer-stage{padding:65px 10px 184px}.viewer-bottom{padding:15px 12px 13px}.viewer-controls{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:7px}.viewer-controls button{padding:10px 4px;min-width:0}.viewer-controls button:last-child{grid-column:span 2;padding:8px}.viewer-caption{margin-top:9px;font-size:9px}.staff-drawer{padding:22px}}
@media(max-width:390px){.poster-grid{grid-template-columns:1fr}.login-form-wrap h2{font-size:37px}.demo-access dl{grid-template-columns:1fr}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.submit,.poster-card{transition:none}}

/* v1.2: Usability refinements, restrained original event identity retained */
.reset-filters{border:0;background:none;color:#9ae9f6;font-size:11px;font-weight:750;padding:0 4px;white-space:nowrap;text-decoration:underline;text-underline-offset:3px}
.grid-tools{flex-wrap:wrap}.grid-tools .muted-btn{color:#c4dce5;background:transparent}
.poster-card{position:relative;display:block}
.poster-card[data-selected="true"]{border:2px solid #85daeb;background:#11313f}
.poster-card .card-select{padding:0;width:100%;background:none;border:0;color:inherit;text-align:left;display:block;cursor:pointer}
.poster-card .card-select:focus-visible,.poster-card .card-open:focus-visible{outline:3px solid var(--focus);outline-offset:-3px}
.poster-card .card-open{width:100%;background:#123443;color:#9ce8f6;border:0;border-top:1px solid #2a4e5e;padding:9px 13px;display:flex;align-items:center;justify-content:space-between;gap:8px;font-size:11px;font-weight:800}
.poster-card .card-open:hover{background:#1d5266;color:white}
.poster-card .card-select[aria-pressed="true"] .card-img:after{content:"SELECTED";position:absolute;top:8px;right:8px;background:#063c50eb;padding:5px 7px;border-radius:4px;color:#dcf9ff;font-size:9px;font-weight:800;letter-spacing:.05em}
.preview-navigation{display:flex;gap:8px;align-items:center;justify-content:space-between;border-top:1px solid #254350;padding:13px 0 0}
.preview-navigation button{border:1px solid #315869;background:#103141;border-radius:6px;color:#d9eef3;padding:9px 10px;font-size:11px;font-weight:750}
.preview-navigation button:hover{background:#205369}
.preview-navigation span{color:#8aafbf;font-size:11px;white-space:nowrap;font-weight:700}
.swipe-hint{display:none;color:#adc7d1;font-size:10px;margin:7px 0 0;text-align:center}
.help-overlay{position:fixed;inset:0;z-index:90;display:grid;place-items:center;padding:18px;background:#04121ecc;backdrop-filter:blur(5px)}
.help-sheet{width:min(480px,100%);max-height:calc(100dvh - 36px);overflow-y:auto;border:1px solid #d2e3ea;border-radius:14px;background:#f8fbfc;color:#173443;padding:25px;box-shadow:0 25px 80px #0008}
.help-title{display:flex;justify-content:space-between;gap:12px;align-items:flex-start}
.help-title .eyebrow{color:#3288a1}.help-title h2{font-size:24px;line-height:1.2;margin:7px 0 0;letter-spacing:-.03em}
.help-title button{border:1px solid #cbdce5;background:white;border-radius:7px;padding:8px 10px;color:#24495a}
.help-steps{list-style:none;counter-reset:st;margin:20px 0 24px;padding:0;display:grid;gap:0}
.help-steps li{counter-increment:st;border-top:1px solid #dbe5ea;display:grid;grid-template-columns:32px 1fr;gap:0 12px;padding:14px 0}
.help-steps li:before{content:counter(st,decimal-leading-zero);grid-row:span 2;color:#2e829a;font-weight:800;font-size:12px;padding-top:2px}
.help-steps b{font-size:13px}.help-steps span{display:block;font-size:12px;line-height:1.65;color:#526b79;margin-top:3px}
.help-done{width:100%;background:#0a4358;color:white;border:0;border-radius:7px;padding:13px 16px;font-weight:750}
@media(max-width:870px){.preview-panel{scroll-margin-top:12px}}
@media(max-width:630px){.grid-tools{justify-content:flex-start}.grid-tools select{flex:1;min-width:132px}.grid-tools button{flex:0 0 auto}.search-caption{align-items:center}.poster-card .card-open{padding:9px;font-size:11px}.preview-navigation button{flex:1}.swipe-hint{display:block}}
@media(max-width:390px){.grid-tools .muted-btn{flex:1}.grid-tools #staff-open{flex:1}}

/* v1.3: immersive conference presentation — preserves all other site sections. */
.viewer{width:100vw;height:100vh;height:100dvh;isolation:isolate;background:#020609;overscroll-behavior:contain}
.viewer-stage{inset:0;padding:0!important;display:flex;align-items:center;justify-content:center;overflow:hidden;background:#020609}
.viewer-stage img{display:block;object-fit:contain;object-position:center;max-width:100vw;max-height:100vh;max-height:100dvh;width:auto;height:auto;box-shadow:none;background:#fff}
.viewer-head,.viewer-bottom,.viewer-directory{transition:opacity .24s ease,transform .24s ease;z-index:2}
.viewer-head{background:linear-gradient(180deg,rgba(0,8,14,.88),rgba(0,8,14,0));padding:16px 25px 35px}
.viewer-bottom{background:linear-gradient(0deg,rgba(0,8,14,.90),rgba(0,8,14,0));padding:40px 25px 16px}
.viewer.controls-idle .viewer-head,
.viewer.controls-idle .viewer-bottom,
.viewer.controls-idle .viewer-directory{opacity:0;pointer-events:none}
.viewer.controls-idle .viewer-head{transform:translateY(-12px)}
.viewer.controls-idle .viewer-bottom{transform:translateY(12px)}
.viewer.controls-idle .viewer-directory{transform:translateY(-12px)}
/* When fullscreen is active, keep original staff panel accessible above poster. */
:fullscreen{background:#020609}
@media (max-width:630px){
 .viewer-stage{padding:0!important}
 .viewer-head{padding:12px 12px 24px}
 .viewer-bottom{padding:30px 12px 12px}
 .viewer-controls{display:flex;justify-content:center;flex-wrap:wrap}
 .viewer-controls button{min-width:0;padding:10px 12px;flex:1 1 auto}
 .viewer-controls button:last-child{grid-column:auto}
}
@media (prefers-reduced-motion:reduce){.viewer-head,.viewer-bottom,.viewer-directory{transition:none}}