:root{--ink:#0a1f44;--ultra:#2347d6;--deep:#142a8f;--sky:#e6eefc;--paper:#f6f9ff;--gold:#d9a21b;--cyan:#27c4e8;--ok:#0f9d58;--bad:#d93a3a;--line:#d3def5;--mute:#51648f;--hh:67px}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;min-height:100vh;min-height:100dvh;font:500 16px/1.55 Figtree,system-ui,sans-serif;color:var(--ink);background:#9fc2ec}

/* Manipal University Jaipur campus as the page background */
body::before{content:"";position:fixed;inset:0;z-index:-2;background:url(/static/muj-campus.jpg) center 30%/cover no-repeat}
body::after{content:"";position:fixed;inset:0;z-index:-1;background:rgba(8,24,58,.18)}

h1,h2{font-family:"Bricolage Grotesque",system-ui,sans-serif;line-height:1.05;margin:0;letter-spacing:-.02em}
a{color:var(--ultra);font-weight:600}
header{display:flex;justify-content:space-between;align-items:center;gap:10px;height:var(--hh);padding:0 clamp(14px,4vw,40px);background:#fff;border-bottom:3px solid var(--gold);position:sticky;top:0;z-index:10}
header>a{display:flex;align-items:center;gap:10px;color:var(--ink);text-decoration:none;flex:none}
.brand h1{font-size:1.25rem;font-weight:800;line-height:1.05;white-space:nowrap}
.brand small{margin:0;font-size:.78rem;font-weight:700;color:#b87d00;line-height:1.2}
.logo{width:36px;height:36px;color:var(--ultra);flex:none}
.muj-logo{height:44px;width:auto;max-width:120px;object-fit:contain;flex:none}
header span{display:flex;align-items:center;gap:10px;font-weight:600;font-size:.95rem;min-width:0}header span a{flex:none;white-space:nowrap}
.who{font-weight:700;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;min-width:0}
main{max-width:1120px;margin:0 auto;padding:clamp(18px,3.5vw,40px) clamp(14px,4vw,40px) 64px}
:focus-visible{outline:3px solid var(--cyan);outline-offset:3px}

.btn,button{display:inline-block;font:700 1rem Figtree,sans-serif;background:var(--ultra);color:#fff;border:0;padding:12px 22px;border-radius:999px;cursor:pointer;text-decoration:none;margin:4px 6px 4px 0;transition:background .15s,transform .15s}
.btn:hover,button:hover{background:var(--deep)}
.btn:active,button:active{transform:scale(.97)}
button:disabled{opacity:.55;cursor:wait}
.ghost,button.alt,.alt-link{background:transparent;color:var(--ultra);box-shadow:inset 0 0 0 2px var(--ultra)}
.ghost:hover,button.alt:hover,.alt-link:hover{background:var(--sky)}
input,select{width:100%;font:500 1rem Figtree,sans-serif;padding:13px 16px;margin:6px 0;border:2px solid var(--line);border-radius:12px;background:#fff;color:var(--ink)}
select{appearance:none;-webkit-appearance:none;padding-right:42px;text-overflow:ellipsis;background:#fff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='9' fill='none' stroke='%232347d6' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M1.5 1.5 7 7l5.5-5.5'/%3E%3C/svg%3E") no-repeat right 16px center}
select:invalid,select:has(option[value=""]:checked){color:var(--mute)}
input:focus,select:focus{outline:0;border-color:var(--ultra);box-shadow:0 0 0 4px #2347d622}
small{display:block;color:var(--mute);margin-top:4px}
.lbl{display:block;font-weight:700;font-size:.9rem;margin:10px 0 0}
.links{margin:14px 0 0;display:flex;flex-wrap:wrap;gap:6px 18px}

/* home: fixed full-screen campus photo under a dark blue overlay (1600px file normally, 3840px file on wide screens).
   If the files in static/img are missing, the older campus photo shows instead. */
body.home::before{background-image:url(/static/img/campus-1600.jpg),url(/static/muj-campus.jpg);background-position:center;filter:none;transform:none}
@media(min-width:1600px){body.home::before{background-image:url(/static/img/campus-3840.jpg),url(/static/img/campus-1600.jpg),url(/static/muj-campus.jpg)}}
body.home::after{background:rgba(10,31,68,.72)}
.herocard{margin:clamp(8px,4vw,48px) 0 28px;color:#fff}
.kicker{margin:0 0 14px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;font-size:.85rem;color:#f2c14e}
.herocard h1{font-size:clamp(2.2rem,5.6vw,4.2rem);font-weight:800;max-width:17ch;color:#fff}
.lead{font-size:1.2rem;max-width:46ch;margin:16px 0 0;color:#dbe6ff}
.glass{background:#ffffff1a;border:1px solid #ffffff40;border-radius:28px;padding:clamp(20px,3vw,34px);color:#fff;backdrop-filter:blur(6px)}
.glass .steps li::before{background:#fff;color:var(--ultra)}

.roles{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:20px;margin-bottom:20px}
.role{padding:30px;border-radius:28px;background:#fff;border:2px solid var(--line)}
.role h2{font-size:1.9rem;margin-bottom:8px}.role p{margin:0 0 22px;max-width:34ch}
.role.student{background:var(--ultra);border-color:var(--ultra);color:#fff}
.role.student .btn{background:#fff;color:var(--deep)}.role.student .btn:hover{background:var(--sky)}
.role.student .ghost{background:transparent;color:#fff;box-shadow:inset 0 0 0 2px #fff}.role.student .ghost:hover{background:#ffffff26}

.steps{counter-reset:s;list-style:none;margin:0;padding:0;display:grid;gap:18px}
.steps li{counter-increment:s;display:grid;grid-template-columns:40px 1fr;gap:14px;align-items:start}
.steps li::before{content:counter(s);width:40px;height:40px;border-radius:50%;background:var(--sky);color:var(--ultra);display:grid;place-items:center;font:800 1.1rem "Bricolage Grotesque",sans-serif}
.steps b{display:block}
.flow{grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}

.duo{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:start}
.duo.even{margin-top:20px}
.panel{background:#fff;border:2px solid var(--line);border-radius:28px;padding:clamp(20px,3vw,34px)}
.panel.narrow{max-width:640px;margin:0 auto}
.panel h2{font-size:1.8rem;margin-bottom:6px}.sub{color:var(--mute);margin:0 0 18px}
.authbox{max-width:900px;margin:0 auto;display:grid;grid-template-columns:5fr 6fr;border-radius:32px;overflow:hidden;border:2px solid #fff;background:#fff}
.authside{background:var(--ultra);color:#fff;padding:36px;display:flex;flex-direction:column;justify-content:space-between;gap:28px}
.authside h2{font-size:2.4rem;margin-bottom:10px}.authside svg{width:84px;height:84px}.authform{padding:36px}

/* camera */
.scan{position:relative;border-radius:28px;overflow:hidden;background:var(--deep);aspect-ratio:4/3;box-shadow:0 0 0 6px #fff}
.scan video{width:100%;height:100%;object-fit:cover;transform:scaleX(-1);display:block}
.scan i{position:absolute;width:46px;height:46px;border:4px solid #fff;transition:border-color .2s}
.scan i:nth-of-type(1){top:16px;left:16px;border-right:0;border-bottom:0;border-radius:16px 0 0 0}
.scan i:nth-of-type(2){top:16px;right:16px;border-left:0;border-bottom:0;border-radius:0 16px 0 0}
.scan i:nth-of-type(3){bottom:16px;left:16px;border-right:0;border-top:0;border-radius:0 0 0 16px}
.scan i:nth-of-type(4){bottom:16px;right:16px;border-left:0;border-top:0;border-radius:0 0 16px 0}
.camchip{position:absolute;left:50%;bottom:14px;transform:translateX(-50%);max-width:calc(100% - 40px);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;background:#0a1f44cc;color:#fff;font-weight:700;font-size:.85rem;padding:4px 14px;border-radius:999px}
.sweep{position:absolute;left:8%;right:8%;top:10%;height:3px;border-radius:3px;background:var(--cyan);box-shadow:0 0 18px 5px #27c4e899;opacity:0}
.scanning i{border-color:var(--cyan)}
.scanning .sweep{opacity:1;animation:sweep 1.1s ease-in-out infinite alternate}
@keyframes sweep{to{top:88%}}

#status{display:inline-flex;align-items:center;font-weight:700;background:var(--sky);padding:7px 14px;border-radius:999px;margin:0 0 14px}
#status::before{content:"";width:9px;height:9px;border-radius:50%;background:#9aa9c9;margin-right:9px;flex:none}
#status[data-live="1"]::before{background:var(--ok);animation:pulse 1.6s infinite}
@keyframes pulse{50%{box-shadow:0 0 0 7px #0f9d5833}}
#msg{padding:11px 15px;border-radius:12px;font-weight:600;background:var(--sky);margin:14px 0 6px}
#msg:empty{display:none}
#msg.ok{background:#dff5e8;color:#0a6b3a}#msg.bad{background:#fde4e4;color:#a42424}
/* attendance page: the message floats at the bottom, so showing it never moves the camera or the form */
.toast #msg{position:fixed;left:12px;right:12px;bottom:max(12px,env(safe-area-inset-bottom));max-width:560px;margin:0 auto;z-index:30;box-shadow:0 10px 30px #0a1f4440}

table{width:100%;border-collapse:collapse;margin-top:10px}
th,td{padding:10px 8px;border-bottom:1px solid var(--line);text-align:left;vertical-align:middle}
th{font-size:.85rem;color:var(--mute);font-weight:600;white-space:nowrap}
.empty{text-align:center;color:var(--mute);padding:26px}
.tablewrap{overflow-x:auto;-webkit-overflow-scrolling:touch}
.chk{display:flex;gap:10px;align-items:center;font-weight:600;margin:12px 0}.chk input{width:auto;margin:0}

/* teacher dashboard */
.tnav{display:flex;gap:6px;overflow-x:auto;background:#fff;border:2px solid var(--line);border-radius:999px;padding:6px;margin-bottom:20px;scrollbar-width:none}
.tnav::-webkit-scrollbar{display:none}
.tnav a{flex:none;text-decoration:none;color:var(--ink);padding:9px 18px;border-radius:999px;font-weight:700}
.tnav a:hover{background:var(--sky)}
.tnav a[aria-current=page]{background:var(--ultra);color:#fff}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:14px;margin-bottom:20px}
.stats.small{margin:18px 0 0;grid-template-columns:repeat(auto-fit,minmax(130px,1fr))}
.stat{background:#fff;border:2px solid var(--line);border-radius:22px;padding:16px 20px}
.stats.small .stat{background:var(--paper)}
.stat b{display:block;font:800 clamp(2rem,5vw,2.8rem)/1.1 "Bricolage Grotesque",sans-serif;color:var(--ultra)}
.stat span{color:var(--mute);font-weight:600;font-size:.92rem}
.rowhead{display:flex;justify-content:space-between;align-items:flex-start;gap:14px;flex-wrap:wrap}
.rowhead h2{margin-bottom:6px}.rowhead #status{margin-bottom:10px}
.filters{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:0 12px;margin-bottom:6px}
.tag{display:inline-block;padding:1px 9px;border-radius:999px;font-size:.78rem;font-weight:700;margin-left:4px}
.tag.live{background:#dff5e8;color:#0a6b3a}.tag.done{background:var(--sky);color:var(--mute)}
.act{white-space:nowrap}.act a{margin-right:10px}
.pct{display:flex;align-items:center;gap:8px;white-space:nowrap}
.bar{display:block;width:90px;height:8px;border-radius:8px;background:var(--sky);overflow:hidden}
.bar i{display:block;height:100%;background:var(--ok)}
.pct.low{color:var(--bad)}.pct.low .bar i{background:var(--bad)}

@media(max-width:860px){
  /* single column: block layout (not grid) so the camera can stay pinned while the form scrolls under it */
  .duo{display:block}.duo>*+*{margin-top:18px}
  .camcol{position:sticky;top:var(--hh);z-index:6;background:#ffffffee;padding:10px;margin:-8px -6px 0;border-radius:0 0 26px 26px;box-shadow:0 10px 24px #0a1f4433}
  .camcol .scan{aspect-ratio:auto;height:30vh;height:min(30dvh,250px);min-height:150px;border-radius:18px;box-shadow:none}
  .scan i{width:30px;height:30px;border-width:3px}
  .scan i:nth-of-type(n){top:auto;right:auto;bottom:auto;left:auto}
  .scan i:nth-of-type(1){top:10px;left:10px}.scan i:nth-of-type(2){top:10px;right:10px}
  .scan i:nth-of-type(3){bottom:10px;left:10px}.scan i:nth-of-type(4){bottom:10px;right:10px}
  .duo.even{margin-top:18px}
}
@media(max-width:700px){.authbox{grid-template-columns:1fr}.authside{padding:26px}.authside h2{font-size:1.9rem}.authside svg{width:56px;height:56px}.authform{padding:24px}}
@media(max-width:560px){.brand small{display:none}.brand h1{font-size:1.05rem}.logo{width:30px;height:30px}.role{padding:22px}.btn,button{padding:12px 18px}}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}

/* header: Manipal logo left, TriCheck logo centred */
header{display:grid;grid-template-columns:minmax(0,1fr) auto minmax(0,1fr)}
header .hl{justify-self:start}header .hc{justify-self:center}header span{justify-self:end}
.mujl{height:46px;width:auto;display:block}.tri-logo{height:40px;width:auto;display:block}
@media(max-width:560px){.mujl{height:27px}.tri-logo{height:26px}header .who{display:none}}
/* tinted glass role cards: blue for students, cyan for teachers */
.role{color:#fff;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.4);backdrop-filter:blur(14px) saturate(150%);-webkit-backdrop-filter:blur(14px) saturate(150%)}
.role.student{background:rgba(35,71,214,.5);border-color:rgba(255,255,255,.4)}
.role.teacher{background:rgba(39,196,232,.26)}
.role .btn{background:#fff;color:var(--deep)}.role .btn:hover{background:var(--sky)}
.role .ghost{background:transparent;color:#fff;box-shadow:inset 0 0 0 2px #fff}.role .ghost:hover{background:#ffffff26}