/* EMA Modern 3D theme — loaded after the stable base stylesheet. */
:root{
 --ema-navy:#10052d;--ema-purple:#241052;--ema-gold:#ffdd17;
 --ema-surface:rgba(255,255,255,.94);--ema-border:rgba(35,16,82,.10);
 --ema-shadow:0 18px 45px rgba(22,7,60,.12),0 3px 10px rgba(22,7,60,.07);
 --ema-shadow-hover:0 24px 55px rgba(22,7,60,.18),0 8px 18px rgba(22,7,60,.10);
}
html{scroll-behavior:smooth}
body{font-family:Inter,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;letter-spacing:.005em;background:
 radial-gradient(circle at 88% 4%,rgba(255,221,23,.14),transparent 27rem),
 radial-gradient(circle at 22% 100%,rgba(77,44,145,.10),transparent 30rem),#f5f6fb}
header{height:76px;padding:10px 22px;background:linear-gradient(115deg,#10052d 0%,#281158 62%,#16073c 100%);box-shadow:0 10px 30px rgba(16,5,45,.22);border-bottom:1px solid rgba(255,255,255,.12)}
.brand{font-weight:800;letter-spacing:-.02em}.brand-logo{width:52px;height:52px;padding:3px;border:2px solid rgba(255,221,23,.8);box-shadow:0 7px 18px rgba(0,0,0,.25)}
.header-actions a{text-decoration:none}.icon-btn{display:inline-flex;align-items:center;gap:5px;padding:8px 11px;border-radius:12px;background:rgba(255,255,255,.08);transition:.2s ease}.icon-btn:hover{background:rgba(255,255,255,.16);transform:translateY(-1px)}
nav{top:76px;width:264px;padding:18px 14px;background:linear-gradient(180deg,#10052d,#1c0b43 68%,#12062e);box-shadow:12px 0 32px rgba(16,5,45,.12)}
.nav-title{padding:9px 12px 15px;color:#fff;font-size:.82rem;text-transform:uppercase;letter-spacing:.12em;opacity:.82}
.nav-user-profile{padding:12px;margin-bottom:9px;border-radius:16px;background:linear-gradient(135deg,rgba(255,255,255,.10),rgba(255,255,255,.04));border:1px solid rgba(255,255,255,.08)}
.nav-user-profile span,.nav-user-profile img{width:44px;height:44px;box-shadow:0 7px 15px rgba(0,0,0,.22)}
.nav-group{margin:4px 0}.nav-group summary{padding:11px 12px;border-radius:11px;font-weight:750;list-style:none;transition:.2s ease}.nav-group summary::-webkit-details-marker{display:none}.nav-group summary::before{content:'›';display:inline-block;margin-right:9px;transition:transform .2s}.nav-group[open] summary::before{transform:rotate(90deg)}.nav-group summary:hover{background:rgba(255,255,255,.07)}
.nav-links{padding:3px 0 6px 9px}.nav-links a{padding:9px 11px;margin:2px 0;border-left:2px solid transparent;color:rgba(255,255,255,.88);transition:.18s ease}.nav-links a span{display:inline-block;width:25px;color:var(--g)}.nav-links a:hover{background:linear-gradient(90deg,rgba(255,221,23,.18),rgba(255,255,255,.04));border-left-color:var(--g);transform:translateX(3px)}
main{padding:30px}main.logged{margin-left:264px}main>h1{margin:0 0 22px;color:#190b3d;font-size:clamp(1.65rem,3vw,2.25rem);letter-spacing:-.035em}
.card{border:1px solid var(--ema-border);border-radius:20px;padding:22px;background:var(--ema-surface);box-shadow:var(--ema-shadow);backdrop-filter:blur(10px);transition:transform .22s ease,box-shadow .22s ease}.card:hover{box-shadow:var(--ema-shadow-hover)}
.grid{gap:20px}.grid.stats .card{position:relative;overflow:hidden;min-height:122px;display:flex;flex-direction:column;justify-content:center;border-top:0}.grid.stats .card::before{content:"";position:absolute;inset:0 auto 0 0;width:5px;background:linear-gradient(var(--g),#f3b700)}.grid.stats .card::after{content:"";position:absolute;width:90px;height:90px;border-radius:50%;right:-28px;top:-30px;background:rgba(255,221,23,.13)}.stats .card b{font-size:1.85rem;letter-spacing:-.04em}.stats .card small{margin-top:4px;color:#686579;font-weight:650}
input,select,textarea{border:1px solid #d9d9e6;border-radius:12px;padding:12px 13px;background:#fbfbfe;box-shadow:inset 0 1px 2px rgba(16,5,45,.03);transition:border-color .18s,box-shadow .18s,background .18s}input:focus,select:focus,textarea:focus{outline:0;border-color:#6c4db5;background:#fff;box-shadow:0 0 0 4px rgba(84,54,148,.12)}
label{color:#373349;font-size:.92rem}label>span{display:block;margin-bottom:5px;font-size:.78rem;text-transform:uppercase;letter-spacing:.06em;color:#716d80}
.btn,button{min-height:44px;border-radius:12px;padding:10px 16px;font-weight:750;box-shadow:0 8px 18px rgba(22,7,60,.18);transition:transform .18s ease,box-shadow .18s ease,filter .18s ease}.btn:hover,button:hover{transform:translateY(-2px);box-shadow:0 12px 24px rgba(22,7,60,.24);filter:brightness(1.08)}.btn:active,button:active{transform:translateY(0)}.btn.secondary{background:#6b6877}.btn.danger{background:linear-gradient(135deg,#d91f2b,#a90f19)}
.toolbar{gap:14px}.table{border:1px solid var(--ema-border);border-radius:18px;box-shadow:var(--ema-shadow)}th{padding:14px 12px;background:linear-gradient(180deg,#f3f0fa,#ebe7f5);color:#2b1b50;font-size:.78rem;text-transform:uppercase;letter-spacing:.05em}td{padding:13px 12px}tbody tr{transition:background .15s}tbody tr:hover{background:#fbf9ff}.badge{font-weight:750;background:#eee8ff;border:1px solid #ded4fa}
.alert{border-radius:13px;padding:14px 16px;box-shadow:0 7px 16px rgba(22,7,60,.06)}
.student-filter-card{align-items:flex-end}.student-filters{display:grid!important;grid-template-columns:minmax(220px,2fr) minmax(150px,1fr) minmax(130px,.8fr) auto auto;align-items:end;gap:10px;flex:1}.student-filters label{margin:0}.student-filters .btn{margin-bottom:0}.add-student-btn{white-space:nowrap}.results-summary{margin:-5px 3px 12px;color:#6a6678}.results-summary b{color:var(--p)}
footer{font-size:.85rem;color:#777386}
@media(max-width:1000px){.student-filters{grid-template-columns:repeat(2,minmax(0,1fr))}.student-filters label:first-child{grid-column:1/-1}}
@media(max-width:800px){header{height:68px;padding:8px 12px}nav{top:68px;width:min(86vw,290px)}main.logged{padding:16px!important}.card{border-radius:16px;padding:16px!important}.student-filter-card{align-items:stretch}.student-filters{grid-template-columns:1fr!important;width:100%}.student-filters label:first-child{grid-column:auto}.student-filters .btn,.add-student-btn{width:100%}.grid.stats .card{min-height:105px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}