:root{
  --g:#10251c;--g2:#1b3a2d;--g3:#26503c;--gold:#b8923a;--gold2:#d4b266;
  --cream:#f7f1e5;--cream2:#efe6d2;--card:#fffdf8;--line:#e3d8bd;
  --ink:#1f2d26;--mut:#5d6b63;--red:#b3261e;--ok:#2e7d32;
  --serif:'Cormorant Garamond',Georgia,serif;--sans:'Inter',system-ui,-apple-system,'Segoe UI',Arial,sans-serif;
}
*{box-sizing:border-box}
html,body{margin:0}
body{font-family:var(--sans);background:var(--cream);color:var(--ink);font-size:15px;line-height:1.45;-webkit-font-smoothing:antialiased}
h1,h2,h3{font-family:var(--serif);color:var(--g);margin:0;font-weight:700}
a{color:var(--g3)}
button{font-family:inherit}
.hidden{display:none!important}

/* inputs */
label{display:block;font-size:12px;color:var(--mut);margin:14px 0 5px;font-weight:600;letter-spacing:.2px}
input,select,textarea{width:100%;padding:11px 12px;border:1px solid #d9cba3;border-radius:9px;font-size:16px;background:#fff;color:var(--ink);font-family:inherit}
input:focus,select:focus,textarea:focus{outline:2px solid var(--gold);border-color:var(--gold)}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;border:0;border-radius:9px;background:var(--g);color:#fff;font-size:14px;font-weight:700;padding:11px 18px;cursor:pointer;text-decoration:none}
.btn:hover{background:var(--g2)}
.btn:disabled{opacity:.55;cursor:default}
.btn.gold{background:var(--gold);color:var(--g)}
.btn.gold:hover{background:var(--gold2)}
.btn.ghost{background:transparent;color:var(--g);border:1px solid var(--line)}
.btn.ghost:hover{background:var(--cream2)}
.btn.danger{background:var(--red)}
.btn.sm{padding:6px 11px;font-size:12px;border-radius:7px}
.btn.block{width:100%;padding:14px;font-size:16px;margin-top:20px}
.toast{position:fixed;left:16px;right:16px;bottom:20px;max-width:560px;margin:auto;padding:14px 16px;border-radius:10px;color:#fff;font-size:14px;z-index:99;display:none;box-shadow:0 6px 24px rgba(0,0,0,.25)}
.toast.ok{background:var(--ok)}.toast.err{background:var(--red)}
.empty{color:var(--mut);font-size:14px;padding:22px 4px;text-align:center}
.spin{text-align:center;color:var(--mut);padding:50px 0}

/* cards + badges */
.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:18px}
.badge{display:inline-block;font-size:11px;font-weight:700;padding:3px 9px;border-radius:20px;white-space:nowrap}
.badge.active{background:#e2f0d9;color:var(--ok)}
.badge.paused{background:#fff2cc;color:#9c5700}
.badge.batch{background:var(--cream2);color:var(--g2)}
.badge.video{background:#e7edf9;color:#1f4e79}
.badge.pdf{background:#fde8e6;color:var(--red)}

/* modal */
.modal-bg{position:fixed;inset:0;background:rgba(16,37,28,.6);display:flex;align-items:flex-start;justify-content:center;padding:24px 14px;overflow:auto;z-index:50}
.modal{background:var(--card);border-radius:16px;width:100%;max-width:520px;padding:22px;margin:auto}
.modal h3{font-size:24px;margin-bottom:4px}
.modal .actions{display:flex;gap:10px;justify-content:flex-end;margin-top:20px;flex-wrap:wrap}
.cred{background:var(--cream2);border-radius:12px;padding:14px;margin-top:14px;font-size:15px}
.cred b{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:18px;color:var(--g)}
.cred div{padding:3px 0}

/* ========= STUDENT SITE ========= */
.login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:20px;
  background:radial-gradient(circle at 20% 10%,#1f4a37 0,var(--g) 55%)}
.login{background:var(--card);border-radius:18px;max-width:400px;width:100%;padding:32px 26px;box-shadow:0 20px 60px rgba(0,0,0,.35)}
.brand{text-align:center;margin-bottom:6px}
.brand .lotus{font-size:30px;color:var(--gold)}
.brand h1{font-size:36px;letter-spacing:1px}
.brand p{margin:2px 0 0;color:var(--gold);font-size:11px;letter-spacing:3px;text-transform:uppercase;font-weight:700}
.login .sub{text-align:center;color:var(--mut);font-size:14px;margin:14px 0 4px}
.login .err{background:#fde8e6;color:var(--red);padding:10px 12px;border-radius:8px;font-size:13px;margin-top:14px}
.login .foot{text-align:center;color:var(--mut);font-size:12px;margin-top:22px}
.login .alt{text-align:center;margin-top:10px;font-size:13px}

.s-top{background:var(--g);color:#fff;padding:14px 18px;display:flex;align-items:center;justify-content:space-between;position:sticky;top:0;z-index:10}
.s-top .t{font-family:var(--serif);font-size:24px;font-weight:700;letter-spacing:1px}
.s-top .t small{display:block;font-family:var(--sans);font-size:10px;color:var(--gold);letter-spacing:2.5px;font-weight:700;margin-top:-2px}
.s-top button{background:transparent;border:1px solid #3b5a4b;color:#d9e3dd;border-radius:20px;padding:7px 14px;font-size:12px;cursor:pointer}
.s-main{max-width:920px;margin:0 auto;padding:20px 16px 40px}
.hello{margin:6px 0 18px}
.hello h2{font-size:32px}
.hello p{color:var(--mut);margin:4px 0 0}
.tabs{display:flex;gap:8px;margin-bottom:16px;flex-wrap:wrap}
.tabs button{border:1px solid var(--line);background:var(--card);color:var(--g);padding:9px 18px;border-radius:22px;font-size:14px;font-weight:600;cursor:pointer}
.tabs button.on{background:var(--g);color:#fff;border-color:var(--g)}
.vgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:16px}
.vcard{background:var(--card);border:1px solid var(--line);border-radius:14px;overflow:hidden;cursor:pointer;transition:transform .15s,box-shadow .15s}
.vcard:hover{transform:translateY(-2px);box-shadow:0 8px 22px rgba(16,37,28,.15)}
.thumb{position:relative;aspect-ratio:16/9;background:var(--g) center/cover no-repeat}
.thumb:after{content:'';position:absolute;inset:0;background:linear-gradient(transparent 50%,rgba(16,37,28,.55))}
.play{position:absolute;left:50%;top:50%;width:52px;height:52px;margin:-26px 0 0 -26px;border-radius:50%;background:rgba(184,146,58,.95);display:flex;align-items:center;justify-content:center;z-index:2}
.play:before{content:'';border-left:16px solid var(--g);border-top:10px solid transparent;border-bottom:10px solid transparent;margin-left:4px}
.vcard .meta{padding:12px 14px}
.vcard .meta b{display:block;color:var(--g);font-size:15px}
.vcard .meta small{color:var(--mut)}
.plist .item{display:flex;align-items:center;justify-content:space-between;gap:12px;background:var(--card);border:1px solid var(--line);border-radius:12px;padding:14px 16px;margin-bottom:10px}
.plist .item b{display:block;color:var(--g)}
.plist .item small{color:var(--mut)}
.player-bg{position:fixed;inset:0;background:rgba(10,24,18,.92);z-index:60;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:16px}
.player{width:100%;max-width:900px}
.player .frame{position:relative;aspect-ratio:16/9;background:#000;border-radius:10px;overflow:hidden}
.player iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.player h3{color:#fff;font-size:24px;margin:14px 0 2px}
.player p{color:#b9c9c0;margin:0;font-size:14px}
.player .close{align-self:flex-end;margin-bottom:10px;background:transparent;border:1px solid #577;color:#fff;border-radius:20px;padding:6px 14px;cursor:pointer}
.s-foot{text-align:center;color:var(--mut);font-size:12px;padding:10px 0 30px}

/* ========= ADMIN ========= */
.a-shell{display:grid;grid-template-columns:240px 1fr;min-height:100vh}
.a-side{background:var(--g);color:#d9e3dd;padding:20px 14px;position:sticky;top:0;height:100vh;display:flex;flex-direction:column}
.a-logo{padding:4px 10px 22px}
.a-logo b{font-family:var(--serif);font-size:28px;color:#fff;letter-spacing:1px;display:block}
.a-logo small{font-size:10px;color:var(--gold);letter-spacing:2.5px;font-weight:700}
.a-side nav{display:flex;flex-direction:column;gap:4px}
.a-side nav button{display:flex;align-items:center;gap:12px;text-align:left;background:transparent;border:0;color:#cfdcd5;padding:12px 14px;border-radius:10px;font-size:15px;cursor:pointer}
.a-side nav button:hover{background:var(--g2)}
.a-side nav button.on{background:var(--g3);color:#fff;font-weight:700;box-shadow:inset 3px 0 0 var(--gold)}
.a-side .who{margin-top:auto;padding:12px 10px 0;border-top:1px solid #2c4a3b;font-size:12px;color:#9fb3a8;word-break:break-all}
.a-side .who button{margin-top:8px;background:transparent;border:1px solid #3b5a4b;color:#d9e3dd;border-radius:8px;padding:7px 12px;cursor:pointer;font-size:12px}
.a-main{padding:26px 28px 50px;min-width:0}
.a-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:20px;flex-wrap:wrap}
.a-head h2{font-size:34px}
.a-head p{margin:2px 0 0;color:var(--mut)}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:14px;margin-bottom:20px}
.stat{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:16px}
.stat small{display:block;color:var(--mut);font-size:11px;letter-spacing:1px;text-transform:uppercase;font-weight:700}
.stat b{display:block;font-family:var(--serif);font-size:38px;color:var(--g);margin-top:4px;line-height:1}
.stat i{font-style:normal;font-size:12px;color:var(--mut)}
.two{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.card h3{font-size:22px;margin-bottom:10px}
.li{display:flex;justify-content:space-between;align-items:center;gap:10px;padding:10px 0;border-bottom:1px solid #eee3c8}
.li:last-child{border:0}
.li small{color:var(--mut);display:block}
.tbl-wrap{overflow-x:auto;background:var(--card);border:1px solid var(--line);border-radius:14px}
table{width:100%;border-collapse:collapse;font-size:14px}
th{background:var(--g);color:#fff;text-align:left;padding:11px 14px;font-size:12px;letter-spacing:.6px;text-transform:uppercase;white-space:nowrap}
td{padding:11px 14px;border-bottom:1px solid #eee3c8;vertical-align:middle}
tr:last-child td{border:0}
td .acts{display:flex;gap:6px;flex-wrap:wrap}
.search{max-width:280px}
.toolbar{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.mono{font-family:ui-monospace,Menlo,Consolas,monospace;font-weight:700;color:var(--g)}
.a-burger{display:none}

@media(max-width:860px){
  .a-shell{grid-template-columns:1fr}
  .a-side{position:static;height:auto;padding:12px}
  .a-logo{padding:2px 6px 10px}
  .a-side nav{flex-direction:row;overflow-x:auto}
  .a-side nav button{padding:9px 14px;white-space:nowrap;font-size:14px}
  .a-side .who{display:none}
  .a-main{padding:18px 14px 40px}
  .two{grid-template-columns:1fr}
  .a-head h2{font-size:28px}
}
@media(max-width:520px){.row2{grid-template-columns:1fr}}
.a-head>div:first-child{flex:1 1 280px}
.a-head .toolbar{flex-wrap:nowrap}
@media(max-width:520px){.a-head .toolbar{flex-wrap:wrap}}