:root{
  --bg:#f5f3ee; --surface:#ffffff; --surface-2:#faf8f4; --line:#e6e1d6; --line-2:#d8d1c2;
  --ink:#1d2433; --ink-2:#4a5262; --ink-3:#7b8291;
  --brand:#0f4c5c; --brand-2:#13627a; --brand-soft:#e3eff1; --brand-ink:#0b3944;
  --accent:#e09a2c; --accent-soft:#fcf0dc;
  --ok:#2f7d4f; --ok-soft:#e3f2e8; --warn:#b46b0e; --warn-soft:#fdf0dd; --bad:#b4363a; --bad-soft:#fbe6e6;
  --radius:12px; --radius-sm:8px; --shadow:0 1px 2px rgba(29,36,51,.06),0 4px 16px rgba(29,36,51,.05);
  --sidebar:248px;
  font-family:"Plus Jakarta Sans",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*{box-sizing:border-box}
html,body{margin:0;background:var(--bg);color:var(--ink);font-size:15px;line-height:1.55;-webkit-font-smoothing:antialiased}
a{color:var(--brand-2);text-decoration:none} a:hover{text-decoration:underline}
h1,h2,h3,h4{margin:0 0 .5rem;line-height:1.25;letter-spacing:-.01em}
h1{font-size:1.6rem} h2{font-size:1.25rem} h3{font-size:1.05rem}
p{margin:.3rem 0 .7rem}
img{max-width:100%}
.muted{color:var(--ink-3)} .small{font-size:.85rem} .tiny{font-size:.76rem}
.hidden{display:none!important}

/* ---------- layout ---------- */
.app{display:flex;min-height:100vh}
.sidebar{width:var(--sidebar);background:var(--brand-ink);color:#d9e6e9;position:fixed;inset:0 auto 0 0;display:flex;flex-direction:column;z-index:40;transition:transform .2s}
.brand{padding:20px 18px 16px;border-bottom:1px solid rgba(255,255,255,.08)}
.brand .logo{display:flex;gap:10px;align-items:center}
.brand .mark{width:38px;height:38px;border-radius:10px;background:var(--accent);color:var(--brand-ink);display:grid;place-items:center;font-weight:800;font-size:1rem}
.brand b{display:block;color:#fff;font-size:1rem;line-height:1.2}
.brand span{font-size:.75rem;opacity:.7}
.nav{padding:12px 10px;display:flex;flex-direction:column;gap:2px;flex:1;overflow:auto}
.nav a{display:flex;align-items:center;gap:11px;padding:10px 12px;border-radius:9px;color:#c9d9dd;font-weight:500;font-size:.93rem}
.nav a:hover{background:rgba(255,255,255,.06);text-decoration:none;color:#fff}
.nav a.active{background:rgba(255,255,255,.12);color:#fff}
.nav a svg{width:19px;height:19px;flex:none;opacity:.9}
.nav .badge{margin-left:auto}
.side-user{padding:14px;border-top:1px solid rgba(255,255,255,.08);display:flex;gap:10px;align-items:center}
.side-user .nm{font-size:.85rem;color:#fff;font-weight:600;line-height:1.2}
.side-user .rl{font-size:.72rem;opacity:.65}
.side-user button{margin-left:auto;background:none;border:0;color:#c9d9dd;cursor:pointer;padding:6px;border-radius:6px}
.side-user button:hover{background:rgba(255,255,255,.08)}
.main{flex:1;margin-left:var(--sidebar);min-width:0}
.topbar{display:none;position:sticky;top:0;z-index:30;background:var(--brand-ink);color:#fff;padding:10px 16px;align-items:center;gap:12px}
.topbar button{background:none;border:0;color:#fff;padding:4px;cursor:pointer}
.content{max-width:1180px;margin:0 auto;padding:28px 28px 60px}
.scrim{display:none}
@media (max-width:900px){
  .sidebar{transform:translateX(-100%)} .sidebar.open{transform:none}
  .main{margin-left:0} .topbar{display:flex}
  .content{padding:18px 16px 60px}
  .scrim.show{display:block;position:fixed;inset:0;background:rgba(0,0,0,.35);z-index:35}
}

/* ---------- komponen ---------- */
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
.card-pad{padding:18px 20px}
.grid{display:grid;gap:16px}
.g2{grid-template-columns:repeat(2,minmax(0,1fr))} .g3{grid-template-columns:repeat(3,minmax(0,1fr))} .g4{grid-template-columns:repeat(4,minmax(0,1fr))}
@media (max-width:900px){.g3,.g4{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:600px){.g2,.g3,.g4{grid-template-columns:1fr}}
.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.spread{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap}
.stack>*+*{margin-top:12px}
.page-head{display:flex;justify-content:space-between;align-items:flex-end;gap:16px;flex-wrap:wrap;margin-bottom:20px}
.page-head .crumb{font-size:.82rem;color:var(--ink-3);margin-bottom:4px}
.page-head .crumb a{color:var(--ink-3)}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:7px;padding:9px 15px;border-radius:9px;border:1px solid var(--line-2);background:var(--surface);color:var(--ink);font:inherit;font-weight:600;font-size:.88rem;cursor:pointer;white-space:nowrap;text-decoration:none!important;line-height:1.2}
.btn:hover{background:var(--surface-2)}
.btn:disabled{opacity:.55;cursor:not-allowed}
.btn.primary{background:var(--brand);border-color:var(--brand);color:#fff} .btn.primary:hover{background:var(--brand-2)}
.btn.accent{background:var(--accent);border-color:var(--accent);color:#2b1d05}
.btn.danger{color:var(--bad);border-color:#ecc6c6} .btn.danger:hover{background:var(--bad-soft)}
.btn.ghost{border-color:transparent;background:transparent} .btn.ghost:hover{background:rgba(0,0,0,.04)}
.btn.sm{padding:6px 10px;font-size:.8rem;border-radius:7px}
.btn.icon{padding:6px;width:32px;height:32px}
.btn svg{width:16px;height:16px}

.badge{display:inline-flex;align-items:center;gap:4px;padding:2px 9px;border-radius:999px;font-size:.73rem;font-weight:700;background:var(--brand-soft);color:var(--brand);white-space:nowrap}
.badge.ok{background:var(--ok-soft);color:var(--ok)} .badge.warn{background:var(--warn-soft);color:var(--warn)} .badge.bad{background:var(--bad-soft);color:var(--bad)}
.badge.gray{background:#eeebe4;color:var(--ink-2)} .badge.accent{background:var(--accent);color:#2b1d05}
.badge.count{background:var(--accent);color:#2b1d05;min-width:20px;justify-content:center;padding:1px 6px}

label.f{display:block;font-size:.82rem;font-weight:600;color:var(--ink-2);margin-bottom:5px}
.input,select.input,textarea.input{width:100%;padding:10px 12px;border:1px solid var(--line-2);border-radius:9px;background:#fff;font:inherit;color:var(--ink);font-size:.93rem}
textarea.input{min-height:90px;resize:vertical}
.input:focus{outline:2px solid rgba(19,98,122,.25);border-color:var(--brand-2)}
.field{margin-bottom:14px}
.hint{font-size:.78rem;color:var(--ink-3);margin-top:4px}
.check{display:flex;gap:8px;align-items:center;font-size:.9rem;cursor:pointer}
.check input{width:17px;height:17px;accent-color:var(--brand)}

.alert{padding:11px 14px;border-radius:9px;font-size:.88rem;border:1px solid}
.alert.info{background:var(--brand-soft);border-color:#c5dde2;color:var(--brand-ink)}
.alert.warn{background:var(--warn-soft);border-color:#f2d6ae;color:#7a4a0b}
.alert.bad{background:var(--bad-soft);border-color:#efc4c4;color:#7c2225}
.alert.ok{background:var(--ok-soft);border-color:#c3e3cf;color:#1f5a37}

.table-wrap{overflow:auto;border:1px solid var(--line);border-radius:var(--radius);background:#fff}
table.t{border-collapse:collapse;width:100%;font-size:.88rem}
table.t th,table.t td{padding:10px 12px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
table.t th{background:var(--surface-2);font-size:.76rem;text-transform:uppercase;letter-spacing:.04em;color:var(--ink-2);position:sticky;top:0;z-index:1}
table.t tr:last-child td{border-bottom:0}
table.t td.num,table.t th.num{text-align:center}
table.t tbody tr:hover{background:#fcfbf8}

.tabs{display:flex;gap:4px;border-bottom:1px solid var(--line);margin-bottom:20px;overflow-x:auto}
.tabs a{padding:10px 14px;font-weight:600;font-size:.9rem;color:var(--ink-2);border-bottom:2px solid transparent;margin-bottom:-1px;white-space:nowrap}
.tabs a:hover{text-decoration:none;color:var(--ink)}
.tabs a.active{color:var(--brand);border-color:var(--brand)}

.empty{padding:36px 20px;text-align:center;color:var(--ink-3)}
.empty svg{width:40px;height:40px;opacity:.5;margin-bottom:6px}
.spinner{width:28px;height:28px;border:3px solid var(--line);border-top-color:var(--brand);border-radius:50%;animation:spin .8s linear infinite;margin:40px auto}
@keyframes spin{to{transform:rotate(360deg)}}

.stat{padding:16px 18px}
.stat .v{font-size:1.7rem;font-weight:800;color:var(--brand-ink)}
.stat .l{font-size:.8rem;color:var(--ink-3);font-weight:600}

.avatar{width:36px;height:36px;border-radius:50%;background:var(--accent-soft);color:var(--warn);display:grid;place-items:center;font-weight:700;font-size:.85rem;flex:none;overflow:hidden}
.avatar img{width:100%;height:100%;object-fit:cover}
.avatar.lg{width:84px;height:84px;font-size:1.6rem}

/* ---------- kartu mata kuliah ---------- */
.course-card{overflow:hidden;display:flex;flex-direction:column;color:inherit;text-decoration:none!important;transition:transform .15s,box-shadow .15s}
.course-card:hover{transform:translateY(-2px);box-shadow:0 8px 28px rgba(29,36,51,.09)}
.course-cover{height:112px;background:linear-gradient(135deg,var(--brand),var(--brand-2));position:relative;background-size:cover;background-position:center}
.course-cover .kode{position:absolute;left:14px;bottom:12px;background:rgba(255,255,255,.92);color:var(--brand-ink);font-weight:800;font-size:.75rem;padding:3px 9px;border-radius:6px}
.course-card .body{padding:14px 16px 16px;flex:1;display:flex;flex-direction:column;gap:6px}
.course-card h3{margin:0;font-size:1rem}
.progress{height:6px;background:#ece8df;border-radius:9px;overflow:hidden}
.progress>i{display:block;height:100%;background:var(--accent);border-radius:9px}

/* ---------- halaman MK (ala Moodle) ---------- */
.course-hero{padding:22px 24px;border-radius:var(--radius);background:linear-gradient(135deg,var(--brand-ink),var(--brand-2));color:#fff;margin-bottom:18px;position:relative;overflow:hidden;background-size:cover;background-position:center}
.course-hero::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(11,57,68,.94),rgba(11,57,68,.55))}
.course-hero>*{position:relative;z-index:1}
.course-hero .meta{font-size:.82rem;opacity:.85}
.course-hero h1{color:#fff;margin:.3rem 0}
.section{margin-bottom:14px}
.section-head{display:flex;gap:12px;align-items:center;padding:14px 18px;cursor:pointer;user-select:none}
.section-head .num{width:34px;height:34px;border-radius:9px;background:var(--brand-soft);color:var(--brand);display:grid;place-items:center;font-weight:800;font-size:.85rem;flex:none}
.section-head h3{margin:0;flex:1}
.section-head .chev{transition:transform .2s;color:var(--ink-3)}
.section.collapsed .chev{transform:rotate(-90deg)}
.section.collapsed .section-body{display:none}
.section-body{border-top:1px solid var(--line);padding:6px 10px 12px}
.section-summary{padding:8px 10px 4px;color:var(--ink-2);font-size:.92rem}
.activity{display:flex;align-items:center;gap:12px;padding:10px 10px;border-radius:9px;color:inherit;text-decoration:none!important}
.activity:hover{background:var(--surface-2)}
.activity .ic{width:38px;height:38px;border-radius:9px;display:grid;place-items:center;flex:none}
.activity .ic svg{width:20px;height:20px}
.activity .tt{flex:1;min-width:0}
.activity .tt b{display:block;font-weight:600;font-size:.94rem;color:var(--ink)}
.activity .tt span{font-size:.78rem;color:var(--ink-3)}
.activity .done{color:var(--ok)}
.activity.is-hidden{opacity:.5}
.ic-pdf{background:#fbe6e6;color:#b4363a} .ic-ppt{background:#fdecdc;color:#c45a12} .ic-video{background:#e7e5fb;color:#4b3fb5}
.ic-link{background:#e3eff1;color:#13627a} .ic-embed{background:#e9f2e3;color:#3d7a26} .ic-h5p{background:#e3f0fb;color:#1e63a8}
.ic-teks{background:#eeebe4;color:#4a5262} .ic-kuis{background:#fcf0dc;color:#a76a0a} .ic-tugas{background:#f3e5f5;color:#7b2f8a}
.edit-tools{display:flex;gap:2px;flex:none}
.add-row{display:flex;gap:6px;flex-wrap:wrap;padding:8px 10px 2px}

/* ---------- viewer ---------- */
.viewer-wrap{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:18px}
@media (max-width:1050px){.viewer-wrap{grid-template-columns:1fr}}
.viewer{background:#111;border-radius:var(--radius);overflow:hidden;position:relative}
.viewer iframe,.viewer video{display:block;width:100%;border:0;background:#fff}
.viewer .ratio{position:relative;width:100%;padding-top:56.25%} .viewer .ratio>*{position:absolute;inset:0;width:100%;height:100%}
.viewer.doc iframe{height:78vh;min-height:520px}
.viewer.frame iframe{height:78vh;min-height:480px}
.viewer.auto{background:#fff;border:1px solid var(--line)}
.viewer.auto iframe{min-height:420px}
.viewer-bar{display:flex;gap:8px;align-items:center;justify-content:space-between;flex-wrap:wrap;margin:12px 0}
.toc a{display:flex;gap:8px;align-items:flex-start;padding:7px 10px;border-radius:7px;color:var(--ink-2);font-size:.85rem;line-height:1.35}
.toc a:hover{background:var(--surface-2);text-decoration:none}
.toc a.active{background:var(--brand-soft);color:var(--brand);font-weight:600}
.toc .sec{font-size:.73rem;font-weight:800;text-transform:uppercase;letter-spacing:.05em;color:var(--ink-3);padding:12px 10px 4px}
.toc svg{width:15px;height:15px;flex:none;margin-top:2px}
.prose{font-size:.96rem;line-height:1.7}
.prose h1,.prose h2,.prose h3{margin-top:1.1em}
.prose table{border-collapse:collapse;width:100%;margin:.8em 0;font-size:.9rem}
.prose th,.prose td{border:1px solid var(--line-2);padding:7px 10px;text-align:left;vertical-align:top}
.prose th{background:var(--surface-2)}
.prose blockquote{margin:.8em 0;padding:.5em 1em;border-left:4px solid var(--accent);background:var(--accent-soft);border-radius:0 8px 8px 0}
.prose img{border-radius:8px}

/* ---------- kuis ---------- */
.quiz-layout{display:grid;grid-template-columns:minmax(0,1fr) 250px;gap:18px;align-items:start}
@media (max-width:900px){.quiz-layout{grid-template-columns:1fr}.quiz-side{order:-1}}
.quiz-side{position:sticky;top:16px}
.timer{font-size:1.6rem;font-weight:800;font-variant-numeric:tabular-nums;color:var(--brand-ink)}
.timer.low{color:var(--bad)}
.qnav{display:grid;grid-template-columns:repeat(6,1fr);gap:6px;margin-top:12px}
.qnav a{display:grid;place-items:center;height:34px;border-radius:7px;border:1px solid var(--line-2);font-weight:700;font-size:.82rem;color:var(--ink-2);text-decoration:none}
.qnav a.ans{background:var(--brand);border-color:var(--brand);color:#fff}
.q{padding:20px 22px;margin-bottom:14px;scroll-margin-top:70px}
.q .qh{display:flex;justify-content:space-between;gap:10px;margin-bottom:10px;font-size:.82rem;color:var(--ink-3);font-weight:600}
.q .qtext{font-size:1rem;margin-bottom:14px}
.q .qimg{max-height:360px;border-radius:8px;margin-bottom:12px;border:1px solid var(--line)}
.opt{display:flex;gap:12px;align-items:flex-start;padding:11px 14px;border:1px solid var(--line-2);border-radius:10px;margin-bottom:8px;cursor:pointer;background:#fff}
.opt:hover{border-color:var(--brand-2)}
.opt input{margin-top:3px;width:17px;height:17px;accent-color:var(--brand);flex:none}
.opt.sel{border-color:var(--brand);background:var(--brand-soft)}
.opt.right{border-color:var(--ok);background:var(--ok-soft)} .opt.wrong{border-color:var(--bad);background:var(--bad-soft)}
.opt .lt{font-weight:800;color:var(--ink-3);width:18px;flex:none}
.match{display:grid;grid-template-columns:minmax(0,1fr) 28px minmax(0,1fr);gap:8px;align-items:center;margin-bottom:8px}
.match .l{padding:10px 12px;background:var(--surface-2);border:1px solid var(--line);border-radius:9px;font-weight:500}
.match .arr{text-align:center;color:var(--ink-3)}
@media (max-width:600px){.match{grid-template-columns:1fr}.match .arr{display:none}}
.review-tag{font-size:.8rem;font-weight:700}
.q-edit{display:flex;gap:14px;align-items:flex-start;padding:14px 16px;border-bottom:1px solid var(--line)}
.q-edit:last-child{border-bottom:0}
.q-edit .n{width:28px;height:28px;border-radius:7px;background:var(--surface-2);border:1px solid var(--line);display:grid;place-items:center;font-weight:700;font-size:.8rem;flex:none}
.opt-row{display:flex;gap:8px;align-items:center;margin-bottom:7px}
.opt-row .input{flex:1}
.score-big{font-size:3rem;font-weight:800;color:var(--brand-ink);line-height:1}

/* ---------- chat ---------- */
.chat{display:grid;grid-template-columns:300px minmax(0,1fr);height:calc(100vh - 150px);min-height:480px;overflow:hidden}
@media (max-width:800px){.chat{grid-template-columns:1fr}.chat.in-thread .threads{display:none}.chat:not(.in-thread) .conv{display:none}}
.threads{border-right:1px solid var(--line);overflow:auto}
.thread{display:flex;gap:10px;padding:12px 14px;border-bottom:1px solid var(--line);color:inherit;text-decoration:none!important;align-items:center}
.thread:hover{background:var(--surface-2)} .thread.active{background:var(--brand-soft)}
.thread .tx{flex:1;min-width:0}
.thread .tx b{display:block;font-size:.88rem}
.thread .tx span{display:block;font-size:.78rem;color:var(--ink-3);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.conv{display:flex;flex-direction:column;min-height:0}
.conv-head{padding:12px 16px;border-bottom:1px solid var(--line);display:flex;gap:10px;align-items:center}
.msgs{flex:1;overflow:auto;padding:16px;display:flex;flex-direction:column;gap:8px;background:var(--surface-2)}
.msg{max-width:76%;padding:9px 13px;border-radius:14px;font-size:.92rem;white-space:pre-wrap;word-wrap:break-word;background:#fff;border:1px solid var(--line);align-self:flex-start}
.msg.me{align-self:flex-end;background:var(--brand);color:#fff;border-color:var(--brand)}
.msg .w{display:block;font-size:.68rem;opacity:.65;margin-top:3px;text-align:right}
.msg a{color:inherit;text-decoration:underline}
.composer{display:flex;gap:8px;padding:12px;border-top:1px solid var(--line);background:#fff}
.composer textarea{flex:1;min-height:44px;max-height:140px;resize:none}

/* ---------- modal & toast ---------- */
.modal-bg{position:fixed;inset:0;background:rgba(20,26,38,.45);z-index:100;display:flex;align-items:flex-start;justify-content:center;padding:5vh 16px;overflow:auto}
.modal{background:#fff;border-radius:14px;width:100%;max-width:640px;box-shadow:0 20px 60px rgba(0,0,0,.25);animation:pop .15s ease-out}
.modal.wide{max-width:980px}
@keyframes pop{from{transform:translateY(8px);opacity:0}}
.modal-head{padding:16px 20px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:center;gap:10px}
.modal-head h3{margin:0}
.modal-body{padding:18px 20px}
.modal-foot{padding:14px 20px;border-top:1px solid var(--line);display:flex;justify-content:flex-end;gap:8px;flex-wrap:wrap}
.toasts{position:fixed;bottom:20px;right:20px;z-index:200;display:flex;flex-direction:column;gap:8px}
.toast{background:var(--ink);color:#fff;padding:11px 16px;border-radius:10px;font-size:.88rem;box-shadow:var(--shadow);max-width:360px;animation:pop .15s}
.toast.bad{background:var(--bad)} .toast.ok{background:var(--ok)}

/* ---------- login ---------- */
.auth{min-height:100vh;display:grid;grid-template-columns:1.1fr 1fr}
@media (max-width:860px){.auth{grid-template-columns:1fr}.auth .art{display:none}}
.auth .art{background:var(--brand-ink);color:#e9f1f2;padding:56px;display:flex;flex-direction:column;justify-content:space-between;position:relative;overflow:hidden}
.auth .art::before{content:"";position:absolute;width:520px;height:520px;border-radius:50%;background:radial-gradient(circle,rgba(224,154,44,.28),transparent 65%);right:-160px;top:-120px}
.auth .art h1{color:#fff;font-size:2.3rem;line-height:1.15;max-width:520px;position:relative}
.auth .art p{max-width:460px;opacity:.85;position:relative}
.auth .art .feat{display:flex;gap:18px;flex-wrap:wrap;font-size:.85rem;opacity:.85;position:relative}
.auth .form{display:flex;align-items:center;justify-content:center;padding:32px 20px}
.auth .box{width:100%;max-width:380px}
.auth .box h2{font-size:1.5rem}

.kbd{font-family:ui-monospace,monospace;font-size:.82em;background:#eeebe4;padding:1px 6px;border-radius:5px}
.link-chip{display:inline-flex;align-items:center;gap:6px;padding:5px 10px;border:1px solid var(--line-2);border-radius:8px;font-size:.82rem;background:#fff;margin:2px 4px 2px 0;max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;cursor:pointer;color:var(--brand-2)}
.link-chip:hover{background:var(--brand-soft)}
.grade-input{width:72px;padding:6px 8px;text-align:center}
.sticky-actions{position:sticky;bottom:0;background:#fff;padding:12px 0;border-top:1px solid var(--line);margin-top:10px}