/* ===== EduKelas v2 — Styles ===== */
*{box-sizing:border-box;margin:0;padding:0}
:root{
  --brand:#5b46f5;--brand-2:#7c5cff;--brand-soft:#efeafe;
  --bg:#f5f6fb;--surface:#ffffff;--surface-2:#fafbfd;--line:#e8e9f1;
  --text:#16181d;--muted:#6b7280;--muted-2:#9aa1ad;
  --green:#16a34a;--green-bg:#dcfce7;--red:#dc2626;--red-bg:#fee2e2;
  --amber:#d97706;--amber-bg:#fef3c7;--blue:#0ea5e9;--blue-bg:#e0f2fe;
  --radius:16px;--radius-sm:11px;--shadow:0 1px 3px rgba(20,24,45,.06),0 8px 30px rgba(20,24,45,.05);
  --shadow-lg:0 18px 60px rgba(20,24,45,.16);--sidebar-w:262px;
}
[data-theme="dark"]{
  --brand:#7c5cff;--brand-2:#9b86ff;--brand-soft:#241f43;
  --bg:#0f1117;--surface:#171a22;--surface-2:#1d212b;--line:#2a2f3c;
  --text:#e7e9ee;--muted:#9aa1ad;--muted-2:#6b7280;
  --green:#34d399;--green-bg:#0c2a20;--red:#f87171;--red-bg:#341417;
  --amber:#fbbf24;--amber-bg:#33270a;--blue:#38bdf8;--blue-bg:#0b2433;
  --shadow:0 1px 3px rgba(0,0,0,.4);--shadow-lg:0 18px 60px rgba(0,0,0,.55);
}
html,body{height:100%}
body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;line-height:1.5}
.hidden{display:none!important}
button{font-family:inherit;cursor:pointer}
input,select,textarea{font-family:inherit;font-size:14px}
a{color:var(--brand)}

/* ===== Buttons ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:7px;border:1px solid var(--line);background:var(--surface);color:var(--text);padding:9px 15px;border-radius:var(--radius-sm);font-weight:600;font-size:13.5px;transition:.15s;white-space:nowrap}
.btn:hover{border-color:var(--brand);color:var(--brand)}
.btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;border:none;box-shadow:0 6px 18px rgba(91,70,245,.32)}
.btn-primary:hover{color:#fff;filter:brightness(1.05)}
.btn-danger{color:var(--red);border-color:transparent;background:var(--red-bg)}
.btn-danger:hover{color:#fff;background:var(--red);border-color:var(--red)}
.btn-ghost{background:transparent;border-color:transparent;color:var(--muted)}
.btn-ghost:hover{background:var(--surface-2);color:var(--text)}
.btn-block{width:100%}
.btn-lg{padding:12px 18px;font-size:15px}
.btn-sm{padding:6px 11px;font-size:12.5px}
.btn-icon{padding:8px 10px}

/* ===== Auth ===== */
.auth-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:22px;background:radial-gradient(1200px 600px at 15% -10%,rgba(124,92,255,.20),transparent),radial-gradient(900px 500px at 110% 110%,rgba(14,165,233,.16),transparent),var(--bg)}
.auth-card{width:100%;max-width:430px;background:var(--surface);border:1px solid var(--line);border-radius:22px;box-shadow:var(--shadow-lg);padding:34px}
.brand{display:flex;align-items:center;gap:13px;margin-bottom:24px}
.brand-logo{width:46px;height:46px;border-radius:13px;background:linear-gradient(135deg,var(--brand),var(--brand-2));display:flex;align-items:center;justify-content:center;font-size:24px;box-shadow:0 8px 22px rgba(91,70,245,.34)}
.brand-name{font-weight:800;font-size:19px;letter-spacing:-.3px}
.brand-tag{font-size:12.5px;color:var(--muted)}
.auth-card h2{font-size:21px;letter-spacing:-.4px}
.auth-card .sub{color:var(--muted);font-size:14px;margin:3px 0 18px}
.field{margin-bottom:14px}
.field label{display:block;font-size:12.5px;font-weight:600;color:var(--muted);margin-bottom:6px}
.field input,.field select,.field textarea{width:100%;padding:11px 13px;border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--surface-2);color:var(--text);outline:none;transition:.15s}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--brand);background:var(--surface);box-shadow:0 0 0 3px rgba(91,70,245,.13)}
.field textarea{resize:vertical;min-height:84px}
.auth-err{background:var(--red-bg);color:var(--red);padding:10px 13px;border-radius:10px;font-size:13px;margin-bottom:14px}
.auth-switch{text-align:center;margin-top:16px;font-size:13.5px;color:var(--muted)}
.auth-switch b{color:var(--brand);cursor:pointer}
.demo-box{margin-top:22px;border-top:1px dashed var(--line);padding-top:16px}
.demo-box .dt{font-size:12px;color:var(--muted-2);text-align:center;margin-bottom:10px;text-transform:uppercase;letter-spacing:.4px}
.demo-row{display:grid;grid-template-columns:1fr 1fr 1fr;gap:8px}
.demo-chip{display:flex;flex-direction:column;gap:1px;align-items:flex-start;background:var(--surface-2);border:1px solid var(--line);border-radius:10px;padding:9px 10px;font-size:11px;color:var(--muted);text-align:left}
.demo-chip b{font-size:12.5px;color:var(--text)}
.demo-chip:hover{border-color:var(--brand);background:var(--brand-soft)}

/* ===== App shell ===== */
.app{display:flex;min-height:100vh}
.scrim{display:none;position:fixed;inset:0;background:rgba(10,12,20,.45);z-index:40}
.sidebar{width:var(--sidebar-w);background:var(--surface);border-right:1px solid var(--line);display:flex;flex-direction:column;padding:18px 14px;position:fixed;top:0;bottom:0;left:0;z-index:50}
.side-brand{display:flex;align-items:center;gap:11px;padding:6px 8px 18px}
.side-brand .brand-logo{width:38px;height:38px;font-size:20px;border-radius:11px}
.nav{flex:1;display:flex;flex-direction:column;gap:3px;overflow-y:auto}
.nav .nav-sec{font-size:10.5px;text-transform:uppercase;letter-spacing:.6px;color:var(--muted-2);padding:14px 12px 5px;font-weight:700}
.nav a{display:flex;align-items:center;gap:11px;padding:9px 12px;border-radius:10px;color:var(--muted);font-weight:600;font-size:14px;text-decoration:none;transition:.13s}
.nav a .ic{font-size:17px;width:20px;text-align:center}
.nav a:hover{background:var(--surface-2);color:var(--text)}
.nav a.active{background:var(--brand-soft);color:var(--brand)}
.nav a .pill{margin-left:auto;background:var(--brand);color:#fff;font-size:10.5px;font-weight:700;padding:1px 7px;border-radius:20px}
.side-user{display:flex;align-items:center;gap:11px;padding:11px 10px;border-top:1px solid var(--line);margin-top:6px}
.side-user .info{overflow:hidden}
.side-user .nm{font-weight:700;font-size:13.5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.side-user .rl{font-size:11.5px;color:var(--muted);text-transform:capitalize}
.avatar{width:38px;height:38px;border-radius:11px;background:var(--brand);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:14px;flex-shrink:0}
.main{flex:1;margin-left:var(--sidebar-w);display:flex;flex-direction:column;min-width:0}
.topbar{position:sticky;top:0;z-index:30;background:color-mix(in srgb,var(--surface) 88%,transparent);backdrop-filter:blur(10px);border-bottom:1px solid var(--line);display:flex;align-items:center;gap:12px;padding:13px 26px}
.topbar h1{font-size:18px;font-weight:800;letter-spacing:-.4px;white-space:nowrap}
.hamburger{display:none;background:transparent;border:none;font-size:22px;color:var(--text)}
.topbar-search{position:relative;margin-left:auto;width:min(340px,38vw)}
.topbar-search .si{position:absolute;left:12px;top:50%;transform:translateY(-50%);font-size:14px;opacity:.6}
.topbar-search input{width:100%;padding:9px 12px 9px 34px;border:1px solid var(--line);border-radius:30px;background:var(--surface-2);color:var(--text);outline:none}
.topbar-search input:focus{border-color:var(--brand);background:var(--surface)}
.search-pop{position:absolute;top:46px;left:0;right:0;background:var(--surface);border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow-lg);max-height:60vh;overflow:auto;padding:6px;z-index:60}
.search-pop .sr{display:flex;align-items:center;gap:10px;padding:9px 11px;border-radius:10px;cursor:pointer}
.search-pop .sr:hover{background:var(--surface-2)}
.search-pop .sr .t{font-weight:600;font-size:13.5px}
.search-pop .sr .s{font-size:11.5px;color:var(--muted)}
.search-pop .empty{padding:16px;text-align:center;color:var(--muted);font-size:13px}
.icon-btn{position:relative;background:var(--surface-2);border:1px solid var(--line);border-radius:11px;width:40px;height:40px;font-size:17px;display:flex;align-items:center;justify-content:center;color:var(--text)}
.icon-btn:hover{border-color:var(--brand)}
.notif-wrap{position:relative}
.notif-dot{position:absolute;top:7px;right:8px;width:9px;height:9px;background:var(--red);border-radius:50%;border:2px solid var(--surface)}
.notif-panel{position:absolute;top:48px;right:0;width:340px;max-height:64vh;overflow:auto;background:var(--surface);border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow-lg);z-index:60;padding:8px}
.notif-panel .nh{display:flex;align-items:center;justify-content:space-between;padding:8px 10px}
.notif-panel .nh b{font-size:14px}
.notif-item{display:flex;gap:10px;padding:10px 11px;border-radius:10px;cursor:pointer}
.notif-item:hover{background:var(--surface-2)}
.notif-item.unread{background:var(--brand-soft)}
.notif-item .nt{font-size:13px}
.notif-item .nd{font-size:11px;color:var(--muted);margin-top:2px}
.notif-empty{padding:22px;text-align:center;color:var(--muted);font-size:13px}
.content{padding:26px;max-width:1180px;width:100%;margin:0 auto}

/* ===== Generic ===== */
.page-head{display:flex;align-items:flex-start;justify-content:space-between;gap:14px;margin-bottom:20px;flex-wrap:wrap}
.page-head .lead{color:var(--muted);font-size:14px;margin-top:3px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:20px}
.card.pad-lg{padding:26px}
.section-title{font-size:16px;font-weight:800;letter-spacing:-.3px;margin-bottom:14px;display:flex;align-items:center;gap:9px}
.row{display:flex;gap:10px;flex-wrap:wrap}
.between{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}
.spacer{flex:1}
.mt{margin-top:18px}.mt-sm{margin-top:10px}
.grid{display:grid;gap:16px}
.muted{color:var(--muted)}
.empty-state{text-align:center;padding:48px 20px;color:var(--muted)}
.empty-state .em{font-size:42px;margin-bottom:10px}
.badge{display:inline-flex;align-items:center;gap:5px;padding:3px 10px;border-radius:30px;font-size:11.5px;font-weight:700}
.badge.gray{background:var(--surface-2);color:var(--muted)}
.badge.green{background:var(--green-bg);color:var(--green)}
.badge.red{background:var(--red-bg);color:var(--red)}
.badge.amber{background:var(--amber-bg);color:var(--amber)}
.badge.blue{background:var(--blue-bg);color:var(--blue)}
.badge.brand{background:var(--brand-soft);color:var(--brand)}
.chip{display:inline-flex;align-items:center;gap:6px;padding:5px 11px;border-radius:30px;background:var(--surface-2);border:1px solid var(--line);font-size:12.5px;font-weight:600}

/* ===== Stats ===== */
.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:14px;margin-bottom:20px}
.stat{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:17px 18px;box-shadow:var(--shadow);position:relative;overflow:hidden}
.stat .ic{width:40px;height:40px;border-radius:11px;display:flex;align-items:center;justify-content:center;font-size:19px;background:var(--brand-soft);margin-bottom:11px}
.stat .v{font-size:26px;font-weight:800;letter-spacing:-.6px}
.stat .l{font-size:12.5px;color:var(--muted);margin-top:1px}

/* ===== Cards grids ===== */
.class-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:16px}
.class-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden;display:flex;flex-direction:column;transition:.16s;cursor:pointer}
.class-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);border-color:var(--brand)}
.class-card .cover{height:92px;display:flex;align-items:center;justify-content:center;font-size:38px;position:relative}
.class-card .body{padding:15px 16px 17px;display:flex;flex-direction:column;flex:1}
.class-card .ttl{font-weight:700;font-size:15px;letter-spacing:-.2px;margin-bottom:5px}
.class-card .meta{font-size:12.5px;color:var(--muted);margin-bottom:11px;display:flex;align-items:center;gap:7px;flex-wrap:wrap}
.progress{height:7px;border-radius:30px;background:var(--surface-2);overflow:hidden;margin-top:auto}
.progress > i{display:block;height:100%;background:linear-gradient(90deg,var(--brand),var(--brand-2));border-radius:30px}

/* ===== Tables ===== */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);background:var(--surface)}
table.tbl{width:100%;border-collapse:collapse;font-size:13.5px;min-width:520px}
table.tbl th{text-align:left;padding:12px 15px;background:var(--surface-2);color:var(--muted);font-weight:700;font-size:12px;text-transform:uppercase;letter-spacing:.4px;border-bottom:1px solid var(--line)}
table.tbl td{padding:12px 15px;border-bottom:1px solid var(--line)}
table.tbl tr:last-child td{border-bottom:none}
table.tbl tr:hover td{background:var(--surface-2)}
.u-cell{display:flex;align-items:center;gap:10px}
.u-cell .avatar{width:32px;height:32px;font-size:12px;border-radius:9px}

/* ===== Modal ===== */
.modal-back{position:fixed;inset:0;background:rgba(10,12,20,.5);backdrop-filter:blur(2px);display:flex;align-items:center;justify-content:center;padding:18px;z-index:100;animation:fade .15s}
@keyframes fade{from{opacity:0}to{opacity:1}}
.modal{background:var(--surface);border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow-lg);width:100%;max-width:540px;max-height:90vh;overflow:auto;animation:pop .18s}
.modal.lg{max-width:720px}
@keyframes pop{from{transform:translateY(14px) scale(.98);opacity:0}to{transform:none;opacity:1}}
.modal .mh{display:flex;align-items:center;justify-content:space-between;padding:18px 22px;border-bottom:1px solid var(--line);position:sticky;top:0;background:var(--surface)}
.modal .mh h3{font-size:17px;letter-spacing:-.3px}
.modal .mb{padding:20px 22px}
.modal .mf{padding:15px 22px;border-top:1px solid var(--line);display:flex;justify-content:flex-end;gap:9px;position:sticky;bottom:0;background:var(--surface)}
.close-x{background:var(--surface-2);border:none;width:32px;height:32px;border-radius:9px;font-size:17px;color:var(--muted)}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:13px}

/* ===== Lessons / detail ===== */
.detail-head{background:linear-gradient(135deg,var(--brand),var(--brand-2));border-radius:var(--radius);padding:26px;color:#fff;margin-bottom:20px;position:relative;overflow:hidden}
.detail-head h2{font-size:23px;letter-spacing:-.5px}
.detail-head .dm{opacity:.92;margin-top:8px;font-size:14px;max-width:680px}
.detail-head .dtags{display:flex;gap:8px;margin-top:14px;flex-wrap:wrap}
.detail-head .dtags .chip{background:rgba(255,255,255,.18);border:none;color:#fff}
.tabs{display:flex;gap:4px;border-bottom:1px solid var(--line);margin-bottom:18px;overflow-x:auto}
.tabs button{background:none;border:none;padding:11px 15px;font-weight:700;font-size:14px;color:var(--muted);border-bottom:2px solid transparent;white-space:nowrap}
.tabs button.active{color:var(--brand);border-bottom-color:var(--brand)}
.lesson{display:flex;align-items:center;gap:13px;padding:14px 16px;border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--surface);margin-bottom:10px}
.lesson .ln{width:30px;height:30px;border-radius:9px;background:var(--brand-soft);color:var(--brand);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:13px;flex-shrink:0}
.lesson .lt{font-weight:600;font-size:14px}
.lesson .ld{font-size:12px;color:var(--muted)}
.lesson.done{background:var(--green-bg);border-color:transparent}
.lesson.done .ln{background:var(--green);color:#fff}

/* ===== Exam taking ===== */
.exam-bar{position:sticky;top:62px;z-index:20;display:flex;align-items:center;justify-content:space-between;gap:12px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:13px 18px;box-shadow:var(--shadow);margin-bottom:16px}
.exam-timer{font-weight:800;font-size:19px;font-variant-numeric:tabular-nums;display:flex;align-items:center;gap:8px}
.exam-timer.warn{color:var(--red)}
.q-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:20px;margin-bottom:14px;box-shadow:var(--shadow)}
.q-card .qh{display:flex;gap:11px;margin-bottom:14px}
.q-card .qn{width:28px;height:28px;border-radius:8px;background:var(--brand);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:13px;flex-shrink:0}
.q-card .qt{font-weight:600;font-size:15px}
.opt{display:flex;align-items:center;gap:11px;padding:13px 15px;border:1px solid var(--line);border-radius:var(--radius-sm);margin-bottom:9px;cursor:pointer;transition:.13s;background:var(--surface)}
.opt:hover{border-color:var(--brand);background:var(--brand-soft)}
.opt.sel{border-color:var(--brand);background:var(--brand-soft);box-shadow:0 0 0 2px rgba(91,70,245,.18) inset}
.opt .mk{width:22px;height:22px;border-radius:50%;border:2px solid var(--line);display:flex;align-items:center;justify-content:center;flex-shrink:0;font-size:12px;color:#fff}
.opt.sel .mk{background:var(--brand);border-color:var(--brand)}
.opt.multi .mk{border-radius:6px}
.opt.correct{border-color:var(--green);background:var(--green-bg)}
.opt.wrong{border-color:var(--red);background:var(--red-bg)}
.opt.correct .mk{background:var(--green);border-color:var(--green)}
.opt.wrong .mk{background:var(--red);border-color:var(--red)}

/* ===== Result / score ring ===== */
.score-ring{width:150px;height:150px;border-radius:50%;display:flex;align-items:center;justify-content:center;flex-direction:column;margin:0 auto}
.score-ring .pc{font-size:34px;font-weight:800}
.score-ring .pl{font-size:12px;color:var(--muted)}
.result-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:12px;margin:20px 0}
.rstat{text-align:center;padding:14px;background:var(--surface-2);border-radius:var(--radius-sm)}
.rstat .v{font-size:22px;font-weight:800}
.rstat .l{font-size:12px;color:var(--muted)}

/* ===== Leaderboard / gamification ===== */
.xp-banner{display:flex;align-items:center;gap:16px;background:linear-gradient(135deg,#1e1b4b,#4c1d95);color:#fff;border-radius:var(--radius);padding:20px 24px;margin-bottom:20px}
.xp-banner .xpv{font-size:30px;font-weight:800}
.lb-item{display:flex;align-items:center;gap:13px;padding:12px 14px;border-bottom:1px solid var(--line)}
.lb-item:last-child{border:none}
.lb-rank{width:30px;height:30px;border-radius:9px;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:13px;background:var(--surface-2);color:var(--muted)}
.lb-rank.g1{background:#fde68a;color:#92400e}.lb-rank.g2{background:#e5e7eb;color:#374151}.lb-rank.g3{background:#fcd9b6;color:#9a3412}
.lb-item.me{background:var(--brand-soft);border-radius:10px}
.badge-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:12px}
.badge-card{text-align:center;padding:18px 12px;border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--surface)}
.badge-card.locked{opacity:.42;filter:grayscale(.6)}
.badge-card .be{font-size:34px}
.badge-card .bn{font-weight:700;font-size:13.5px;margin-top:7px}
.badge-card .bd{font-size:11.5px;color:var(--muted);margin-top:2px}

/* ===== Discussion / announcement ===== */
.disc{display:flex;gap:11px;padding:12px 0;border-bottom:1px solid var(--line)}
.disc:last-child{border:none}
.disc .db{background:var(--surface-2);border-radius:12px;padding:10px 13px;flex:1}
.disc .dn{font-weight:700;font-size:13px}
.disc .dt{font-size:11px;color:var(--muted)}
.ann{border-left:3px solid var(--brand);background:var(--surface-2);border-radius:0 var(--radius-sm) var(--radius-sm) 0;padding:13px 16px;margin-bottom:11px}
.ann .at{font-weight:700;font-size:14.5px}
.ann .ab{font-size:13.5px;color:var(--muted);margin-top:3px}
.ann .am{font-size:11.5px;color:var(--muted-2);margin-top:6px}

/* ===== Toasts ===== */
.toasts{position:fixed;bottom:22px;right:22px;display:flex;flex-direction:column;gap:9px;z-index:200}
.toast{background:var(--text);color:var(--surface);padding:12px 17px;border-radius:11px;font-size:13.5px;font-weight:600;box-shadow:var(--shadow-lg);animation:slideup .22s;max-width:330px;display:flex;align-items:center;gap:9px}
.toast.ok{background:var(--green)}.toast.err{background:var(--red)}.toast.ok,.toast.err{color:#fff}
@keyframes slideup{from{transform:translateY(16px);opacity:0}to{transform:none;opacity:1}}

/* ===== Chart ===== */
.chart-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.chart-box{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow)}
.chart-box h3{font-size:14px;margin-bottom:12px}
.chart-box .cw{position:relative;height:240px}

/* certificate */
.cert{max-width:760px;margin:0 auto;background:var(--surface);border:6px double var(--brand);border-radius:14px;padding:46px 50px;text-align:center}
.cert .ct{font-size:13px;letter-spacing:3px;text-transform:uppercase;color:var(--muted)}
.cert .cn{font-size:30px;font-weight:800;margin:14px 0;color:var(--brand)}
.cert .cx{font-size:15px;color:var(--muted);margin:8px 0}
.cert .cs{font-size:46px;font-weight:800;margin:10px 0}

/* ===== Responsive ===== */
@media(max-width:920px){.chart-grid{grid-template-columns:1fr}}
@media(max-width:860px){
  .sidebar{transform:translateX(-100%);transition:.22s;box-shadow:var(--shadow-lg)}
  .sidebar.open{transform:none}
  .main{margin-left:0}
  .scrim.show{display:block}
  .hamburger{display:block}
  .topbar{padding:12px 16px}
  .content{padding:18px 16px}
  .topbar-search{width:auto;flex:1}
  .grid-2{grid-template-columns:1fr}
}
@media print{.sidebar,.topbar,.toasts,.modal-back{display:none!important}.main{margin:0}.content{max-width:none}.no-print{display:none!important}}

/* ===========================================================
   v3 (Pro) — AI, Panel Admin, perbaikan notifikasi
   =========================================================== */
.ai-btn{background:linear-gradient(135deg,#7c5cff,#5b46f5);color:#fff;border:none}
.ai-btn:hover{filter:brightness(1.08)}
.ai-btn-sm{font-size:11.5px;background:var(--brand-soft);color:var(--brand);border:none;border-radius:7px;padding:3px 9px;margin-left:8px;cursor:pointer;font-weight:600}
.ai-btn-sm:hover{filter:brightness(.97)}
code{background:var(--surface-2);padding:2px 7px;border-radius:6px;font-family:ui-monospace,Menlo,Consolas,monospace;font-size:12.5px}
.ai-tips{border:1px solid var(--brand);background:linear-gradient(180deg,var(--brand-soft),transparent)}
.ai-fb{font-size:12px;margin-top:6px;color:var(--brand)}
.table-wrap{overflow-x:auto}
.tbl{width:100%;border-collapse:collapse;font-size:13.5px}
.tbl th{text-align:left;padding:9px 10px;color:var(--muted);font-weight:600;border-bottom:1px solid var(--line);white-space:nowrap}
.tbl td{padding:9px 10px;border-bottom:1px solid var(--line);vertical-align:top}
/* perbaikan panel notifikasi */
.notif-panel{display:none}
.notif-panel.show{display:block}
.notif-head{display:flex;align-items:center;justify-content:space-between;padding:11px 14px;border-bottom:1px solid var(--line);font-size:14px}
.notif-list{max-height:360px;overflow:auto}
/* widget asisten AI */
.ai-fab{position:fixed;right:22px;bottom:22px;width:58px;height:58px;border-radius:50%;background:linear-gradient(135deg,#7c5cff,#5b46f5);color:#fff;font-size:26px;border:none;cursor:pointer;box-shadow:0 10px 26px rgba(91,70,245,.45);align-items:center;justify-content:center;z-index:60;transition:.2s}
.ai-fab:hover{transform:scale(1.07)}
.ai-panel{position:fixed;right:22px;bottom:90px;width:380px;max-width:calc(100vw - 32px);height:540px;max-height:calc(100vh - 130px);background:var(--surface);border:1px solid var(--line);border-radius:18px;box-shadow:0 24px 60px rgba(0,0,0,.28);display:none;flex-direction:column;overflow:hidden;z-index:61}
.ai-panel.open{display:flex}
.ai-head{display:flex;align-items:center;justify-content:space-between;padding:14px 16px;background:linear-gradient(135deg,#7c5cff,#5b46f5);color:#fff}
.ai-head .ai-sub{font-size:11.5px;opacity:.85}
.ai-msgs{flex:1;overflow:auto;padding:14px;display:flex;flex-direction:column;gap:10px;background:var(--bg)}
.ai-msg{max-width:86%;padding:10px 13px;border-radius:14px;font-size:13.5px;line-height:1.55}
.ai-msg.user{align-self:flex-end;background:var(--brand);color:#fff;border-bottom-right-radius:4px}
.ai-msg.ai{align-self:flex-start;background:var(--surface);border:1px solid var(--line);border-bottom-left-radius:4px}
.ai-input{display:flex;gap:8px;padding:12px;border-top:1px solid var(--line);background:var(--surface)}
.ai-input textarea{flex:1;resize:none;max-height:90px;padding:10px 12px;border:1px solid var(--line);border-radius:11px;background:var(--surface-2);color:var(--text);font-family:inherit;font-size:13.5px}
.ai-input .btn{padding:0 16px;font-size:16px}
.yt-embed{position:relative;width:100%;max-width:560px;aspect-ratio:16/9;margin-top:10px;border-radius:12px;overflow:hidden;background:#000}
.yt-embed iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
@media(max-width:520px){.ai-panel{right:10px;left:10px;width:auto;bottom:84px}}

/* ===========================================================
   v3.1 — PWA & tampilan mobile native
   =========================================================== */
html{ -webkit-text-size-adjust:100%; }
body{ -webkit-tap-highlight-color:transparent; overscroll-behavior-y:none; }
.content{ -webkit-overflow-scrolling:touch; }

/* tombol pasang aplikasi (muncul hanya jika installable) */
.install-btn{ display:none !important; }
body.can-install .install-btn{ display:inline-flex !important; }

/* area aman (notch) saat mode standalone/PWA */
.pwa-standalone .topbar{ padding-top:calc(env(safe-area-inset-top) + 6px); }
.pwa-standalone .sidebar{ padding-top:env(safe-area-inset-top); }

/* ---------- Bottom tab bar (mobile) ---------- */
.mobile-tab{ display:none; }
@media (max-width:860px){
  .mobile-tab{
    display:flex; position:fixed; left:0; right:0; bottom:0; z-index:55;
    background:color-mix(in srgb, var(--surface) 88%, transparent);
    -webkit-backdrop-filter:saturate(1.3) blur(12px);
    backdrop-filter:saturate(1.3) blur(12px);
    border-top:1px solid var(--line);
    padding-bottom:env(safe-area-inset-bottom);
    box-shadow:0 -6px 22px rgba(0,0,0,.08);
  }
  .mtab{
    flex:1; background:none; border:none; cursor:pointer;
    padding:9px 2px 8px; display:flex; flex-direction:column; align-items:center; gap:3px;
    color:var(--muted); font-size:10.5px; font-weight:600; font-family:inherit;
    -webkit-tap-highlight-color:transparent; transition:color .15s;
  }
  .mtab .mi{ font-size:20px; line-height:1; transition:transform .18s; }
  .mtab .ml{ max-width:100%; overflow:hidden; text-overflow:ellipsis; white-space:nowrap; }
  .mtab.active{ color:var(--brand); }
  .mtab.active .mi{ transform:translateY(-2px) scale(1.1); }
  .mtab:active{ opacity:.6; }

  /* beri ruang agar konten tidak tertutup tab bar */
  .content{ padding-bottom:calc(78px + env(safe-area-inset-bottom)) !important; }
  /* sembunyikan hamburger — navigasi utama lewat tab bar & tombol Menu */
  .topbar .hamburger{ display:none; }
  /* posisikan FAB AI & panel di atas tab bar */
  .ai-fab{ bottom:calc(86px + env(safe-area-inset-bottom)); }
  .ai-panel{ bottom:calc(150px + env(safe-area-inset-bottom)); top:calc(56px + env(safe-area-inset-top)); height:auto; }
}