/* Dek Anki Saya — tampilan
   Layout: header navy berlapis + kolom konten 720px, kartu belajar sebagai "lembar" utama. */
:root{
  --navy:#0E2A5C; --navy2:#16407F; --a:#2563EB; --a-ink:#1D4ED8; --a-soft:#E8F0FF;
  --bg:#F3F6FB; --card:#FFFFFF; --ink:#0F1B2D; --mut:#5B6B82; --line:#E3E9F2; --soft:#F5F8FD;
  --red:#DC4C4C; --org:#E08A1E; --grn:#169B72; --gold:#F5B83D;
  --shadow:0 1px 2px rgba(15,27,45,.04),0 8px 24px rgba(15,27,45,.06);
  --shadow-lg:0 2px 6px rgba(15,27,45,.06),0 18px 48px rgba(15,27,45,.12);
  --r:18px;
  --font:"Plus Jakarta Sans","Noto Sans JP",system-ui,-apple-system,"Segoe UI",sans-serif;
  --jp:"Noto Sans JP","Hiragino Sans","Yu Gothic",sans-serif;
}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]){
  --navy:#0A1630; --navy2:#12264B; --a:#6EA0FF; --a-ink:#8DB4FF; --a-soft:#17284A;
  --bg:#0B1220; --card:#121B2C; --ink:#E7EDF7; --mut:#93A3BA; --line:#22304A; --soft:#162238;
  --red:#F07B7B; --org:#F2A851; --grn:#4FD1A5; --gold:#F5C55A;
  --shadow:0 1px 2px rgba(0,0,0,.35),0 8px 24px rgba(0,0,0,.3); --shadow-lg:0 18px 48px rgba(0,0,0,.45); color-scheme:dark}}
:root[data-theme="dark"]{
  --navy:#0A1630; --navy2:#12264B; --a:#6EA0FF; --a-ink:#8DB4FF; --a-soft:#17284A;
  --bg:#0B1220; --card:#121B2C; --ink:#E7EDF7; --mut:#93A3BA; --line:#22304A; --soft:#162238;
  --red:#F07B7B; --org:#F2A851; --grn:#4FD1A5; --gold:#F5C55A;
  --shadow:0 1px 2px rgba(0,0,0,.35),0 8px 24px rgba(0,0,0,.3); --shadow-lg:0 18px 48px rgba(0,0,0,.45); color-scheme:dark}

*{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%}
body{min-height:100vh;background:var(--bg);color:var(--ink);font:400 15px/1.6 var(--font);-webkit-font-smoothing:antialiased}
a{color:var(--a)}
button{font:inherit;color:inherit;cursor:pointer;background:none;border:0}
[hidden]{display:none!important}
:focus-visible{outline:2px solid var(--a);outline-offset:2px;border-radius:10px}
svg.i{width:20px;height:20px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;flex:none}
.wrap{max-width:720px;margin:0 auto;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}

/* ---------- header ---------- */
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top,0px);z-index:30;background:var(--navy)}
.top{position:sticky;top:env(safe-area-inset-top,0px);z-index:20;background:linear-gradient(135deg,var(--navy),var(--navy2));color:#fff}
.top-in{display:flex;align-items:center;gap:10px;height:60px}
.ib{flex:none;width:40px;height:40px;border-radius:12px;display:grid;place-items:center;color:#fff;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.14);transition:background .15s}
.ib:hover{background:rgba(255,255,255,.18)}
.brand{flex:1;min-width:0;display:flex;align-items:center;gap:10px}
.logo{flex:none;width:34px;height:34px;border-radius:10px;display:grid;place-items:center;background:linear-gradient(135deg,#60A5FA,#2563EB);font:700 17px var(--jp);color:#fff;box-shadow:inset 0 0 0 1px rgba(255,255,255,.25)}
.tt{min-width:0;display:flex;flex-direction:column;line-height:1.2}
.tt small{font-size:11.5px;color:rgba(255,255,255,.65);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.tt b{font-weight:700;font-size:16px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

main{padding-block:20px 120px;outline:none}
.view-in{animation:viewIn .28s ease both}
@keyframes viewIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}

/* ---------- hero (beranda) ---------- */
.hero{background:linear-gradient(135deg,var(--navy),var(--navy2));color:#fff;padding-block:6px 56px}
.hero h1{font-size:26px;line-height:1.25;font-weight:800;letter-spacing:-.01em;text-wrap:balance}
.hero p{color:rgba(255,255,255,.72);font-size:14px;margin-top:6px;max-width:52ch}
.kpis{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:18px}
.kpi{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.12);border-radius:14px;padding:12px 14px}
.kpi b{display:block;font-size:22px;font-weight:800;font-variant-numeric:tabular-nums;line-height:1.1}
.kpi small{font-size:12px;color:rgba(255,255,255,.7)}
.lift{margin-top:-38px;position:relative}
main.has-hero{padding-top:0}

/* ---------- komponen umum ---------- */
.card-s{background:var(--card);border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--shadow)}
.pad{padding:18px}
.stack{display:flex;flex-direction:column;gap:12px}
.sec{display:flex;justify-content:space-between;align-items:center;margin:26px 2px 12px}
.sec h2{font-size:12px;font-weight:800;letter-spacing:.12em;text-transform:uppercase;color:var(--mut)}
.sec span{font-size:12.5px;color:var(--mut)}
.mut{color:var(--mut)} .small{font-size:13px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 18px;border-radius:14px;font-weight:700;font-size:14.5px;border:1px solid var(--line);background:var(--card);color:var(--ink);text-decoration:none;transition:transform .12s,background .15s,box-shadow .15s}
.btn:hover{background:var(--soft)}
.btn:active{transform:scale(.98)}
.btn.pri{background:linear-gradient(135deg,var(--a),var(--a-ink));border-color:transparent;color:#fff;box-shadow:0 6px 16px rgba(37,99,235,.28)}
.btn.pri:hover{filter:brightness(1.05)}
.btn.ghost{background:var(--a-soft);border-color:transparent;color:var(--a-ink)}
.btn.danger{color:var(--red)}
.btn.block{width:100%}
.btn:disabled{opacity:.45;cursor:default;transform:none}
.row{display:flex;gap:10px;flex-wrap:wrap}
.row>.grow{flex:1}
.chip{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:700;padding:4px 10px;border-radius:999px;background:var(--a-soft);color:var(--a-ink);font-variant-numeric:tabular-nums}
.pill-n{color:var(--a)}.pill-l{color:var(--red)}.pill-r{color:var(--grn)}
.counts{display:flex;gap:12px;font-weight:800;font-size:13.5px;font-variant-numeric:tabular-nums}
.bar{height:6px;border-radius:6px;background:var(--soft);overflow:hidden;display:flex}
.bar i{display:block;height:100%}
.bar .b-r{background:var(--grn)}.bar .b-l{background:var(--org)}
.empty{text-align:center;padding:36px 16px;color:var(--mut)}
.empty .ill{width:64px;height:64px;margin:0 auto 12px;border-radius:20px;display:grid;place-items:center;background:var(--a-soft);color:var(--a)}
.empty .ill svg{width:30px;height:30px}

/* ---------- upload ---------- */
.drop{display:flex;align-items:center;gap:16px;padding:18px;border:1.5px dashed color-mix(in srgb,var(--a) 45%,var(--line));border-radius:var(--r);background:var(--card);box-shadow:var(--shadow-lg);cursor:pointer;transition:border-color .15s,background .15s}
.drop:hover,.drop.over{border-color:var(--a);background:color-mix(in srgb,var(--a-soft) 55%,var(--card))}
.drop .ic{flex:none;width:52px;height:52px;border-radius:16px;display:grid;place-items:center;background:linear-gradient(135deg,#60A5FA,#2563EB);color:#fff}
.drop .ic svg{width:26px;height:26px}
.drop .tx{flex:1;min-width:0}
.drop b{display:block;font-size:16px}
.drop small{display:block;color:var(--mut);font-size:13px;line-height:1.45;margin-top:2px}
.imp{margin-top:12px}
.prog{height:8px;border-radius:8px;background:var(--soft);overflow:hidden;margin-top:6px}
.prog i{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--a),#60A5FA);transition:width .25s}

/* ---------- dek ---------- */
.deck{display:grid;grid-template-columns:auto 1fr auto;gap:14px;align-items:center;padding:16px;text-decoration:none;color:inherit;transition:transform .15s,box-shadow .15s}
.deck:hover{transform:translateY(-1px);box-shadow:var(--shadow-lg)}
.tile{width:48px;height:48px;border-radius:14px;display:grid;place-items:center;color:#fff;font:700 19px var(--jp)}
.deck .tx{min-width:0}
.deck b{display:block;font-size:16px;line-height:1.35;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.deck small{display:block;font-size:12.5px;color:var(--mut);margin:2px 0 8px}
.due{display:flex;flex-direction:column;align-items:flex-end;gap:6px}
.due b{font-size:20px;font-weight:800;color:var(--a);font-variant-numeric:tabular-nums;line-height:1}
.due small{font-size:11px;color:var(--mut);margin:0}
.del{width:34px;height:34px;border-radius:10px;display:grid;place-items:center;color:var(--mut)}
.del:hover{background:var(--soft);color:var(--red)}

/* ---------- halaman dek ---------- */
.overview{display:grid;grid-template-columns:auto 1fr;gap:18px;align-items:center}
.ring{position:relative;width:104px;height:104px}
.ring svg{width:104px;height:104px;transform:rotate(-90deg)}
.ring .t{position:absolute;inset:0;display:grid;place-items:center;text-align:center;line-height:1.1}
.ring .t b{font-size:22px;font-weight:800;font-variant-numeric:tabular-nums}
.ring .t small{font-size:11px;color:var(--mut);display:block}
.stats3{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}
.st{background:var(--soft);border-radius:12px;padding:10px 12px}
.st b{display:block;font-size:20px;font-weight:800;font-variant-numeric:tabular-nums;line-height:1.15}
.st small{font-size:11.5px;color:var(--mut)}
.st.n b{color:var(--a)}.st.l b{color:var(--red)}.st.r b{color:var(--grn)}
.sub{display:grid;grid-template-columns:1fr auto auto;gap:10px;align-items:center;padding:13px 16px;border-top:1px solid var(--line)}
.sub:first-child{border-top:0}
.sub .nm{min-width:0}
.sub .nm b{display:block;font-weight:700;font-size:14.5px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.sub .nm .bar{margin-top:7px;max-width:220px}
.sq{width:38px;height:38px;border-radius:11px;display:grid;place-items:center;background:var(--a-soft);color:var(--a-ink)}
.sq.p{background:var(--a);color:#fff}
.set{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:14px 0;border-top:1px solid var(--line)}
.set:first-child{border-top:0;padding-top:0}.set:last-child{padding-bottom:0}
.set input[type=number]{width:84px;height:40px;border-radius:12px;border:1px solid var(--line);background:var(--soft);color:var(--ink);text-align:center;font:700 15px var(--font)}
.switch{position:relative;width:50px;height:30px;flex:none}
.switch input{opacity:0;width:0;height:0}
.switch span{position:absolute;inset:0;border-radius:999px;background:var(--line);transition:.2s}
.switch span:before{content:"";position:absolute;width:24px;height:24px;left:3px;top:3px;border-radius:50%;background:#fff;box-shadow:0 1px 3px rgba(0,0,0,.2);transition:.2s}
.switch input:checked+span{background:var(--a)}
.switch input:checked+span:before{transform:translateX(20px)}
.switch input:focus-visible+span{outline:2px solid var(--a);outline-offset:2px}

/* ---------- belajar ---------- */
.sess{display:flex;align-items:center;gap:12px;margin-bottom:12px}
.sess .prog{flex:1;margin:0;height:6px}
.stage{position:relative;background:var(--card);border:1px solid var(--line);border-radius:22px;box-shadow:var(--shadow-lg);min-height:56vh;overflow:hidden}
.stage.tap{cursor:pointer}
.stage.enter{animation:cardIn .32s cubic-bezier(.2,.8,.2,1) both}
.stage.flip{animation:flip .3s ease both}
@keyframes cardIn{from{opacity:0;transform:translateY(14px) scale(.985)}to{opacity:1;transform:none}}
@keyframes flip{0%{transform:perspective(900px) rotateY(0)}50%{transform:perspective(900px) rotateY(8deg);opacity:.75}100%{transform:none;opacity:1}}
.hint-tap{text-align:center;font-size:12px;color:var(--mut);margin-top:10px}
.dock{position:fixed;left:0;right:0;bottom:0;z-index:15;padding:12px max(12px,env(safe-area-inset-right,0px)) calc(12px + env(safe-area-inset-bottom,0px)) max(12px,env(safe-area-inset-left,0px));background:color-mix(in srgb,var(--bg) 88%,transparent);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);border-top:1px solid var(--line)}
.dock .in{max-width:720px;margin:0 auto}
.grade{display:grid;grid-template-columns:repeat(4,1fr);gap:8px}
.grade button{height:62px;border-radius:14px;background:var(--card);border:1px solid var(--line);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;font-weight:800;font-size:14.5px;line-height:1.1;box-shadow:var(--shadow);transition:transform .1s}
.grade button:active{transform:scale(.96)}
.grade small{font-weight:600;font-size:11.5px;color:var(--mut)}
.grade .g1{color:var(--red)}.grade .g2{color:var(--org)}.grade .g3{color:var(--grn)}.grade .g4{color:var(--a)}
.icon-btn{height:36px;padding:0 12px;border-radius:10px;display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:700;color:var(--mut);border:1px solid var(--line);background:var(--card)}
.icon-btn:disabled{opacity:.4}
.icon-btn svg.i{width:16px;height:16px}
.done{text-align:center;padding:34px 20px}
.done .badge{width:84px;height:84px;margin:0 auto 14px;border-radius:26px;display:grid;place-items:center;background:linear-gradient(135deg,#34D399,#059669);color:#fff;box-shadow:0 12px 30px rgba(5,150,105,.35);animation:pop .5s cubic-bezier(.2,1.4,.4,1) both}
.done .badge svg{width:40px;height:40px;stroke-width:2.6}
@keyframes pop{from{transform:scale(.4);opacity:0}to{transform:none;opacity:1}}
.done h2{font-size:22px;font-weight:800}
.done .stats3{margin:18px 0 6px;text-align:left}

/* ---------- jelajah ---------- */
.searchbox{position:relative}
.searchbox svg{position:absolute;left:15px;top:50%;transform:translateY(-50%);color:var(--mut)}
.search{width:100%;height:50px;border-radius:15px;border:1px solid var(--line);background:var(--card);box-shadow:var(--shadow);padding:0 16px 0 44px;font:500 15px var(--font);color:var(--ink)}
.tabs{display:flex;gap:6px;margin-top:12px;overflow-x:auto;padding-bottom:2px}
.tab{flex:none;height:34px;padding:0 14px;border-radius:999px;border:1px solid var(--line);background:var(--card);font-size:13px;font-weight:700;color:var(--mut)}
.tab[aria-pressed="true"]{background:var(--ink);border-color:var(--ink);color:var(--card)}
.clist{display:flex;flex-direction:column;gap:8px;margin-top:12px}
.ci{display:grid;grid-template-columns:10px 1fr auto;gap:12px;align-items:center;text-decoration:none;color:var(--ink);background:var(--card);border:1px solid var(--line);border-radius:14px;padding:12px 14px;transition:border-color .15s}
.ci:hover{border-color:color-mix(in srgb,var(--a) 40%,var(--line))}
.dot{width:10px;height:10px;border-radius:50%;background:var(--line)}
.dot.s1{background:var(--org)}.dot.s2{background:var(--grn)}.dot.s0{background:var(--a)}
.ci .tx{min-width:0}
.ci b{display:block;font:600 16px/1.4 var(--jp);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.ci small{display:block;font-size:12.5px;color:var(--mut);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.ci .chev{color:var(--mut)}
.more{display:flex;margin:16px auto 0}
.pager{display:grid;grid-template-columns:56px 1fr 56px;gap:8px}
.pager .btn{height:52px;padding:0}

/* ---------- statistik ---------- */
.chart{display:grid;grid-template-columns:repeat(14,1fr);gap:6px;align-items:end;height:150px;margin-top:14px}
.col{display:flex;flex-direction:column;align-items:center;gap:6px;height:100%;justify-content:flex-end}
.col em{font-style:normal;font-size:10px;font-weight:700;color:var(--mut);font-variant-numeric:tabular-nums}
.col i{display:block;width:100%;border-radius:6px 6px 3px 3px;background:linear-gradient(180deg,#60A5FA,var(--a));min-height:3px}
.col.today i{background:linear-gradient(180deg,#34D399,var(--grn))}
.col small{font-size:10px;color:var(--mut);font-variant-numeric:tabular-nums}
.legend{display:flex;gap:14px;flex-wrap:wrap;margin-top:12px;font-size:12.5px;color:var(--mut)}
.legend span{display:inline-flex;align-items:center;gap:6px}
.legend i{width:10px;height:10px;border-radius:3px;display:inline-block}
.dist{height:14px;border-radius:8px;overflow:hidden;display:flex;margin-top:12px;background:var(--soft)}
.dist i{display:block;height:100%}

/* ---------- dialog & toast ---------- */
.modal{position:fixed;inset:0;z-index:50;background:rgba(8,15,30,.5);display:grid;place-items:center;padding:16px;animation:fade .15s ease both}
@keyframes fade{from{opacity:0}to{opacity:1}}
.dlg{background:var(--card);border:1px solid var(--line);border-radius:20px;padding:20px;max-width:380px;width:100%;box-shadow:var(--shadow-lg);animation:cardIn .2s ease both}
.dlg b{display:block;font-size:17px;margin-bottom:6px}
.dlg p{color:var(--mut);margin-bottom:16px}
.dlg .row{justify-content:flex-end}
.btn.red{background:var(--red);border-color:var(--red);color:#fff}
.toast{position:fixed;left:50%;bottom:calc(100px + env(safe-area-inset-bottom,0px));transform:translateX(-50%) translateY(16px);background:var(--ink);color:var(--card);padding:11px 16px;border-radius:14px;font-size:14px;font-weight:600;opacity:0;pointer-events:none;transition:.25s;z-index:60;max-width:calc(100vw - 32px);box-shadow:var(--shadow-lg)}
.toast.on{opacity:1;transform:translateX(-50%) translateY(0)}

@media (max-width:420px){.kpi b{font-size:19px}.grade button{height:58px;font-size:13.5px}.overview{grid-template-columns:1fr;justify-items:center}.overview .stats3{width:100%}}
@media (prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important}}