/* CLINED landing — mengikuti token dan gaya aplikasi (hijau #58cc02, tombol bertumpu, sudut membulat). */
:root{
  --bg:#f7f9f6;--card:#fff;--text:#263238;--muted:#6b777b;--line:#dfe7e2;--line-d:#cdd8d1;--surface:#f1f4f1;
  --green:#58cc02;--green-d:#46a302;--blue:#1cb0f6;--blue-d:#1899d6;--yellow:#ffc800;--yellow-d:#e0ae00;
  --orange:#ff9600;--orange-d:#dd8100;--purple:#ce82ff;--purple-d:#a866d9;--red:#ff4b4b;--red-d:#d93a3a;
  --font:"Avenir Next","Nunito",Inter,ui-rounded,system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
  --auto:7000ms;
  color-scheme:light;
}
:root.dark{
  --bg:#101412;--card:#1b211e;--text:#f2f7f3;--muted:#a8b3ac;--line:#354039;--line-d:#232c26;--surface:#252d28;
  color-scheme:dark;
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{height:100%;margin:0}
body{
  display:flex;flex-direction:column;height:100dvh;overflow:hidden;
  background:var(--bg);color:var(--text);font-family:var(--font);-webkit-font-smoothing:antialiased;
  padding-top:env(safe-area-inset-top,0px);
}
button{font:inherit;color:inherit}
a{color:inherit}
:focus-visible{outline:3px solid var(--blue);outline-offset:3px;border-radius:12px}

/* Header */
.top{flex:0 0 auto;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 18px;max-width:1120px;width:100%;margin:0 auto}
.brand{display:flex;align-items:center;gap:11px;text-decoration:none;min-width:0}
.brand img{width:40px;height:40px;border-radius:13px;box-shadow:0 3px 0 rgba(0,0,0,.16)}
.brand span{display:flex;flex-direction:column;line-height:1.1}
.brand b{font-size:19px;font-weight:900}
.brand small{font-size:12px;font-weight:700;color:var(--muted);margin-top:3px}
.top-actions{display:flex;align-items:center;gap:10px}
.icon-btn{width:42px;height:42px;border-radius:14px;border:2px solid var(--line);background:var(--card);font-size:18px;cursor:pointer;display:grid;place-items:center;box-shadow:0 3px 0 var(--line-d);padding:0}
.icon-btn:active{transform:translateY(2px);box-shadow:0 1px 0 var(--line-d)}

/* Buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 24px;border:0;border-radius:16px;cursor:pointer;text-decoration:none;
  background:var(--green);color:#fff;font-weight:900;font-size:16px;line-height:1.1;
  box-shadow:0 4px 0 var(--green-d);
  transition:transform .08s ease,box-shadow .08s ease;
}
.btn:hover{filter:brightness(1.04)}
.btn:active{transform:translateY(3px);box-shadow:0 1px 0 var(--green-d)}
.btn-ghost{background:var(--card);color:var(--blue-d);border:2px solid var(--line);box-shadow:0 4px 0 var(--line-d)}
.btn-ghost:active{box-shadow:0 1px 0 var(--line-d)}
.btn-small{padding:10px 18px;font-size:14px;border-radius:14px}

/* Stage + deck */
.stage{flex:1 1 auto;min-height:0;display:flex}
.deck{
  flex:1;display:flex;overflow-x:auto;overflow-y:hidden;
  scroll-snap-type:x mandatory;scroll-behavior:smooth;overscroll-behavior-x:contain;
  scrollbar-width:none;-webkit-overflow-scrolling:touch;cursor:grab;
}
.deck::-webkit-scrollbar{display:none}
.deck:focus-visible{outline-offset:-4px}
.deck.dragging{scroll-snap-type:none;scroll-behavior:auto;cursor:grabbing;user-select:none}
.deck.dragging *{pointer-events:none}
.deck.settling{scroll-snap-type:none}

.slide{
  --accent:var(--green);--accent-d:var(--green-d);
  flex:0 0 100%;min-width:0;scroll-snap-align:start;scroll-snap-stop:always;
  overflow-y:auto;overflow-x:hidden;display:flex;
  padding:8px 18px 12px;
}
.slide[data-tone="green"]{--accent:var(--green);--accent-d:var(--green-d)}
.slide[data-tone="blue"]{--accent:var(--blue);--accent-d:var(--blue-d)}
.slide[data-tone="orange"]{--accent:var(--orange);--accent-d:var(--orange-d)}
.slide[data-tone="purple"]{--accent:var(--purple);--accent-d:var(--purple-d)}
.slide[data-tone="yellow"]{--accent:var(--yellow);--accent-d:var(--yellow-d)}
.slide[data-tone="red"]{--accent:var(--red);--accent-d:var(--red-d)}

.slide-inner{
  margin:auto;width:100%;max-width:1040px;
  display:grid;grid-template-columns:1fr;gap:22px;align-items:center;
}
.copy{min-width:0}

/* Type: satu keluarga font (yang sama dengan aplikasi), dipakai besar dan berat untuk judul,
   dengan tracking rapat khas judul aplikasi ini — bukan skala default generik. */
h1,h2{margin:0 0 14px;font-weight:900;letter-spacing:-.01em;line-height:1.04;text-wrap:balance}
h1{font-size:clamp(34px,9vw,64px)}
h2{font-size:clamp(27px,6.6vw,44px)}
.lead{margin:0 0 20px;font-size:clamp(15.5px,3.8vw,18px);line-height:1.6;font-weight:600;color:var(--muted);max-width:44ch}

/* Angka besar sebagai statistik, bukan pil dekoratif */
.stat-row{display:flex;flex-wrap:wrap;gap:22px 30px;margin:4px 0 26px;padding:0}
.stat-row>div{display:flex;flex-direction:column;gap:2px}
.stat-row dt{margin:0;font-size:clamp(24px,5.4vw,32px);font-weight:900;letter-spacing:-.02em;line-height:1}
.stat-row dd{margin:0;font-size:12.5px;font-weight:700;color:var(--muted)}

/* Daftar fitur: kalimat lengkap dengan istilah tebal di depan, dipisah garis tipis —
   bukan kartu ikon seragam yang diulang di tiap slide. */
.feature-list{display:grid;gap:0;max-width:48ch;border-top:1px solid var(--line)}
.feature-list>div{padding:13px 0;font-size:14.5px;line-height:1.55;font-weight:600;color:var(--muted);border-bottom:1px solid var(--line)}
.feature-list>div b{color:var(--text);font-weight:800}

.cta-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}
.credit{margin:18px 0 0;font-size:12px;font-weight:700;color:var(--muted)}

/* Visual panel */
.visual{
  min-width:0;padding:20px;border-radius:28px;
  background:color-mix(in srgb,var(--accent) 11%,var(--card));
  border:2px solid color-mix(in srgb,var(--accent) 30%,var(--line));
  box-shadow:0 6px 0 color-mix(in srgb,var(--accent) 30%,var(--line-d));
}

/* Hero: langsung memakai tampilan jalur UAB yang sesungguhnya, tanpa bingkai ponsel dekoratif. */
.visual-path{display:grid;place-items:center;padding:26px 14px}
.path-peek{width:min(280px,100%)}
.path-peek-head{display:flex;align-items:center;gap:10px;padding:11px 12px;border-radius:16px;background:var(--blue);color:#fff;box-shadow:0 4px 0 var(--blue-d)}
.path-peek-mascot{width:32px;height:32px;flex:0 0 32px;display:grid;place-items:center;border-radius:10px;background:#fff;font-size:17px}
.path-peek-head b{display:block;font-size:12.5px;font-weight:900;line-height:1.2}
.path-peek-head small{display:block;font-size:10.5px;font-weight:700;opacity:.92;margin-top:2px}
.path-peek-stats{margin-left:auto;font-size:10.5px;font-weight:800;opacity:.92;white-space:nowrap}
.path-peek-sem{margin:18px 0 6px;text-align:center;font-size:10.5px;font-weight:900;letter-spacing:.04em;color:var(--muted)}
.path-peek-nodes{display:flex;flex-direction:column;align-items:center}
.pnode{position:relative;display:flex;flex-direction:column;align-items:center;padding:8px 0;transform:translateX(var(--x,0))}
.pnode i{
  width:60px;height:60px;display:grid;place-items:center;border-radius:50%;font-style:normal;font-size:25px;
  background:var(--card);border:4px solid var(--line);box-shadow:0 6px 0 var(--line-d);
}
.pnode.is-active i{border-color:var(--green);box-shadow:0 6px 0 var(--green-d)}
.pnode em{position:absolute;top:2px;right:-36px;padding:3px 7px;border-radius:999px;background:var(--orange);color:#fff;border:2px solid var(--orange-d);font-size:8px;font-style:normal;font-weight:900}
.path-peek-labels{display:flex;justify-content:space-between;margin-top:4px;font-size:9.5px;font-weight:800;color:var(--muted);text-align:center}
.path-peek-labels span{flex:1;padding:0 2px}
/* Satu momen animasi: node hero muncul berurutan saat halaman dibuka */
@media (prefers-reduced-motion:no-preference){
  .pnode{animation:pop .5s cubic-bezier(.3,1.5,.5,1) both}
  .pnode:nth-child(1){animation-delay:.25s}.pnode:nth-child(2){animation-delay:.4s}.pnode:nth-child(3){animation-delay:.55s}
}
@keyframes pop{from{opacity:0;transform:translateX(var(--x,0)) translateY(14px) scale(.8)}to{opacity:1;transform:translateX(var(--x,0))}}

/* UAB: daftar semester bergaya daftar isi, status dibaca dari kontras teks, bukan bingkai pil */
.toc{list-style:none;margin:0;padding:0;display:grid;gap:2px;counter-reset:none}
.toc li{display:flex;align-items:baseline;gap:14px;padding:9px 0;border-bottom:1px solid var(--line)}
.toc li:first-child{border-top:1px solid var(--line)}
.toc-sem{flex:0 0 20px;font-size:12px;font-weight:900;color:var(--muted)}
.toc-blocks{display:flex;flex-wrap:wrap;gap:2px 14px}
.toc-blocks span{font-size:13.5px;font-weight:700;color:var(--muted)}
.toc-blocks span.on{color:var(--text);font-weight:900}
.toc-legend{margin:14px 0 0;font-size:12px;font-weight:700;color:var(--muted)}

/* Quiz demo */
.quiz .q{margin:0 0 12px;font-size:14.5px;line-height:1.5;font-weight:700}
.opts{display:grid;gap:8px}
.opt{
  display:flex;align-items:center;gap:10px;width:100%;text-align:left;cursor:pointer;
  padding:10px 12px;border-radius:14px;background:var(--card);border:2px solid var(--line);box-shadow:0 3px 0 var(--line-d);
  font-size:14px;font-weight:800;line-height:1.3;transition:transform .08s ease,box-shadow .08s ease;
}
.opt:active:not(:disabled){transform:translateY(2px);box-shadow:0 1px 0 var(--line-d)}
.opt .l{flex:0 0 28px;height:28px;display:grid;place-items:center;border-radius:9px;background:var(--surface);font-size:13px;font-weight:900}
.opt:disabled{cursor:default}
.opt.is-correct{background:color-mix(in srgb,var(--green) 16%,var(--card));border-color:var(--green);box-shadow:0 3px 0 var(--green-d)}
.opt.is-correct .l{background:var(--green);color:#fff}
.opt.is-wrong{background:color-mix(in srgb,var(--red) 14%,var(--card));border-color:var(--red);box-shadow:0 3px 0 var(--red-d)}
.opt.is-wrong .l{background:var(--red);color:#fff}
.why{margin-top:12px;padding:11px 13px;border-radius:14px;background:var(--card);border:2px solid var(--line);font-size:13.5px;line-height:1.5;font-weight:700}
.why[hidden],#quizReset[hidden]{display:none}
#quizReset{margin-top:10px}

/* Flashcard demo */
.flipwrap{display:grid;justify-items:center;gap:14px}
.flip{
  position:relative;width:100%;max-width:400px;height:260px;padding:0;border:0;background:none;cursor:pointer;
  perspective:1000px;
}
.face{
  position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;
  padding:20px;text-align:center;border-radius:24px;background:var(--card);border:2px solid var(--line);box-shadow:0 6px 0 var(--line-d);
  backface-visibility:hidden;-webkit-backface-visibility:hidden;transition:transform .5s cubic-bezier(.3,1.2,.5,1);
}
.face b{font-size:16px;line-height:1.35;font-weight:900}
.face small{font-size:12px;font-weight:800;color:var(--muted)}
.face.back{transform:rotateY(180deg);border-color:var(--purple);box-shadow:0 6px 0 var(--purple-d)}
.face.back span{font-size:13.5px;font-weight:600;line-height:1.45;color:var(--muted);max-width:32ch}
.face img{width:84px;height:84px}
.flip.is-flipped .front{transform:rotateY(-180deg)}
.flip.is-flipped .back{transform:rotateY(0)}
.rate{display:flex;gap:8px;flex-wrap:wrap;justify-content:center;opacity:.45;transition:opacity .2s}
.rate span{padding:8px 14px;border-radius:12px;font-size:13px;font-weight:900;color:#fff}
.r-again{background:var(--red);box-shadow:0 3px 0 var(--red-d)}
.r-hard{background:var(--orange);box-shadow:0 3px 0 var(--orange-d)}
.r-good{background:var(--green);box-shadow:0 3px 0 var(--green-d)}
.r-easy{background:var(--blue);box-shadow:0 3px 0 var(--blue-d)}
.flip.is-flipped ~ .rate{opacity:1}
@media (prefers-reduced-motion:reduce){.face{transition:none}}

/* Materi: daftar bernomor urut sungguhan (memang berurutan per semester) */
.mlist{list-style:none;counter-reset:m;margin:0;padding:0;display:grid;gap:0}
.mlist li{counter-increment:m;display:flex;align-items:baseline;gap:12px;padding:11px 0;border-bottom:1px solid var(--line);color:var(--muted)}
.mlist li:first-child{border-top:1px solid var(--line)}
.mlist li::before{content:counter(m,decimal-leading-zero);font-size:11px;font-weight:900;color:var(--muted);flex:0 0 18px}
.mlist li.has{color:var(--text)}
.mlist b{font-size:13.5px;font-weight:900}
.mlist span{margin-left:auto;font-size:11.5px;font-weight:700;color:var(--muted);white-space:nowrap}
.mlist li.has span{color:color-mix(in srgb,var(--yellow-d) 70%,var(--text))}

/* Study Lab: daftar alat, bukan grid kartu identik */
.lab-list{list-style:none;margin:0;padding:0;display:grid;gap:0}
.lab-list li{display:flex;align-items:baseline;justify-content:space-between;gap:12px;padding:12px 0;border-bottom:1px solid var(--line)}
.lab-list li:first-child{border-top:1px solid var(--line)}
.lab-list b{font-size:14.5px;font-weight:900}
.lab-list span{font-size:12px;font-weight:700;color:var(--muted);white-space:nowrap}

/* Dashboard */
.dash{display:grid;gap:14px}
.streak{display:flex;align-items:center;gap:12px;padding:12px 14px;border-radius:16px;background:color-mix(in srgb,var(--yellow) 22%,var(--card));border:2px solid var(--yellow);box-shadow:0 3px 0 var(--yellow-d)}
.streak span{font-size:26px}
.streak b{display:block;font-size:15px;font-weight:900}
.streak small{display:block;font-size:12px;font-weight:700;color:var(--muted);margin-top:2px}
.bars{display:grid;gap:10px;padding:14px;border-radius:16px;background:var(--card);border:2px solid var(--line)}
.bar{display:grid;grid-template-columns:78px 1fr 38px;align-items:center;gap:10px;font-size:12.5px;font-weight:800}
.bar em{font-style:normal;text-align:right;color:var(--muted)}
.track{height:12px;border-radius:99px;background:var(--surface);overflow:hidden}
.track i{display:block;height:100%;width:var(--w);border-radius:99px;background:var(--c)}
.lb{display:flex;gap:8px}
.lb-tab{padding:8px 14px;border-radius:12px;font-size:12.5px;font-weight:900;background:var(--surface);color:var(--muted);border:2px solid var(--line)}
.lb-tab.on{background:var(--green);color:#fff;border-color:var(--green-d)}

/* Timer */
.timer{display:grid;justify-items:center;gap:16px;padding:6px 0}
.ring{
  width:min(190px,52vw);aspect-ratio:1;border-radius:50%;display:grid;place-items:center;
  background:conic-gradient(var(--blue) 0 72%,var(--line) 72% 100%);
}
.ring div{width:82%;aspect-ratio:1;border-radius:50%;background:var(--card);display:grid;place-content:center;text-align:center}
.ring b{font-size:clamp(30px,9vw,42px);font-weight:900;font-variant-numeric:tabular-nums}
.ring small{font-size:13px;font-weight:800;color:var(--muted)}
.timer-btns{display:flex;gap:10px}
.tbtn{padding:11px 20px;border-radius:14px;font-weight:900;font-size:14px;background:var(--card);border:2px solid var(--line);box-shadow:0 3px 0 var(--line-d)}
.tbtn.go{background:var(--green);color:#fff;border-color:var(--green-d);box-shadow:0 3px 0 var(--green-d)}
.timer-modes{display:flex;flex-wrap:wrap;gap:8px;justify-content:center}
.timer-modes span{padding:8px 12px;border-radius:12px;font-size:12.5px;font-weight:800;background:var(--surface);border:2px solid var(--line);color:var(--muted)}
.timer-modes .on{background:var(--card);color:var(--text);border-color:var(--blue);box-shadow:0 3px 0 var(--blue-d)}

/* Controls */
.controls{
  flex:0 0 auto;display:flex;align-items:center;justify-content:center;gap:12px;
  padding:10px 18px calc(12px + env(safe-area-inset-bottom,0px));
}
.nav-btn{
  width:48px;height:48px;flex:0 0 48px;display:grid;place-items:center;border-radius:16px;cursor:pointer;padding:0 0 3px;
  background:var(--green);color:#fff;border:0;box-shadow:0 4px 0 var(--green-d);font-size:28px;font-weight:900;line-height:1;
}
.nav-btn:active{transform:translateY(3px);box-shadow:0 1px 0 var(--green-d)}
.nav-play{background:var(--card);color:var(--text);border:2px solid var(--line);box-shadow:0 4px 0 var(--line-d);font-size:13px;padding:0}
.nav-play:active{box-shadow:0 1px 0 var(--line-d)}
.dots{display:flex;align-items:center;gap:7px;padding:0 4px}
.dot{
  position:relative;width:11px;height:11px;padding:0;border:0;border-radius:99px;cursor:pointer;overflow:hidden;
  background:var(--line-d);transition:width .25s ease,background .2s;
}
:root.dark .dot{background:#3c4841}
.dot[aria-current="true"]{width:34px;background:var(--line)}
:root.dark .dot[aria-current="true"]{background:#4b5850}
.dot::after{content:"";position:absolute;inset:0;transform-origin:left;transform:scaleX(0);background:var(--green);border-radius:inherit}
.dot[aria-current="true"]:not(.run)::after{transform:scaleX(1)}
.dot.run::after{animation:fill var(--auto) linear forwards}
@keyframes fill{to{transform:scaleX(1)}}
.dot:focus-visible{outline-offset:4px}

/* Mobile: tampilkan visual/demo tepat di bawah teks pembuka, daftar fitur setelahnya. */
@media (max-width:859px){
  .slide-inner{display:flex;flex-direction:column;gap:0}
  .copy{display:contents}
  .slide-inner h1,.slide-inner h2{order:1}
  .lead{order:2}
  .stat-row{order:3}
  .cta-row{order:3}
  .visual{order:4;margin:4px 0 24px}
  .feature-list{order:5}
  .cta-row.cta-end{order:6;margin-top:24px}
  .credit{order:7}
  .cta-row:not(.cta-end){margin-bottom:0}
  .visual-path{margin-top:4px}
}

/* Desktop */
@media (min-width:860px){
  .top{padding:14px 28px}
  .slide{padding:8px 96px 16px}
  .slide-inner{grid-template-columns:1.02fr 1fr;gap:56px}
  .visual{padding:26px}
  .visual-path{padding:28px 20px}
  .path-peek{width:280px}
  .controls{gap:16px}
  .nav-btn{width:52px;height:52px;flex-basis:52px}
}
/* Layar pendek (HP landscape) */
@media (max-height:640px){
  .slide-inner{gap:16px}
}
@media (prefers-reduced-motion:reduce){
  .deck{scroll-behavior:auto}
  .btn,.opt,.nav-btn{transition:none}
}

/* Modal masuk / daftar: landing tetap terlihat di belakang, diburamkan. */
.am{position:fixed;inset:0;z-index:50;display:grid;place-items:center;padding:18px}
.am[hidden]{display:none}
.am-backdrop{
  position:absolute;inset:0;background:rgba(38,50,56,.38);
  -webkit-backdrop-filter:blur(10px) saturate(1.05);backdrop-filter:blur(10px) saturate(1.05);
  animation:am-fade .2s ease both;
}
.am-card{
  position:relative;width:min(440px,100%);max-height:calc(100dvh - 36px);overflow-y:auto;
  padding:22px 20px 20px;border-radius:26px;background:var(--card);color:var(--text);
  border:2px solid var(--line);box-shadow:0 6px 0 var(--line-d),0 24px 60px rgba(0,0,0,.28);
  animation:am-pop .26s cubic-bezier(.3,1.3,.5,1) both;
}
.am-x{
  position:absolute;top:14px;right:14px;width:38px;height:38px;display:grid;place-items:center;padding:0 0 2px;
  border-radius:13px;border:2px solid var(--line);background:var(--card);color:var(--green);
  font-size:24px;font-weight:900;line-height:1;cursor:pointer;box-shadow:0 3px 0 var(--line-d);
}
.am-x:active{transform:translateY(2px);box-shadow:0 1px 0 var(--line-d)}
.am-kicker{display:block;font-size:11px;font-weight:900;letter-spacing:.06em;color:var(--blue-d)}
.am-card h2{margin:6px 44px 4px 0;font-size:28px}
.am-sub{margin:0 0 14px;font-size:13.5px;font-weight:700;line-height:1.45;color:var(--muted)}
.am-card label{display:block;margin:12px 0 6px;font-size:13px;font-weight:900}
.am-card input{
  width:100%;padding:13px 14px;border-radius:14px;border:2px solid var(--line);background:var(--card);color:var(--text);
  font:inherit;font-size:15px;font-weight:700;
}
.am-card input::placeholder{color:var(--muted);opacity:.8}
.am-card input:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 4px color-mix(in srgb,var(--blue) 25%,transparent)}
.am-hint{display:block;margin-top:6px;font-size:11.5px;font-weight:700;line-height:1.4;color:var(--muted)}
.am-pass{position:relative}
.am-pass input{padding-right:98px}
.am-eye{
  position:absolute;top:50%;right:8px;transform:translateY(-50%);padding:7px 11px;border:0;border-radius:11px;cursor:pointer;
  background:color-mix(in srgb,var(--blue) 14%,var(--card));color:var(--blue-d);font-size:12px;font-weight:900;
}
.am-error{
  margin:14px 0 0;padding:10px 12px;border-radius:12px;font-size:13px;font-weight:800;line-height:1.4;
  background:color-mix(in srgb,var(--red) 14%,var(--card));color:var(--red-d);border:2px solid var(--red);
}
:root.dark .am-error{color:#ff8a8a}
.am-error[hidden]{display:none}
.am-submit{width:100%;margin-top:16px;padding:15px 24px}
.am-submit:disabled{opacity:.7;cursor:progress}
.am-switch{display:block;width:100%;margin-top:12px;padding:8px;border:0;background:none;cursor:pointer;font-size:13.5px;font-weight:900;color:var(--blue-d)}
@keyframes am-fade{from{opacity:0}to{opacity:1}}
@keyframes am-pop{from{opacity:0;transform:translateY(14px) scale(.96)}to{opacity:1;transform:none}}
@media (prefers-reduced-motion:reduce){.am-backdrop,.am-card{animation:none}}