/* =========================================================
   BLOK 19 — design tokens (shared di semua halaman)
   Konsep: "lembar rekam / kartu katalog" — bukan kartu SaaS
   generik. Warna diambil dari nuansa buku catatan klinis lama:
   sampul hijau tua, kertas hangat, tinta ambar & bata.
   Dark mode dioptimasi AMOLED (hitam pekat), diaktifkan lewat
   [data-theme="dark"] di elemen <html>.
   ========================================================= */
@import url("bg.css");

:root{
  --ink-900:#12312B;
  --ink-700:#234840;
  --ink-500:#3F6259;
  --paper:#F2EEDF;
  --paper-raised:#FBF9F0;
  --paper-dim:#E7E1CB;
  --line:#D7CFB2;
  --line-strong:#B9AE84;
  --amber:#B9791F;
  --amber-ink:#7A4E10;
  --amber-soft:#F1DFAF;
  --brick:#9A3A28;
  --brick-soft:#F0D6CB;
  --blue:#385E78;
  --blue-soft:#D9E3E8;
  --hover-bg: var(--paper-raised);
  --shadow-hover: 0 6px 14px rgba(18,49,43,.10);
  --card-bg: var(--paper-raised);
  --card-shadow: 0 2px 6px rgba(18,49,43,.08), 0 1px 2px rgba(18,49,43,.05);
  --card-shadow-hover: 0 12px 24px rgba(18,49,43,.16), 0 4px 8px rgba(18,49,43,.08);
  --surface:rgba(255,254,250,.86);
  --surface-strong:rgba(251,249,241,.97);
  --surface-shadow:0 12px 28px -18px rgba(18,49,43,.42), 0 1px 3px rgba(18,49,43,.06);

  --font-display:'Newsreader', 'Iowan Old Style', ui-serif, Georgia, serif;
  --font-body:'IBM Plex Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono:'IBM Plex Mono', ui-monospace, SFMono-Regular, Menlo, monospace;

  --radius-s:3px;
  --radius-m:6px;

  --dur-fast:.18s;
  --dur-med:.28s;
}

/* ---------- DARK MODE (AMOLED — hitam pekat #000, bukan abu-abu) ---------- */
:root[data-theme="dark"]{
  --ink-900:#F4F1E4;
  --ink-700:#D9D3BA;
  --ink-500:#A79C7E;
  --paper:#000000;
  --paper-raised:#000000;
  --paper-dim:#121208;
  --line:#201F18;
  --line-strong:#3A3826;
  --amber:#D9A23B;
  --amber-ink:#F0C875;
  --amber-soft:#2E2410;
  --brick:#E2604A;
  --brick-soft:#301712;
  --blue:#7FB2D6;
  --blue-soft:#0E1E26;
  --hover-bg: rgba(255,255,255,.045);
  --shadow-hover: 0 6px 16px rgba(0,0,0,.55);
  --card-bg: #0A0A07;
  --card-shadow: inset 0 1px 0 rgba(255,255,255,.05), 0 6px 16px rgba(0,0,0,.6);
  --card-shadow-hover: inset 0 1px 0 rgba(255,255,255,.09), 0 12px 26px rgba(0,0,0,.7);
  --surface:#0A0A07;
  --surface-strong:#0A0A07;
  --surface-shadow:inset 0 1px 0 rgba(255,255,255,.05), 0 8px 20px rgba(0,0,0,.5);
}

*,*::before,*::after{ box-sizing:border-box; }
html,body{ height:100%; }
html{ overflow-x:hidden; } /* jaring pengaman: halaman nggak boleh scroll ke samping di HP */
body{ overflow-x:clip; }   /* clip (bukan hidden) supaya <body> tidak jadi scroll container: window.scrollY & position:sticky normal */
body{
  margin:0;
  background:var(--paper);
  color:var(--ink-900);
  font-family:var(--font-body);
  line-height:1.5;
  -webkit-font-smoothing:antialiased;
  padding-top:env(safe-area-inset-top,0px);
  padding-bottom:env(safe-area-inset-bottom,0px);
  transition: background-color .25s ease, color .25s ease;
}
button{ font-family:inherit; color:inherit; }
[hidden]{ display:none !important; } /* tanpa ini, tombol bertanda hidden tetap tampil karena aturan display lain */
select,input{ font-family:inherit; font-size:1rem; }
::selection{ background:var(--amber-soft); color:var(--ink-900); }

#app{ max-width:760px; margin:0 auto; min-height:100%; width:100%; overflow-x:clip; animation: pageFadeIn var(--dur-med) ease; } /* clip, bukan hidden: hidden mematikan position:sticky (timer CBT, bar filter) */

.screen{ display:none; padding:20px 20px 56px; animation:fade-in .28s ease; }
.screen.active{ display:block; }
@keyframes fade-in{ from{ opacity:0; transform:translateY(6px);} to{ opacity:1; transform:none;} }

/* ---------- transisi halaman & animasi umum ---------- */
@keyframes pageFadeIn{ from{ opacity:0; } to{ opacity:1; } }
@keyframes pageFadeOut{ from{ opacity:1; } to{ opacity:0; } }
body.page-exit{ animation: pageFadeOut .16s ease forwards; }

@keyframes revealPop{ from{ opacity:0; transform:scale(.97); } to{ opacity:1; transform:scale(1); } }
@keyframes slideFadeIn{ from{ opacity:0; transform:translateY(-6px); } to{ opacity:1; transform:translateY(0); } }
.reveal-anim{ animation: slideFadeIn .28s ease; }

@keyframes landingUp{ from{ opacity:0; transform:translateY(10px); } to{ opacity:1; transform:translateY(0); } }
/* fill 'backwards' (bukan 'forwards'): elemen sembunyi selama delay, lalu kembali normal setelah animasi selesai
   sehingga efek hover (transform) tidak ketimpa animasi. */
.landing-reveal{ animation: landingUp .35s ease backwards; }
.landing-1{ animation-delay:0s; }
.landing-2{ animation-delay:.1s; }
.landing-3{ animation-delay:.2s; }
.landing-4{ animation-delay:.3s; }
.landing-5{ animation-delay:.4s; }
.landing-6{ animation-delay:.49s; }
.landing-7{ animation-delay:.58s; }
.landing-8{ animation-delay:.67s; }
.landing-9{ animation-delay:.76s; }

@media (prefers-reduced-motion: reduce){
  *, *::before, *::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  .landing-reveal{ opacity:1 !important; }
}

/* ---------- loading ---------- */
#screen-loading.active{ display:flex; align-items:center; justify-content:center; min-height:100vh; }
.loading-box{ text-align:center; color:var(--ink-500); }
.loading-mark{
  font-family:var(--font-mono); font-weight:600; font-size:1.4rem;
  color:var(--ink-900); border:1.5px solid var(--ink-900); border-radius:50%;
  width:52px;height:52px;line-height:49px; margin:0 auto 14px;
}

/* ---------- theme toggle (posisi konsisten semua halaman) ---------- */
.theme-toggle{
  position:fixed; top:calc(16px + env(safe-area-inset-top,0px)); right:16px; z-index:40;
  width:38px; height:38px; border-radius:50%;
  background:var(--paper-raised); border:1.4px solid var(--line-strong);
  color:var(--ink-900); cursor:pointer;
  display:flex; align-items:center; justify-content:center;
  transition: border-color var(--dur-fast) ease, transform var(--dur-fast) ease, background-color var(--dur-fast) ease;
}
.theme-toggle:hover{ border-color:var(--ink-900); transform:translateY(-1px); }
.theme-toggle svg{ width:18px; height:18px; fill:none; stroke:currentColor; stroke-width:1.6; stroke-linecap:round; stroke-linejoin:round; }
.theme-toggle .icon-moon{ display:block; }
.theme-toggle .icon-sun{ display:none; }
:root[data-theme="dark"] .theme-toggle .icon-moon{ display:none; }
:root[data-theme="dark"] .theme-toggle .icon-sun{ display:block; }

/* ---------- disclaimer banner (casual/cbt/semua-soal) ---------- */
.disclaimer-banner{
  background:var(--amber-soft); border:1px solid var(--amber); color:var(--amber-ink);
  border-radius:var(--radius-s); padding:10px 14px; font-size:.85rem; line-height:1.45;
  margin:4px 4px 20px;
}

/* ---------- page topbar (mode pages: back link + spacing utk toggle) ---------- */
.page-topbar{ padding:18px 4px 0; }

/* ---------- landing (index.html): satu layar, tombol langsung kelihatan ---------- */
/* latar (cahaya lembut + titik) ada di bg.css, dipakai semua halaman */

.page-home .wrap{
  position:relative; z-index:1; max-width:1040px; margin:0 auto; padding:80px 28px 32px;
  min-height:100vh; min-height:100svh; display:flex; flex-direction:column; justify-content:center;
}
.masthead-eyebrow{ font-family:var(--font-mono); font-size:.76rem; letter-spacing:.06em; text-transform:uppercase; color:var(--ink-500); margin:0 0 14px; }
.hero-title{
  font-family:var(--font-display); font-weight:600; margin:0; color:var(--ink-900);
  font-size:clamp(3.4rem,12vw,7.4rem); line-height:.92; letter-spacing:-.02em;
  display:flex; flex-wrap:wrap; align-items:baseline; gap:6px 18px;
}
.hero-word{ white-space:nowrap; }
.masthead-by{ font-family:var(--font-mono); font-weight:500; font-size:1rem; letter-spacing:.01em; color:var(--amber-ink); }
.hero-lead{ font-family:var(--font-display); font-size:clamp(1.08rem,2.2vw,1.4rem); line-height:1.5; color:var(--ink-700); max-width:40ch; margin:20px 0 0; }
.hero-note{ margin:10px 0 0; font-size:.86rem; line-height:1.5; color:var(--ink-500); max-width:56ch; }
.page-home .mode-list{ margin-top:34px; }
.home-foot{ margin-top:26px; }
.home-foot p{ margin:0; font-size:.82rem; line-height:1.5; color:var(--ink-500); }

@media (max-width:780px){
  .page-home .wrap{ padding:64px 20px 24px; justify-content:flex-start; }
  .hero-lead{ margin-top:14px; }
  .page-home .mode-list{ margin-top:22px; gap:10px; }
  .page-home .mode-row{ padding:13px 14px; gap:12px; align-items:center; }
  .page-home .mode-icon{ width:34px; height:34px; }
  .page-home .mode-icon svg{ width:18px; height:18px; }
  .page-home .mode-name{ font-size:1.08rem; margin-bottom:2px; }
  .page-home .mode-desc{ font-size:.84rem; line-height:1.4; }
}
@media (max-width:780px) and (max-height:700px){
  .hero-lead{ display:none; }
  .page-home .wrap{ padding-top:58px; }
}
@media (max-width:780px) and (max-height:600px){
  .hero-note{ display:none; }
  .page-home .wrap{ padding-top:54px; }
  .page-home .mode-list{ margin-top:16px; gap:8px; }
  .page-home .mode-row{ padding:10px 12px; }
}
@media (max-height:520px){
  .hero-lead, .hero-note{ display:none; }
  .hero-title{ font-size:clamp(2.6rem,7vw,3.6rem); }
  .page-home .wrap{ padding:44px 28px 16px; justify-content:flex-start; }
  .page-home .mode-list{ margin-top:14px; gap:10px; grid-template-columns:repeat(2,minmax(0,1fr)); }
  .page-home .mode-row{ padding:10px 14px; gap:12px; align-items:center; }
  .page-home .mode-icon{ width:32px; height:32px; }
  .page-home .mode-icon svg{ width:17px; height:17px; }
  .page-home .mode-name{ font-size:1.05rem; margin-bottom:2px; }
  .page-home .mode-desc{ font-size:.8rem; line-height:1.35; }
  .home-foot{ display:none; }
}
@media (max-height:340px){ .masthead-eyebrow{ display:none; } .page-home .wrap{ padding-top:36px; } }
/* 5 kartu di beranda: layar pendek dipadatkan bertahap supaya semua tombol tetap kelihatan tanpa scroll */
@media (min-width:781px) and (max-height:800px){
  .hero-title{ font-size:clamp(3.4rem,12vw,min(7.4rem,14vh)); }
  .page-home .wrap{ padding-top:60px; padding-bottom:20px; }
  .hero-lead{ margin-top:14px; }
  .page-home .mode-list{ margin-top:22px; gap:12px; }
  .page-home .mode-row{ padding:14px 16px; }
  .home-foot{ margin-top:16px; }
}
@media (max-width:780px) and (max-height:800px){
  .page-home .mode-list{ margin-top:16px; gap:8px; }
  .page-home .mode-row{ padding:10px 12px; }
  .home-foot{ margin-top:16px; }
}
@media (max-width:780px) and (max-height:750px){ .hero-note, .page-home .mode-desc{ display:none; } }
@media (min-width:781px) and (max-height:700px){ .hero-lead{ display:none; } }
@media (min-width:781px) and (max-height:600px){ .hero-note, .page-home .mode-desc{ display:none; } }
@media (max-height:430px){ .page-home .mode-desc{ display:none; } .page-home .wrap{ padding-top:36px; } }
/* ---------- mode terang: warna lebih kaya, kartu lebih menonjol (mode gelap tidak diubah) ---------- */
:root:not([data-theme="dark"]) .page-home .masthead-eyebrow,
:root:not([data-theme="dark"]) .page-home .hero-lead,
:root:not([data-theme="dark"]) .page-home .hero-note,
:root:not([data-theme="dark"]) .page-home .home-foot p{ color:var(--ink-900); }
:root:not([data-theme="dark"]) .page-home .mode-row,
:root:not([data-theme="dark"]) .page-hub .mode-row{
  background:rgba(255,254,250,.82); border-color:rgba(18,49,43,.26);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.95), 0 14px 34px -16px rgba(18,49,43,.42), 0 2px 6px rgba(18,49,43,.07);
}
:root:not([data-theme="dark"]) .page-home .mode-row:hover,
:root:not([data-theme="dark"]) .page-home .mode-row:focus-visible,
:root:not([data-theme="dark"]) .page-hub .mode-row:hover,
:root:not([data-theme="dark"]) .page-hub .mode-row:focus-visible{
  border-color:var(--ink-900);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.95), 0 22px 44px -16px rgba(18,49,43,.55), 0 4px 10px rgba(18,49,43,.10);
}
/* ikon berwarna per kartu */
:root:not([data-theme="dark"]) .page-home .mode-row:nth-child(1) .mode-icon{ background:rgba(28,128,108,.16); border-color:rgba(28,128,108,.6);  color:#14574A; }
:root:not([data-theme="dark"]) .page-home .mode-row:nth-child(2) .mode-icon{ background:rgba(244,166,40,.24); border-color:rgba(190,120,20,.65); color:#7A4E10; }
:root:not([data-theme="dark"]) .page-home .mode-row:nth-child(3) .mode-icon{ background:rgba(84,124,214,.16); border-color:rgba(60,98,190,.55);  color:#2F4E96; }
:root:not([data-theme="dark"]) .page-home .mode-row:nth-child(4) .mode-icon{ background:rgba(226,104,110,.16); border-color:rgba(190,74,84,.55); color:#9A3A40; }
:root:not([data-theme="dark"]) .page-home .mode-row:nth-child(5) .mode-icon{ background:rgba(124,92,196,.16); border-color:rgba(100,70,176,.55); color:#4F3A94; }
/* hub Praktikum: 3 kartu memakai warna ikon yang sama dengan 3 kartu pertama beranda */
:root:not([data-theme="dark"]) .page-hub .mode-row:nth-child(1) .mode-icon{ background:rgba(28,128,108,.16); border-color:rgba(28,128,108,.6);  color:#14574A; }
:root:not([data-theme="dark"]) .page-hub .mode-row:nth-child(2) .mode-icon{ background:rgba(244,166,40,.24); border-color:rgba(190,120,20,.65); color:#7A4E10; }
:root:not([data-theme="dark"]) .page-hub .mode-row:nth-child(3) .mode-icon{ background:rgba(226,104,110,.16); border-color:rgba(190,74,84,.55);  color:#9A3A40; }
:root:not([data-theme="dark"]) .page-hub .mode-row:nth-child(4) .mode-icon{ background:rgba(84,124,214,.16); border-color:rgba(60,98,190,.55);  color:#2F4E96; }
/* jumlah kartu ganjil: kartu terakhir melebar penuh supaya tidak menggantung sendirian */
.page-home .mode-list > .mode-row:last-child:nth-child(odd){ grid-column:1 / -1; }

/* ---------- mode list (kartu katalog, bukan card-kit) ---------- */
.mode-list{ display:grid; grid-template-columns:repeat(2, minmax(0,1fr)); gap:16px; }
@media (max-width:780px){ .mode-list{ grid-template-columns:minmax(0,1fr); gap:14px; } }
.mode-row{
  display:flex; align-items:flex-start; gap:16px;
  width:100%; text-align:left; cursor:pointer; text-decoration:none; color:inherit;
  background:var(--card-bg); border:1px solid var(--line-strong); border-radius:var(--radius-m);
  padding:20px 18px;
  box-shadow:var(--card-shadow);
  transition:background-color var(--dur-fast) ease, transform var(--dur-fast) ease, box-shadow var(--dur-fast) ease, border-color var(--dur-fast) ease;
}
.mode-row:hover, .mode-row:focus-visible{
  border-color:var(--ink-900);
  box-shadow:var(--card-shadow-hover);
  transform:translateY(-3px);
}
.mode-row:active{ transform:translateY(-1px); }
.mode-row:focus-visible{ outline:2px solid var(--ink-700); outline-offset:2px; }
.mode-icon{
  flex:none; width:38px;height:38px; border-radius:50%;
  border:1.4px solid var(--ink-900); display:flex; align-items:center; justify-content:center;
  color:var(--ink-900);
}
.mode-icon svg{ width:20px;height:20px; fill:none; stroke:currentColor; stroke-width:1.6; stroke-linecap:round; stroke-linejoin:round; }
.mode-text{ flex:1; min-width:0; }
.mode-name{
  display:block; font-family:var(--font-display); font-weight:600; font-size:1.2rem; margin-bottom:4px;
}
.mode-desc{ display:block; color:var(--ink-500); font-size:.92rem; }
.mode-count{
  flex:none; font-family:var(--font-mono); color:var(--line-strong); font-size:1.1rem; align-self:center;
  display:inline-block; transition:transform var(--dur-fast) ease, color var(--dur-fast) ease;
}
.mode-row:hover .mode-count{ color:var(--amber-ink); transform:translateX(4px); }

/* ---------- shared subheader ---------- */
.subheader{ padding:18px 4px 10px; border-bottom:1px solid var(--line); margin-bottom:18px; }
.btn-back{
  background:none; border:none; font-family:var(--font-mono); font-size:.85rem;
  color:var(--ink-500); cursor:pointer; padding:0 0 12px; display:inline-block;
  text-decoration:none;
}
.btn-back:hover{ color:var(--ink-900); }
.subheader h2{ font-family:var(--font-display); font-size:1.6rem; margin:0 0 4px; }
.subheader-hint{ margin:0; color:var(--ink-500); font-size:.9rem; }

/* ---------- topic groups (casual) — header seksi EB1/EB2 dipertegas ---------- */
.topic-group{ margin-bottom:22px; background:var(--surface); border:1px solid var(--line-strong); border-radius:var(--radius-m); overflow:hidden; box-shadow:var(--surface-shadow); }
.topic-group-title{
  font-family:var(--font-display); font-weight:700; font-size:1.15rem;
  color:var(--ink-900); background:transparent;
  border:0; border-bottom:1px solid var(--line); border-left:4px solid var(--amber);
  padding:12px 16px; margin:0; border-radius:0;
}
.topic-row{
  display:flex; justify-content:space-between; align-items:center; gap:10px;
  width:100%; background:none; border:none; border-bottom:1px dashed var(--line);
  padding:13px 16px; text-align:left; cursor:pointer; font-size:.95rem; color:var(--ink-900);
  transition:background-color var(--dur-fast) ease;
}
.topic-row:hover, .topic-row:focus-visible{ background:var(--hover-bg); }
.topic-row:last-child{ border-bottom:0; }
.topic-row .tcount{ font-family:var(--font-mono); font-size:.8rem; color:var(--ink-500); flex:none; }

/* ---------- EB select ---------- */
.eb-pick{ display:grid; grid-template-columns:1fr 1fr; gap:14px; }
@media (max-width:480px){ .eb-pick{ grid-template-columns:1fr; } }
.eb-card{
  background:var(--surface); border:1px solid var(--line-strong); border-radius:var(--radius-m); box-shadow:var(--surface-shadow);
  padding:22px 18px; text-align:left; cursor:pointer;
  transition:border-color var(--dur-fast) ease, transform var(--dur-fast) ease, box-shadow var(--dur-fast) ease;
}
.eb-card:hover, .eb-card:focus-visible{ border-color:var(--ink-900); transform:translateY(-2px); box-shadow:var(--shadow-hover); }
.eb-card-title{ font-family:var(--font-display); font-weight:600; font-size:1.35rem; display:block; margin-bottom:6px; }
.eb-card-sub{ color:var(--ink-500); font-size:.88rem; }
.cbt-brief{
  margin-top:22px; background:var(--surface); border:1px solid var(--line-strong); box-shadow:var(--surface-shadow);
  border-radius:var(--radius-m); padding:20px; animation: slideFadeIn .25s ease;
}
.cbt-brief h3{ margin:0 0 10px; font-family:var(--font-display); font-size:1.1rem; }
.cbt-brief ul{ margin:0 0 16px; padding-left:20px; color:var(--ink-700); font-size:.92rem; }
.cbt-brief li{ margin-bottom:6px; }

/* ---------- buttons ---------- */
.btn-primary,.btn-secondary,.btn-submit{
  font-family:var(--font-body); font-weight:600; font-size:.95rem;
  border-radius:var(--radius-s); padding:12px 20px; cursor:pointer; border:1.4px solid transparent;
  transition: background-color var(--dur-fast) ease, color var(--dur-fast) ease, transform var(--dur-fast) ease;
  text-decoration:none; display:inline-block;
}
.btn-primary{ background:var(--ink-900); color:var(--paper); }
.btn-primary:hover{ background:var(--ink-700); }
.btn-secondary{ background:none; border-color:var(--ink-900); color:var(--ink-900); }
.btn-secondary:hover{ background:var(--hover-bg); }
.btn-submit{ background:var(--amber); color:#2A1B03; }
.btn-submit:hover{ background:var(--amber-ink); color:#2A1B03; }
button:disabled{ opacity:.4; cursor:not-allowed; }

/* ---------- CBT timer bar ---------- */
.cbt-timerbar{
  position:sticky; top:0; z-index:20; margin:-20px -20px 18px;
  background:var(--ink-900); color:var(--paper); padding:10px 20px;
  display:flex; align-items:baseline; justify-content:space-between;
  padding-top:calc(10px + env(safe-area-inset-top,0px));
  transition: background-color 1.2s ease;
}
.cbt-timerbar.urgent{ background:var(--brick); animation:pulse-bg 1s infinite; }
@keyframes pulse-bg{ 0%,100%{ filter:brightness(1);} 50%{ filter:brightness(1.18);} }
.timer-label{ font-family:var(--font-mono); font-size:.72rem; opacity:.75; }
.timer-clock{ font-family:var(--font-mono); font-size:1.3rem; font-weight:600; letter-spacing:.02em; }

/* ---------- quiz top bar / progress ---------- */
.quiz-topbar{ display:flex; align-items:center; gap:16px; margin-bottom:18px; }
#quiz-exit-btn{ flex:none; }
.quiz-progress{ flex:1; }
.quiz-progress-text, #quiz-progress-text{ font-family:var(--font-mono); font-size:.78rem; color:var(--ink-500); display:block; margin-bottom:6px; }
.quiz-progress-track{ height:4px; background:var(--paper-dim); border-radius:2px; overflow:hidden; }
.quiz-progress-fill{ height:100%; background:var(--amber); width:0%; transition:width .3s ease; }

.quiz-body{ display:flex; gap:26px; align-items:flex-start; }
.quiz-navigator{ flex:none; width:212px; position:sticky; top:80px; padding:14px; background:var(--surface); border:1px solid var(--line-strong); border-radius:var(--radius-m); box-shadow:var(--surface-shadow); }
.navigator-label{ font-family:var(--font-mono); font-size:.72rem; color:var(--ink-500); margin:0 0 8px; }
.navigator-grid{ display:grid; grid-template-columns:repeat(5,1fr); gap:6px; }
.nav-cell{
  position:relative; aspect-ratio:1; border:1px solid var(--line-strong); border-radius:3px;
  background:var(--paper-raised); font-family:var(--font-mono); font-size:.72rem; color:var(--ink-700);
  cursor:pointer; display:flex; align-items:center; justify-content:center;
  transition: background-color var(--dur-fast) ease, border-color var(--dur-fast) ease;
}
.nav-cell.answered{ background:var(--amber-soft); border-color:var(--amber); color:var(--amber-ink); }
.nav-cell.current{ outline:2px solid var(--ink-900); outline-offset:1px; }
.nav-cell.flagged::after{
  content:""; position:absolute; top:2px; right:2px; width:6px;height:6px; border-radius:50%; background:var(--blue);
}
.navigator-legend{ margin-top:12px; display:flex; flex-direction:column; gap:6px; font-size:.74rem; color:var(--ink-500); }
.navigator-legend span{ display:flex; align-items:center; gap:7px; }
.lg{ width:10px;height:10px;border-radius:2px;display:inline-block;border:1px solid var(--line-strong); }
.lg-answered{ background:var(--amber-soft); border-color:var(--amber); }
.lg-flag{ background:var(--paper-raised); position:relative; }
.lg-flag::after{ content:""; position:absolute; top:-2px; right:-2px; width:5px;height:5px;border-radius:50%; background:var(--blue); }
.lg-blank{ background:var(--paper-raised); }

.quiz-main{ flex:1; min-width:0; background:var(--surface); border:1px solid var(--line-strong); border-radius:var(--radius-m); padding:20px 18px 18px; box-shadow:var(--surface-shadow); }

.question-meta{ display:flex; flex-wrap:wrap; gap:8px; margin-bottom:14px; }
.tag{
  font-family:var(--font-mono); font-size:.7rem; letter-spacing:.02em;
  padding:3px 8px; border-radius:14px; border:1px solid var(--line-strong); color:var(--ink-500);
}
.tag-eb{ background:var(--blue-soft); border-color:var(--blue); color:var(--blue); }
.tag-topic{ background:var(--paper-raised); }
.tag-year{ background:var(--paper-raised); }
.tag-ai{ background:var(--paper-raised); border-style:dashed; cursor:help; }

.question-text{
  font-family:var(--font-display); font-size:1.28rem; line-height:1.45; color:var(--ink-900);
  white-space:pre-wrap; margin:0 0 22px;
}

.options-list{ display:flex; flex-direction:column; gap:10px; margin-bottom:6px; }
.option-btn{
  display:flex; gap:12px; align-items:flex-start; text-align:left;
  background:var(--surface); border:1.3px solid var(--line-strong); border-radius:var(--radius-m);
  padding:13px 16px; cursor:pointer; font-size:.98rem; color:var(--ink-900); width:100%;
  animation: revealPop .18s ease;
  transition: border-color var(--dur-fast) ease, background-color var(--dur-fast) ease, transform var(--dur-fast) ease, box-shadow var(--dur-fast) ease;
}
.option-btn:hover:not(:disabled){ border-color:var(--ink-900); transform:translateY(-1px); box-shadow:var(--shadow-hover); }
.option-letter{
  flex:none; font-family:var(--font-mono); font-weight:600; color:var(--ink-500);
  width:22px;height:22px; border:1px solid var(--line-strong); border-radius:50%;
  display:flex; align-items:center; justify-content:center; font-size:.76rem;
}
.option-btn.selected{ border-color:var(--ink-900); background:var(--blue-soft); }
.option-btn.selected .option-letter{ background:var(--ink-900); color:var(--paper); border-color:var(--ink-900); }
.option-btn.correct{ border-color:var(--amber); background:var(--amber-soft); }
.option-btn.correct .option-letter{ background:var(--amber); color:#2A1B03; border-color:var(--amber); }
.option-btn.wrong{ border-color:var(--brick); background:var(--brick-soft); }
.option-btn.wrong .option-letter{ background:var(--brick); color:#fff; border-color:var(--brick); }
.option-btn:disabled{ cursor:default; opacity:1; }

.feedback-panel{
  margin-top:16px; padding:16px 18px; border-radius:var(--radius-m); background:var(--surface);
  border:1px solid var(--line-strong);
}
.feedback-verdict{ margin:0 0 10px; font-family:var(--font-display); font-weight:600; font-size:1.05rem; }
.feedback-verdict.is-correct{ color:var(--amber-ink); }
.feedback-verdict.is-wrong{ color:var(--brick); }
.feedback-explanation{ white-space:pre-wrap; font-size:.9rem; color:var(--ink-700); line-height:1.6; }

.quiz-actions{ margin-top:22px; display:flex; flex-direction:column; gap:14px; }
.flag-check{ font-size:.86rem; color:var(--ink-500); display:flex; align-items:center; gap:8px; cursor:pointer; }
.quiz-actions-nav{ display:flex; justify-content:flex-end; gap:10px; flex-wrap:wrap; }

@media (max-width:640px){
  .quiz-navigator{ display:none !important; }
  .quiz-actions-nav{ justify-content:space-between; }
  .quiz-actions-nav button{ flex:1; }
}

/* ---------- result / recap ---------- */
.result-box{ text-align:center; padding:30px 16px 24px; background:var(--surface); border:1px solid var(--line-strong); border-radius:var(--radius-m); box-shadow:var(--surface-shadow); margin-bottom:20px; }
.result-eyebrow{ font-family:var(--font-mono); font-size:.75rem; color:var(--ink-500); margin:0 0 8px; }
.result-box h2{ font-family:var(--font-display); font-size:1.7rem; margin:0 0 12px; }
.result-score{ font-family:var(--font-mono); font-size:2.4rem; font-weight:600; color:var(--amber-ink); margin:0; }
.result-sub{ color:var(--ink-500); font-size:.88rem; margin:6px 0 0; }
.result-actions{ margin-top:22px; display:flex; flex-direction:column; align-items:center; gap:14px; }
.filter-check{ font-size:.88rem; color:var(--ink-500); display:flex; align-items:center; gap:8px; }

.recap-item{ border-bottom:1px solid var(--line); padding:20px 2px; }
.recap-item-head{ display:flex; gap:8px; align-items:center; margin-bottom:10px; flex-wrap:wrap; }
.recap-index{ font-family:var(--font-mono); color:var(--ink-500); font-size:.8rem; }
.verdict-pill{ font-family:var(--font-mono); font-size:.72rem; padding:2px 9px; border-radius:999px; }
.verdict-pill.is-correct{ background:var(--amber-soft); color:var(--amber-ink); }
.verdict-pill.is-wrong{ background:var(--brick-soft); color:var(--brick); }
.verdict-pill.is-blank{ background:var(--paper-dim); color:var(--ink-500); }
.recap-question{ font-family:var(--font-display); font-size:1.08rem; white-space:pre-wrap; margin:0 0 12px; }
.recap-options{ display:flex; flex-direction:column; gap:6px; margin-bottom:12px; }
.recap-option{ font-size:.9rem; padding:8px 12px; border-radius:var(--radius-s); border:1px solid var(--line); display:flex; gap:8px; }
.recap-option.is-correct{ border-color:var(--amber); background:var(--amber-soft); }
.recap-option.is-user-wrong{ border-color:var(--brick); background:var(--brick-soft); }
.recap-explain{ white-space:pre-wrap; font-size:.86rem; color:var(--ink-700); background:var(--surface); border:1px solid var(--line); padding:12px 14px; border-radius:var(--radius-s); line-height:1.6; }

/* ---------- lihat semua soal ---------- */
.viewall-filters{
  display:flex; gap:10px; flex-wrap:wrap; align-items:center; margin-bottom:18px;
  position:sticky; top:8px; background:var(--surface-strong); padding:10px 12px; z-index:5;
  border:1px solid var(--line-strong); border-radius:var(--radius-m); box-shadow:var(--surface-shadow); max-width:100%;
}
.viewall-filters select, .viewall-filters input[type=search]{
  padding:8px 10px; border:1px solid var(--line-strong); border-radius:var(--radius-s); background:var(--paper-raised); color:var(--ink-900);
  flex:1 1 140px; min-width:0; max-width:100%;
  overflow:hidden; text-overflow:ellipsis; white-space:nowrap;
}
.viewall-filters input[type=search]{ flex:2 1 160px; }
.viewall-count{ font-family:var(--font-mono); font-size:.76rem; color:var(--ink-500); flex:none; }

@media (max-width:480px){
  .viewall-filters{ flex-direction:column; align-items:stretch; }
  .viewall-filters select, .viewall-filters input[type=search]{ width:100%; flex:none; }
  .viewall-filters .filter-check{ width:100%; }
}

.viewall-item{ border-bottom:1px solid var(--line); padding:20px 2px; }
.recap-list, .viewall-list{ background:var(--surface); border:1px solid var(--line-strong); border-radius:var(--radius-m); padding:0 16px; box-shadow:var(--surface-shadow); }
.recap-item:last-child, .viewall-item:last-child{ border-bottom:0; }
.reveal-btn{
  font-family:var(--font-mono); font-size:.78rem; color:var(--ink-500);
  background:var(--paper-raised); border:1px dashed var(--line-strong); border-radius:var(--radius-s);
  padding:8px 14px; cursor:pointer; display:inline-block; margin:6px 8px 6px 0;
}
.reveal-btn:hover{ border-color:var(--ink-900); color:var(--ink-900); }
.viewall-empty{ text-align:center; color:var(--ink-500); padding:40px 10px; }

@media (min-width:641px){
  .screen{ padding-left:28px; padding-right:28px; }
}

/* ---------- penyesuaian HP untuk halaman belajar ---------- */
@media (max-width:780px){
  .viewall-filters{ position:static; }              /* bar filter menumpuk tinggi di HP: jangan menempel, biar tidak memakan layar */
  .quiz-main{ padding:16px 14px; }
  .recap-list, .viewall-list{ padding:0 12px; }
}

/* teks kecil yang berdiri langsung di atas latar (bukan di dalam panel): digelapkan di mode terang supaya tetap terbaca di atas cahaya warna */
:root:not([data-theme="dark"]) .btn-back,
:root:not([data-theme="dark"]) .subheader-hint,
:root:not([data-theme="dark"]) .quiz-progress-text,
:root:not([data-theme="dark"]) #quiz-progress-text{ color:var(--ink-700); }
:root:not([data-theme="dark"]) .btn-back:hover{ color:var(--ink-900); }

/* ---------- Praktikum (praktikum.html) ---------- */
.page-topbar.multi{ display:flex; flex-wrap:wrap; gap:0 18px; }
.mode-list.stack{ grid-template-columns:minmax(0,1fr); }
.mode-sub{ display:block; margin-top:6px; font-family:var(--font-mono); font-size:.74rem; color:var(--ink-500); }
.mode-sub:empty{ display:none; }

/* gambar di atas teks soal: lebar maksimum 100%, tap untuk memperbesar */
.q-figure{ margin:0 0 14px; }
.q-figure-btn{ display:block; max-width:100%; padding:0; border:0; background:none; cursor:zoom-in; }
.q-figure img{ display:block; max-width:100%; max-height:min(75vh,560px); width:auto; height:auto; border-radius:var(--radius-m); border:1px solid var(--line-strong); background:var(--surface); }
.q-figure figcaption{ margin-top:6px; font-family:var(--font-mono); font-size:.7rem; color:var(--ink-500); }
.q-figure-missing{ margin:0 0 14px; padding:12px 14px; border:1px dashed var(--line-strong); border-radius:var(--radius-s); font-size:.84rem; color:var(--ink-500); }

/* pembahasan: label sumber + rujukan */
.expl-foot{ margin-top:12px; padding-top:10px; border-top:1px dashed var(--line-strong); display:flex; flex-direction:column; align-items:flex-start; gap:6px; white-space:normal; }
.expl-note{ font-family:var(--font-mono); font-size:.7rem; padding:2px 8px; border:1px dashed var(--line-strong); border-radius:14px; color:var(--ink-500); }
.expl-ref{ font-size:.78rem; line-height:1.45; color:var(--ink-500); }

/* layar zoom gambar */
html.zoom-open{ overflow:hidden; }
.zoom-overlay{
  position:fixed; inset:0; z-index:100; display:flex; overflow:auto; padding:16px;
  background:rgba(0,0,0,.92); -webkit-overflow-scrolling:touch; animation:revealPop .18s ease;
}
.zoom-img{ display:block; flex:none; margin:auto; width:auto; height:auto; max-width:none; max-height:none; cursor:zoom-in; background:#fff; }
.zoom-overlay.zoomed .zoom-img{ cursor:zoom-out; }
.zoom-close{
  position:fixed; top:calc(12px + env(safe-area-inset-top,0px)); right:14px; z-index:101;
  width:40px; height:40px; border-radius:50%; border:1px solid rgba(255,255,255,.45);
  background:rgba(0,0,0,.65); color:#fff; font-size:1.05rem; cursor:pointer;
}
.zoom-hint{
  position:fixed; left:0; right:0; bottom:calc(10px + env(safe-area-inset-bottom,0px)); margin:0; padding:0 16px;
  text-align:center; font-family:var(--font-mono); font-size:.68rem; color:rgba(255,255,255,.78); pointer-events:none;
}