/* ==========================================================
   Understanding Fast English — American Language Center
   Mobile-first. Light theme only. No dark blocks.
   Swap the three brand hexes below for ALC's exact values.
   ========================================================== */

:root{
  /* --- ALC brand --- */
  --purple:#4B2E83;      /* Royal Purple  */
  --plum:#3A1D4D;        /* Deep Plum     */
  --gold:#E8A33D;        /* Amber Gold    */

  --purple-lt:#EFE9F7;
  --purple-bd:#CFC0E6;
  --gold-lt:#FDF3E0;
  --gold-bd:#F0CE92;
  --gold-dk:#A8701A;

  --page:#FAF9FC;
  --card:#FFFFFF;
  --ink:#241932;
  --muted:#6B6280;
  --rule:#E4E0EC;
  --ok:#2E7D5B;
  --ok-lt:#E7F4EE;

  --head:'Montserrat',system-ui,sans-serif;
  --body:'Poppins',system-ui,sans-serif;

  --wrap:38rem;
  --topbar:56px;
  --botbar:68px;
}

*{margin:0;padding:0;box-sizing:border-box;-webkit-tap-highlight-color:transparent}

html{-webkit-text-size-adjust:100%}

body{
  background:var(--page);
  color:var(--ink);
  font-family:var(--body);
  font-size:17px;
  line-height:1.65;
  padding-top:var(--topbar);
  padding-bottom:calc(var(--botbar) + env(safe-area-inset-bottom,0px));
  overflow-wrap:break-word;
}
body.no-botbar{padding-bottom:2rem}

.wrap{max-width:var(--wrap);margin:0 auto;padding:0 1.1rem}

h1,h2,h3,h4{font-family:var(--head);line-height:1.25;letter-spacing:-0.015em;color:var(--plum)}
h1{font-size:1.65rem;font-weight:800}
h2{font-size:1.3rem;font-weight:700}
h3{font-size:1.08rem;font-weight:700}
p{margin:0 0 .85rem}
ul,ol{margin:0 0 .9rem 1.15rem}
li{margin-bottom:.4rem}
strong{font-weight:600}
a{color:var(--purple)}
:focus-visible{outline:3px solid var(--gold);outline-offset:2px;border-radius:4px}

/* ---------- TOP BAR : always tells you where you are ---------- */
.topbar{
  position:fixed;top:0;left:0;right:0;height:var(--topbar);z-index:60;
  background:var(--card);border-bottom:1px solid var(--rule);
  display:flex;align-items:center;gap:.7rem;padding:0 .6rem;
}
.tb-home{
  display:flex;align-items:center;justify-content:center;
  min-width:46px;height:44px;border-radius:10px;
  background:var(--purple);color:#fff;text-decoration:none;
  font-family:'UnifrakturMaguntia',var(--head);font-size:1.35rem;line-height:1;
  padding-bottom:3px;
}
.tb-where{
  flex:1;min-width:0;font-size:.86rem;font-weight:500;color:var(--muted);
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.tb-where b{display:block;font-family:var(--head);font-weight:700;font-size:.98rem;color:var(--plum)}

/* ---------- BOTTOM BAR : the only navigation they need ---------- */
.botbar{
  position:fixed;bottom:0;left:0;right:0;z-index:60;
  background:var(--card);border-top:1px solid var(--rule);
  padding:.5rem .6rem calc(.5rem + env(safe-area-inset-bottom,0px));
  display:flex;align-items:center;gap:.5rem;
}
.bb-btn{
  display:flex;align-items:center;justify-content:center;gap:.35rem;
  height:48px;padding:0 .9rem;border-radius:11px;text-decoration:none;
  font-family:var(--head);font-weight:700;font-size:.9rem;border:1.5px solid var(--purple-bd);
  color:var(--purple);background:var(--card);
}
.bb-btn.next{background:var(--gold);border-color:var(--gold);color:#3A2600;flex:1}
.bb-btn.dim{opacity:.38;pointer-events:none}
.bb-mid{
  flex:1;text-align:center;font-size:.78rem;color:var(--muted);
  font-weight:500;line-height:1.3;
}
.bb-mid b{display:block;color:var(--plum);font-family:var(--head);font-size:.86rem}

/* ---------- PAGE HEADER ---------- */
.hero{background:var(--purple-lt);border-bottom:1px solid var(--purple-bd);padding:1.5rem 0 1.35rem;margin-bottom:1.4rem}
.hero .kicker{font-size:.82rem;font-weight:600;color:var(--purple);margin-bottom:.3rem}
.hero h1{margin-bottom:.4rem}
.hero p{color:#4A4160;margin-bottom:0;font-size:.97rem}
.hero .mins{
  display:inline-block;margin-top:.7rem;background:var(--card);border:1px solid var(--purple-bd);
  border-radius:99px;padding:.22rem .75rem;font-size:.82rem;font-weight:600;color:var(--purple)
}
.hero.gold{background:var(--gold-lt);border-bottom-color:var(--gold-bd)}
.hero.gold .kicker,.hero.gold .mins{color:var(--gold-dk)}
.hero.gold .mins{border-color:var(--gold-bd)}

/* ---------- STEP RAIL ---------- */
.steps{position:relative;padding-left:1.9rem;margin-bottom:1.6rem}
.steps::before{
  content:"";position:absolute;left:.62rem;top:.9rem;bottom:.9rem;
  width:3px;background:var(--purple-lt);border-radius:2px;
}
.step{position:relative;margin-bottom:1.1rem}
.step::before{
  content:attr(data-n);
  position:absolute;left:-1.9rem;top:.55rem;
  width:1.65rem;height:1.65rem;border-radius:50%;
  background:var(--card);border:2.5px solid var(--purple-bd);
  color:var(--purple);font-family:var(--head);font-weight:700;font-size:.8rem;
  display:flex;align-items:center;justify-content:center;z-index:2;
}
.step.done::before{content:"✓";background:var(--gold);border-color:var(--gold);color:#3A2600}
.step-body{
  background:var(--card);border:1px solid var(--rule);border-radius:14px;
  padding:1.05rem 1.05rem .95rem;
}
.step.done .step-body{border-color:var(--gold-bd);background:#FFFDF8}
.step h3{margin-bottom:.15rem}
.step .why{font-size:.82rem;color:var(--muted);font-weight:500;margin-bottom:.7rem}
.step > .step-body > *:last-child{margin-bottom:0}

.donebtn{
  display:flex;align-items:center;justify-content:center;gap:.45rem;width:100%;
  margin-top:.9rem;min-height:48px;border-radius:11px;cursor:pointer;
  border:1.5px solid var(--purple-bd);background:var(--purple-lt);color:var(--purple);
  font-family:var(--head);font-weight:700;font-size:.92rem;
}
.step.done .donebtn{background:var(--ok-lt);border-color:#A9D6C2;color:var(--ok)}

/* ---------- VIDEO ---------- */
.video{margin:.9rem 0 .6rem}
.vframe{
  position:relative;width:100%;aspect-ratio:16/9;border-radius:12px;overflow:hidden;
  background:var(--plum);border:1px solid var(--rule);cursor:pointer;display:block;
  padding:0;border:0;
}
.vframe img{width:100%;height:100%;object-fit:cover;display:block}
.vframe iframe{width:100%;height:100%;border:0;display:block}
.vframe .play{
  position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(180deg,rgba(58,29,77,.12),rgba(58,29,77,.55));
}
.vframe .play span{
  width:64px;height:64px;border-radius:50%;background:var(--gold);
  display:flex;align-items:center;justify-content:center;
  font-size:1.5rem;color:#3A2600;padding-left:5px;
  box-shadow:0 4px 16px rgba(0,0,0,.3);
}
.vmeta{font-size:.82rem;color:var(--muted);margin-top:.5rem;line-height:1.5}
.vmeta b{color:var(--plum);font-family:var(--head);font-size:.88rem;display:block}

/* ---------- CALLOUTS ---------- */
.note{border-radius:12px;padding:.85rem 1rem;margin:0 0 .9rem;font-size:.95rem;border:1px solid}
.note:last-child{margin-bottom:0}
.note.tip{background:var(--gold-lt);border-color:var(--gold-bd)}
.note.key{background:var(--purple-lt);border-color:var(--purple-bd)}
.note.say{background:var(--ok-lt);border-color:#A9D6C2}
.note b{color:var(--plum)}

/* ---------- DECODE TABLE ---------- */
.decode{width:100%;border-collapse:collapse;margin:.6rem 0 .9rem;font-size:.94rem;
  border:1px solid var(--rule);border-radius:12px;overflow:hidden}
.decode th{
  background:var(--purple-lt);color:var(--purple);text-align:left;
  font-family:var(--head);font-size:.76rem;font-weight:700;padding:.5rem .7rem;
}
.decode td{padding:.55rem .7rem;border-top:1px solid var(--rule);vertical-align:top}
.decode tr td:first-child{color:var(--muted);width:47%}
.heard{font-weight:600;color:var(--plum)}
.gloss{display:block;font-size:.78rem;color:var(--muted)}

/* ---------- LANGUAGE-SPECIFIC BLOCK ---------- */
.l1{border:2px dashed var(--gold-bd);border-radius:13px;padding:.95rem 1rem;margin:.9rem 0;background:#FFFDF8}
.l1 .l1-tag{font-family:var(--head);font-weight:700;font-size:.78rem;color:var(--gold-dk);margin-bottom:.35rem}
.l1[hidden]{display:none}
.l1switch{display:flex;gap:.45rem;margin:.7rem 0 0;flex-wrap:wrap}
.l1switch button{
  flex:1;min-width:90px;min-height:46px;border-radius:10px;cursor:pointer;
  border:1.5px solid var(--purple-bd);background:var(--card);color:var(--purple);
  font-family:var(--head);font-weight:700;font-size:.88rem;
}
.l1switch button[aria-pressed="true"]{background:var(--purple);border-color:var(--purple);color:#fff}

/* ---------- WRITE-YOUR-OWN BOX ---------- */
.notebox{margin:.8rem 0}
.notebox label{display:block;font-family:var(--head);font-weight:700;font-size:.86rem;color:var(--plum);margin-bottom:.35rem}
.notebox textarea{
  width:100%;min-height:5.5rem;padding:.7rem .8rem;border-radius:11px;resize:vertical;
  border:1.5px solid var(--purple-bd);background:var(--card);color:var(--ink);
  font-family:var(--body);font-size:1rem;line-height:1.55;
}
.notebox textarea::placeholder{color:#A79FBA}
.nb-status{display:block;font-size:.76rem;color:var(--ok);margin-top:.3rem;min-height:1rem;font-weight:500}

/* ---------- STEP WITHOUT A DONE BUTTON (teacher pages) ---------- */
.steps.plain::before{background:var(--gold-lt)}
.steps.plain .step::before{border-color:var(--gold-bd);color:var(--gold-dk)}

/* ---------- SELF-CHECK QUIZ ---------- */
.quiz{margin:.7rem 0}
.quiz .q{font-weight:600;margin-bottom:.5rem}
.quiz .opts{display:flex;flex-direction:column;gap:.45rem}
.quiz button{
  text-align:left;min-height:48px;padding:.6rem .85rem;border-radius:10px;cursor:pointer;
  border:1.5px solid var(--rule);background:var(--card);color:var(--ink);
  font-family:var(--body);font-size:.95rem;
}
.quiz button.right{background:var(--ok-lt);border-color:#A9D6C2;color:var(--ok);font-weight:600}
.quiz button.wrong{background:#FDECEA;border-color:#F0B4A8;color:#A33A22}
.quiz .fb{font-size:.88rem;color:var(--muted);margin-top:.5rem;min-height:1.2rem}

/* ---------- CARDS / LISTS ---------- */
.cards{display:flex;flex-direction:column;gap:.7rem;margin-bottom:1.4rem}
.card{
  display:block;background:var(--card);border:1px solid var(--rule);border-left:5px solid var(--purple);
  border-radius:13px;padding:.9rem 1rem;text-decoration:none;color:inherit;
}
.card.workshop{border-left-color:var(--gold)}
.card.locked{opacity:.55;border-left-color:var(--rule)}
.card .c-top{display:flex;align-items:baseline;justify-content:space-between;gap:.6rem}
.card .c-kick{font-family:var(--head);font-weight:700;font-size:.75rem;color:var(--purple)}
.card.workshop .c-kick{color:var(--gold-dk)}
.card .c-time{font-size:.78rem;color:var(--muted);white-space:nowrap}
.card h3{margin:.1rem 0 .2rem;font-size:1.02rem}
.card p{font-size:.88rem;color:var(--muted);margin:0}
.card .c-state{
  display:inline-block;margin-top:.5rem;font-size:.75rem;font-weight:700;font-family:var(--head);
  background:var(--ok-lt);color:var(--ok);border-radius:99px;padding:.15rem .6rem;
}

.sechd{font-family:var(--head);font-weight:700;font-size:.8rem;color:var(--muted);
  margin:1.6rem 0 .7rem;padding-bottom:.4rem;border-bottom:1px solid var(--rule)}

/* ---------- BIG BUTTONS ---------- */
.btn{
  display:flex;align-items:center;justify-content:center;gap:.4rem;width:100%;
  min-height:54px;border-radius:13px;text-decoration:none;margin-bottom:.6rem;cursor:pointer;
  font-family:var(--head);font-weight:700;font-size:1rem;border:1.5px solid transparent;
}
.btn.gold{background:var(--gold);color:#3A2600}
.btn.purple{background:var(--purple);color:#fff}
.btn.ghost{background:var(--card);border-color:var(--purple-bd);color:var(--purple)}

/* ---------- RESUME ---------- */
.resume{background:var(--gold-lt);border:1px solid var(--gold-bd);border-radius:14px;padding:1rem;margin-bottom:1.3rem}
.resume .r-kick{font-family:var(--head);font-weight:700;font-size:.76rem;color:var(--gold-dk);margin-bottom:.15rem}
.resume h3{margin-bottom:.6rem;font-size:1.05rem}
.resume[hidden]{display:none}

/* ---------- PROGRESS ---------- */
.pbar{height:9px;border-radius:99px;background:var(--purple-lt);overflow:hidden;margin:.5rem 0 .3rem}
.pbar i{display:block;height:100%;background:var(--gold);border-radius:99px;transition:width .35s ease}
.pnote{font-size:.8rem;color:var(--muted)}

footer{border-top:1px solid var(--rule);margin-top:2rem;padding:1.3rem 0 1.6rem;font-size:.8rem;color:var(--muted)}
footer .mono{font-family:'UnifrakturMaguntia',var(--head);font-size:1.4rem;color:var(--purple);line-height:1}

@media (min-width:640px){
  body{font-size:17.5px}
  h1{font-size:1.95rem}
  .cards{gap:.8rem}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important;scroll-behavior:auto!important}}