/* =========================================================
   StarWebX Student Portal — "Instrument panel" sidebar.
   Blueprint system: cobalt on ink, hairlines, tabular numerals.
   ========================================================= */
:root{ --sb-w:248px; --sb-w-collapsed:76px; --rail:#0a0e1c; }

/* Neumorphic: one plain colour across the whole page; depth comes from soft
   dual shadows (light top-left, shadow bottom-right), not fills or borders. */
body.portal{
  --nm-bg:#e8ecf2; --nm-hi:rgba(255,255,255,.95); --nm-sh:rgba(70,92,128,.22);
  --nm-raise:-3px -3px 7px var(--nm-hi),4px 4px 10px var(--nm-sh);
  --nm-press:inset -3px -3px 6px var(--nm-hi),inset 4px 4px 9px var(--nm-sh);
  --paper:#e8ecf2; --paper-2:#e0e5ee; --card:#e8ecf2;
  --line:rgba(70,92,128,.10); --line-2:rgba(70,92,128,.18);
  --shadow:-6px -6px 14px var(--nm-hi),8px 8px 18px var(--nm-sh);
  --shadow-sm:-3px -3px 7px var(--nm-hi),4px 4px 10px var(--nm-sh);
  background:#e8ecf2;
}

/* ---------- Sidebar shell — soft neumorphic (plain colour + 3D depth) ---------- */
.sidebar{position:fixed;top:0;left:0;bottom:0;width:var(--sb-w);z-index:60;
  display:flex;flex-direction:column;color:#525b70;
  --nm-bg:#e8ecf2;--nm-hi:rgba(255,255,255,.95);--nm-sh:rgba(70,92,128,.22);
  --nm-raise:-3px -3px 7px var(--nm-hi),4px 4px 10px var(--nm-sh);
  --nm-press:inset -3px -3px 6px var(--nm-hi),inset 4px 4px 9px var(--nm-sh);
  background:var(--nm-bg);
  box-shadow:9px 0 26px -18px rgba(70,92,128,.55);
  transition:width .3s var(--ease),transform .3s var(--ease)}

/* brand — embossed neumorphic tile */
.rail-brand{display:flex;align-items:center;gap:13px;padding:24px 20px 18px;overflow:hidden}
.rail-brand .mark{position:relative;width:42px;height:42px;flex:0 0 auto;border-radius:13px;
  background:var(--nm-bg);color:var(--accent);
  display:flex;align-items:center;justify-content:center;font-family:var(--font-display);font-weight:600;
  font-size:.86rem;letter-spacing:.02em;box-shadow:var(--nm-raise)}
.rail-brand .mark i{display:none}
.rail-brand .wm{white-space:nowrap;line-height:1.15}
.rail-brand .wm b{display:block;color:#2a3142;font-family:var(--font-display);font-size:1.06rem;font-weight:500;letter-spacing:-.01em}
.rail-brand .wm em{font-style:normal;color:#8a93a8;font-size:.7rem;letter-spacing:.16em;text-transform:uppercase}

/* XP — recessed (inset) well */
.rail-xp{margin:6px 16px 16px;padding:14px 16px;border-radius:16px;background:var(--nm-bg);
  box-shadow:var(--nm-press);display:flex;align-items:center;gap:12px}
.rxp-ring{display:none;width:46px;height:46px;flex:0 0 auto;border-radius:50%;
  background:conic-gradient(var(--accent) calc(var(--p)*1%),#d3dae8 0);
  position:relative;place-items:center}
.rxp-ring::after{content:"";position:absolute;inset:5px;border-radius:50%;background:var(--nm-bg)}
.rxp-ring span{position:relative;z-index:1;font-family:var(--font-display);font-size:.8rem;color:#2a3142;font-weight:500}
.rxp-ring span i{font-style:normal;font-size:.6rem;color:#8a93a8}
.rxp-bar{flex:1;min-width:0}
.rxp-head{display:flex;align-items:baseline;justify-content:space-between;margin-bottom:8px}
.rxp-head span{font-size:.66rem;letter-spacing:.18em;text-transform:uppercase;color:#8a93a8}
.rxp-head b{font-family:var(--font-display);font-size:1.15rem;color:#2a3142;font-weight:500;font-variant-numeric:tabular-nums}
.meter{height:8px;border-radius:999px;background:#dde3ec;overflow:hidden;
  box-shadow:inset 1px 1px 2px var(--nm-sh)}
.meter span{display:block;height:100%;border-radius:999px;background:var(--accent);transition:width .8s var(--ease)}
.rxp-bar small{display:block;margin-top:7px;font-size:.7rem;color:#9aa1b2;letter-spacing:.02em;font-variant-numeric:tabular-nums}

/* nav */
.rail-nav{display:flex;flex-direction:column;flex:1;padding:6px 14px 14px;overflow-y:auto;overflow-x:hidden}
.rail-nav::-webkit-scrollbar{width:0}
.grp{margin:16px 12px 7px;display:flex;align-items:center;gap:10px}
.grp span{font-size:.62rem;letter-spacing:.2em;text-transform:uppercase;color:#9098ab;font-weight:600}
.grp::after{content:"";flex:1;height:1px;background:rgba(70,92,128,.14)}
.nav-item{position:relative;display:flex;align-items:center;gap:13px;padding:11px 13px;border-radius:12px;
  color:#525c70;font-weight:500;font-size:.93rem;white-space:nowrap;background:transparent;
  transition:box-shadow .22s var(--ease),color .2s,background .2s}
.nav-item .nx{font-family:var(--font-display);font-size:.66rem;color:#a4abbd;font-variant-numeric:tabular-nums;
  width:16px;text-align:center;flex:0 0 auto;transition:color .2s}
.nav-item svg{width:20px;height:20px;flex:0 0 auto;stroke:currentColor;transition:stroke .2s}
.nav-item .nlabel{flex:1;overflow:hidden;text-overflow:ellipsis}
.nav-item:hover{color:#22283a;box-shadow:var(--nm-raise)}
.nav-item:hover .nx{color:#6b7488}
.nav-item.on{color:var(--accent);box-shadow:var(--nm-press)}
.nav-item.on .nx{color:var(--accent)}
.nav-item.on svg{stroke:var(--accent)}
/* staggered entrance */
@keyframes railIn{from{opacity:0;transform:translateX(-8px)}to{opacity:1;transform:none}}
.nav-item{animation:railIn .42s var(--ease) both;animation-delay:calc(var(--d) * .045s)}

/* footer: profile + logout */
.rail-foot{padding:14px;border-top:1px solid rgba(70,92,128,.12)}
.rf-user{display:flex;align-items:center;gap:6px;padding:4px;border-radius:13px}
.rf-id{display:flex;align-items:center;gap:11px;flex:1;min-width:0;padding:7px;border-radius:11px;
  color:inherit;transition:box-shadow .22s var(--ease)}
.rf-id:hover{box-shadow:var(--nm-raise)}
.ava{width:38px;height:38px;flex:0 0 auto;border-radius:12px;color:var(--accent);
  display:flex;align-items:center;justify-content:center;font-family:var(--font-display);font-weight:600;font-size:.95rem;
  background:var(--nm-bg);box-shadow:var(--nm-raise)}
.ava[data-on="1"]{background:var(--accent);color:#fff;box-shadow:-2px -2px 5px var(--nm-hi),3px 3px 8px rgba(35,54,224,.4)}
.rf-meta{min-width:0;flex:1;white-space:nowrap;overflow:hidden}
.rf-meta b{display:block;color:#2a3142;font-size:.88rem;font-weight:500;text-overflow:ellipsis;overflow:hidden}
.rf-meta small{display:block;color:#9098ab;font-size:.72rem;text-overflow:ellipsis;overflow:hidden}
.rf-out{flex:0 0 auto;width:36px;height:36px;border-radius:10px;display:flex;align-items:center;justify-content:center;
  color:#8a93a8;background:var(--nm-bg);transition:box-shadow .22s var(--ease),color .2s}
.rf-out svg{width:18px;height:18px}
.rf-out:hover{box-shadow:var(--nm-raise);color:var(--accent)}

/* ---------- Content column ---------- */
.sb-main{margin-left:var(--sb-w);min-height:100vh;display:flex;flex-direction:column;
  transition:margin-left .3s var(--ease)}
.sb-top{position:sticky;top:0;z-index:40;display:flex;align-items:center;gap:14px;height:64px;padding:0 24px;
  background:rgba(230,238,241,.86);backdrop-filter:saturate(150%) blur(14px);border-bottom:1px solid var(--line)}
.sb-toggle{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:10px;
  border:1px solid var(--line-2);background:var(--card);cursor:pointer;color:var(--ink);transition:border-color .2s,color .2s}
.sb-toggle:hover{border-color:var(--accent);color:var(--accent)}
.sb-toggle svg{width:20px;height:20px}
.sb-page{font-family:var(--font-display);font-weight:500;font-size:1.02rem;color:var(--ink);letter-spacing:-.01em}
.sb-top .spacer{flex:1}
.sb-top .who{font-size:.82rem;color:var(--muted);white-space:nowrap;font-weight:500}
.sb-out-btn{display:inline-flex;align-items:center;gap:7px;height:36px;padding:0 14px;border-radius:999px;
  border:1px solid var(--line-2);background:var(--card);color:var(--ink);font-weight:600;font-size:.82rem;
  white-space:nowrap;transition:border-color .2s,color .2s,background .2s}
.sb-out-btn svg{width:16px;height:16px}
.sb-out-btn:hover{border-color:var(--red);color:var(--red)}
.sb-out-btn.signin{background:var(--accent);border-color:var(--accent);color:#fff}
.sb-out-btn.signin:hover{background:var(--accent-deep);border-color:var(--accent-deep);color:#fff}
@media(max-width:560px){ .sb-out-btn span{display:none} .sb-out-btn{padding:0;width:36px;justify-content:center} }

/* ---------- Auth (sign-in / set password) ---------- */
.auth-page{min-height:100vh;display:flex}
.auth-wrap{margin:auto;width:100%;max-width:420px;padding:32px 22px}
.auth-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:38px 34px}
.auth-brand{display:flex;align-items:center;gap:12px;margin-bottom:26px}
.auth-brand .logo{width:42px;height:42px;border-radius:12px;background:linear-gradient(150deg,var(--accent),#3b18c4);
  color:#fff;display:flex;align-items:center;justify-content:center;font-family:var(--font-display);font-weight:600}
.auth-brand b{display:block;font-family:var(--font-display);font-size:1.1rem;color:var(--ink);font-weight:500;letter-spacing:-.01em}
.auth-brand small{color:var(--muted);font-size:.72rem;letter-spacing:.06em;text-transform:uppercase}
.auth-card h1{font-family:var(--font-display);font-weight:400;font-size:1.7rem;letter-spacing:-.02em;color:var(--ink)}
.auth-sub{color:var(--muted);font-size:.92rem;margin:6px 0 22px}
.auth-form .field{margin-bottom:16px}
.field-link{float:right;font-weight:500;font-size:.78rem;color:var(--accent);letter-spacing:0}
.auth-form label{display:block;font-weight:600;font-size:.8rem;margin-bottom:7px;color:var(--ink)}
.auth-form input{width:100%;padding:13px 15px;border:1px solid var(--line-2);border-radius:var(--radius-sm);
  font-family:inherit;font-size:.96rem;background:#fff;color:var(--text)}
.auth-form input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-tint)}
.auth-form input:disabled{background:var(--paper-2);color:var(--muted)}
.auth-form .btn.block{display:flex;width:100%;margin-top:6px}
.auth-hint{margin-top:16px;font-size:.82rem;color:var(--muted);line-height:1.5;
  background:var(--paper-2);border-radius:var(--radius-sm);padding:11px 13px}
.auth-hint b{color:var(--ink)}
.auth-alt{margin-top:18px;font-size:.9rem;color:var(--muted)}
.auth-alt a{color:var(--accent);font-weight:600}
.auth-foot{text-align:center;margin-top:18px;font-size:.85rem}
.auth-foot a{color:var(--muted)}

.pmain{flex:1;padding:14px 0 36px}
.pmain > .container{max-width:980px}
.pfoot{border-top:1px solid var(--line);color:var(--muted);padding:24px 0;font-size:.84rem}
.pfoot .container{display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;max-width:980px}
.pfoot a{color:var(--accent)}

/* ---------- Collapsed (desktop icon rail) ---------- */
html.sb-collapsed .sidebar{width:var(--sb-w-collapsed)}
html.sb-collapsed .sb-main{margin-left:var(--sb-w-collapsed)}
html.sb-collapsed .rail-brand .wm,
html.sb-collapsed .nav-item .nlabel,
html.sb-collapsed .nav-item .nx,
html.sb-collapsed .grp span,
html.sb-collapsed .rf-meta,
html.sb-collapsed .rf-out,
html.sb-collapsed .rxp-bar{display:none}
html.sb-collapsed .rail-brand{justify-content:center;padding:22px 0 18px}
html.sb-collapsed .rail-xp{justify-content:center;padding:10px;margin:4px 14px 12px}
html.sb-collapsed .rxp-ring{display:grid}
html.sb-collapsed .nav-item{justify-content:center;gap:0;padding:11px 0}
html.sb-collapsed .nav-item::before{left:-14px}
html.sb-collapsed .grp{margin:14px 14px 6px}
html.sb-collapsed .grp::after{display:none}
html.sb-collapsed .rf-user{justify-content:center;gap:0;padding:6px 0}
html.sb-collapsed .rf-id{justify-content:center;gap:0;padding:6px 0}

/* ---------- Mobile drawer ---------- */
.sb-backdrop{position:fixed;inset:0;background:rgba(10,14,28,.5);backdrop-filter:blur(2px);z-index:55;
  opacity:0;visibility:hidden;transition:opacity .25s}
html.sb-open .sb-backdrop{opacity:1;visibility:visible}
@media(max-width:760px){
  .sidebar{transform:translateX(-100%);width:var(--sb-w);box-shadow:var(--shadow)}
  .sb-main{margin-left:0}
  html.sb-open .sidebar{transform:none}
  html.sb-collapsed .sidebar{width:var(--sb-w);transform:translateX(-100%)}
  html.sb-collapsed.sb-open .sidebar{transform:none}
  html.sb-collapsed .sb-main{margin-left:0}
  html.sb-collapsed .rail-brand .wm,html.sb-collapsed .nav-item .nlabel,html.sb-collapsed .nav-item .nx,
  html.sb-collapsed .grp span,html.sb-collapsed .rf-meta,html.sb-collapsed .rf-out,html.sb-collapsed .rxp-bar{display:block}
  html.sb-collapsed .rxp-ring{display:none}
  html.sb-collapsed .nav-item,html.sb-collapsed .rf-user,html.sb-collapsed .rf-id{justify-content:flex-start;gap:13px;padding:10px 6px}
  html.sb-collapsed .rail-xp{justify-content:flex-start}
  html.sb-collapsed .grp::after{display:block}
}
@media (prefers-reduced-motion:reduce){ .nav-item{animation:none} }

/* ---------- Headings ---------- */
/* .phead is a <section>; style.css gives <section> 104px padding — reset it here. */
.phead{padding:0;margin-bottom:14px}
.phead h2{font-size:clamp(1.9rem,3.6vw,2.8rem);font-weight:380;letter-spacing:-.03em;margin:2px 0 4px}
.phead .lead{color:var(--muted);font-size:1.06rem;max-width:54ch}
.phead.chap .eyebrow a{color:var(--accent)}
.rowhead{font-size:1.4rem;font-weight:500;letter-spacing:-.01em;margin:8px 0 18px}

/* ---------- Cards / identify ---------- */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:28px 30px;box-shadow:var(--shadow-sm);margin-bottom:30px}
.identify h3{font-size:1.3rem;font-weight:500;margin-bottom:6px}
.identify-row{display:flex;gap:12px;margin-top:16px;flex-wrap:wrap}
.identify-row input{flex:1;min-width:220px;padding:13px 15px;border:1px solid var(--line-2);
  border-radius:var(--radius-sm);font-family:inherit;font-size:.96rem}
.identify-row input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-tint)}

/* ---------- XP bar ---------- */
.xp-bar{height:10px;background:var(--paper-2);border:1px solid var(--line);border-radius:999px;
  overflow:hidden;margin:6px 0 8px}
.xp-bar span{display:block;height:100%;background:linear-gradient(90deg,var(--accent),var(--cyan));
  transition:width .6s var(--ease)}

/* ---------- Week list (dashboard) ---------- */
.week-list{display:grid;gap:0;margin-bottom:20px}
.wk-card{display:grid;grid-template-columns:auto 1fr;gap:24px;align-items:center;
  padding:22px 4px;border-top:1px solid var(--line);transition:padding-left .35s var(--ease)}
.week-list .wk-card:last-child{border-bottom:1px solid var(--line)}
.wk-card:hover{padding-left:10px}
.wk-card .wk-no{font-family:var(--font-display);font-weight:300;font-size:2.4rem;color:var(--ink);
  line-height:1;font-variant-numeric:tabular-nums}
.wk-card:hover .wk-no{color:var(--accent)}
.wk-body h4{font-size:1.2rem;font-weight:500;letter-spacing:-.01em;margin-bottom:3px}
.wk-body p{color:var(--text);font-size:.96rem;margin-bottom:4px}
.wk-body small{color:var(--muted);font-size:.8rem;letter-spacing:.01em}

/* ---------- Course outline ---------- */
.week-block{padding:34px 0;border-top:1px solid var(--line)}
.week-head{margin-bottom:20px}
.week-tag{font-family:var(--font-body);font-weight:600;font-size:.7rem;letter-spacing:.22em;
  text-transform:uppercase;color:var(--accent)}
.week-head h3{font-size:1.7rem;font-weight:400;letter-spacing:-.02em;margin:8px 0 8px}
.week-head p{color:var(--muted);max-width:70ch;font-size:.98rem}
.week-head .proj{display:inline-block;margin-top:10px;font-size:.8rem;color:var(--ink);
  border:1px solid var(--line-2);border-radius:999px;padding:4px 12px}
.locked-week .week-head{opacity:.66}

/* week schedule meta */
.week-meta{display:flex;flex-wrap:wrap;gap:8px;margin:14px 0 18px}
.wm-pill{font-size:.76rem;font-weight:500;padding:5px 12px;border-radius:999px;border:1px solid var(--line-2);
  color:var(--text);background:var(--card)}
.wm-pill.early{color:var(--accent-deep);background:var(--accent-tint);border-color:transparent}
.wm-pill.due{color:var(--ink)}
.wm-pill.proj{color:var(--muted)}

/* locked week block */
.week-locked{display:flex;align-items:center;gap:14px;padding:18px 20px;border:1px dashed var(--line-2);
  border-radius:var(--radius);background:var(--paper-2);color:var(--muted)}
.week-locked svg{width:26px;height:26px;flex:0 0 auto;color:var(--muted)}
.week-locked b{display:block;color:var(--ink);font-family:var(--font-display);font-weight:500;font-size:1.02rem}
.week-locked span{font-size:.86rem}

/* assignment deadlines */
.deadlines{display:flex;flex-wrap:wrap;gap:10px;margin:0 0 24px}
.dl{font-size:.82rem;color:var(--muted);border:1px solid var(--line);border-radius:var(--radius-sm);
  padding:9px 13px;background:var(--card)}
.dl b{color:var(--ink);font-weight:600}
.dl.active{border-color:var(--accent);background:var(--accent-tint)}
.dl.active b{color:var(--accent-deep)}
.dl.over{opacity:.7}
/* ---------- Chapter stepper (sequential path) ---------- */
.ch-steps{list-style:none;margin:0;padding:0;max-width:560px}
.step{position:relative;padding-left:42px}
.step::before{content:"";position:absolute;left:18px;top:36px;bottom:-2px;width:2px;background:var(--line-2)}
.step:last-child::before{display:none}
.step-done::before{background:var(--green)}
.step-dot{position:absolute;left:5px;top:9px;width:28px;height:28px;border-radius:50%;z-index:1;
  display:flex;align-items:center;justify-content:center;font-family:var(--font-display);font-size:.8rem;font-weight:600;
  background:var(--card);color:var(--muted);box-shadow:var(--nm-press)}
.step-dot svg{width:15px;height:15px}
.step-done .step-dot{background:var(--green);color:#fff;box-shadow:-2px -2px 4px var(--nm-hi),2px 2px 5px rgba(47,125,80,.45)}
.step-current .step-dot{background:var(--accent);color:#fff;box-shadow:-2px -2px 4px var(--nm-hi),2px 2px 6px rgba(35,54,224,.5)}
.step-row{display:flex;align-items:center;gap:12px;padding:10px 14px;border-radius:13px;margin-bottom:10px;
  color:inherit;transition:box-shadow .2s var(--ease),transform .2s var(--ease)}
a.step-row:hover{box-shadow:var(--nm-raise);transform:translateX(2px)}
.step-text{flex:1;min-width:0;display:flex;flex-direction:column;gap:1px}
.step-name{font-weight:500;color:var(--ink);font-size:1rem}
.step-current .step-name{color:var(--accent)}
.step-locked .step-name{color:var(--muted)}
.step-tag{font-size:.74rem;color:var(--muted)}
.step-done .step-tag{color:var(--green)}
.step-current .step-tag{color:var(--accent)}
.step-score{font-family:var(--font-display);font-weight:500;font-size:.84rem;color:var(--green);flex:0 0 auto}
.step-arrow{width:18px;height:18px;color:var(--muted);flex:0 0 auto;transition:transform .2s,color .2s}
a.step-row:hover .step-arrow{transform:translateX(3px);color:var(--accent)}
.step-locked .step-row{cursor:default}

/* streak stat */
.stat.streak .n{display:flex;align-items:center;gap:7px}
.stat.streak .flame{font-size:1.4rem;line-height:1}
.badge{font-size:.7rem;font-weight:600;padding:3px 10px;border-radius:999px;
  background:var(--accent-tint);color:var(--accent-deep)}
.badge.ok{background:var(--green-tint);color:var(--green)}
.badge.mid{background:var(--warn-tint);color:var(--warn)}
.badge.soon{background:#eceff5;color:var(--muted)}

/* ---------- Lesson ---------- */
.lesson{max-width:760px}
.lesson-img{margin:0 0 26px;border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;background:var(--paper-2);box-shadow:var(--shadow-sm)}
.lesson-img img{width:100%;display:block;object-fit:contain;max-height:520px;margin:0 auto;background:#fff}
.lesson-body{font-size:1.08rem;line-height:1.72;color:var(--text);margin-bottom:28px;overflow-wrap:break-word}
.lesson-body a{overflow-wrap:anywhere}
.lesson-body > *:first-child{margin-top:0}
.lesson-body p{margin:0 0 16px}
.lesson-body h3{font-family:var(--font-display);font-weight:500;font-size:1.4rem;letter-spacing:-.01em;margin:26px 0 10px;color:var(--ink)}
.lesson-body h4{font-family:var(--font-display);font-weight:500;font-size:1.12rem;margin:22px 0 8px;color:var(--ink)}
.lesson-body h5{font-weight:600;font-size:.95rem;margin:18px 0 6px;color:var(--ink)}
.lesson-body ul,.lesson-body ol{margin:0 0 16px;padding-left:24px}
.lesson-body li{margin:4px 0}
.lesson-body a{color:var(--accent);text-decoration:underline;text-underline-offset:2px}
.lesson-body code{font-family:'Space Grotesk',ui-monospace,Menlo,Consolas,monospace;font-size:.9em;
  background:var(--paper-2);border:1px solid var(--line);border-radius:5px;padding:1px 6px;color:var(--accent-deep)}
.code-wrap{position:relative;margin:0 0 18px}
.code-copy{position:absolute;top:8px;right:8px;z-index:1;font-family:var(--font-body);font-size:.72rem;
  font-weight:600;color:#cdd5ea;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);
  border-radius:6px;padding:4px 11px;cursor:pointer;transition:background .2s,color .2s,border-color .2s}
.code-copy:hover{background:rgba(255,255,255,.18);color:#fff}
.code-copy.done{color:#6ee79f;border-color:rgba(110,231,159,.6)}
.lesson-body .code-wrap pre.code{margin:0}
.lesson-body pre.code{margin:0 0 18px;padding:16px 18px;border-radius:var(--radius-sm);overflow:auto;
  background:var(--ink-deep);border:1px solid rgba(255,255,255,.08)}
.lesson-body pre.code code{display:block;background:none;border:0;padding:0;color:#cdd5ea;font-size:.86rem;
  line-height:1.6;white-space:pre;font-family:ui-monospace,Menlo,Consolas,monospace}
.table-wrap{overflow-x:auto;margin:0 0 18px}
.md-table{width:100%;border-collapse:collapse;font-size:.95rem;background:var(--card);
  border:1px solid var(--line);border-radius:var(--radius-sm);overflow:hidden}
.md-table th,.md-table td{text-align:left;padding:9px 13px;border-bottom:1px solid var(--line)}
.md-table th{background:var(--paper-2);font-weight:600;color:var(--ink)}
.md-table tr:last-child td{border-bottom:none}
.md-table code{background:var(--paper);font-size:.88em}

/* code-answer textarea */
.q-code{display:block;width:calc(100% - 28px);margin-left:28px;min-height:130px;resize:vertical;
  padding:13px 15px;border:1px solid var(--line-2);border-radius:var(--radius-sm);background:#fff;color:var(--ink);
  font-family:ui-monospace,Menlo,Consolas,monospace;font-size:.92rem;line-height:1.55;white-space:pre;tab-size:2}
.q-code:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-tint)}
.is-correct .q-code{border-color:var(--green)}
.is-wrong .q-code{border-color:var(--red)}
.video{position:relative;aspect-ratio:16/9;border-radius:var(--radius);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--shadow-sm);background:#000}
.video iframe{position:absolute;inset:0;width:100%;height:100%;border:0}

/* ---------- Assignment / quiz ---------- */
.assignment{max-width:760px;margin:40px 0 0;padding:36px 0 0;border-top:1px solid var(--line)}
.asg-head{display:flex;align-items:baseline;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-bottom:22px}
.asg-head h3{font-size:1.6rem;font-weight:400;letter-spacing:-.02em}
.asg-head .note{color:var(--muted);font-size:.9rem;max-width:46ch}
.score{font-size:1rem;color:var(--muted)}
.score b{font-family:var(--font-display);font-size:1.5rem;color:var(--ink);font-weight:500}
.score.perfect b{color:var(--green)}
.xp-earned{display:inline-block;margin-left:10px;color:var(--accent);font-weight:600;
  background:var(--accent-tint);border-radius:999px;padding:3px 12px;font-size:.82rem}

.quiz .q{padding:22px 0;border-top:1px solid var(--line)}
.quiz .q:first-child{border-top:none}
.q-head{display:grid;grid-template-columns:auto 1fr auto;gap:14px;align-items:start;margin-bottom:14px}
.q-n{font-family:var(--font-display);font-variant-numeric:tabular-nums;color:var(--accent);
  font-weight:500;line-height:1.5}
.q-text{font-weight:500;color:var(--ink);font-size:1.02rem;line-height:1.5}
.q-hint{display:block;font-style:normal;color:var(--muted);font-weight:400;font-size:.82rem;margin-top:2px}
.q-mark{font-weight:700;font-size:1.1rem}
.is-correct .q-mark{color:var(--green)}
.is-wrong .q-mark{color:var(--red)}

.opts{display:grid;gap:8px;padding-left:28px}
.opt{display:flex;align-items:center;gap:11px;padding:10px 14px;border:1px solid var(--line-2);
  border-radius:var(--radius-sm);cursor:pointer;transition:border-color .2s,background .2s;font-size:.96rem}
.opt:hover{border-color:var(--accent)}
.opt input{accent-color:var(--accent);width:17px;height:17px;flex:0 0 auto}
.q-input{margin-left:28px;width:calc(100% - 28px);padding:13px 15px;border:1px solid var(--line-2);
  border-radius:var(--radius-sm);font-family:var(--font-display);font-size:1rem;letter-spacing:.04em;
  background:#fff;color:var(--ink)}
.q-input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-tint)}
.q-answer{margin:12px 0 0 28px;font-size:.88rem;color:var(--muted)}
.q-answer b{font-family:var(--font-display);color:var(--green);letter-spacing:.02em}
.is-correct .opt input:checked + span,.is-correct .q-input{color:var(--green)}
.is-wrong .opt input:checked ~ span{color:var(--red)}
.is-wrong .q-input{color:var(--red);border-color:var(--red)}
.quiz-actions{display:flex;gap:14px;align-items:center;flex-wrap:wrap;margin-top:30px;
  padding-top:24px;border-top:1px solid var(--line)}

/* ---------- Progress accordion ---------- */
.acc-list{margin-top:26px;display:grid;gap:12px}
.acc{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-sm);
  overflow:hidden;transition:border-color .2s}
.acc[open]{border-color:var(--line-2)}
.acc.locked{background:var(--paper-2);box-shadow:none}
.acc-head{display:flex;align-items:center;gap:14px;padding:16px 18px;cursor:pointer;list-style:none;user-select:none}
.acc-head::-webkit-details-marker{display:none}
.acc.locked .acc-head{cursor:default}
.acc-no{font-family:var(--font-display);font-variant-numeric:tabular-nums;color:var(--accent);font-weight:500;
  font-size:.85rem;width:24px;flex:0 0 auto}
.acc.locked .acc-no{color:var(--muted)}
.acc-title{font-family:var(--font-display);font-weight:500;font-size:1.12rem;letter-spacing:-.01em;color:var(--ink)}
.acc.locked .acc-title{color:var(--muted)}
.acc-meta{margin-left:auto;font-size:.84rem;color:var(--muted);white-space:nowrap}
.acc-meta b{font-family:var(--font-display);color:var(--ink);font-weight:500}
.acc-chev{width:18px;height:18px;flex:0 0 auto;color:var(--muted);transition:transform .25s var(--ease)}
.acc[open] .acc-chev{transform:rotate(90deg)}
.acc.locked .acc-chev{display:none}
.acc .prog-rows{padding:2px 18px 12px}
.prog-row{display:grid;grid-template-columns:28px 1fr auto auto;gap:14px;align-items:center;
  padding:11px 4px;border-top:1px solid var(--line);font-size:.94rem}
.prog-row:last-child{border-bottom:1px solid var(--line)}
.prog-row .pn{font-family:var(--font-display);color:var(--accent);font-variant-numeric:tabular-nums;text-align:right}
.prog-row .pt{color:var(--ink);font-weight:500}
.prog-row.muted .pt{color:var(--muted);font-weight:400}
.prog-row .px{font-family:var(--font-display);color:var(--ink);font-variant-numeric:tabular-nums}

/* ---------- Project cards ---------- */
.proj-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.proj-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:24px;box-shadow:var(--shadow-sm);display:flex;flex-direction:column;gap:8px}
.proj-card{position:relative;overflow:hidden}
.pc-inner{display:flex;flex-direction:column;gap:8px;transition:filter .3s,opacity .3s}
.proj-card.locked .pc-inner{filter:blur(6px);opacity:.45;pointer-events:none;user-select:none}
.proj-card .pw{font-family:var(--font-body);font-weight:600;font-size:.7rem;letter-spacing:.18em;
  text-transform:uppercase;color:var(--accent)}
.proj-card h4{font-size:1.3rem;font-weight:500;letter-spacing:-.01em}
.proj-card p{color:var(--muted);font-size:.92rem}
.proj-card .pxp{margin-top:auto;font-family:var(--font-display);color:var(--ink);font-size:.9rem}
.pc-lock{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:8px;text-align:center;color:var(--muted);background:rgba(230,238,241,.35)}
.pc-lock svg{width:30px;height:30px;color:var(--accent)}
.pc-lock span{font-size:.84rem;font-weight:500;color:var(--ink)}

/* ---------- Certificate ---------- */
.cert{max-width:720px;margin:10px auto;background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius);box-shadow:var(--shadow);padding:8px}
.cert-inner{border:1.5px solid var(--accent);border-radius:10px;padding:48px 40px;text-align:center;
  background:radial-gradient(60% 80% at 50% 0%,rgba(35,54,224,.06),transparent 70%)}
.cert-inner .eyebrow{justify-content:center}
.cert-inner h2{font-family:var(--font-display);font-weight:400;font-size:2.2rem;letter-spacing:-.02em;margin:16px 0 6px}
.cert-name{font-family:var(--font-display);font-size:2.4rem;color:var(--accent);font-weight:500;
  margin:18px 0;border-bottom:1px solid var(--line);display:inline-block;padding:0 30px 8px}
.cert-meta{color:var(--muted);max-width:48ch;margin:0 auto}
.cert-lock{text-align:center;padding:40px}
.cert-lock .big{font-family:var(--font-display);font-size:3rem;color:var(--ink);font-weight:300}

/* ---------- Report form ---------- */
.report-form{max-width:640px}
.report-form .field{margin-bottom:18px}
.report-form label{display:block;font-weight:600;font-size:.82rem;margin-bottom:8px;color:var(--ink)}
.report-form input,.report-form select,.report-form textarea{width:100%;padding:13px 15px;
  border:1px solid var(--line-2);border-radius:var(--radius-sm);font-family:inherit;font-size:.96rem;background:#fff}
.report-form textarea{min-height:130px;resize:vertical}
.report-form input:focus,.report-form select:focus,.report-form textarea:focus{outline:none;
  border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-tint)}

/* ---------- Responsive content ---------- */
@media(max-width:760px){
  .chapter-grid,.proj-grid{grid-template-columns:1fr;gap:0}
  .proj-grid{gap:18px}
  .sb-page{display:none}
}
@media(max-width:560px){
  .sb-top .who{display:none}
  .xp-chip{font-size:.76rem;padding:5px 11px}
  .opts,.q-input,.q-answer{padding-left:0;margin-left:0;width:100%}
  .prog-row{grid-template-columns:24px 1fr auto;gap:10px}
  .prog-row .px{grid-column:2/4;text-align:left;color:var(--muted);font-size:.82rem}
}

/* ---------- Lesson: two-column with sticky aside ---------- */
@property --p{syntax:'<number>';initial-value:0;inherits:false}
.phead.tight{margin-bottom:6px}
.lesson-layout{display:grid;grid-template-columns:minmax(0,1fr) 290px;gap:44px;align-items:start}
.lesson-layout .lesson{max-width:none;min-width:0}
.lesson-aside{position:sticky;top:88px;display:flex;flex-direction:column;gap:14px;min-width:0}
.lesson,.lesson-body{min-width:0}
.lesson-body .code-wrap,.lesson-body pre.code,.lesson-body .table-wrap{max-width:100%}

/* reading-timer gauge — big ring while counting, compact row when done */
.timer-card{position:relative;display:flex;flex-direction:column;align-items:center;text-align:center;gap:12px;
  padding:22px 20px;border:1px solid var(--line);border-radius:var(--radius);
  background:var(--card);box-shadow:var(--shadow-sm);transition:border-color .35s,background .35s,padding .35s}
.timer-card.celebrate .tmr-ring{animation:ringpop .6s var(--ease)}
@keyframes ringpop{0%{transform:scale(1)}42%{transform:scale(1.14)}100%{transform:scale(1)}}
.confetti{position:absolute;left:50%;top:42px;width:7px;height:7px;border-radius:2px;pointer-events:none;z-index:2;
  animation:confettiBurst .85s var(--ease) forwards}
@keyframes confettiBurst{
  0%{transform:translate(-50%,0) scale(1);opacity:1}
  100%{transform:translate(calc(-50% + var(--x)),var(--y)) scale(.3);opacity:0}}
.xp-pop{position:absolute;left:50%;top:24px;transform:translateX(-50%);pointer-events:none;z-index:3;
  font-family:var(--font-display);font-weight:600;font-size:1.35rem;color:var(--accent);
  animation:xpPop 1.35s var(--ease) forwards}
@keyframes xpPop{
  0%{opacity:0;transform:translate(-50%,12px) scale(.8)}
  18%{opacity:1}
  100%{opacity:0;transform:translate(-50%,-42px) scale(1.12)}}
.tmr-ring{position:relative;width:110px;height:110px;flex:0 0 auto;border-radius:50%;color:var(--accent);
  display:grid;place-items:center;
  background:conic-gradient(var(--accent) calc(var(--p)*1%),var(--paper-2) 0);transition:--p .9s linear,width .35s,height .35s}
.tmr-ring::after{content:"";position:absolute;inset:8px;border-radius:50%;background:var(--card);
  box-shadow:inset 0 1px 3px rgba(15,21,38,.06)}
.tmr-count{position:relative;z-index:1;font-family:var(--font-display);font-variant-numeric:tabular-nums;
  font-size:1.85rem;font-weight:400;color:var(--ink);letter-spacing:.01em}
.tmr-body{min-width:0}
.tmr-title{display:block;font-family:var(--font-display);font-weight:500;color:var(--ink);font-size:1.06rem;letter-spacing:-.01em}
.tmr-sub{display:block;margin-top:4px;color:var(--muted);font-size:.84rem;line-height:1.45}
/* completed → small horizontal chip, no wasted space */
.timer-card.done{flex-direction:row;align-items:center;text-align:left;gap:13px;padding:14px 16px;
  border-color:var(--green);background:var(--green-tint)}
.timer-card.done .tmr-ring{width:42px;height:42px;color:var(--green);background:var(--green)}
.timer-card.done .tmr-ring::after{inset:3px;background:var(--green-tint)}
.timer-card.done .tmr-count{font-size:1.15rem;color:var(--green)}
.timer-card.done .tmr-title{color:var(--green);font-size:.98rem}
.timer-card.done .tmr-sub{font-size:.8rem}

.lesson-aside .btn.block{display:flex;width:100%}
.aside-note{text-align:center;color:var(--muted);font-size:.82rem;margin-top:-4px}
.aside-note b{color:var(--ink);font-family:var(--font-display);font-weight:500}
.aside-meta{display:flex;align-items:center;justify-content:space-between;padding:14px 16px;
  border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--paper-2)}
.aside-meta span{font-size:.7rem;letter-spacing:.16em;text-transform:uppercase;color:var(--muted)}
.aside-meta b{font-family:var(--font-display);font-size:1.1rem;color:var(--ink);font-weight:500;font-variant-numeric:tabular-nums}
.lesson-nav-card{padding:0;overflow:hidden}
.lesson-nav-card .card-h{padding:22px 22px 0;margin-bottom:8px}
.lesson-nav-card .note{padding:0 22px 16px;margin:0}
.lesson-nav-list{margin-top:0;gap:0}
.lesson-nav-list .acc{border:0;border-top:1px solid var(--line);border-radius:0;box-shadow:none;background:transparent}
.lesson-nav-list .acc:first-child{border-top:1px solid var(--line)}
.lesson-nav-list .acc-head{padding:14px 22px}
.lesson-nav-list .acc-title{font-size:1rem}
.lesson-nav-list .acc-meta{font-size:.78rem}
.lesson-nav-list .prog-rows{padding:0 22px 14px}
.lesson-nav-list .prog-row{grid-template-columns:24px minmax(0,1fr) auto;gap:10px;padding:10px 0}
.lesson-nav-list .prog-row:last-child{border-bottom:0}
.lesson-nav-list .prog-row .pt{min-width:0;font-size:.9rem}
.lesson-nav-list .prog-row .pt a{display:block}
.lesson-nav-list .prog-row .badge{justify-self:end}
.lesson-nav-list .prog-row.is-current .pn,
.lesson-nav-list .prog-row.is-current .pt{color:var(--accent)}
.lesson-nav-list .badge.current{background:var(--accent-tint);color:var(--accent)}

@media(max-width:900px){
  .lesson-layout{grid-template-columns:1fr;gap:26px}
  .lesson-aside{position:static;flex-direction:row;flex-wrap:wrap;align-items:center}
  .lesson-aside .timer-card{flex:1;min-width:240px;display:flex;align-items:center;gap:16px;text-align:left;padding:16px 18px}
  .lesson-aside .timer-card .tmr-ring{width:64px;height:64px;margin:0}
  .lesson-aside .timer-card .tmr-count{font-size:1.2rem}
  .lesson-aside .timer-card .tmr-body,.lesson-aside .timer-card>div:not(.tmr-ring){text-align:left}
  .lesson-aside .btn.block{width:auto}
  .lesson-nav-card{width:100%}
  .aside-note,.aside-meta{display:none}
}

/* ---------- Bonus activities ---------- */
.bonus-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.bonus-card{position:relative;display:flex;align-items:center;gap:16px;background:var(--card);
  border:1px solid var(--line);border-radius:var(--radius);padding:20px 22px;box-shadow:var(--shadow-sm);
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s}
.bonus-card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:var(--line-2)}
.bc-icon{width:46px;height:46px;flex:0 0 auto;border-radius:12px;display:grid;place-items:center;color:var(--accent);
  background:var(--accent-tint)}
.bc-icon svg{width:23px;height:23px}
.bc-body{flex:1;min-width:0}
.bc-body h4{font-size:1.08rem;font-weight:500;letter-spacing:-.01em;margin-bottom:2px}
.bc-body p{color:var(--muted);font-size:.86rem;line-height:1.45}
.bc-xp{font-family:var(--font-display);font-weight:500;font-size:1.15rem;color:var(--accent);
  font-variant-numeric:tabular-nums;flex:0 0 auto;white-space:nowrap}
.bc-xp i{font-style:normal;font-size:.62rem;color:var(--muted);margin-left:3px;letter-spacing:.06em}
.bonus-card .badge.soon{position:absolute;top:12px;right:14px}
@media(max-width:760px){ .bonus-grid{grid-template-columns:1fr} }
.soon-card{max-width:560px}
.soon-card p{color:var(--text);font-size:1rem;line-height:1.6}
.soon-card b{font-family:var(--font-display);color:var(--accent);font-weight:500}
.soon-badge{display:inline-block;margin-bottom:14px;font-size:.7rem;font-weight:600;letter-spacing:.14em;
  text-transform:uppercase;color:var(--accent);background:var(--accent-tint);border-radius:999px;padding:5px 14px}

/* ---------- Profile ---------- */
.profile-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;align-items:start}
.profile-grid .card{margin-bottom:0}
.card-h{font-size:1.15rem;font-weight:500;letter-spacing:-.01em;margin-bottom:16px;color:var(--ink)}
.profile-photo{display:flex;gap:18px;align-items:flex-start;flex-wrap:wrap}
.pp-frame{width:96px;height:96px;flex:0 0 auto;border-radius:14px;overflow:hidden;border:1px solid var(--line);
  background:var(--paper-2);display:grid;place-items:center}
.pp-frame img{width:100%;height:100%;object-fit:cover}
.pp-frame span{font-family:var(--font-display);font-size:2rem;color:var(--accent);font-weight:500}
.pp-form{flex:1;min-width:200px}
.pp-form input[type=file]{width:100%;font-size:.9rem;margin-bottom:8px}
.pp-form .note{margin-bottom:12px}
.profile-dl{margin:0}
.profile-dl > div{display:flex;justify-content:space-between;gap:16px;padding:9px 0;border-bottom:1px solid var(--line);font-size:.94rem}
.profile-dl > div:last-child{border-bottom:none}
.profile-dl dt{color:var(--muted)}
.profile-dl dd{color:var(--ink);font-weight:500}
@media(max-width:760px){ .profile-grid{grid-template-columns:1fr} }

/* ---------- Top-right XP meter ---------- */
.topmeter{display:flex;align-items:center;gap:11px;padding:5px 14px 5px 6px;border:1px solid var(--line-2);
  border-radius:999px;background:var(--card);transition:border-color .2s,box-shadow .2s}
.topmeter:hover{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-tint)}
.tm-ring{position:relative;width:34px;height:34px;flex:0 0 auto;border-radius:50%;display:grid;place-items:center;
  background:conic-gradient(var(--accent) calc(var(--p)*1%),var(--paper-2) 0);transition:--p .6s var(--ease)}
.tm-ring::after{content:"";position:absolute;inset:3px;border-radius:50%;background:var(--card)}
.tm-ring b{position:relative;z-index:1;font-family:var(--font-display);font-size:.62rem;color:var(--accent);
  font-weight:600;font-variant-numeric:tabular-nums;line-height:1}
.tm-ring b i{font-style:normal;font-size:.5em}
.tm-num{line-height:1.1;white-space:nowrap}
.tm-num b{font-family:var(--font-display);font-size:.95rem;color:var(--ink);font-weight:500;font-variant-numeric:tabular-nums}
.tm-num i{font-style:normal;display:block;font-size:.62rem;color:var(--muted);letter-spacing:.02em}

/* ---------- Avatar image (registration photo) ---------- */
.ava{overflow:hidden}
.ava.has-img{padding:0;background:none;border-color:transparent}
.ava img{width:100%;height:100%;object-fit:cover;display:block}

/* ---------- SPA loading hint ---------- */
.pmain{transition:opacity .18s var(--ease)}
.pmain.loading{opacity:.45}

@media(max-width:560px){ .tm-num{display:none} }

/* ============================================================
   Skeletons (shimmer placeholders)
   ============================================================ */
.skel{position:relative;overflow:hidden;background:var(--paper-2);border-radius:8px}
.skel::after{content:"";position:absolute;inset:0;transform:translateX(-100%);
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.6),transparent);animation:shimmer 1.3s infinite}
@keyframes shimmer{100%{transform:translateX(100%)}}
.page-skel{padding:2px 0}
.sk-title{height:38px;width:46%;margin:0 0 14px;border-radius:10px}
.sk-line{height:13px;margin:9px 0;border-radius:6px}
.sk-block{height:160px;margin:18px 0;border-radius:var(--radius)}
.sk-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin-top:22px}
.sk-card{height:120px;border-radius:var(--radius)}
@media(max-width:700px){ .sk-grid{grid-template-columns:1fr} }

/* image load skeleton */
.img-skel{position:relative;overflow:hidden;background:var(--paper-2)}
.img-skel::after{content:"";position:absolute;inset:0;transform:translateX(-100%);
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.6),transparent);animation:shimmer 1.3s infinite}
.img-skel img{opacity:0}
.lesson-img img,.pp-frame img,.ava img{transition:opacity .35s var(--ease)}
.pmain.loading{opacity:.7}

@media (prefers-reduced-motion:reduce){ .skel::after,.img-skel::after{animation:none} }

/* ============================================================
   Responsive pass — phones & small tablets
   ============================================================ */
@media(max-width:600px){
  .pmain{padding:12px 0 30px}
  .pmain > .container{padding:0 16px}
  .phead{margin-bottom:14px}
  .phead h2{font-size:clamp(1.55rem,7vw,2.1rem)}
  .phead .lead{font-size:.98rem}
  .rowhead{font-size:1.2rem}
  .lesson-body{font-size:1rem;line-height:1.68}
  .lesson-body h3{font-size:1.22rem}
  .lesson-body pre.code code{font-size:.8rem}
  .deadlines{flex-direction:column;gap:8px}
  .asg-head{flex-direction:column;align-items:flex-start;gap:8px}
  .week-meta{gap:6px}
  .wm-pill{font-size:.72rem}
  .quiz-actions{gap:10px}
  .quiz-actions .btn{flex:1;justify-content:center}
  .stat-row{grid-template-columns:repeat(2,1fr);gap:12px}
  .stat{padding:16px 16px}
  .stat .n{font-size:1.6rem}
  .lesson-aside .timer-card{min-width:0}
  .code-copy{top:6px;right:6px;padding:3px 9px;font-size:.68rem}
  .auth-card{padding:30px 22px}
}
@media(max-width:400px){
  .phead h2{font-size:1.5rem}
  .stat-row{grid-template-columns:1fr}
  .wk-card{gap:14px}
  .wk-card .wk-no{font-size:1.9rem}
}

/* ============================================================
   Neumorphic surfaces — plain page, soft tactile depth
   ============================================================ */
.sb-top{background:rgba(232,236,242,.9);border-bottom:1px solid var(--line)}
.sb-toggle{background:var(--card);border:none;box-shadow:var(--nm-raise);color:var(--ink)}
.sb-toggle:hover{color:var(--accent);box-shadow:var(--nm-press)}
.topmeter{background:var(--card);border:none;box-shadow:var(--nm-raise)}
.topmeter:hover{box-shadow:var(--nm-press)}
.tm-ring::after{background:var(--card)}

/* raised cards / panels (most already use --card + --shadow-sm, now neumorphic) */
.card,.stat,.proj-card,.bonus-card,.acc,.timer-card,.result,.formwrap,
.cert,.cert-lock,.auth-card{border:none;border-radius:18px}
.acc.locked{box-shadow:var(--nm-press)}
.proj-card,.bonus-card{box-shadow:var(--nm-raise)}

/* recessed wells */
.aside-meta,.lesson-img,.pp-frame{background:var(--card);border:none;box-shadow:var(--nm-press)}
.xp-bar{background:var(--card);border:none;box-shadow:var(--nm-press)}
.xp-bar span{background:var(--accent)}

/* inset inputs */
.field input,.field select,.field textarea,.identify-row input,.q-input,.q-code,
.report-form input,.report-form select,.report-form textarea,.auth-form input,
.adm-search input,.adm-search select{
  background:var(--card);border:none;box-shadow:var(--nm-press);color:var(--ink)}
.field input::placeholder,.q-input::placeholder,.q-code::placeholder,.auth-form input::placeholder{color:#8a93a8}
.field input:focus,.field select:focus,.field textarea:focus,.identify-row input:focus,
.q-input:focus,.q-code:focus,.report-form input:focus,.report-form textarea:focus,
.report-form select:focus,.auth-form input:focus{outline:none;box-shadow:var(--nm-press),0 0 0 2px var(--accent)}

/* tactile buttons */
.btn{border:none;box-shadow:-2px -2px 5px var(--nm-hi),3px 3px 8px var(--nm-sh)}
.btn:hover{transform:translateY(-1px);box-shadow:-3px -3px 8px var(--nm-hi),5px 5px 12px var(--nm-sh)}
.btn:active{transform:translateY(0);box-shadow:var(--nm-press)}
.btn.ghost{background:var(--card);color:var(--ink)}
.btn.ghost:hover{color:var(--accent);background:var(--card)}

/* small chips stay visible on the plain ground via a faint raise */
.wm-pill,.dl,.badge,.soon-badge,.xp-earned,.who,.proj-card .pw{border:none}
.wm-pill,.dl{box-shadow:-1px -1px 3px var(--nm-hi),2px 2px 5px var(--nm-sh)}
.dl.active{box-shadow:inset -1px -1px 3px var(--nm-hi),inset 2px 2px 5px var(--nm-sh)}

/* keep the code panels dark (they read as code) and tables legible */
.md-table{box-shadow:var(--nm-press);border:none;border-radius:12px}
.md-table th{background:transparent}

/* ---------- Submission attachments ---------- */
.q.attach{padding:18px 0 4px;border-top:1px solid var(--line)}
.attach-label{display:block;font-weight:600;font-size:.85rem;color:var(--ink);margin-bottom:8px}
input[type=file]{font-family:inherit;font-size:.88rem;color:var(--text);max-width:100%}
input[type=file]::file-selector-button{font-family:inherit;font-weight:600;font-size:.82rem;cursor:pointer;
  margin-right:12px;padding:8px 14px;border:none;border-radius:999px;background:var(--card);color:var(--ink);
  box-shadow:-2px -2px 5px var(--nm-hi),3px 3px 8px var(--nm-sh)}
input[type=file]::file-selector-button:hover{color:var(--accent)}
.mysub{display:flex;align-items:center;gap:10px;padding:9px 0;border-top:1px solid var(--line);font-size:.84rem;flex-wrap:wrap}
.mysub:first-of-type{border-top:none}
.mysub a{color:var(--accent);font-weight:600}
.mysub b{color:var(--green);font-family:var(--font-display)}
.mysub small{color:var(--muted);margin-left:auto}
.mysub-note{flex-basis:100%;width:100%;margin:2px 0 0;padding:8px 10px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius-sm);color:var(--ink);line-height:1.45}
.mysub-note span{display:block;font-size:.72rem;font-weight:700;text-transform:uppercase;letter-spacing:.04em;color:var(--muted);margin-bottom:2px}

/* image-answer question */
.q-file{margin-left:28px;display:block}
.q-imgans{display:inline-block;margin-left:28px}
.q-imgans img{max-width:260px;border-radius:var(--radius-sm);box-shadow:var(--nm-raise)}
@media(max-width:560px){ .q-file,.q-imgans{margin-left:0} }

/* ---------- Announcement banner ---------- */
.ann-banner{display:flex;align-items:center;gap:12px;padding:11px 24px;background:var(--accent);color:#fff;font-size:.9rem;
  box-shadow:0 6px 14px -10px rgba(35,54,224,.7)}
.ann-dot{width:8px;height:8px;flex:0 0 auto;border-radius:50%;background:#6ee79f;box-shadow:0 0 0 3px rgba(110,231,159,.3)}
.ann-text{flex:1;min-width:0;line-height:1.45}
.ann-text b{font-weight:600}
.ann-link{color:#fff;text-decoration:underline;text-underline-offset:2px;font-weight:600;margin-left:6px;white-space:nowrap}
.ann-x{flex:0 0 auto;width:28px;height:28px;border:0;border-radius:8px;cursor:pointer;color:#fff;font-size:1.2rem;line-height:1;
  background:rgba(255,255,255,.18);transition:background .2s}
.ann-x:hover{background:rgba(255,255,255,.32)}
@media(max-width:560px){ .ann-banner{padding:10px 16px;font-size:.84rem;gap:9px} }

/* ---------- Profile header ---------- */
.profile-head{display:flex;align-items:center;gap:22px;flex-wrap:wrap;max-width:920px}
.ph-photo{width:88px;height:88px;flex:0 0 auto;border-radius:20px;overflow:hidden;display:grid;place-items:center;
  background:var(--card);box-shadow:var(--nm-raise);color:var(--accent);font-family:var(--font-display);font-size:2rem;font-weight:600}
.ph-photo img{width:100%;height:100%;object-fit:cover}
.ph-id{min-width:0}
.ph-id h3{font-family:var(--font-display);font-weight:500;font-size:1.5rem;letter-spacing:-.02em;color:var(--ink)}
.ph-sub{color:var(--muted);font-size:.95rem;margin:2px 0 10px}
.ph-tags{display:flex;flex-wrap:wrap;gap:8px}
.ph-tag{font-size:.76rem;font-weight:500;padding:5px 12px;border-radius:999px;background:var(--card);color:var(--text);
  box-shadow:-1px -1px 3px var(--nm-hi),2px 2px 5px var(--nm-sh)}
.ph-tag.accent{color:var(--accent);font-family:var(--font-display)}
.profile-head + .stat-row,.profile-grid{max-width:920px}

/* ---------- XP explainer (dashboard) ---------- */
.xp-explain{margin-bottom:18px}
.xpx-head{display:flex;align-items:baseline;justify-content:space-between;gap:14px;flex-wrap:wrap;margin-bottom:16px}
.xpx-head h3{font-family:var(--font-display);font-weight:500;font-size:1.2rem;letter-spacing:-.01em;color:var(--ink)}
.xpx-goal{font-size:.9rem;color:var(--muted)}
.xpx-goal b{color:var(--accent);font-family:var(--font-display)}
.xpx-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.xpx-item{display:flex;align-items:center;gap:12px;padding:14px 16px;border-radius:14px;background:var(--card);
  box-shadow:var(--nm-press)}
.xpx-ic{font-size:1.5rem;line-height:1;flex:0 0 auto}
.xpx-item b{display:block;font-family:var(--font-display);font-weight:500;font-size:1.02rem;color:var(--ink)}
.xpx-item small{display:block;color:var(--muted);font-size:.8rem;line-height:1.35;margin-top:2px}
.xpx-foot{margin-top:14px;color:var(--muted);font-size:.86rem;line-height:1.5}
@media(max-width:760px){ .xpx-grid{grid-template-columns:1fr} }

/* ---------- XP help popover (top bar, every page) ---------- */
.xp-wrap{position:relative;display:flex;align-items:center;gap:6px}
.xp-help-btn{width:22px;height:22px;flex:0 0 auto;border:none;border-radius:50%;cursor:pointer;
  font-family:var(--font-display);font-weight:700;font-size:.78rem;color:var(--accent);background:var(--card);
  display:flex;align-items:center;justify-content:center;box-shadow:-1px -1px 3px var(--nm-hi),2px 2px 5px var(--nm-sh)}
.xp-help-btn:hover{box-shadow:var(--nm-press)}
.xp-pop{position:absolute;top:calc(100% + 12px);right:0;width:300px;z-index:60;display:none;
  background:var(--card);border-radius:16px;padding:18px;
  box-shadow:var(--nm-raise),0 18px 40px -20px rgba(70,92,128,.5)}
.xp-pop.open{display:block;animation:xpPopIn .2s var(--ease)}
@keyframes xpPopIn{from{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:none}}
.xp-pop h4{font-family:var(--font-display);font-weight:500;font-size:1.05rem;color:var(--ink);margin-bottom:6px}
.xp-pop p{font-size:.86rem;color:var(--muted);line-height:1.5;margin-bottom:12px}
.xp-pop p b{color:var(--accent);font-family:var(--font-display)}
.xp-pop-list{list-style:none;margin:0 0 12px;display:grid;gap:9px}
.xp-pop-list li{display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:.85rem;color:var(--text)}
.xp-pop-list b{font-family:var(--font-display);color:var(--ink);font-weight:500;white-space:nowrap}
.xp-pop-link{font-size:.85rem;font-weight:600;color:var(--accent)}
@media(max-width:560px){ .xp-pop{position:fixed;left:12px;right:12px;width:auto;top:60px} }

/* ── dashboard info image grid (XP calc · certification · roadmap) ── */
.info-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin:22px 0}
.info-tile{margin:0;padding:10px;border-radius:18px;background:var(--nm-bg);
  box-shadow:var(--shadow-sm);overflow:hidden}
.info-tile.wide{grid-column:1 / -1}
.info-tile img{display:block;width:100%;height:auto;border-radius:12px}
@media(max-width:680px){
  .info-grid{grid-template-columns:1fr;gap:14px;margin:18px 0}
}

/* ── collapsible "What is XP?" (native details/summary) ── */
.collapse{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  margin:22px 0;overflow:hidden}
.collapse>summary{display:flex;align-items:center;gap:12px;flex-wrap:wrap;
  padding:16px 20px;cursor:pointer;list-style:none;-webkit-user-select:none;user-select:none}
.collapse>summary::-webkit-details-marker{display:none}
.collapse-title{font-family:var(--font-display);font-weight:500;font-size:1.15rem;
  letter-spacing:-.01em;color:var(--ink)}
.collapse summary .xpx-goal{margin-right:auto}
.collapse-chev{margin-left:auto;font-size:1.4rem;line-height:1;color:var(--muted);
  transition:transform .25s var(--ease)}
.collapse[open] .collapse-chev{transform:rotate(180deg)}
.collapse>summary:hover .collapse-chev{color:var(--accent)}
.collapse-body{padding:0 20px 20px}
.collapse-body .info-grid{margin:18px 0 0}
@media(max-width:760px){ .collapse summary .xpx-goal{flex-basis:100%;margin:2px 0 0} }

/* answer reveal is withheld until the week ends (anti-cheat) */
.q-answer.locked{color:var(--muted);font-style:italic;opacity:.85}