/* ── BUTTONS ── */
.btn {
  padding: 8px 18px;
  border-radius: var(--r);
  cursor: pointer;
  font-size: 13px;
  font-weight: 500;
  font-family: 'Rajdhani', 'Noto Sans SC', sans-serif;
  letter-spacing: .04em;
  text-transform: uppercase;
  transition: all .15s;
  border: none;
}
.btn-primary {
  background: var(--navy2);
  color: #fff;
  box-shadow: 0 0 0 0 rgba(56,189,248,0);
  transition: box-shadow .2s, opacity .15s;
}
.btn-primary:hover {
  opacity: .9;
  box-shadow: var(--glow-cyan);
}
.btn-secondary {
  background: var(--s2);
  color: var(--muted);
  border: 1px solid var(--border);
}
.btn-secondary:hover { border-color: var(--navy); color: var(--navy); }
.btn-danger { background: var(--redl); color: var(--red); border: 1px solid rgba(248,113,113,.25); }
.btn-sm { padding: 5px 12px; font-size: 11px; }
.btn-ghost { background: none; border: 1px solid var(--border); color: var(--muted); }
.btn-ghost:hover { border-color: var(--amber); color: var(--amber); }
.btn-purple { background: var(--purple); color: #fff; }
.btn-purple:hover { opacity: .9; box-shadow: 0 0 14px rgba(167,139,250,.4); }

/* ── STUDENT LOGIN MODAL ── */
.login-overlay {
  position: fixed;
  inset: 0;
  z-index: 10000;
  background: rgba(4,6,12,.85);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  animation: fadeIn .3s;
}
@keyframes fadeIn { from{opacity:0} to{opacity:1} }

.login-box {
  background: var(--surface);
  border: 1px solid var(--border2);
  border-radius: var(--rlg);
  padding: 36px 32px;
  max-width: 420px;
  width: 90%;
  text-align: center;
  box-shadow: 0 0 60px rgba(56,189,248,.08), 0 30px 80px rgba(0,0,0,.5);
  animation: scaleIn .3s cubic-bezier(.34,1.3,.64,1);
  position: relative;
  overflow: hidden;
}
.login-box::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--navy), var(--amber), transparent);
}
@keyframes scaleIn { from{transform:scale(.92);opacity:0} to{transform:scale(1);opacity:1} }

.login-box h2 {
  font-family: 'Rajdhani', sans-serif;
  font-size: 26px;
  font-weight: 700;
  letter-spacing: .06em;
  margin-bottom: 4px;
  color: var(--text);
}
.login-box .login-sub {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--hint);
  margin-bottom: 20px;
  letter-spacing: .5px;
}
.login-box input {
  width: 100%;
  padding: 11px 14px;
  border: 1px solid var(--border);
  border-radius: var(--r);
  font-size: 15px;
  text-align: center;
  outline: none;
  margin-bottom: 14px;
  transition: border-color .2s, box-shadow .2s;
  background: var(--bg);
  color: var(--text);
}
.login-box input:focus {
  border-color: var(--navy);
  box-shadow: 0 0 0 3px rgba(56,189,248,.12);
}

.login-box .login-avatars {
  display: flex;
  gap: 7px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 16px;
}
.login-avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 21px;
  border: 1.5px solid var(--border);
  cursor: pointer;
  transition: all .15s;
  background: var(--s2);
}
.login-avatar.sel {
  border-color: var(--navy);
  background: rgba(56,189,248,.12);
  transform: scale(1.12);
  box-shadow: var(--glow-cyan);
}

/* Language tier selector */
.lang-tier-row {
  display: grid;
  grid-template-columns: repeat(4,1fr);
  gap: 6px;
  margin-bottom: 16px;
}
.lang-tier-opt {
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 9px 6px;
  cursor: pointer;
  transition: all .15s;
  text-align: center;
  background: var(--s2);
}
.lang-tier-opt:hover { border-color: var(--navy); transform: translateY(-1px); }
.lang-tier-opt.sel {
  border-color: var(--green);
  background: var(--greenl);
  box-shadow: var(--glow-green);
}
.lang-tier-opt .lt-icon { font-size: 18px; display: block; margin-bottom: 2px; }
.lang-tier-opt .lt-label { font-size: 10px; font-weight: 600; line-height: 1.2; color: var(--text); }
.lang-tier-opt .lt-ielts { font-size: 9px; color: var(--muted); margin-top: 2px; }
.lang-tier-opt .lt-desc { font-size: 9px; color: var(--hint); margin-top: 2px; line-height: 1.2; }
.lang-tier-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  padding: 2px 9px;
  border-radius: 20px;
  background: var(--s2);
  color: var(--muted);
  border: 1px solid var(--border);
  margin-left: 6px;
}

/* ── STAT CARDS ── */
.stats-row {
  display: grid;
  grid-template-columns: repeat(5,1fr);
  gap: 10px;
  margin-bottom: 28px;
}
.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--rlg);
  padding: 14px 16px;
  transition: transform .15s, border-color .2s;
  position: relative;
  overflow: hidden;
}
.stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(56,189,248,.3), transparent);
  opacity: 0;
  transition: opacity .2s;
}
.stat-card:hover { transform: translateY(-2px); border-color: var(--border2); }
.stat-card:hover::before { opacity: 1; }
.stat-card .sv {
  font-family: 'JetBrains Mono', monospace;
  font-size: 26px;
  line-height: 1;
  color: var(--text);
  font-weight: 600;
}
.stat-card .sl {
  font-family: 'JetBrains Mono', monospace;
  font-size: 9px;
  color: var(--hint);
  margin-top: 5px;
  text-transform: uppercase;
  letter-spacing: 1px;
}
.stat-card.gold-glow { border-color: rgba(251,191,36,.2); }
.stat-card.gold-glow .sv { color: var(--gold); text-shadow: var(--glow-amber); }

/* ── TOPIC CARDS ── */
.sec-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  color: var(--hint);
  margin-bottom: 12px;
}
.topic-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 10px; margin-bottom: 28px; }
.tc {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--rlg);
  padding: 15px 18px;
  cursor: pointer;
  transition: all .2s;
  display: flex;
  gap: 12px;
  align-items: flex-start;
  position: relative;
  overflow: hidden;
}
.tc::after {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--border2);
  transition: background .2s;
}
.tc:hover {
  border-color: var(--navy);
  transform: translateY(-1px);
  box-shadow: 0 4px 20px rgba(0,0,0,.3), var(--glow-cyan);
}
.tc:hover::after { background: var(--navy); }
.tc.done-card { border-color: rgba(16,185,129,.3); }
.tc.done-card::after { background: var(--green); }
.tc-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--r);
  background: var(--s2);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  flex-shrink: 0;
}
.tc-num {
  font-family: 'JetBrains Mono', monospace;
  font-size: 9px;
  color: var(--hint);
  text-transform: uppercase;
  letter-spacing: .8px;
}
.tc-name { font-size: 13px; font-weight: 500; margin-top: 2px; line-height: 1.3; color: var(--text); }
.tc-meta { font-size: 11px; color: var(--muted); margin-top: 3px; }

/* ── BADGE ── */
.badge {
  display: inline-block;
  padding: 2px 7px;
  border-radius: 4px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  font-weight: 500;
  letter-spacing: .3px;
}
.bg { background: var(--greenl); color: var(--greenmid); border: 1px solid rgba(52,211,153,.2); }
.ba { background: var(--amberl); color: var(--amber); border: 1px solid rgba(245,158,11,.2); }

/* ── CHAT MESSAGES — Intelligence Briefing Style ── */
.msg {
  max-width: 85%;
  padding: 12px 16px;
  font-size: 14px;
  line-height: 1.7;
  border-radius: var(--r);
  position: relative;
}
.msg.ai {
  align-self: flex-start;
  background: var(--s2);
  border: 1px solid var(--border);
  border-left: 3px solid var(--navy);
  color: var(--text);
  border-radius: 0 var(--r) var(--r) 0;
}
.msg.user {
  align-self: flex-end;
  background: rgba(56,189,248,.1);
  border: 1px solid rgba(56,189,248,.2);
  color: var(--text);
  border-right: 3px solid var(--amber);
  border-radius: var(--r) 0 0 var(--r);
}
.msg.ai.thinking {
  color: var(--hint);
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
}

/* ── HOW GRID ── */
.how-grid {
  display: grid;
  grid-template-columns: repeat(5,1fr);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--rlg);
  overflow: hidden;
}
.how-step {
  padding: 16px;
  border-right: 1px solid var(--border);
}
.how-step:last-child { border-right: none; }
.how-icon { font-size: 18px; margin-bottom: 6px; }
.how-title { font-size: 12px; font-weight: 500; margin-bottom: 2px; color: var(--text); }
.how-desc { font-size: 11px; color: var(--muted); }

/* ── LEVEL BADGE ── */
.level-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 10px;
  border-radius: 4px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  font-weight: 600;
  background: var(--amberl);
  color: var(--amber);
  border: 1px solid rgba(245,158,11,.3);
  text-shadow: var(--glow-amber);
}

/* ── XP POP / STREAK ANIMATION ── */
.xp-pop {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%,-50%);
  z-index: 9999;
  pointer-events: none;
  animation: xpPop .9s ease-out forwards;
}
.xp-pop-inner { text-align: center; }
.xp-pop .xp-val {
  font-family: 'Rajdhani', sans-serif;
  font-size: 56px;
  font-weight: 700;
  color: var(--gold);
  text-shadow: var(--glow-amber);
}
.xp-pop .xp-label { font-family: 'JetBrains Mono', monospace; font-size: 12px; color: var(--muted); margin-top: 4px; }
@keyframes xpPop {
  0%{opacity:0;transform:translate(-50%,-50%) scale(.5)}
  30%{opacity:1;transform:translate(-50%,-50%) scale(1.1)}
  50%{transform:translate(-50%,-50%) scale(1)}
  100%{opacity:0;transform:translate(-50%,-70%) scale(1)}
}

#confetti-canvas { position:fixed;top:0;left:0;width:100%;height:100%;pointer-events:none;z-index:9998; }

.streak-popup {
  position: fixed;
  bottom: 28px;
  right: 28px;
  background: var(--surface);
  border: 1px solid var(--border2);
  border-top: 2px solid var(--amber);
  color: var(--text);
  padding: 14px 22px;
  border-radius: var(--rlg);
  z-index: 9997;
  animation: streakSlide .4s ease-out;
  box-shadow: 0 8px 32px rgba(0,0,0,.4), var(--glow-amber);
}
.streak-popup .sp-title {
  font-family: 'JetBrains Mono', monospace;
  font-size: 9px;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  color: var(--hint);
}
.streak-popup .sp-val {
  font-family: 'Rajdhani', sans-serif;
  font-size: 32px;
  font-weight: 700;
  color: var(--amber);
  margin: 4px 0;
}
.streak-popup .sp-msg { font-size: 12px; color: var(--muted); }
@keyframes streakSlide { 0%{opacity:0;transform:translateY(20px)} 100%{opacity:1;transform:translateY(0)} }
@keyframes correctPulse { 0%{box-shadow:0 0 0 0 rgba(16,185,129,.4)} 70%{box-shadow:0 0 0 10px rgba(16,185,129,0)} 100%{box-shadow:0 0 0 0 rgba(16,185,129,0)} }
.opt.correct { animation: correctPulse .6s ease-out; }

/* ── DAILY GOALS ── */
.dg-wrap {
  background: var(--s2);
  border: 1px solid var(--border);
  border-radius: var(--rlg);
  padding: 18px 22px;
  margin-bottom: 22px;
  position: relative;
  overflow: hidden;
}
.dg-wrap::before {
  content: 'MISSION BRIEF';
  position: absolute;
  top: 10px;
  right: 16px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 9px;
  letter-spacing: 1.5px;
  color: var(--hint);
}
.dg-title {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  color: var(--hint);
  margin-bottom: 10px;
}
.dg-grid { display: flex; gap: 10px; flex-wrap: wrap; }
.dg-item {
  flex: 1;
  min-width: 110px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 11px;
  text-align: center;
  transition: border-color .2s;
}
.dg-item.done { background: var(--greenl); border-color: rgba(16,185,129,.3); }
.dg-item .dg-icon { font-size: 18px; margin-bottom: 3px; }
.dg-item .dg-label { font-family: 'JetBrains Mono', monospace; font-size: 10px; color: var(--muted); }
.dg-item .dg-prog { font-family: 'JetBrains Mono', monospace; font-size: 13px; font-weight: 600; margin-top: 2px; color: var(--text); }

/* ── HERO ── */
.hero { margin-bottom: 30px; }
.hero h1 {
  font-family: 'Rajdhani', sans-serif;
  font-size: 40px;
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: .02em;
  margin-bottom: 8px;
  color: var(--text);
}
.hero p { font-size: 14px; color: var(--muted); max-width: 500px; line-height: 1.65; }

/* ── LEARN VIEW ── */
.learn-hd { margin-bottom: 22px; }
.breadcrumb {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--hint);
  margin-bottom: 4px;
  letter-spacing: .3px;
}
.learn-hd h2 {
  font-family: 'Rajdhani', sans-serif;
  font-size: 28px;
  font-weight: 700;
  letter-spacing: .02em;
}
.learn-hd .desc { font-size: 13px; color: var(--muted); margin-top: 3px; }
.step-tabs {
  display: flex;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--rlg);
  overflow: hidden;
  margin-bottom: 18px;
}
.stab {
  flex: 1;
  padding: 11px;
  cursor: pointer;
  border: none;
  background: none;
  transition: background .15s;
  text-align: center;
  border-right: 1px solid var(--border);
}
.stab:last-child { border-right: none; }
.stab:hover { background: var(--s2); }
.stab.on { background: rgba(56,189,248,.1); }
.stab-n {
  font-family: 'JetBrains Mono', monospace;
  font-size: 9px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--hint);
}
.stab.on .stab-n { color: var(--navy); }
.stab-l { font-size: 13px; font-weight: 500; color: var(--muted); margin-top: 2px; }
.stab.on .stab-l { color: var(--navy); }
.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--rlg);
  padding: 22px 26px;
  margin-bottom: 14px;
}
.vid-wrap {
  aspect-ratio: 16/9;
  background: #000;
  border-radius: var(--r);
  overflow: hidden;
  margin-bottom: 10px;
}
.vid-wrap iframe { width: 100%; height: 100%; border: none; }
.vid-ph {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  color: var(--hint);
  gap: 10px;
}

/* ── FILL NOTES ── */
.fill-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--rlg);
  padding: 16px 20px;
  margin-bottom: 9px;
  transition: border-color .2s;
}
.fill-card.fc-ok { border-color: rgba(16,185,129,.5); }
.fill-card.fc-err { border-color: rgba(248,113,113,.5); }
.fill-card.fc-shown { border-color: rgba(245,158,11,.5); }
.fq { font-size: 14px; color: var(--text); line-height: 1.6; margin-bottom: 9px; }
.fq strong { color: var(--navy); }
.f-row { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.f-inp {
  flex: 1;
  min-width: 150px;
  padding: 7px 12px;
  border: 1px solid var(--border);
  border-radius: var(--r);
  font-size: 14px;
  color: var(--text);
  background: var(--bg);
  outline: none;
  transition: border-color .15s, box-shadow .15s;
}
.f-inp:focus { border-color: var(--navy); box-shadow: 0 0 0 3px rgba(56,189,248,.1); }
.f-inp:disabled { opacity: .5; cursor: not-allowed; }
.f-inp.ok { border-color: var(--green); background: var(--greenl); color: var(--greenmid); font-weight: 500; }
.f-inp.err { border-color: var(--red); background: var(--redl); color: var(--red); }
.f-inp.shown { border-color: var(--amber); background: var(--amberl); color: var(--amber); font-style: italic; }
.hint-tag {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  padding: 2px 7px;
  border-radius: 4px;
  background: var(--s2);
  color: var(--muted);
  border: 1px solid var(--border);
  white-space: nowrap;
}
.f-fb { margin-top: 7px; font-size: 12px; padding: 7px 11px; border-radius: var(--r); display: none; line-height: 1.5; }
.f-fb.ok { background: var(--greenl); color: var(--greenmid); display: block; border-left: 2px solid var(--green); }
.f-fb.err { background: var(--redl); color: var(--red); display: block; border-left: 2px solid var(--red); }
.f-fb.shown { background: var(--amberl); color: var(--amber); display: block; border-left: 2px solid var(--amber); }
.formula-box {
  background: var(--bluel);
  border: 1px solid rgba(96,165,250,.2);
  border-radius: var(--r);
  padding: 12px 16px;
  margin-bottom: 10px;
}
.formula-title {
  font-family: 'JetBrains Mono', monospace;
  font-size: 9px;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  color: var(--blue);
  margin-bottom: 7px;
  font-weight: 600;
}
.formula-row { display: flex; align-items: center; gap: 8px; margin-bottom: 6px; font-size: 13px; flex-wrap: wrap; }
.formula-row:last-child { margin-bottom: 0; }
.f-lbl { font-weight: 600; color: var(--blue); min-width: 130px; }
.fill-table { width: 100%; border-collapse: collapse; margin-bottom: 10px; }
.fill-table th { background: rgba(56,189,248,.12); color: var(--navy); padding: 8px 11px; font-size: 12px; font-weight: 600; text-align: left; border-bottom: 1px solid var(--border); }
.fill-table td { padding: 8px 11px; border: 1px solid var(--border); font-size: 13px; vertical-align: top; }
.fill-table tr:nth-child(even) td { background: var(--s2); }
.fill-table .rl { font-weight: 500; color: var(--navy); background: rgba(56,189,248,.06) !important; }
.notes-score { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; font-size: 13px; color: var(--muted); }
.notes-score strong { color: var(--text); }

/* ── MCQ ── */
.mcq-top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 4px; }
.mcq-lbl { font-family: 'JetBrains Mono', monospace; font-size: 12px; color: var(--muted); }
.score-pill {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  font-weight: 500;
  padding: 2px 10px;
  border-radius: 4px;
  background: var(--s2);
  color: var(--muted);
  border: 1px solid var(--border);
}
.prog-wrap { height: 2px; background: var(--border); border-radius: 1px; margin-bottom: 20px; }
.prog-fill { height: 2px; background: var(--green); border-radius: 1px; transition: width .3s; box-shadow: var(--glow-green); }
.q-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--rlg);
  padding: 22px 26px;
}
.q-text { font-size: 15px; font-weight: 500; line-height: 1.55; margin-bottom: 16px; color: var(--text); }
.opt {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  width: 100%;
  padding: 10px 13px;
  margin-bottom: 7px;
  background: var(--s2);
  border: 1px solid var(--border);
  border-radius: var(--r);
  cursor: pointer;
  text-align: left;
  font-size: 14px;
  color: var(--text);
  transition: all .12s;
}
.opt:hover:not(:disabled) { background: var(--surface); border-color: var(--navy); }
.opt-l {
  width: 22px;
  height: 22px;
  border-radius: 4px;
  background: var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  font-weight: 600;
  color: var(--muted);
  flex-shrink: 0;
  margin-top: 1px;
}
.opt.correct { background: var(--greenl); border-color: rgba(16,185,129,.4); }
.opt.correct .opt-l { background: var(--green); color: #fff; }
.opt.wrong { background: var(--redl); border-color: rgba(248,113,113,.4); }
.opt.wrong .opt-l { background: var(--red); color: #fff; }
.opt.reveal { background: var(--greenl); border-color: rgba(16,185,129,.4); }
.opt.reveal .opt-l { background: var(--green); color: #fff; }
.opt:disabled { cursor: default; }
.exp {
  margin-top: 10px;
  padding: 12px 14px;
  background: var(--s2);
  border-left: 3px solid var(--green);
  border-radius: 0 var(--r) var(--r) 0;
  font-size: 13px;
  color: var(--text);
  line-height: 1.65;
}
.exp-lbl { font-family: 'JetBrains Mono', monospace; font-weight: 600; font-size: 10px; margin-bottom: 4px; color: var(--green); letter-spacing: .5px; }
.mcq-nav { display: flex; justify-content: flex-end; margin-top: 14px; gap: 9px; }

/* ── RESULT ── */
.result-wrap {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--rlg);
  padding: 32px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.result-pct {
  font-family: 'JetBrains Mono', monospace;
  font-size: 56px;
  font-weight: 600;
  color: var(--text);
  line-height: 1;
}
.result-frac { font-family: 'JetBrains Mono', monospace; font-size: 14px; color: var(--muted); margin-top: 3px; }
.result-msg { font-size: 13px; color: var(--muted); margin: 10px auto 20px; max-width: 360px; }
.dot-row { display: flex; gap: 4px; justify-content: center; flex-wrap: wrap; margin-bottom: 20px; }
.dot { width: 27px; height: 27px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-family: 'JetBrains Mono', monospace; font-size: 11px; font-weight: 600; }
.dok { background: var(--greenl); color: var(--greenmid); }
.dbad { background: var(--redl); color: var(--red); }
.result-xp {
  margin: 10px 0;
  padding: 9px 16px;
  background: var(--amberl);
  border: 1px solid rgba(245,158,11,.3);
  border-radius: var(--r);
  display: inline-block;
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  font-weight: 600;
  color: var(--amber);
}

/* ── ERROR BOOK ── */
.eb-hd { display: flex; align-items: center; justify-content: space-between; margin-bottom: 18px; }
.eb-empty { text-align: center; padding: 50px 20px; color: var(--muted); }
.eb-group { margin-bottom: 22px; }
.eb-group-title {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  color: var(--hint);
  margin-bottom: 8px;
  padding-bottom: 5px;
  border-bottom: 1px solid var(--border);
}
.eb-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 13px 16px;
  margin-bottom: 6px;
  transition: border-color .15s;
}
.eb-item:hover { border-color: var(--border2); }
.eb-q { font-size: 13px; font-weight: 500; margin-bottom: 5px; line-height: 1.4; }
.eb-y { font-size: 12px; color: var(--red); margin-bottom: 2px; }
.eb-c { font-size: 12px; color: var(--green); margin-bottom: 7px; }
.eb-exp { font-size: 12px; color: var(--muted); line-height: 1.6; padding: 8px 11px; background: var(--s2); border-radius: 4px; }

/* ── AI TUTOR ── */
.ai-wrap { display: flex; flex-direction: column; height: calc(100vh - 200px); min-height: 500px; }
.ai-messages {
  flex: 1;
  overflow-y: auto;
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--rlg) var(--rlg) 0 0;
}
.ai-input-row {
  display: flex;
  background: var(--surface);
  border: 1px solid var(--border);
  border-top: none;
  border-radius: 0 0 var(--rlg) var(--rlg);
  overflow: hidden;
}
.ai-inp {
  flex: 1;
  padding: 13px 16px;
  border: none;
  outline: none;
  font-size: 14px;
  font-family: 'Noto Sans SC', sans-serif;
  color: var(--text);
  background: transparent;
  resize: none;
}
.ai-inp::placeholder { color: var(--hint); }
.ai-send {
  padding: 0 20px;
  background: var(--navy2);
  color: #fff;
  border: none;
  cursor: pointer;
  font-family: 'Rajdhani', sans-serif;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .05em;
  text-transform: uppercase;
  transition: opacity .15s, box-shadow .15s;
  white-space: nowrap;
}
.ai-send:hover { opacity: .9; box-shadow: var(--glow-cyan); }
.ai-send:disabled { opacity: .35; cursor: not-allowed; }
.ai-topic-select { margin-bottom: 12px; }
.ai-topic-select select {
  width: 100%;
  padding: 9px 12px;
  border: 1px solid var(--border);
  border-radius: var(--r);
  font-size: 13px;
  font-family: 'Noto Sans SC', sans-serif;
  color: var(--text);
  background: var(--surface);
  outline: none;
}

/* ── AI ROLE SELECTOR ── */
.ai-role-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 7px; margin-bottom: 12px; }
.ai-role-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 10px 11px;
  cursor: pointer;
  transition: all .15s;
  text-align: center;
  position: relative;
}
.ai-role-card.locked { opacity: .4; cursor: not-allowed; filter: grayscale(.7); }
.ai-role-card.locked:hover { transform: none; border-color: var(--border); }
.ai-role-card .role-lock { font-family: 'JetBrains Mono', monospace; font-size: 9px; color: var(--hint); margin-top: 3px; line-height: 1.2; }
.role-unlock-toast {
  position: fixed;
  top: 20px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--surface);
  border: 1px solid var(--green);
  border-top: 2px solid var(--green);
  color: var(--text);
  padding: 12px 24px;
  border-radius: var(--rlg);
  font-size: 14px;
  font-weight: 500;
  z-index: 9999;
  animation: scaleIn .3s ease-out;
  box-shadow: var(--glow-green);
}
.ai-role-card:hover { border-color: var(--navy); transform: translateY(-1px); }
.ai-role-card.active { border-color: var(--green); background: var(--greenl); }
.ai-role-card .role-emoji { font-size: 20px; display: block; margin-bottom: 3px; }
.ai-role-card .role-name { font-size: 11px; font-weight: 600; color: var(--text); line-height: 1.2; }
.ai-role-card .role-desc { font-size: 10px; color: var(--muted); margin-top: 2px; line-height: 1.3; }
.lang-settings-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--rlg);
  padding: 14px 17px;
  margin-bottom: 14px;
}
.lang-settings-card h4 { font-size: 13px; font-weight: 600; margin-bottom: 9px; }
.ai-role-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 10px;
  border-radius: 4px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  font-weight: 500;
  background: var(--greenl);
  color: var(--greenmid);
  border: 1px solid rgba(52,211,153,.2);
  margin-bottom: 9px;
}
.ai-role-badge .role-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--green);
  animation: pulse 2s infinite;
}
@keyframes pulse { 0%,100%{opacity:1} 50%{opacity:.3} }
@media(max-width:768px) { .ai-role-grid { grid-template-columns: repeat(2,1fr); } }

/* ── PROGRESS ── */
.prog-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 10px; }
.pg-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--rlg);
  padding: 15px;
  transition: border-color .2s;
}
.pg-card:hover { border-color: var(--border2); }
.pg-num { font-family: 'JetBrains Mono', monospace; font-size: 10px; color: var(--hint); margin-bottom: 2px; }
.pg-name { font-size: 13px; font-weight: 500; margin-bottom: 8px; color: var(--text); }
.pg-track { height: 3px; background: var(--border); border-radius: 2px; }
.pg-fill { height: 3px; background: var(--green); border-radius: 2px; box-shadow: var(--glow-green); }
.pg-meta { display: flex; justify-content: space-between; margin-top: 5px; font-family: 'JetBrains Mono', monospace; font-size: 10px; color: var(--hint); }

/* ── STRUCTURED QUESTIONS ── */
.sq-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--rlg);
  padding: 20px;
  margin-bottom: 12px;
}
.sq-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 10px; }
.sq-marks { font-family: 'JetBrains Mono', monospace; font-size: 11px; font-weight: 600; padding: 2px 9px; border-radius: 4px; background: var(--purplel); color: var(--purple); border: 1px solid rgba(167,139,250,.2); }
.sq-question { font-size: 14px; line-height: 1.65; margin-bottom: 12px; }
.sq-upload-area {
  border: 1.5px dashed var(--border2);
  border-radius: var(--r);
  padding: 26px;
  text-align: center;
  cursor: pointer;
  transition: all .2s;
  margin-bottom: 10px;
  color: var(--hint);
}
.sq-upload-area:hover { border-color: var(--navy); color: var(--navy); }
.sq-upload-area.has-img { border-color: var(--green); padding: 10px; }
.sq-upload-area img { max-width: 100%; max-height: 300px; border-radius: 4px; }
.sq-feedback {
  margin-top: 10px;
  padding: 14px;
  border-radius: var(--r);
  background: var(--s2);
  border-left: 3px solid var(--purple);
  line-height: 1.7;
  font-size: 13px;
}
.sq-feedback .sq-score-bar { display: flex; align-items: center; gap: 10px; margin-bottom: 9px; }
.sq-feedback .sq-score-val { font-family: 'JetBrains Mono', monospace; font-size: 22px; font-weight: 600; color: var(--purple); }
.sq-feedback .sq-fb-text { white-space: pre-line; }

/* ── DISCUSSION HUB ── */
.disc-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--rlg);
  padding: 18px;
  margin-bottom: 12px;
  cursor: pointer;
  transition: all .15s;
}
.disc-card:hover { border-color: var(--purple); transform: translateY(-1px); box-shadow: 0 4px 20px rgba(0,0,0,.3); }
.disc-tag {
  display: inline-block;
  font-family: 'JetBrains Mono', monospace;
  font-size: 9px;
  text-transform: uppercase;
  letter-spacing: .8px;
  padding: 2px 7px;
  border-radius: 3px;
  font-weight: 600;
  margin-right: 5px;
  border: 1px solid;
}
.disc-tag.dt-debate { background: var(--redl); color: var(--red); border-color: rgba(248,113,113,.2); }
.disc-tag.dt-case { background: var(--bluel); color: var(--blue); border-color: rgba(96,165,250,.2); }
.disc-tag.dt-ai { background: var(--purplel); color: var(--purple); border-color: rgba(167,139,250,.2); }
.disc-title { font-size: 14px; font-weight: 500; margin: 7px 0 4px; }
.disc-meta { font-family: 'JetBrains Mono', monospace; font-size: 11px; color: var(--muted); }
.disc-thread { margin-top: 12px; padding: 14px; background: var(--bg); border-radius: var(--r); }
.disc-post { padding: 11px; background: var(--surface); border: 1px solid var(--border); border-radius: var(--r); margin-bottom: 7px; font-size: 13px; line-height: 1.6; }
.disc-post .dp-name { font-family: 'JetBrains Mono', monospace; font-weight: 600; font-size: 11px; color: var(--navy); margin-bottom: 3px; }
.disc-post-input { display: flex; gap: 7px; margin-top: 7px; }
.disc-post-input textarea {
  flex: 1;
  padding: 8px 11px;
  border: 1px solid var(--border);
  border-radius: var(--r);
  font-size: 13px;
  resize: none;
  outline: none;
  font-family: 'Noto Sans SC', sans-serif;
  background: var(--surface);
  color: var(--text);
}
.disc-post-input textarea:focus { border-color: var(--navy); }

/* ── SOFT SKILLS DASHBOARD ── */
.ss-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 10px; margin-bottom: 20px; }
.ss-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--rlg);
  padding: 16px;
  transition: border-color .2s;
}
.ss-card:hover { border-color: var(--border2); }
.ss-icon { font-size: 22px; margin-bottom: 6px; }
.ss-dim { font-family: 'JetBrains Mono', monospace; font-size: 10px; text-transform: uppercase; letter-spacing: 1px; color: var(--hint); margin-bottom: 3px; }
.ss-level { font-family: 'Rajdhani', sans-serif; font-size: 16px; font-weight: 700; color: var(--text); }
.ss-pts { font-family: 'JetBrains Mono', monospace; font-size: 11px; color: var(--muted); margin-top: 2px; }
.ss-track { height: 2px; background: var(--border); border-radius: 1px; margin-top: 8px; }
.ss-fill { height: 2px; border-radius: 1px; transition: width .4s; }

/* ── LEADERBOARD ── */
.lb-podium { display: flex; align-items: flex-end; justify-content: center; gap: 8px; margin-bottom: 24px; }
.lb-place { display: flex; flex-direction: column; align-items: center; }
.lb-place .lb-crown { font-size: 20px; margin-bottom: 4px; }
.lb-place .lb-avatar { font-size: 26px; width: 52px; height: 52px; border-radius: 50%; background: var(--s2); border: 2px solid var(--border); display: flex; align-items: center; justify-content: center; }
.lb-place.p1 .lb-avatar { border-color: var(--gold); box-shadow: var(--glow-amber); }
.lb-place.p2 .lb-avatar { border-color: var(--muted); }
.lb-place.p3 .lb-avatar { border-color: var(--amber); }
.lb-place .lb-name { font-size: 12px; font-weight: 600; margin-top: 5px; }
.lb-place .lb-score { font-family: 'JetBrains Mono', monospace; font-size: 11px; color: var(--muted); }
.lb-block { width: 60px; border-radius: 4px 4px 0 0; background: var(--s2); border: 1px solid var(--border); }
.lb-block.b1 { height: 60px; background: var(--amberl); border-color: rgba(245,158,11,.3); }
.lb-block.b2 { height: 44px; }
.lb-block.b3 { height: 30px; }
.lb-row { display: flex; align-items: center; gap: 12px; padding: 11px 14px; background: var(--surface); border: 1px solid var(--border); border-radius: var(--r); margin-bottom: 6px; }
.lb-rank { font-family: 'JetBrains Mono', monospace; width: 28px; font-size: 12px; font-weight: 600; color: var(--hint); }
.lb-row-avatar { font-size: 20px; }
.lb-row-name { flex: 1; font-size: 13px; font-weight: 500; }
.lb-row-xp { font-family: 'JetBrains Mono', monospace; font-size: 12px; color: var(--amber); }

/* ── CLASSROOM ACTIVITIES ── */
.act-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 10px; margin-bottom: 20px; }
.act-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--rlg);
  padding: 18px 16px;
  cursor: pointer;
  transition: all .15s;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.act-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent 60%, rgba(56,189,248,.04));
  opacity: 0;
  transition: opacity .2s;
}
.act-card:hover { border-color: var(--navy); transform: translateY(-2px); box-shadow: 0 6px 24px rgba(0,0,0,.3); }
.act-card:hover::before { opacity: 1; }
.act-icon { font-size: 28px; margin-bottom: 8px; }
.act-title { font-family: 'Rajdhani', sans-serif; font-size: 15px; font-weight: 700; color: var(--text); letter-spacing: .04em; }
.act-desc { font-size: 12px; color: var(--muted); margin-top: 4px; line-height: 1.4; }