/* English Trainer — shared styles (v1) */
:root{
  --teal:#0FB8B8; --blue:#2563EB; --ink:#111827; --slate:#6B7280;
  --fog:#F3F4F6; --line:#E5E7EB; --white:#fff;
  --grad:linear-gradient(135deg,#0FB8B8,#2563EB);
  --r:14px; --sh:0 1px 3px rgba(0,0,0,.08),0 8px 24px rgba(0,0,0,.05);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:'DM Sans',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Arial,sans-serif;
  background:var(--fog); color:var(--ink); line-height:1.55;
  -webkit-font-smoothing:antialiased;
}

/* ── Auth (login) ─────────────────────────────────────────── */
.auth-body{
  min-height:100vh; display:flex; align-items:center; justify-content:center;
  padding:24px; background:var(--grad);
}
.auth-card{
  width:100%; max-width:360px; background:#fff; border-radius:18px;
  box-shadow:var(--sh); padding:34px 28px; text-align:center;
}
.auth-logo{font-size:22px; font-weight:700; letter-spacing:-.3px}
.auth-sub{color:var(--slate); font-size:14px; margin:8px 0 22px}
.auth-input{
  width:100%; border:1px solid var(--line); border-radius:12px;
  padding:13px 14px; font-family:inherit; font-size:16px; text-align:center;
}
.auth-input:focus{outline:none; border-color:var(--teal); box-shadow:0 0 0 3px rgba(15,184,184,.14)}
.auth-err{color:#B91C1C; background:#FEF2F2; border-radius:10px; padding:9px; font-size:13px; margin-top:12px}
.auth-btn{
  width:100%; margin-top:16px; padding:13px; border-radius:12px;
  background:var(--grad); color:#fff; font-weight:600; font-size:15px; cursor:pointer;
}
.auth-btn:hover{filter:brightness(1.05)}

/* ── App shell ────────────────────────────────────────────── */
.topbar{
  display:flex; align-items:center; justify-content:space-between;
  padding:16px 20px; background:#fff; border-bottom:1px solid var(--line);
}
.brand{font-weight:700; letter-spacing:-.3px}
.logout{color:var(--slate); text-decoration:none; font-size:14px; font-weight:600}
.logout:hover{color:var(--ink)}

.wrap{max-width:760px; margin:0 auto; padding:36px 20px 80px}
.h1{font-size:28px; font-weight:700; letter-spacing:-.4px; margin:0 0 8px}
.lead{color:var(--slate); font-size:16px; margin:0 0 28px; max-width:560px}

.modes{display:grid; grid-template-columns:repeat(3,1fr); gap:16px}
.mode-card{
  background:#fff; border-radius:var(--r); box-shadow:var(--sh);
  padding:22px 18px; text-align:left;
}
.mode-emoji{font-size:26px}
.mode-title{font-weight:700; font-size:17px; margin:10px 0 4px}
.mode-desc{color:var(--slate); font-size:13px; line-height:1.5}
.mode-soon{
  display:inline-block; margin-top:12px; font-size:11px; font-weight:700;
  text-transform:uppercase; letter-spacing:.4px; color:#92400E;
  background:#FEF3C7; padding:3px 9px; border-radius:999px;
}
.note{margin-top:28px; color:var(--slate); font-size:14px}

@media(max-width:640px){
  .modes{grid-template-columns:1fr}
  .h1{font-size:23px}
}

/* ── App engine UI ────────────────────────────────────────── */
.topbar .nav{display:flex; gap:4px; flex:1; justify-content:center; flex-wrap:wrap}
.topbar .nav button{
  color:var(--slate); background:transparent; border:none; cursor:pointer;
  padding:7px 12px; border-radius:999px; font-size:13px; font-weight:600; font-family:inherit;
}
.topbar .nav button:hover{background:var(--fog); color:var(--ink)}
.topbar .nav button.active{background:var(--ink); color:#fff}

.hidden{display:none !important}
.muted{color:var(--slate)}
.small{font-size:13px}
.xs{padding:6px 12px !important; font-size:12px !important; margin-top:8px}
.spread{display:flex; justify-content:space-between}
.empty{text-align:center; color:var(--slate); padding:36px 0}

.card{background:#fff; border-radius:var(--r); box-shadow:var(--sh); padding:20px; margin-bottom:16px}
.card h2{font-size:16px; margin:0 0 10px}
.card .muted.small{margin:-4px 0 14px}

.row{display:flex; gap:10px; flex-wrap:wrap}
.grow{flex:1}
.btn{padding:12px 18px; border-radius:12px; font-weight:600; font-size:14px; font-family:inherit;
  background:var(--fog); color:var(--ink); border:1px solid transparent; cursor:pointer; transition:.15s}
.btn:hover{background:#e9ebef}
.btn.primary{background:var(--grad); color:#fff}
.btn.primary:hover{filter:brightness(1.05)}
.btn.ghost{background:#fff; border:1px solid var(--line)}
.btn.ghost:hover{background:var(--fog)}
.btn.block{display:block; width:100%; text-align:center; margin-top:4px}
.btn:disabled{opacity:.45; cursor:not-allowed}

.stats{display:grid; grid-template-columns:repeat(4,1fr); gap:12px; margin-bottom:16px}
.stat{background:#fff; border-radius:var(--r); box-shadow:var(--sh); padding:15px 10px; text-align:center}
.stat .v{font-size:24px; font-weight:700; line-height:1; font-family:'DM Mono',monospace}
.stat .l{font-size:11px; color:var(--slate); margin-top:6px}
.stat.due .v{color:var(--amber,#F59E0B)} .stat.mastered .v{color:#10B981}

.filterbar{display:flex; gap:6px; flex-wrap:wrap; margin-top:14px}
.filterbar button{padding:6px 12px; border-radius:999px; font-size:12px; font-weight:600; font-family:inherit;
  background:#fff; border:1px solid var(--line); color:var(--slate); cursor:pointer}
.filterbar button.active{background:var(--ink); color:#fff; border-color:var(--ink)}

.prog-row{margin-bottom:12px}
.scorebar{height:9px; border-radius:999px; background:var(--fog); overflow:hidden; margin-top:5px}
.scorebar>i{display:block; height:100%; background:var(--grad); border-radius:999px; transition:width .4s}

.meta{display:flex; align-items:center; gap:10px; margin-bottom:12px; flex-wrap:wrap}
.diff{font-size:12px; color:var(--slate)}
.pill{display:inline-block; padding:3px 10px; border-radius:999px; font-size:11px; font-weight:700;
  letter-spacing:.3px; text-transform:uppercase; background:var(--fog); color:var(--slate)}
.pill.background{background:#EEF2FF; color:#4338CA}
.pill.luscii{background:#ECFEFF; color:#0E7490}
.pill.casestudy{background:#F0FDF4; color:#15803D}
.pill.craft{background:#FEF3C7; color:#92400E}
.pill.behavioral{background:#FCE7F3; color:#9D174D}

.qbox{font-size:21px; font-weight:600; line-height:1.4; margin:4px 0}
.tabs{display:flex; gap:6px; margin:16px 0 10px}
.tab{padding:9px 16px; border-radius:10px; font-size:13px; font-weight:600; font-family:inherit;
  background:var(--fog); color:var(--slate); border:none; cursor:pointer}
.tab.active{background:var(--blue); color:#fff}
.microw{display:flex; align-items:center; gap:12px; margin:8px 0}
.micbtn{width:52px; height:52px; border-radius:50%; background:var(--grad); color:#fff; font-size:20px;
  display:flex; align-items:center; justify-content:center; flex:0 0 auto; border:none; cursor:pointer; transition:.15s}
.micbtn.rec{background:#EF4444; animation:pulse 1.2s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(239,68,68,.5)}70%{box-shadow:0 0 0 14px rgba(239,68,68,0)}100%{box-shadow:0 0 0 0 rgba(239,68,68,0)}}
.mic-hint{font-size:13px; color:var(--slate)}
textarea{width:100%; min-height:120px; border:1px solid var(--line); border-radius:12px; padding:13px;
  font-family:inherit; font-size:15px; resize:vertical; line-height:1.5}
textarea:focus{outline:none; border-color:var(--teal); box-shadow:0 0 0 3px rgba(15,184,184,.12)}

.kp{display:flex; align-items:flex-start; gap:10px; padding:9px 0; border-bottom:1px dashed var(--line)}
.kp:last-child{border-bottom:none}
.kp .ic{flex:0 0 auto; width:22px; height:22px; border-radius:50%; display:flex; align-items:center;
  justify-content:center; font-size:13px; font-weight:700; color:#fff; margin-top:1px}
.kp.hit .ic{background:#10B981} .kp.miss .ic{background:#D1D5DB} .kp.miss span{color:var(--slate)}

.model{background:#F8FAFC; border:1px solid var(--line); border-radius:12px; padding:15px;
  font-size:15px; line-height:1.65; white-space:pre-wrap}
.model.plain{background:#fff}
.model mark{background:#FEF08A; padding:0 2px; border-radius:3px}
.blank{display:inline-block; background:#E5E7EB; color:transparent; border-radius:3px; letter-spacing:1px}

details{margin-top:10px}
summary{cursor:pointer; font-weight:600; font-size:14px; color:var(--blue); padding:6px 0}

.grade{display:grid; grid-template-columns:repeat(4,1fr); gap:8px; margin-top:6px}
.grade button{padding:11px 6px; border-radius:12px; font-weight:700; font-size:13px; color:#fff; border:none; cursor:pointer; font-family:inherit}
.grade button small{display:block; font-weight:400; font-size:11px; opacity:.9}
.g-forgot{background:#EF4444} .g-hard{background:#F59E0B} .g-good{background:#10B981} .g-easy{background:#2563EB}

.qitem{border:1px solid var(--line); border-radius:12px; padding:13px 15px; margin-bottom:10px; cursor:pointer; transition:.15s}
.qitem:hover{border-color:var(--teal); box-shadow:var(--sh)}
.qitem .t{font-weight:600; font-size:15px; margin-top:6px}
.boxdot{display:inline-block; width:10px; height:10px; border-radius:50%; margin-left:6px; vertical-align:middle}

.toast{position:fixed; bottom:24px; left:50%; transform:translateX(-50%); background:var(--ink); color:#fff;
  padding:12px 22px; border-radius:999px; font-size:14px; font-weight:600; box-shadow:var(--sh);
  opacity:0; transition:.25s; pointer-events:none; z-index:50}
.toast.show{opacity:1}

@media(max-width:640px){
  .stats{grid-template-columns:repeat(2,1fr)}
  .grade{grid-template-columns:repeat(2,1fr)}
  .qbox{font-size:18px}
  .topbar{flex-wrap:wrap}
  .topbar .nav{order:3; width:100%; margin-top:8px}
}

/* ── multi-mode additions ─────────────────────────────────── */
.modegrid{display:grid; grid-template-columns:repeat(auto-fit,minmax(120px,1fr)); gap:10px; margin-bottom:16px}
.mode-card{background:#fff; border:1px solid var(--line); border-radius:14px; padding:14px 10px; cursor:pointer;
  display:flex; flex-direction:column; align-items:center; gap:3px; font-family:inherit; transition:.15s}
.mode-card:hover{border-color:var(--teal)}
.mode-card.on{border-color:transparent; background:var(--grad); color:#fff; box-shadow:var(--sh)}
.mode-card.on .mc-meta{color:rgba(255,255,255,.85)}
.mc-emoji{font-size:22px} .mc-label{font-weight:700; font-size:14px} .mc-meta{font-size:11px; color:var(--slate)}

.ring{display:inline-flex; align-items:center; justify-content:center; width:34px; height:34px; border-radius:50%;
  font-size:11px; font-weight:700; color:var(--ink)}
.ring b{display:flex; align-items:center; justify-content:center; width:26px; height:26px; border-radius:50%; background:#fff; font-family:'DM Mono',monospace}

.ctx{font-style:italic; color:var(--slate); font-size:14px; margin-bottom:6px}
.cue{margin:10px 0 0; padding-left:20px; color:var(--ink)} .cue li{margin:3px 0}
.vn{background:#FFFBEB; border:1px solid #FDE68A; border-radius:10px; padding:8px 12px; font-size:14px; margin:10px 0 4px}
.sub{font-size:12px; font-weight:700; text-transform:uppercase; letter-spacing:.4px; color:var(--slate); margin:16px 0 6px}
.alt{background:#fff; border:1px solid var(--line); border-radius:10px; padding:10px 13px; font-size:14px; margin-bottom:8px}
.callout{background:#F0FDFA; border-left:3px solid var(--teal); border-radius:8px; padding:11px 14px; font-size:14px; line-height:1.6; margin:12px 0}
.callout b{display:block; font-size:12px; text-transform:uppercase; letter-spacing:.3px; color:#0E7490; margin-bottom:2px}
.chips{display:flex; flex-wrap:wrap; gap:7px}
.chip{background:var(--fog); border-radius:999px; padding:5px 12px; font-size:13px; font-weight:500}
.bullets{margin:0; padding-left:20px} .bullets li{margin:4px 0; font-size:14px}
.check{display:flex; align-items:flex-start; gap:9px; padding:7px 0; font-size:14px; cursor:pointer}
.check input{margin-top:3px}
.grade2{display:grid; grid-template-columns:1fr 1fr; gap:8px}
.grade2 button{padding:13px; border-radius:12px; font-weight:700; font-size:14px; color:#fff; border:none; cursor:pointer; font-family:inherit}

.setrow{display:flex; align-items:center; justify-content:space-between; gap:12px; padding:9px 0;
  border-bottom:1px dashed var(--line); font-size:14px; font-weight:500}
.setrow:last-child{border-bottom:none}
.setrow input[type=number]{width:80px; border:1px solid var(--line); border-radius:8px; padding:7px 9px; font-family:inherit; font-size:14px; text-align:center}
.setrow input[type=range]{width:130px}
.setrow input[type=checkbox]{width:20px; height:20px}
.modebar button{white-space:nowrap}