/* DeutschAI Exam Coach — Design system V2 "light vivid"
   Lai Toey (nền băng xanh #F4F8FD, tiêu đề đậm khít, thẻ bo lớn bóng mềm,
   khối điểm tint oải hương, chip điểm tiêu chí) × engchi (aurora pastel chuyển
   động chậm, kính mờ backdrop-filter, quầng sáng thương hiệu, spotlight theo
   chuột, hiện dần trượt lên). Chỉ học phong cách — không sao chép nội dung.
   Font: Bricolage Grotesque (tiêu đề/số lớn) + Be Vietnam Pro (nội dung),
   đều hỗ trợ tiếng Việt và ä ö ü ß. */
:root{
  --bg:#F4F8FD;
  --surface:rgba(255,255,255,.78);
  --surface-strong:rgba(255,255,255,.92);
  --surface-2:#E8EDF7;
  --ink:#101E33;
  --ink-2:#3D4E66;
  --muted:#7186A0;
  --line:rgba(16,30,51,.10);
  --primary:#16233A;
  --primary-soft:#E8EDF7;
  --accent:#6366F1;
  --accent-2:#8B5CF6;
  --accent-bright:#2FBF9B;
  --accent-soft:#EFEAFF;
  --grad:linear-gradient(120deg,#6366F1,#8B5CF6);
  --grad-cool:linear-gradient(90deg,#6366F1,#2FBF9B);
  --success:#1F9D63;
  --success-soft:#E1F6EC;
  --warning:#C77F0A;
  --warning-soft:#FCF0DA;
  --error:#D64533;
  --error-soft:#FDECE9;
  --sk-lesen:#6366F1;
  --sk-hoeren:#0EA5E9;
  --sk-schreiben:#8B5CF6;
  --sk-sprechen:#10B981;
  --radius:20px;
  --radius-sm:13px;
  --shadow:0 10px 30px rgba(31,41,84,.08),0 2px 8px rgba(31,41,84,.05);
  --shadow-lg:0 24px 60px rgba(31,41,84,.16),0 4px 16px rgba(31,41,84,.08);
  --glass-border:1px solid rgba(255,255,255,.65);
  --tabbar-h:64px;
  --font-display:'Bricolage Grotesque','Be Vietnam Pro',system-ui,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;color:var(--ink);background:var(--bg);
  font-family:'Be Vietnam Pro',system-ui,-apple-system,'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif;
  font-size:15.5px;line-height:1.55;-webkit-font-smoothing:antialiased;
}
/* --- Aurora pastel trôi chậm (chỉ transform) + lưới mờ --- */
body::before{
  content:'';position:fixed;inset:-25%;z-index:-2;pointer-events:none;
  background:
    radial-gradient(620px 480px at 16% 10%,rgba(99,102,241,.34),transparent 65%),
    radial-gradient(720px 540px at 84% 6%,rgba(139,124,255,.30),transparent 65%),
    radial-gradient(660px 540px at 78% 90%,rgba(47,191,155,.26),transparent 65%),
    radial-gradient(520px 420px at 10% 86%,rgba(255,183,165,.22),transparent 65%);
  filter:blur(52px) saturate(1.15);
  animation:aurora 34s ease-in-out infinite alternate;
}
@keyframes aurora{
  from{transform:translate3d(-2%,-1%,0) scale(1)}
  to{transform:translate3d(2.5%,2%,0) scale(1.07)}
}
body::after{
  content:'';position:fixed;inset:0;z-index:-1;pointer-events:none;
  background-image:
    linear-gradient(rgba(16,30,51,.032) 1px,transparent 1px),
    linear-gradient(90deg,rgba(16,30,51,.032) 1px,transparent 1px);
  background-size:44px 44px;
  -webkit-mask-image:radial-gradient(ellipse at 50% 0%,black 25%,transparent 88%);
  mask-image:radial-gradient(ellipse at 50% 0%,black 25%,transparent 88%);
}
button{font:inherit;cursor:pointer}
input,select,textarea{font:inherit}
a{color:var(--accent);text-decoration:none;font-weight:600}
.hidden{display:none!important}
h1{font-family:var(--font-display);font-size:1.85rem;line-height:1.15;letter-spacing:-.015em;margin:0 0 .4rem;font-weight:800}
h2{font-family:var(--font-display);font-size:1.28rem;letter-spacing:-.01em;margin:1.5rem 0 .65rem;font-weight:750}
h3{font-family:var(--font-display);font-size:1.05rem;margin:1rem 0 .4rem;font-weight:700}
p{margin:.35rem 0}
.small{font-size:.85rem}
.muted{color:var(--muted)}
.center{text-align:center}
.grad-text{background:linear-gradient(92deg,#6366F1,#8B5CF6 55%,#2FBF9B);-webkit-background-clip:text;background-clip:text;color:transparent}

/* ---------- buttons & chips ---------- */
.btn{
  position:relative;overflow:hidden;
  display:inline-flex;align-items:center;justify-content:center;gap:.45rem;
  border:1.5px solid var(--primary);background:var(--primary);color:#fff;
  padding:.62rem 1.3rem;border-radius:999px;font-weight:600;
  transition:transform .12s,box-shadow .2s,background .15s,border-color .15s;
}
.btn:hover{background:#22334f}
.btn:active{transform:scale(.98)}
.btn:disabled{opacity:.45;cursor:not-allowed}
.btn-primary{background:var(--grad);border-color:transparent;box-shadow:0 10px 24px rgba(99,102,241,.35)}
.btn-primary:hover{background:var(--grad);box-shadow:0 14px 30px rgba(99,102,241,.45)}
.btn-primary::after{
  content:'';position:absolute;top:0;left:-80%;width:50%;height:100%;
  background:linear-gradient(105deg,transparent,rgba(255,255,255,.45),transparent);
  transform:skewX(-20deg);transition:left .55s ease;
}
.btn-primary:hover::after{left:130%}
.btn-ghost{background:transparent;color:var(--primary);border-color:transparent}
.btn-ghost:hover{background:rgba(99,102,241,.08)}
.btn-light{background:var(--surface-strong);color:var(--primary);border-color:var(--line);backdrop-filter:blur(10px)}
.btn-light:hover{border-color:var(--accent);color:var(--accent)}
.btn-sm{padding:.42rem .95rem;font-size:.9rem}
.btn-lg{padding:.88rem 1.7rem;font-size:1.03rem}
.btn-block{width:100%}
.btn-danger{background:linear-gradient(120deg,#D64533,#C23325);border-color:transparent;box-shadow:0 10px 22px rgba(214,69,51,.28)}
.icon-btn{background:none;border:none;font-size:1.05rem;color:var(--ink-2);padding:.35rem .5rem;border-radius:10px}
.icon-btn:hover{background:rgba(99,102,241,.08)}
.chip{
  display:inline-flex;align-items:center;gap:.35rem;border:1px solid rgba(255,255,255,.6);
  background:var(--surface);backdrop-filter:blur(10px);border-radius:999px;padding:.3rem .8rem;font-size:.85rem;font-weight:600;color:var(--ink);
}
.chip-credit{border-color:rgba(99,102,241,.25);background:var(--accent-soft);color:#5B54D6}
.tag{display:inline-block;background:var(--primary-soft);color:var(--ink-2);border-radius:7px;padding:.1rem .55rem;font-size:.78rem;font-weight:600;margin:.1rem .15rem .1rem 0}
.tag-teal{background:#DDF5EC;color:#0B7A5C}
.tag-amber{background:var(--warning-soft);color:#9A6605}
.tag-red{background:var(--error-soft);color:var(--error)}
.tag-green{background:var(--success-soft);color:var(--success)}
.badge-soon{background:var(--warning-soft);color:#9A6605;border-radius:7px;padding:.05rem .5rem;font-size:.75rem;font-weight:700}

/* ---------- layout ---------- */
.app-shell{max-width:1120px;margin:0 auto;padding:0 16px calc(var(--tabbar-h) + 44px)}
.view{padding-top:20px;outline:none}
.view.anim-in>*{animation:riseIn .45s cubic-bezier(.22,.8,.36,1) both}
.view.anim-in>*:nth-child(2){animation-delay:.05s}
.view.anim-in>*:nth-child(3){animation-delay:.1s}
.view.anim-in>*:nth-child(4){animation-delay:.15s}
.view.anim-in>*:nth-child(5){animation-delay:.2s}
.view.anim-in>*:nth-child(6){animation-delay:.25s}
.view.anim-in>*:nth-child(n+7){animation-delay:.3s}
@keyframes riseIn{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}
.topbar{
  position:sticky;top:0;z-index:40;background:rgba(244,248,253,.75);backdrop-filter:blur(16px) saturate(1.4);
  display:flex;align-items:center;justify-content:space-between;padding:12px 2px;
}
.brand{display:flex;align-items:center;gap:.65rem}
.brand-center{justify-content:flex-start;margin-bottom:1.1rem}
.brand-mark{
  width:42px;height:42px;border-radius:13px;background:var(--grad);color:#fff;
  display:flex;align-items:center;justify-content:center;font-family:var(--font-display);font-weight:800;font-size:1.35rem;flex:none;
  box-shadow:0 8px 20px rgba(99,102,241,.4);
}
.brand-name{font-family:var(--font-display);font-weight:800;font-size:1.08rem;line-height:1.15;letter-spacing:-.01em}
.brand-name span{background:linear-gradient(92deg,#6366F1,#8B5CF6);-webkit-background-clip:text;background-clip:text;color:transparent}
.brand-tag{font-size:.8rem;color:var(--muted)}
.topbar-right{display:flex;align-items:center;gap:.55rem}
.avatar-btn{
  width:42px;height:42px;border-radius:50%;color:#5B54D6;
  background:linear-gradient(var(--surface-strong),var(--surface-strong)) padding-box,var(--grad-cool) border-box;
  border:2px solid transparent;font-weight:800;font-size:1rem;
}
.tabbar{
  position:fixed;left:50%;transform:translateX(-50%);bottom:12px;z-index:50;
  width:calc(100% - 20px);max-width:1100px;height:var(--tabbar-h);
  background:rgba(255,255,255,.8);backdrop-filter:blur(18px) saturate(1.5);
  border:var(--glass-border);border-radius:22px;
  display:flex;justify-content:space-around;align-items:stretch;
  box-shadow:var(--shadow-lg);
}
.tab{
  flex:1;background:none;border:none;color:var(--muted);font-size:.78rem;font-weight:600;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;
  margin:6px 3px;border-radius:16px;transition:background .2s,color .2s;
}
.tab-ic{font-size:1.25rem;line-height:1}
.tab.active{color:var(--accent);background:rgba(99,102,241,.13)}
.tab.active .tab-ic{color:var(--accent)}
.coach-fab{
  position:fixed;right:16px;bottom:calc(var(--tabbar-h) + 30px);z-index:60;
  display:flex;align-items:center;gap:.45rem;background:var(--grad);color:#fff;border:none;
  border-radius:999px;padding:.72rem 1.1rem;font-weight:700;
  box-shadow:0 14px 34px rgba(99,102,241,.5),0 0 0 6px rgba(139,92,246,.12);
  transition:transform .15s,box-shadow .2s;
}
.coach-fab:hover{transform:translateY(-2px);box-shadow:0 18px 40px rgba(99,102,241,.55),0 0 0 8px rgba(139,92,246,.14)}

/* ---------- cards & grids ---------- */
.card{
  background:var(--surface);backdrop-filter:blur(16px) saturate(1.35);
  border:var(--glass-border);border-radius:var(--radius);box-shadow:var(--shadow);
  padding:20px;margin-bottom:14px;
}
.card-click{cursor:pointer;transition:transform .15s,box-shadow .2s;position:relative}
.card-click:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)}
@media(hover:hover){
  .card-click::after,.spot::after{
    content:'';position:absolute;inset:0;border-radius:inherit;pointer-events:none;
    background:radial-gradient(260px circle at var(--mx,50%) var(--my,50%),rgba(99,102,241,.13),transparent 65%);
    opacity:0;transition:opacity .25s;
  }
  .card-click:hover::after,.spot:hover::after{opacity:1}
}
.grid{display:grid;gap:14px}
.grid-2{grid-template-columns:1fr}
.grid-3{grid-template-columns:1fr}
@media(min-width:760px){
  .grid-2{grid-template-columns:1fr 1fr}
  .grid-3{grid-template-columns:repeat(3,1fr)}
  .grid-4{grid-template-columns:repeat(4,1fr)}
}
.hero-card{
  position:relative;overflow:hidden;color:#fff;border:1px solid rgba(255,255,255,.18);
  background:linear-gradient(135deg,rgba(17,25,48,.96),rgba(43,35,96,.94));
  box-shadow:0 24px 50px rgba(23,25,66,.35);
}
.hero-card::before{
  content:'';position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(340px 220px at 88% -10%,rgba(47,191,155,.4),transparent 65%),
    radial-gradient(380px 260px at -10% 110%,rgba(99,102,241,.5),transparent 65%),
    radial-gradient(220px 160px at 55% 120%,rgba(139,92,246,.35),transparent 65%);
}
.hero-card>*{position:relative}
.hero-card .muted{color:#B9C6E4}
.progress{height:9px;background:rgba(16,30,51,.09);border-radius:99px;overflow:hidden}
.hero-card .progress{background:rgba(255,255,255,.16)}
.progress>i{display:block;height:100%;background:var(--grad-cool);border-radius:99px;animation:barIn .9s cubic-bezier(.22,.8,.36,1) both}
@keyframes barIn{from{width:0}}
.progress.thin{height:6px}
.bar-wrap{margin:.45rem 0}
.bar-label{display:flex;justify-content:space-between;font-size:.88rem;margin-bottom:.25rem}
.ring{
  --p:0;width:108px;height:108px;border-radius:50%;flex:none;
  background:conic-gradient(from 210deg,#6366F1 0%,#2FBF9B calc(var(--p)*1%),rgba(255,255,255,.15) calc(var(--p)*1%));
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 0 34px rgba(99,102,241,.45);
}
.ring>i{width:84px;height:84px;border-radius:50%;background:#1B2440;display:flex;flex-direction:column;align-items:center;justify-content:center;font-style:normal}
.ring b{font-family:var(--font-display);font-size:1.5rem;line-height:1}
.ring small{font-size:.66rem;color:#B9C6E4;letter-spacing:.08em}
.ring.light{background:conic-gradient(from 210deg,#6366F1 0%,#8B5CF6 calc(var(--p)*1%),#E4EAF4 calc(var(--p)*1%));box-shadow:0 0 26px rgba(99,102,241,.25)}
.ring.light>i{background:#fff}
.ring.light small{color:var(--muted)}

/* ---------- Toey-style result blocks ---------- */
.score-block{
  background:linear-gradient(160deg,#F1ECFF,#E9E2FF);border:1px solid rgba(139,92,246,.18);
  border-radius:18px;padding:18px 20px;text-align:center;
}
.score-block .sb-label{font-size:.85rem;color:var(--ink-2);font-weight:600;letter-spacing:.02em}
.score-block .sb-num{
  font-family:var(--font-display);font-size:2.5rem;font-weight:800;line-height:1.1;letter-spacing:-.02em;
  background:linear-gradient(120deg,#6366F1,#8B5CF6);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.score-block .sb-sub{font-size:.85rem;color:var(--ink-2)}
.crit-chips{display:grid;grid-template-columns:1fr;gap:10px}
@media(min-width:560px){.crit-chips{grid-template-columns:1fr 1fr}}
.crit-chip{
  display:flex;align-items:center;justify-content:space-between;gap:.6rem;
  background:rgba(232,237,247,.85);border-radius:14px;padding:11px 15px;
}
.crit-chip .cc-label{font-size:.92rem;color:var(--ink-2);font-weight:600}
.crit-chip .cc-val{font-family:var(--font-display);font-size:1.18rem;font-weight:800;color:#7C5CFF;white-space:nowrap}
.coach-strip{
  position:relative;background:linear-gradient(90deg,rgba(239,234,255,.95),rgba(239,234,255,.5));
  border-radius:14px;padding:13px 16px 13px 20px;overflow:hidden;
}
.coach-strip::before{content:'';position:absolute;left:0;top:0;bottom:0;width:4px;background:linear-gradient(180deg,#6366F1,#8B5CF6,#2FBF9B)}
.coach-strip.warn{background:linear-gradient(90deg,rgba(252,240,218,.95),rgba(252,240,218,.5))}
.coach-strip.warn::before{background:linear-gradient(180deg,#D9930D,#C77F0A)}

/* ---------- forms ---------- */
.field{margin-bottom:.95rem}
.field label{display:block;font-weight:600;font-size:.92rem;margin-bottom:.35rem}
.field input,.field select,.field textarea{
  width:100%;border:1.5px solid var(--line);border-radius:var(--radius-sm);
  padding:.68rem .85rem;background:var(--surface-strong);color:var(--ink);
}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 4px rgba(99,102,241,.16)}
.switch-row{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:.65rem 0;border-bottom:1px solid var(--line)}
.switch-row:last-child{border-bottom:none}
.switch-row input[type=checkbox]{width:20px;height:20px;accent-color:var(--accent);flex:none}
textarea.editor{min-height:220px;line-height:1.7;resize:vertical}
.choice-grid{display:grid;gap:10px}
.choice{
  text-align:left;background:var(--surface);backdrop-filter:blur(12px);border:1.5px solid var(--line);border-radius:16px;
  padding:14px 16px;width:100%;display:block;transition:border-color .15s,background .15s,transform .12s;
}
.choice:hover{border-color:var(--accent);transform:translateY(-1px)}
.choice.selected{border-color:var(--accent);background:rgba(239,234,255,.8);box-shadow:0 8px 22px rgba(99,102,241,.14)}
.choice b{display:block;font-size:1rem}
.choice .sub{color:var(--muted);font-size:.87rem}
.opt{
  display:flex;gap:.6rem;align-items:flex-start;width:100%;text-align:left;background:var(--surface);
  border:1.5px solid var(--line);border-radius:var(--radius-sm);padding:.72rem .88rem;margin-bottom:.55rem;
  transition:border-color .15s,background .15s;
}
.opt:hover{border-color:var(--accent)}
.opt.selected{border-color:var(--accent);background:rgba(239,234,255,.85)}
.opt.correct{border-color:var(--success);background:var(--success-soft)}
.opt.wrong{border-color:var(--error);background:var(--error-soft)}
.opt .opt-key{
  flex:none;width:27px;height:27px;border-radius:50%;background:var(--surface-2);
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:.85rem;
}
.opt.selected .opt-key{background:var(--grad);color:#fff}

/* ---------- auth ---------- */
.auth-shell{min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:30px 16px}
.auth-layout{display:grid;gap:30px;width:100%;max-width:1120px;align-items:center}
@media(min-width:960px){.auth-layout{grid-template-columns:1.02fr .98fr}}
.auth-showcase h1{font-size:2.55rem;line-height:1.08;margin-bottom:.7rem}
.auth-showcase .lead{font-size:1.05rem;color:var(--ink-2);max-width:46ch}
@media(max-width:959px){
  .auth-showcase h1{font-size:1.95rem}
  .auth-showcase .lead{font-size:.98rem}
}
@media(max-width:639px){.preview-card{display:none}}
.preview-card{
  margin-top:22px;background:rgba(255,255,255,.88);backdrop-filter:blur(18px) saturate(1.4);
  border:var(--glass-border);border-radius:22px;box-shadow:var(--shadow-lg);padding:18px 20px;max-width:520px;
}
.preview-card .pv-head{display:flex;gap:6px;align-items:center;margin-bottom:12px}
.preview-card .pv-dot{width:11px;height:11px;border-radius:50%}
.preview-card .pv-url{margin-left:8px;font-size:.8rem;color:var(--muted)}
.auth-card{
  background:var(--surface);backdrop-filter:blur(18px) saturate(1.4);
  border:var(--glass-border);border-radius:24px;box-shadow:var(--shadow-lg);padding:28px;width:100%;
}
.auth-shell.ob-mode .auth-showcase{display:none}
.auth-shell.ob-mode .auth-layout{grid-template-columns:1fr;max-width:760px}
.auth-shell.ob-mode .auth-card{max-width:760px;margin:0 auto}
.auth-foot{text-align:center;color:var(--muted);font-size:.82rem;margin-top:18px;max-width:640px}
.step-dots{display:flex;gap:6px;margin-bottom:18px}
.step-dots i{height:6px;flex:1;border-radius:99px;background:rgba(16,30,51,.10)}
.step-dots i.on{background:var(--grad)}

/* ---------- lists / tasks ---------- */
.task-row{
  display:flex;gap:.85rem;align-items:center;background:var(--surface);backdrop-filter:blur(14px);
  border:var(--glass-border);border-radius:18px;padding:13px 15px;margin-bottom:10px;box-shadow:var(--shadow);
}
.task-row .task-ic{width:44px;height:44px;flex:none;border-radius:13px;background:var(--accent-soft);display:flex;align-items:center;justify-content:center;font-size:1.15rem}
.task-row.done{opacity:.62}
.task-row.done .task-title{text-decoration:line-through}
.task-main{flex:1;min-width:0}
.task-title{font-weight:600}
.check-btn{width:35px;height:35px;flex:none;border-radius:50%;border:2px solid var(--line);background:var(--surface-strong);color:var(--success);font-weight:800;transition:background .15s}
.check-btn.done{background:var(--success);border-color:var(--success);color:#fff}
.list-row{display:flex;align-items:center;gap:.7rem;padding:.7rem 0;border-bottom:1px solid var(--line)}
.list-row:last-child{border-bottom:none}

/* ---------- exam / practice ---------- */
.passage{background:rgba(255,253,246,.88);backdrop-filter:blur(10px);border:1px solid rgba(217,164,65,.25);border-radius:var(--radius);padding:18px 20px;line-height:1.75;margin-bottom:14px;white-space:pre-line;box-shadow:var(--shadow)}
.timer{font-family:var(--font-display);font-variant-numeric:tabular-nums;font-weight:800;font-size:1.08rem}
.timer.warn{color:var(--error)}
.explain{background:rgba(47,191,155,.10);border:1px solid rgba(47,191,155,.35);border-radius:var(--radius-sm);padding:12px 15px;margin:.6rem 0}
.explain.warnbox{background:var(--warning-soft);border-color:#EFD9A8}
.score-hero{display:flex;gap:18px;align-items:center;flex-wrap:wrap}
.score-big{font-family:var(--font-display);font-size:2rem;font-weight:800;letter-spacing:-.01em}
table.tbl{width:100%;border-collapse:collapse;font-size:.92rem}
table.tbl th,table.tbl td{border-bottom:1px solid var(--line);padding:.55rem .45rem;text-align:left;vertical-align:top}
table.tbl th{color:var(--ink-2);font-weight:700}
.err-item{border-left:4px solid var(--error);background:rgba(253,236,233,.85);border-radius:0 var(--radius-sm) var(--radius-sm) 0;padding:11px 13px;margin-bottom:10px}
.err-item .wrong-text{color:var(--error);text-decoration:line-through}
.err-item .right-text{color:var(--success);font-weight:600}
mark.hl-wrong{background:#F8CFC7;border-radius:3px;padding:0 2px}
mark.hl-good{background:#CDEEDA;border-radius:3px;padding:0 2px}
.wordbank{display:flex;flex-wrap:wrap;gap:8px;margin:.6rem 0}
.wordchip{border:1.5px solid var(--line);background:var(--surface-strong);border-radius:999px;padding:.36rem .85rem;font-weight:600}
.wordchip:hover{border-color:var(--accent)}
.wordchip.used{opacity:.35;pointer-events:none}
.answer-line{min-height:46px;border:1.5px dashed rgba(99,102,241,.4);border-radius:var(--radius-sm);padding:.5rem .7rem;display:flex;flex-wrap:wrap;gap:6px;align-items:center;background:rgba(255,253,246,.85)}
.flashcard{
  min-height:220px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:.4rem;
  text-align:center;cursor:pointer;padding:24px;
}
.flashcard .fc-word{font-family:var(--font-display);font-size:2rem;font-weight:800;letter-spacing:-.01em}
.flashcard .fc-hint{color:var(--muted);font-size:.85rem}
.rec-dot{width:12px;height:12px;border-radius:50%;background:var(--error);display:inline-block;animation:pulse 1s infinite}
@keyframes pulse{50%{opacity:.25}}
audio{width:100%;margin-top:.5rem}

/* ---------- charts ---------- */
.bars{display:flex;align-items:flex-end;gap:10px;height:124px;padding-top:8px}
.bars .bar-col{flex:1;display:flex;flex-direction:column;align-items:center;gap:4px;height:100%;justify-content:flex-end}
.bars .bar{width:70%;max-width:44px;background:linear-gradient(180deg,#8B5CF6,#6366F1);border-radius:7px 7px 0 0;min-height:3px}
.bars .bar.alt{background:linear-gradient(180deg,#2FBF9B,#0EA5E9)}
.bars .bar-lab{font-size:.72rem;color:var(--muted);text-align:center}

/* ---------- coach panel ---------- */
.coach-panel{
  position:fixed;z-index:80;right:12px;left:12px;bottom:calc(var(--tabbar-h) + 24px);
  max-height:72vh;display:flex;flex-direction:column;background:rgba(255,255,255,.9);
  backdrop-filter:blur(20px) saturate(1.4);
  border:var(--glass-border);border-radius:22px;box-shadow:var(--shadow-lg);overflow:hidden;
}
@media(min-width:760px){.coach-panel{left:auto;width:410px;right:20px}}
.coach-head{display:flex;justify-content:space-between;align-items:flex-start;padding:15px 17px 8px}
.coach-head strong{font-family:var(--font-display);font-size:1.05rem}
.coach-context{font-size:.8rem;color:var(--muted)}
.coach-quick{display:flex;gap:6px;flex-wrap:wrap;padding:0 16px 10px}
.coach-quick button{border:1px solid var(--line);background:rgba(232,237,247,.8);border-radius:999px;padding:.32rem .75rem;font-size:.82rem;font-weight:600}
.coach-quick button:hover{border-color:var(--accent);color:var(--accent)}
.coach-messages{overflow-y:auto;padding:4px 16px 12px;display:flex;flex-direction:column;gap:8px}
.msg{max-width:88%;padding:.62rem .85rem;border-radius:16px;font-size:.93rem;white-space:pre-line}
.msg.bot{background:#EDF1F8;align-self:flex-start;border-bottom-left-radius:5px}
.msg.user{background:var(--grad);color:#fff;align-self:flex-end;border-bottom-right-radius:5px}
.coach-form{display:flex;gap:8px;padding:12px 16px;border-top:1px solid var(--line)}
.coach-form input{flex:1;border:1.5px solid var(--line);border-radius:999px;padding:.55rem .9rem;background:var(--surface-strong)}

/* ---------- modal / toast ---------- */
.modal-backdrop{position:fixed;inset:0;background:rgba(18,24,54,.45);backdrop-filter:blur(4px);z-index:90;display:flex;align-items:flex-end;justify-content:center;padding:0}
@media(min-width:760px){.modal-backdrop{align-items:center;padding:20px}}
.modal{background:rgba(255,255,255,.95);backdrop-filter:blur(18px);border-radius:22px 22px 0 0;width:100%;max-width:560px;max-height:88vh;overflow-y:auto;padding:24px}
@media(min-width:760px){.modal{border-radius:22px}}
.toast{
  position:fixed;top:14px;left:50%;transform:translateX(-50%) translateY(-8px);z-index:120;
  background:rgba(22,35,58,.94);color:#fff;border-radius:999px;padding:.62rem 1.15rem;font-size:.9rem;font-weight:600;
  box-shadow:var(--shadow-lg);
  opacity:0;pointer-events:none;transition:opacity .25s,transform .25s;max-width:92vw;text-align:center;
}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
.sandbox-banner{background:var(--warning-soft);border:1px solid #EFD9A8;border-radius:var(--radius-sm);padding:11px 15px;font-size:.9rem;margin-bottom:12px}
.price{font-family:var(--font-display);font-size:1.55rem;font-weight:800;letter-spacing:-.01em}
.kv{display:flex;justify-content:space-between;gap:1rem;padding:.38rem 0;border-bottom:1px dashed var(--line)}
.kv:last-child{border-bottom:none}
.flex{display:flex;align-items:center;gap:.6rem}
.flex-between{display:flex;align-items:center;justify-content:space-between;gap:.6rem}
.flex-wrap{flex-wrap:wrap}
.mt{margin-top:12px}.mb{margin-bottom:12px}
.german{font-size:1.02rem}
.divider{border:none;border-top:1px solid var(--line);margin:16px 0}
details.faq{border:1px solid var(--line);border-radius:var(--radius-sm);padding:11px 15px;margin-bottom:8px;background:var(--surface);backdrop-filter:blur(10px)}
details.faq summary{cursor:pointer;font-weight:600}

/* ---------- reduced motion ---------- */
@media (prefers-reduced-motion: reduce){
  body::before{animation:none}
  .view.anim-in>*{animation:none}
  .progress>i{animation:none}
  .rec-dot{animation:none}
  html{scroll-behavior:auto}
  *{transition-duration:.01ms!important}
}