:root {
  --paper: #f6f8fb;
  --surface: #ffffff;
  --ink: #10233f;
  --muted: #66758a;
  --line: #dfe6ef;
  --blue: #2968ff;
  --blue-dark: #174bc8;
  --amber: #ffc64d;
  --amber-soft: #fff4d5;
  --navy: #102846;
  --shadow: 0 18px 48px rgba(20, 45, 82, 0.08);
}

* { box-sizing: border-box; }
html { background: var(--paper); }
body {
  margin: 0;
  background: radial-gradient(circle at 85% 5%, rgba(41, 104, 255, 0.08), transparent 28rem), var(--paper);
  color: var(--ink);
  font-family: var(--font-geist-sans), Arial, sans-serif;
}
a { color: inherit; text-decoration: none; }
input, select { font: inherit; }
button { font: inherit; }
button:focus-visible { outline: 3px solid rgba(41, 104, 255, 0.35); outline-offset: 2px; }
.app-shell { min-height: 100vh; }
.sidebar {
  position: fixed; inset: 0 auto 0 0; z-index: 30; width: 258px;
  display: flex; flex-direction: column; padding: 28px 18px 20px;
  background: rgba(255, 255, 255, 0.92); border-right: 1px solid var(--line); backdrop-filter: blur(18px);
}
.brand-row { display: flex; align-items: center; gap: 12px; padding: 0 8px 26px; }
.brand-mark {
  width: 40px; height: 40px; display: grid; place-items: center; border-radius: 12px;
  background: var(--blue); color: white; font-size: 24px; font-weight: 700; box-shadow: 0 8px 18px rgba(41,104,255,.24);
}
.brand-name { margin: 0; font-size: 17px; font-weight: 760; letter-spacing: -.02em; }
.brand-caption { margin: 2px 0 0; color: var(--muted); font-size: 12px; }
.side-nav { display: grid; gap: 6px; }
.nav-item {
  width: 100%; display: flex; align-items: center; gap: 12px; min-height: 46px; padding: 0 13px;
  border: 0; border-radius: 12px; color: #526176; background: transparent; cursor: pointer; text-align: left;
  font-size: 14px; font-weight: 600; transition: .18s ease;
}
.nav-item:hover { background: #f0f4fa; color: var(--ink); }
.nav-item.active { color: var(--blue); background: #edf3ff; }
.privacy-note {
  margin-top: auto; display: flex; gap: 10px; padding: 13px; color: #4d5d70;
  background: #f4f7fb; border: 1px solid #e5eaf1; border-radius: 14px;
}
.privacy-note div { display: grid; gap: 2px; }
.privacy-note strong { font-size: 13px; }
.privacy-note span { font-size: 11px; color: var(--muted); }
.profile-row {
  display: flex; align-items: center; gap: 10px; margin-top: 16px; padding: 10px 8px;
  border: 0; background: transparent; color: var(--ink); text-align: left; cursor: pointer;
}
.logout-form { margin: 0; }
.logout-form .profile-row { width: 100%; }
.admin-link { margin-top: 10px; text-decoration: none; }
.avatar { width: 35px; height: 35px; border-radius: 50%; display: grid; place-items: center; background: var(--amber); font-weight: 750; }
.profile-copy { display: grid; gap: 2px; flex: 1; }
.profile-copy strong { font-size: 13px; }
.profile-copy small { color: var(--muted); font-size: 11px; }
.main-content { margin-left: 258px; padding: 28px 38px 56px; max-width: 1540px; }
.topbar { display: flex; align-items: center; gap: 14px; margin-bottom: 30px; }
.topbar-copy { flex: 1; }
.eyebrow, .section-kicker { margin: 0; color: var(--muted); font-size: 12px; font-weight: 720; letter-spacing: .07em; text-transform: uppercase; }
.topbar h1 { margin: 3px 0 0; font-size: clamp(26px, 3vw, 36px); line-height: 1.15; letter-spacing: -.045em; }
.streak-pill { display: flex; align-items: center; gap: 7px; padding: 9px 13px; border-radius: 99px; color: #9a5d00; background: var(--amber-soft); font-size: 13px; font-weight: 700; }
.icon-button { display: grid; place-items: center; width: 42px; height: 42px; border: 1px solid var(--line); border-radius: 12px; background: white; color: var(--ink); cursor: pointer; }
.mobile-only { display: none; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 2fr) minmax(190px, .7fr) minmax(190px, .7fr); gap: 18px; }
.focus-card, .stat-card, .question-card, .activity-card { border-radius: 22px; box-shadow: var(--shadow); }
.focus-card { padding: 24px; background: var(--surface); border: 1px solid var(--line); }
.focus-head, .focus-foot, .card-heading { display: flex; justify-content: space-between; gap: 16px; align-items: flex-start; }
.focus-head h2, .card-heading h2 { margin: 7px 0 0; font-size: 21px; line-height: 1.25; letter-spacing: -.03em; }
.level-badge, .topic-chip { padding: 6px 9px; border-radius: 8px; background: #edf3ff; color: var(--blue); font-size: 12px; font-weight: 750; }
.progress-track { height: 9px; margin: 27px 0 17px; border-radius: 99px; background: #e9eef6; overflow: hidden; }
.progress-track span { display: block; height: 100%; border-radius: inherit; background: linear-gradient(90deg, var(--blue), #64a1ff); }
.focus-foot { align-items: center; }
.focus-foot p { margin: 0; color: var(--muted); font-size: 13px; }
.focus-foot strong { color: var(--ink); }
.primary-button { display: inline-flex; align-items: center; gap: 8px; padding: 11px 15px; border: 0; border-radius: 11px; background: var(--blue); color: white; font-size: 13px; font-weight: 700; cursor: pointer; }
.primary-button:hover { background: var(--blue-dark); }
.stat-card { min-height: 210px; display: flex; flex-direction: column; padding: 21px; border: 1px solid transparent; }
.navy-card { color: white; background: var(--navy); }
.navy-card .section-kicker, .navy-card > span { color: #afc3df; }
.amber-card { color: #3c2a06; background: var(--amber); }
.amber-card .section-kicker, .amber-card > span { color: #705117; }
.stat-icon { width: 38px; height: 38px; display: grid; place-items: center; margin-bottom: 19px; border-radius: 11px; background: rgba(255,255,255,.14); }
.amber-card .stat-icon { background: rgba(255,255,255,.42); }
.big-number { margin: 2px 0 0; font-size: 42px; line-height: 1; letter-spacing: -.05em; }
.stat-card > span { margin-top: 6px; font-size: 12px; }
.text-button { display: inline-flex; align-items: center; gap: 5px; align-self: flex-start; margin-top: auto; padding: 0; border: 0; background: transparent; color: var(--ink); font-size: 12px; font-weight: 750; cursor: pointer; }
.text-button.inverse { color: white; }
.content-grid { display: grid; grid-template-columns: minmax(0, 1.7fr) minmax(290px, .7fr); gap: 18px; margin-top: 18px; }
.question-card, .activity-card { padding: 25px; background: var(--surface); border: 1px solid var(--line); }
.german-question { margin: 24px 0 18px; max-width: 780px; font-size: clamp(20px, 2.2vw, 28px); line-height: 1.35; letter-spacing: -.025em; font-weight: 620; }
.answer-options { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.answer-option { display: grid; grid-template-columns: 48px minmax(0, 1fr) auto; align-items: stretch; min-height: 58px; border: 1px solid var(--line); border-radius: 11px; background: white; color: #3e4c5f; text-align: left; font-size: 13px; transition: .16s ease; }
.answer-option:hover { border-color: #a9bee3; background: #fbfcff; }
.answer-choice { display: grid; place-content: center; justify-items: center; gap: 2px; padding: 6px; border: 0; border-right: 1px solid var(--line); border-radius: 10px 0 0 10px; background: #f8f9fc; color: var(--ink); cursor: pointer; }
.answer-choice > span { width: 27px; height: 27px; display: grid; place-items: center; border-radius: 8px; background: #edf1f6; font-size: 12px; font-weight: 750; }.answer-choice > small { color: var(--muted); font-size: 8px; font-weight: 700; }.answer-choice:hover { background: #edf3ff; }.answer-choice:disabled { cursor: default; }
.explain-button { display: flex; align-items: center; gap: 8px; margin-top: 16px; padding: 10px 13px; border: 0; border-radius: 10px; background: #eef3ff; color: var(--blue-dark); font-size: 13px; font-weight: 700; cursor: pointer; }
.explain-button svg:last-child { transition: transform .2s ease; }
.explain-button svg.rotate { transform: rotate(90deg); }
.explanation-panel { margin-top: 13px; padding: 17px; border-left: 3px solid var(--blue); border-radius: 0 12px 12px 0; background: #f7f9fd; }
.translation { margin: 0 0 13px; color: #273c59; line-height: 1.6; font-size: 14px; font-style: italic; }
.learning-notes { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.learning-notes div { display: grid; gap: 4px; padding: 10px; border-radius: 9px; background: white; border: 1px solid #e8edf4; }
.learning-notes strong { font-size: 12px; }
.learning-notes span { color: var(--muted); font-size: 11px; line-height: 1.4; }
.card-heading.compact h2 { font-size: 19px; }
.week-chart { height: 155px; display: flex; align-items: flex-end; gap: 9px; margin: 24px 0 18px; }
.day { flex: 1; height: 100%; display: flex; flex-direction: column; align-items: center; gap: 7px; }
.bar { flex: 1; width: 100%; min-width: 17px; display: flex; align-items: flex-end; border-radius: 7px; background: #edf1f6; overflow: hidden; }
.bar i { display: block; width: 100%; border-radius: inherit; background: var(--blue); }
.day small { color: var(--muted); font-size: 11px; }
.activity-list { display: grid; gap: 11px; padding-top: 17px; border-top: 1px solid var(--line); }
.activity-list div { display: flex; align-items: center; gap: 9px; }
.activity-list p { margin: 0; color: var(--muted); font-size: 12px; }
.activity-list strong { color: var(--ink); }
.dot { width: 8px; height: 8px; border-radius: 50%; }
.dot.blue { background: var(--blue); }.dot.amber { background: var(--amber); }.dot.ink { background: var(--ink); }
.sidebar-scrim { display: none; }
@media (max-width: 1050px) {
  .hero-grid { grid-template-columns: 1fr 1fr; }
  .focus-card { grid-column: 1 / -1; }
  .content-grid { grid-template-columns: 1fr; }
}
@media (max-width: 760px) {
  .mobile-only { display: grid; }
  .account-button { display: none; }
  .sidebar { transform: translateX(-105%); transition: transform .22s ease; box-shadow: 20px 0 50px rgba(14,35,65,.15); }
  .sidebar.sidebar-open { transform: translateX(0); }
  .sidebar-scrim { display: block; position: fixed; inset: 0; z-index: 20; border: 0; background: rgba(11, 25, 45, .35); }
  .brand-row .icon-button { margin-left: auto; }
  .main-content { margin-left: 0; padding: 20px 18px 40px; }
  .topbar { margin-bottom: 22px; }
  .eyebrow { display: none; }
  .topbar h1 { margin: 0; font-size: 25px; }
  .streak-pill { margin-left: auto; }
  .hero-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
  .focus-card { padding: 19px; }
  .stat-card { min-height: 185px; padding: 17px; }
  .answer-options { grid-template-columns: 1fr; }
  .learning-notes { grid-template-columns: 1fr; }
}

.loading-screen { min-height: 70vh; display: grid; place-content: center; justify-items: center; gap: 14px; color: var(--muted); }
.loading-screen.inline { min-height: 45vh; }
.simple-page { min-height: 100vh; padding: 40px 20px; background: var(--paper); }
.setup-card { width: min(100%, 760px); margin: 0 auto; padding: 34px; border: 1px solid var(--line); border-radius: 24px; background: white; box-shadow: var(--shadow); }
.setup-card.narrow { width: min(100%, 520px); }
.setup-card h1 { margin: 8px 0 10px; font-size: clamp(28px, 5vw, 44px); letter-spacing: -.05em; }
.setup-card > p { color: var(--muted); line-height: 1.6; }
.setup-form { display: grid; gap: 17px; margin-top: 24px; }
.setup-form fieldset { display: grid; gap: 12px; margin: 0; padding: 18px; border: 1px solid var(--line); border-radius: 14px; }
.setup-form legend { padding: 0 7px; color: var(--blue); font-size: 12px; font-weight: 800; text-transform: uppercase; letter-spacing: .08em; }
.setup-form label, .invite-form label { display: grid; gap: 7px; color: #425269; font-size: 12px; font-weight: 700; }
.setup-form input, .invite-form input { min-width: 0; height: 46px; padding: 0 12px; border: 1px solid var(--line); border-radius: 10px; outline: none; }
.setup-form input:focus, .invite-form input:focus { border-color: var(--blue); box-shadow: 0 0 0 3px rgba(41,104,255,.12); }
.setup-form label small { color: var(--muted); font-weight: 500; }
.form-grid { display: grid; grid-template-columns: 1fr 120px; gap: 12px; }
.form-grid label:nth-child(3), .form-grid label:nth-child(4) { grid-column: span 1; }
.link-button { display: inline-flex; align-items: center; text-decoration: none; }
.admin-shell { width: min(100%, 980px); margin: 0 auto; display: grid; gap: 18px; }
.admin-header { display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.admin-header h1 { margin: 5px 0 0; letter-spacing: -.045em; }
.admin-card, .invite-result { padding: 24px; border: 1px solid var(--line); border-radius: 18px; background: white; box-shadow: var(--shadow); }
.admin-card h2 { margin: 0 0 18px; }
.invite-form { display: flex; align-items: end; gap: 10px; }
.invite-form label { flex: 1; }
.admin-card > small { display: block; margin-top: 10px; color: var(--muted); }
.invite-result { border-color: #a7c2ff; background: #edf3ff; }
.invite-result p { color: var(--muted); }
.invite-result code { display: block; padding: 12px; border-radius: 9px; background: white; overflow-wrap: anywhere; user-select: all; }
.user-table { display: grid; }
.user-row { display: grid; grid-template-columns: auto minmax(0, 1fr) auto auto; align-items: center; gap: 12px; padding: 13px 0; border-top: 1px solid var(--line); }
.user-row:first-child { border-top: 0; }
.user-row > div { display: grid; gap: 3px; }
.user-row small, .pending-invite span { color: var(--muted); }
.status-badge { padding: 6px 8px; border-radius: 8px; font-size: 11px; font-weight: 800; }
.status-badge.active { color: #117646; background: #e9f8f0; }
.status-badge.disabled { color: #a62929; background: #fff0f0; }
.pending-invite { display: flex; justify-content: space-between; gap: 14px; padding-top: 12px; border-top: 1px solid var(--line); }
@media (max-width: 650px) {
  .simple-page { padding: 18px 12px; }
  .setup-card { padding: 22px 17px; }
  .form-grid { grid-template-columns: 1fr; }
  .invite-form { align-items: stretch; flex-direction: column; }
  .admin-header { align-items: flex-start; flex-direction: column; }
  .user-row { grid-template-columns: auto minmax(0, 1fr); }
  .user-row form, .status-badge { grid-column: 2; justify-self: start; }
}
@media (max-width: 470px) {
  .hero-grid { grid-template-columns: 1fr; }
  .focus-card { grid-column: auto; }
  .stat-card { min-height: 170px; }
  .focus-head h2 { font-size: 18px; }
  .focus-foot { align-items: flex-end; }
  .primary-button { padding: 10px 11px; }
  .question-card, .activity-card { padding: 20px; border-radius: 18px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; }
}

.nav-item small { margin-left: auto; color: #91a0b3; font-size: 11px; }
.stat-card-button { width: 100%; border: 0; text-align: left; cursor: pointer; }
.secondary-button {
  min-height: 42px; padding: 0 15px; border: 1px solid var(--line); border-radius: 11px;
  background: white; color: var(--ink); font-weight: 700; font-size: 13px; cursor: pointer;
}
.full-width { width: 100%; margin-top: 22px; }
.corpus-totals { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin: 24px 0; }
.corpus-totals div { padding: 14px 8px; border: 1px solid var(--line); border-radius: 12px; background: #f8fafd; text-align: center; }
.corpus-totals strong { display: block; font-size: 20px; letter-spacing: -.04em; }
.corpus-totals span { color: var(--muted); font-size: 10px; }
.compact-question .card-heading h2 { max-width: 740px; font-size: clamp(18px, 2vw, 24px); }
.question-translation { display: flex; align-items: flex-start; gap: 8px; margin: 18px 0; color: #5b6d83; font-size: 14px; line-height: 1.55; }
.question-translation svg { flex: 0 0 auto; margin-top: 3px; color: var(--blue); }
.card-heading-actions { display: grid; justify-items: end; gap: 8px; flex: 0 0 auto; }
.answer-copy { display: grid; align-content: center; gap: 3px; min-width: 0; padding: 10px 12px; background: transparent; }
.answer-copy strong { font-size: 13px; font-weight: 620; line-height: 1.65; }
.answer-copy small { margin-top: 3px; color: var(--muted); font-size: 11px; line-height: 1.35; }
.answer-option.correct { border-color: #70c29a; background: #edf9f3; }
.answer-option.correct .answer-choice > span { color: white; background: #15965a; }
.answer-option.wrong { border-color: #ef9e9e; background: #fff3f3; }
.answer-option.wrong .answer-choice > span { color: white; background: #d94e4e; }
.answer-option > svg { margin-left: auto; flex: 0 0 auto; }
.learning-panel { display: grid; gap: 18px; margin-top: 15px; padding: 19px; border-radius: 14px; background: #f6f8fc; border: 1px solid #e2e8f1; }
.panel-label { color: var(--blue); font-size: 11px; font-weight: 800; text-transform: uppercase; letter-spacing: .08em; }
.explanation-block p { margin: 7px 0 10px; color: #273c59; font-size: 14px; line-height: 1.65; }
.explanation-block small { display: block; color: var(--muted); font-size: 12px; line-height: 1.55; }
.learning-section { display: grid; gap: 10px; }
.grammar-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.grammar-grid div { display: grid; gap: 5px; padding: 12px; border: 1px solid var(--line); border-radius: 11px; background: white; }
.grammar-grid strong { font-size: 12px; }
.grammar-grid span { color: var(--muted); font-size: 11px; line-height: 1.45; }
.word-chips { display: flex; flex-wrap: wrap; gap: 7px; }
.word-chips button { position: relative; padding: 7px 9px; border: 1px solid #cad6e7; border-radius: 8px; background: white; color: #344a66; font-size: 12px; cursor: pointer; }
.word-chips button.active { border-color: var(--blue); color: var(--blue-dark); background: #edf3ff; }
.word-chips button span { display: block; margin-top: 4px; color: var(--ink); font-size: 11px; font-weight: 700; }
.question-image { margin: 18px 0; padding: 10px; border: 1px solid var(--line); border-radius: 14px; background: white; overflow: hidden; }
.question-image img { display: block; width: 100%; height: auto; border-radius: 8px; }
.mastered-chip { color: #117646; background: #e9f8f0; }

.catalog-view { display: grid; gap: 18px; }
.catalog-intro { display: flex; align-items: center; gap: 22px; justify-content: space-between; padding: 24px; border-radius: 20px; background: var(--navy); color: white; }
.catalog-intro h2 { margin: 6px 0 7px; font-size: clamp(24px, 3vw, 34px); letter-spacing: -.04em; }
.catalog-intro p { margin: 0; max-width: 650px; color: #b9c9dc; font-size: 14px; }
.catalog-intro .section-kicker { color: #90b7ef; }
.mastery-ring { flex: 0 0 auto; width: 86px; height: 86px; display: grid; place-content: center; border: 7px solid #294568; border-top-color: var(--amber); border-radius: 50%; text-align: center; }
.mastery-ring strong { font-size: 21px; line-height: 1; }.mastery-ring span { margin-top: 3px; color: #aebed1; font-size: 10px; }
.practice-launcher { display: flex; align-items: center; gap: 12px; padding: 13px; border: 1px solid #cad9f4; border-radius: 16px; background: #edf3ff; }
.practice-launcher-copy { min-width: 245px; display: flex; align-items: center; gap: 11px; margin-right: auto; }
.practice-launcher-copy > div { display: grid; gap: 3px; }.practice-launcher-copy strong { font-size: 13px; }.practice-launcher-copy small { color: var(--muted); font-size: 11px; }
.practice-icon { width: 38px; height: 38px; display: grid; place-items: center; flex: 0 0 auto; border-radius: 11px; color: var(--blue); background: white; }
.practice-launcher .secondary-button, .practice-progress .secondary-button { display: inline-flex; align-items: center; justify-content: center; gap: 7px; }
.random-count-control { display: flex; align-items: stretch; gap: 7px; padding-left: 12px; border-left: 1px solid #c8d7ef; }
.random-count-control label { display: flex; align-items: center; gap: 6px; padding: 0 9px; border: 1px solid var(--line); border-radius: 10px; background: white; }
.random-count-control label span { color: var(--muted); font-size: 10px; font-weight: 750; text-transform: uppercase; }.random-count-control input { width: 46px; border: 0; outline: 0; color: var(--ink); background: transparent; font-size: 13px; font-weight: 750; }
.catalog-tools { display: flex; align-items: center; gap: 10px; padding: 13px; border: 1px solid var(--line); border-radius: 16px; background: white; }
.search-field { flex: 1; display: flex; align-items: center; gap: 9px; min-width: 180px; padding: 0 11px; border: 1px solid var(--line); border-radius: 10px; background: #f9fbfd; }
.search-field svg { color: var(--muted); }.search-field input { width: 100%; height: 42px; border: 0; outline: 0; background: transparent; color: var(--ink); font-size: 14px; }
.catalog-tools select { height: 44px; max-width: 230px; padding: 0 35px 0 12px; border: 1px solid var(--line); border-radius: 10px; background: white; color: var(--ink); font-size: 13px; }
.result-count { white-space: nowrap; padding: 0 7px; color: var(--muted); font-size: 12px; }
.question-list { display: grid; gap: 13px; }
.question-list .question-card { box-shadow: 0 8px 30px rgba(20,45,82,.05); }
.question-list .card-heading h2 { max-width: 850px; font-size: clamp(17px, 1.7vw, 21px); }
.pagination-row { display: flex; align-items: center; justify-content: center; gap: 16px; padding-top: 4px; }
.pagination-row button { display: inline-flex; align-items: center; gap: 5px; padding: 9px 12px; border: 1px solid var(--line); border-radius: 9px; background: white; color: var(--ink); font-size: 12px; font-weight: 700; cursor: pointer; }
.pagination-row button:disabled { opacity: .4; cursor: default; }.pagination-row span { color: var(--muted); font-size: 12px; }
.random-practice { max-width: 920px; margin: 0 auto; }.practice-progress { display: flex; align-items: center; justify-content: space-between; gap: 15px; }.practice-progress > div { display: flex; align-items: center; gap: 14px; color: var(--muted); font-size: 12px; }.practice-progress strong { color: var(--ink); }.random-practice > .progress-track { margin: 14px 0 20px; }.practice-next { margin: 16px 0 0 auto; }

.flashcard-view { max-width: 900px; margin: 0 auto; }
.study-toolbar { display: flex; align-items: center; justify-content: space-between; gap: 18px; margin-bottom: 24px; }
.study-toolbar p { color: var(--muted); font-size: 13px; }.study-toolbar strong { color: var(--ink); }
.study-toolbar-controls { display: flex; align-items: center; gap: 9px; flex-wrap: wrap; }
.segmented-control { display: inline-flex; gap: 4px; padding: 4px; border: 1px solid var(--line); border-radius: 13px; background: white; }
.segmented-control button { display: flex; align-items: center; gap: 7px; min-width: 74px; padding: 9px 12px; border: 0; border-radius: 9px; background: transparent; color: var(--muted); font-weight: 750; cursor: pointer; }
.segmented-control button.active { color: white; background: var(--blue); }.segmented-control small { font-size: 10px; opacity: .75; }
.order-control button { min-width: auto; }
.flashcard-stage { display: grid; justify-items: center; perspective: 1200px; }
.flashcard { width: min(100%, 690px); min-height: 410px; display: block; padding: 0; border: 1px solid #d8e0eb; border-radius: 26px; background: white; box-shadow: 0 28px 70px rgba(20,45,82,.12); color: var(--ink); cursor: pointer; overflow: hidden; }
.flashcard-face { min-height: 410px; display: flex; flex-direction: column; padding: 29px; background: linear-gradient(145deg, white, #f7f9fd); }
.flashcard-back { background: linear-gradient(145deg, #102846, #173a65); color: white; }
.flashcard-meta { display: flex; justify-content: space-between; align-items: center; }.flashcard-meta span { padding: 6px 9px; border-radius: 8px; background: #edf3ff; color: var(--blue); font-size: 12px; font-weight: 800; }.flashcard-back .flashcard-meta span { background: rgba(255,255,255,.12); color: #bcd5ff; }
.flashcard-meta small { color: var(--muted); font-size: 12px; }.flashcard-back .flashcard-meta small { color: #a9bdd6; }
.word-main { display: grid; place-items: center; gap: 8px; margin: auto 0; text-align: center; }.word-main > span { color: var(--blue); font-size: 20px; font-weight: 700; }.word-main strong { font-size: clamp(42px, 7vw, 70px); line-height: 1.05; letter-spacing: -.055em; }.word-main small { color: var(--muted); font-size: 14px; }.flashcard-back .word-main small { color: #b6c8dd; }
.flashcard-face > p { min-height: 40px; margin: 0; color: var(--muted); font-size: 14px; line-height: 1.55; text-align: center; }.flashcard-back > p { color: #c5d4e6; }
.flip-hint { display: flex; align-items: center; gap: 7px; margin-top: 14px; color: var(--muted); font-size: 12px; }
.rating-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 9px; width: min(100%, 690px); margin: 20px auto 0; }
.rating-row button { display: grid; gap: 3px; padding: 11px; border: 1px solid var(--line); border-radius: 11px; background: white; color: var(--ink); cursor: pointer; }.rating-row button:hover { border-color: #9bb7ff; background: #f2f6ff; }.rating-row span { font-size: 13px; font-weight: 750; }.rating-row small { color: var(--muted); font-size: 10px; }
.skip-card-button { width: min(100%, 690px); display: flex; align-items: center; justify-content: center; gap: 7px; margin: 10px auto 0; padding: 10px; border: 1px dashed #b8c5d7; border-radius: 11px; background: transparent; color: #53657c; cursor: pointer; }.skip-card-button:hover { border-color: var(--blue); color: var(--blue-dark); background: #f3f6ff; }.skip-card-button span { font-size: 12px; font-weight: 750; }.skip-card-button small { color: var(--muted); font-size: 10px; }

.exam-start { max-width: 720px; margin: 5vh auto 0; padding: 48px; border: 1px solid var(--line); border-radius: 26px; background: white; box-shadow: var(--shadow); text-align: center; }
.exam-symbol, .result-mark { width: 70px; height: 70px; display: grid; place-items: center; margin: 0 auto 25px; border-radius: 20px; color: var(--blue); background: #edf3ff; }.exam-start h2 { margin: 8px 0 10px; font-size: clamp(30px, 5vw, 48px); letter-spacing: -.055em; }.exam-start > p { max-width: 540px; margin: 0 auto; color: var(--muted); font-size: 15px; line-height: 1.6; }
.exam-facts { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin: 30px 0; }.exam-facts span { display: grid; gap: 3px; padding: 16px 8px; border-radius: 13px; background: #f5f7fb; color: var(--muted); font-size: 11px; }.exam-facts strong { color: var(--ink); font-size: 23px; }.large-button { margin: 0 auto; min-height: 48px; padding-inline: 20px; }
.result-mark.pass { color: #11824b; background: #e8f8ef; }.result-mark.fail { color: #c94141; background: #fff0f0; }.result-screen h2 { font-size: 62px; }
.exam-shell { max-width: 900px; margin: 0 auto; }.exam-progress { margin-bottom: 20px; }.exam-progress > div:first-child { display: flex; justify-content: space-between; color: var(--muted); font-size: 12px; font-weight: 700; }.exam-progress > div:first-child span { display: flex; align-items: center; gap: 6px; }.exam-progress .progress-track { margin: 10px 0 0; }
.exam-question { padding: 31px; border: 1px solid var(--line); border-radius: 23px; background: white; box-shadow: var(--shadow); }.exam-question h2 { margin: 12px 0 14px; font-size: clamp(23px, 3vw, 34px); line-height: 1.45; letter-spacing: -.035em; }.exam-question-head { display: flex; align-items: center; justify-content: space-between; gap: 15px; }.translation-toggle { display: inline-flex; align-items: center; gap: 7px; padding: 8px 10px; border: 1px solid #c9d7ec; border-radius: 9px; background: #f5f8ff; color: var(--blue-dark); font-size: 11px; font-weight: 750; cursor: pointer; }.exam-translation { display: flex; align-items: flex-start; gap: 8px; margin: 0 0 21px; color: #526a88; font-size: 14px; line-height: 1.55; }.exam-translation svg { flex: 0 0 auto; margin-top: 3px; color: var(--blue); }.word-help { margin: 0 0 12px; color: var(--muted); font-size: 11px; }
.exam-options { display: grid; gap: 10px; }.exam-option { display: grid; grid-template-columns: 68px 1fr; min-height: 66px; border: 1px solid var(--line); border-radius: 12px; background: white; transition: .16s ease; }.exam-option:hover { border-color: #8eaeff; background: #f8faff; }.exam-option-select { display: grid; place-content: center; justify-items: center; gap: 3px; border: 0; border-right: 1px solid var(--line); border-radius: 11px 0 0 11px; background: #f7f9fc; color: var(--ink); cursor: pointer; }.exam-option-select:hover { background: #eaf0ff; }.exam-option-select > span { width: 30px; height: 30px; display: grid; place-items: center; border-radius: 8px; background: #e8edf4; font-size: 12px; font-weight: 800; }.exam-option-select > small { color: var(--muted); font-size: 9px; font-weight: 700; }.exam-option-copy { display: grid; align-content: center; gap: 6px; padding: 12px 14px; color: #314259; font-size: 14px; line-height: 1.75; }.exam-option-copy > small { color: #687b94; font-size: 12px; line-height: 1.45; }
.interactive-german { display: inline; }.interactive-german > button { position: relative; display: inline; margin: 0 1px; padding: 0 2px 1px; border: 0; border-bottom: 1px dotted #91a6bf; border-radius: 3px; background: transparent; color: inherit; font: inherit; line-height: inherit; cursor: help; }.interactive-german > button:hover, .interactive-german > button.active { color: var(--blue-dark); background: #edf3ff; border-bottom-color: var(--blue); }.word-meaning { position: absolute; z-index: 5; left: 50%; bottom: calc(100% + 7px); width: max-content; max-width: 220px; transform: translateX(-50%); padding: 6px 8px; border-radius: 7px; background: var(--navy); color: white; box-shadow: 0 8px 22px rgba(9,30,56,.2); font-size: 11px; font-weight: 650; line-height: 1.3; letter-spacing: 0; white-space: normal; }

.login-page { min-height: 100vh; display: grid; grid-template-columns: minmax(360px, 1fr) minmax(440px, 1fr); background: white; }
.login-story { display: flex; flex-direction: column; padding: 40px clamp(28px, 5vw, 76px); background: radial-gradient(circle at 85% 10%, rgba(41,104,255,.33), transparent 25rem), var(--navy); color: white; }
.login-brand { padding-inline: 0; }.login-brand .brand-caption { color: #9fb5d0; }.login-copy { margin: auto 0; }.light-kicker { color: #8fb8ff; }.login-copy h1 { margin: 12px 0 20px; font-size: clamp(43px, 6vw, 78px); line-height: .98; letter-spacing: -.065em; }.login-copy > p { max-width: 580px; color: #bdcbdd; font-size: 17px; line-height: 1.65; }.login-copy ul { display: grid; gap: 12px; margin: 30px 0 0; padding: 0; list-style: none; }.login-copy li { display: flex; align-items: center; gap: 10px; color: #e6edf6; font-size: 14px; }.login-copy li svg { color: var(--amber); }.login-security { display: flex; align-items: center; gap: 8px; color: #93a9c5; font-size: 12px; }
.login-form-wrap { display: grid; place-items: center; padding: 30px; }.login-form { width: min(100%, 420px); display: grid; }.login-icon { width: 54px; height: 54px; display: grid; place-items: center; margin-bottom: 25px; border-radius: 16px; color: var(--blue); background: #edf3ff; }.login-form h2 { margin: 7px 0 8px; font-size: 34px; letter-spacing: -.045em; }.login-form > p { margin: 0 0 28px; color: var(--muted); font-size: 14px; }.login-form label { display: grid; gap: 7px; margin-bottom: 15px; color: #425269; font-size: 12px; font-weight: 700; }.login-form input { height: 48px; padding: 0 13px; border: 1px solid var(--line); border-radius: 11px; outline: 0; color: var(--ink); font-size: 14px; }.login-form input:focus { border-color: var(--blue); box-shadow: 0 0 0 3px rgba(41,104,255,.12); }.login-submit { min-height: 49px; justify-content: center; margin-top: 5px; }.login-submit:disabled { opacity: .65; }.login-form > small { margin-top: 16px; color: #8a98aa; font-size: 11px; text-align: center; }.form-error { margin-bottom: 12px; padding: 10px 12px; border-radius: 9px; color: #a62929; background: #fff0f0; font-size: 12px; }

@media (max-width: 850px) {
  .login-page { grid-template-columns: 1fr; }.login-story { min-height: 420px; }.login-copy { margin: 45px 0; }.login-copy h1 { font-size: 50px; }.login-form-wrap { padding-block: 55px; }
}
@media (max-width: 760px) {
  .catalog-intro { align-items: flex-start; }.mastery-ring { width: 72px; height: 72px; border-width: 6px; }.practice-launcher { align-items: stretch; flex-direction: column; }.practice-launcher-copy { min-width: 0; }.random-count-control { padding: 10px 0 0; border-left: 0; border-top: 1px solid #c8d7ef; }.random-count-control label { flex: 1; }.catalog-tools { flex-wrap: wrap; }.search-field { flex-basis: 100%; }.catalog-tools select { flex: 1; max-width: none; }.grammar-grid { grid-template-columns: 1fr; }.study-toolbar { align-items: flex-start; flex-direction: column; }.flashcard { min-height: 360px; }.flashcard-face { min-height: 360px; padding: 22px; }.rating-row { grid-template-columns: 1fr 1fr; }.exam-start { padding: 34px 20px; }.exam-question { padding: 21px 17px; }.exam-question-head { align-items: flex-start; flex-direction: column; }.exam-option { grid-template-columns: 58px 1fr; }.login-story { min-height: 390px; padding: 28px 24px; }.login-copy h1 { font-size: 42px; }.login-copy > p { font-size: 15px; }
}