:root {
  --navy-950: #081124;
  --navy-900: #101b34;
  --navy-800: #172746;
  --navy-700: #23375e;
  --cream: #f7f2e8;
  --white: #ffffff;
  --ink: #17233c;
  --muted: #68738a;
  --line: #dfe4ec;
  --lime: #d9f65d;
  --lime-dark: #98b520;
  --blue: #5b7cff;
  --good: #168b62;
  --good-bg: #e7f8f1;
  --bad: #d44758;
  --bad-bg: #fff0f2;
  --warning: #a56c09;
  --radius-lg: 30px;
  --radius-md: 20px;
  --shadow: 0 24px 70px rgba(5, 14, 35, .18);
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  scroll-behavior: smooth;
}

body {
  min-height: 100%;
  margin: 0;
  overflow-x: hidden;
  background: var(--cream);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

button,
input,
select,
textarea {
  font: inherit;
}

button,
a,
input,
select,
textarea {
  -webkit-tap-highlight-color: transparent;
}

button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 3px solid rgba(91, 124, 255, .42);
  outline-offset: 3px;
}

.page-bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  pointer-events: none;
}

.glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(2px);
  opacity: .7;
}

.glow-one {
  width: 420px;
  height: 420px;
  top: -170px;
  right: -100px;
  background: rgba(217, 246, 93, .58);
}

.glow-two {
  width: 330px;
  height: 330px;
  left: -170px;
  bottom: -130px;
  background: rgba(91, 124, 255, .18);
}

.road-line {
  position: absolute;
  width: 42vw;
  height: 150vh;
  top: -30vh;
  right: 4vw;
  border-left: 1px dashed rgba(16, 27, 52, .12);
  border-right: 1px dashed rgba(16, 27, 52, .12);
  transform: rotate(19deg);
}

.app {
  width: min(1180px, calc(100% - 36px));
  min-height: 100vh;
  margin: 0 auto;
  padding: 24px 0 18px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: clamp(36px, 7vh, 74px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--ink);
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 46px;
  height: 46px;
  place-items: center;
  border-radius: 15px;
  background: var(--navy-900);
  color: var(--lime);
  font-size: .82rem;
  font-weight: 950;
  letter-spacing: -.02em;
  box-shadow: 0 10px 24px rgba(16, 27, 52, .2);
}

.brand strong,
.brand small {
  display: block;
}

.brand strong {
  font-size: 1rem;
  letter-spacing: -.02em;
}

.brand small {
  margin-top: 2px;
  color: var(--muted);
  font-size: .75rem;
}

.topbar-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
  flex-wrap: wrap;
}

.top-nav {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 5px;
  border: 1px solid rgba(16, 27, 52, .1);
  border-radius: 999px;
  background: rgba(255, 255, 255, .62);
  backdrop-filter: blur(12px);
}

.top-nav a {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 0 13px;
  border-radius: 999px;
  color: #4d5a73;
  font-size: .82rem;
  font-weight: 850;
  text-decoration: none;
}

.top-nav a:hover,
.top-nav a.active {
  background: var(--navy-900);
  color: var(--white);
}

.database-pill {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 9px 14px;
  border: 1px solid rgba(16, 27, 52, .1);
  border-radius: 999px;
  background: rgba(255, 255, 255, .58);
  color: var(--muted);
  font-size: .82rem;
  backdrop-filter: blur(12px);
}

.database-pill b {
  color: var(--ink);
}

.account-chip {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  padding: 8px 13px;
  border: 1px solid rgba(91, 124, 255, .18);
  border-radius: 999px;
  background: #eef1ff;
  color: #4656c9;
  font-size: .78rem;
  font-weight: 850;
}

.account-chip.muted {
  border-color: rgba(16, 27, 52, .1);
  background: rgba(255, 255, 255, .58);
  color: var(--muted);
}

.home-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(390px, .78fr);
  gap: clamp(32px, 7vw, 88px);
  align-items: center;
}

.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, .95fr) minmax(390px, .82fr);
  gap: clamp(32px, 7vw, 82px);
  align-items: center;
}

.contact-hero h1 {
  max-width: 760px;
}

.contact-card {
  position: relative;
  padding: clamp(24px, 4vw, 38px);
}

.contact-card::before {
  position: absolute;
  width: 76px;
  height: 76px;
  top: -18px;
  right: -18px;
  border-radius: 24px;
  background: var(--lime);
  content: "";
  z-index: -1;
  transform: rotate(11deg);
}

.contact-points {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  max-width: 620px;
}

.contact-points div {
  padding: 17px;
  border: 1px solid rgba(16, 27, 52, .08);
  border-radius: 20px;
  background: rgba(255, 255, 255, .62);
}

.contact-points strong,
.contact-points span {
  display: block;
}

.contact-points strong {
  font-size: 1rem;
  letter-spacing: -.02em;
}

.contact-points span {
  margin-top: 5px;
  color: var(--muted);
  font-size: .82rem;
  line-height: 1.45;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--blue);
  font-size: .74rem;
  font-weight: 900;
  letter-spacing: .15em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  overflow-wrap: break-word;
}

h1,
h2 {
  margin: 0;
  letter-spacing: -.045em;
}

h1 {
  max-width: 720px;
  font-size: clamp(3rem, 7vw, 6.4rem);
  line-height: .91;
}

h1 span {
  color: var(--blue);
}

h2 {
  font-size: clamp(1.75rem, 4vw, 2.65rem);
  line-height: 1.08;
}

.lead {
  max-width: 620px;
  margin: 26px 0;
  color: var(--muted);
  font-size: clamp(1rem, 1.6vw, 1.18rem);
  line-height: 1.7;
}

.feature-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  margin: 0 0 34px;
  color: #47536b;
  font-size: .9rem;
  font-weight: 750;
}

.feature-list span {
  display: inline-flex;
  align-items: center;
  gap: 7px;
}

.feature-list i {
  display: grid;
  width: 21px;
  height: 21px;
  place-items: center;
  border-radius: 50%;
  background: var(--lime);
  color: var(--navy-900);
  font-size: .72rem;
  font-style: normal;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  max-width: 560px;
  border-top: 1px solid rgba(16, 27, 52, .13);
}

.stats-grid div {
  padding: 20px 20px 0 0;
}

.stats-grid strong,
.stats-grid span {
  display: block;
}

.stats-grid strong {
  font-size: 1.55rem;
  letter-spacing: -.04em;
}

.stats-grid span {
  margin-top: 3px;
  color: var(--muted);
  font-size: .78rem;
}

.card {
  border: 1px solid rgba(16, 27, 52, .08);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, .86);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.setup-card {
  position: relative;
  padding: clamp(24px, 4vw, 38px);
}

.setup-card::before {
  position: absolute;
  width: 76px;
  height: 76px;
  top: -18px;
  right: -18px;
  border-radius: 24px;
  background: var(--lime);
  content: "";
  z-index: -1;
  transform: rotate(11deg);
}

.card-heading {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 26px;
}

.step-number {
  display: grid;
  flex: 0 0 auto;
  width: 42px;
  height: 42px;
  place-items: center;
  border-radius: 14px;
  background: var(--navy-900);
  color: var(--lime);
  font-size: .76rem;
  font-weight: 900;
}

.settings {
  display: grid;
  gap: 16px;
}

.form-stack {
  display: grid;
  gap: 16px;
}

.form-heading {
  margin-top: 30px;
}

.optional {
  color: var(--muted);
  font-weight: 650;
}

.alert {
  margin-bottom: 18px;
  padding: 14px 16px;
  border-radius: 16px;
  font-size: .88rem;
  font-weight: 800;
  line-height: 1.45;
}

.alert.success {
  border: 1px solid rgba(22, 139, 98, .22);
  background: var(--good-bg);
  color: var(--good);
}

.alert.error {
  border: 1px solid rgba(212, 71, 88, .25);
  background: var(--bad-bg);
  color: var(--bad);
}

.user-box {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  padding: 18px;
  border: 1px solid rgba(91, 124, 255, .16);
  border-radius: 20px;
  background: #f1f3ff;
}

.user-box h2 {
  font-size: clamp(1.55rem, 3vw, 2.2rem);
}

.user-box p:last-child {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: .88rem;
  line-height: 1.45;
}

.settings-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

label {
  display: grid;
  gap: 8px;
  color: #46526b;
  font-size: .78rem;
  font-weight: 850;
}

input,
select,
textarea {
  width: 100%;
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: 15px;
  background: #f9fafc;
  color: var(--ink);
  font-size: .92rem;
  font-weight: 720;
  outline: none;
}

select {
  padding: 13px 38px 13px 14px;
  cursor: pointer;
}

input,
textarea {
  padding: 13px 14px;
}

textarea {
  min-height: 150px;
  line-height: 1.55;
  resize: vertical;
}

input::placeholder,
textarea::placeholder {
  color: #98a2b3;
}

input:hover,
select:hover,
textarea:hover {
  border-color: #b9c2d2;
}

.selection-note {
  min-height: 42px;
  margin: 16px 0;
  padding: 11px 13px;
  border-radius: 13px;
  background: #f0f3f8;
  color: var(--muted);
  font-size: .82rem;
  line-height: 1.45;
}

button {
  border: 0;
  border-radius: 15px;
  padding: 14px 20px;
  font-weight: 850;
  cursor: pointer;
  transition: transform .18s ease, box-shadow .18s ease, background-color .18s ease, border-color .18s ease;
}

button:hover {
  transform: translateY(-2px);
}

button:active {
  transform: translateY(0);
}

.primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  background: var(--navy-900);
  color: var(--white);
  box-shadow: 0 12px 28px rgba(16, 27, 52, .18);
}

.primary:hover {
  background: var(--navy-800);
  box-shadow: 0 15px 34px rgba(16, 27, 52, .24);
}

.primary span {
  color: var(--lime);
  font-size: 1.15rem;
}

.wide {
  width: 100%;
}

.ghost {
  border: 1px solid var(--line);
  background: var(--white);
  color: var(--ink);
}

.compact {
  padding: 10px 14px;
  border-radius: 13px;
  font-size: .8rem;
}

.text-button {
  background: transparent;
  color: var(--muted);
  text-decoration: underline;
  text-underline-offset: 4px;
}

.keyboard-hint {
  margin: 14px 0 0;
  color: var(--muted);
  font-size: .74rem;
  line-height: 1.5;
  text-align: center;
}

kbd {
  display: inline-grid;
  min-width: 22px;
  height: 22px;
  place-items: center;
  border: 1px solid #ccd3df;
  border-bottom-width: 2px;
  border-radius: 6px;
  background: var(--white);
  color: var(--ink);
  font-family: inherit;
  font-size: .68rem;
  font-weight: 850;
}

.hidden {
  display: none !important;
}

.quiz,
.result {
  width: min(900px, 100%);
  margin: 0 auto;
  padding: clamp(24px, 5vw, 48px);
}

.quiz-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.quiz-context {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px 12px;
}

.quiz-context .eyebrow {
  margin: 0;
}

.mode-pill {
  padding: 6px 10px;
  border-radius: 999px;
  background: var(--good-bg);
  color: var(--good);
  font-size: .7rem;
  font-weight: 850;
}

.mode-pill.exam {
  background: #eef0ff;
  color: #4e5fd2;
}

.counter {
  display: inline-flex;
  align-items: baseline;
  gap: 4px;
  padding: 9px 13px;
  border-radius: 12px;
  background: var(--navy-900);
  color: var(--white);
  font-size: .88rem;
  font-weight: 900;
}

.counter-separator {
  color: #94a0b9;
  font-size: .72rem;
}

.progress {
  height: 8px;
  margin: 24px 0 34px;
  overflow: hidden;
  border-radius: 999px;
  background: #e8ebf0;
}

.progress span {
  display: block;
  width: 0;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--blue), #8ba1ff);
  transition: width .3s ease;
}

.question-kicker {
  margin: 0 0 8px;
  color: var(--muted);
  font-size: .78rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: .08em;
}

#questionTitle {
  max-width: 780px;
}

.answers {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 30px;
}

.answer {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  min-height: 76px;
  gap: 13px;
  align-items: center;
  padding: 13px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: #fbfcfd;
  color: var(--ink);
  line-height: 1.4;
  text-align: left;
}

.answer:hover {
  border-color: #aeb9cb;
  background: var(--white);
}

.letter {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border-radius: 13px;
  background: #edf0f5;
  color: #3e4c67;
  font-weight: 950;
}

.answer-text {
  font-size: .91rem;
  font-weight: 720;
}

.answer.locked {
  cursor: default;
  transform: none;
}

.answer.correct {
  border-color: rgba(22, 139, 98, .42);
  background: var(--good-bg);
}

.answer.correct .letter {
  background: var(--good);
  color: var(--white);
}

.answer.wrong {
  border-color: rgba(212, 71, 88, .4);
  background: var(--bad-bg);
}

.answer.wrong .letter {
  background: var(--bad);
  color: var(--white);
}

.answer.selected {
  border-color: rgba(91, 124, 255, .52);
  background: #eef1ff;
}

.answer.selected .letter {
  background: var(--blue);
  color: var(--white);
}

.feedback {
  margin-top: 18px;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: 16px;
}

.feedback strong,
.feedback p {
  display: block;
}

.feedback p {
  margin: 5px 0 0;
  color: #526078;
  font-size: .9rem;
  line-height: 1.5;
}

.feedback.good {
  border-color: rgba(22, 139, 98, .25);
  background: var(--good-bg);
  color: var(--good);
}

.feedback.bad {
  border-color: rgba(212, 71, 88, .24);
  background: var(--bad-bg);
  color: var(--bad);
}

.feedback.neutral {
  border-color: #d9def8;
  background: #f1f3ff;
  color: #4e5fd2;
}

.actions,
.result-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.actions {
  justify-content: space-between;
}

.result-summary {
  display: grid;
  grid-template-columns: 176px minmax(0, 1fr);
  gap: 30px;
  align-items: center;
}

.score-ring {
  --score: 0deg;
  display: grid;
  width: 176px;
  height: 176px;
  place-items: center;
  border-radius: 50%;
  background: conic-gradient(var(--lime) var(--score), #e8ebf0 0);
  transition: background .5s ease;
}

.score-ring > div {
  display: grid;
  width: 138px;
  height: 138px;
  place-content: center;
  border-radius: 50%;
  background: var(--white);
  text-align: center;
}

.score-ring strong,
.score-ring span {
  display: block;
}

.score-ring strong {
  font-size: 2.3rem;
  letter-spacing: -.06em;
}

.score-ring span {
  color: var(--muted);
  font-size: .72rem;
}

.result-message {
  max-width: 580px;
  margin: 12px 0 0;
  color: var(--muted);
  line-height: 1.65;
}

.result-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-top: 34px;
}

.result-stats div {
  padding: 17px;
  border-radius: 17px;
  background: #f3f5f8;
}

.result-stats strong,
.result-stats span {
  display: block;
}

.result-stats strong {
  font-size: 1.3rem;
}

.result-stats span {
  margin-top: 3px;
  color: var(--muted);
  font-size: .76rem;
}

.review {
  display: grid;
  gap: 14px;
  margin-top: 32px;
  scroll-margin-top: 20px;
}

.review-item {
  padding: 20px;
  border: 1px solid var(--line);
  border-left: 4px solid var(--line);
  border-radius: 17px;
  background: #fbfcfd;
}

.review-item.is-correct {
  border-left-color: var(--good);
}

.review-item.is-wrong {
  border-left-color: var(--bad);
}

.review-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 11px;
}

.tag,
.review-status {
  display: inline-flex;
  padding: 5px 9px;
  border-radius: 999px;
  font-size: .68rem;
  font-weight: 850;
}

.tag {
  background: #edf0f5;
  color: #56627a;
}

.review-status.ok {
  background: var(--good-bg);
}

.review-status.ko {
  background: var(--bad-bg);
}

.review-item h3 {
  margin: 0 0 13px;
  font-size: 1rem;
  line-height: 1.45;
}

.review-item p {
  margin: 7px 0;
  color: #56627a;
  font-size: .86rem;
  line-height: 1.5;
}

.review-item .explanation {
  margin-top: 13px;
  padding-top: 13px;
  border-top: 1px solid var(--line);
}

.ok {
  color: var(--good);
  font-weight: 850;
}

.ko {
  color: var(--bad);
  font-weight: 850;
}

.footer-note {
  margin: 48px 0 0;
  color: #8a93a5;
  font-size: .72rem;
  text-align: center;
}

.footer-link {
  color: var(--navy-900);
  font-weight: 850;
  text-underline-offset: 4px;
}

@media (max-width: 900px) {
  .contact-grid,
  .home-grid {
    grid-template-columns: 1fr;
    max-width: 720px;
    margin: 0 auto;
  }

  .contact-hero,
  .hero-copy {
    text-align: center;
  }

  .lead,
  .stats-grid {
    margin-right: auto;
    margin-left: auto;
  }

  .feature-list {
    justify-content: center;
  }

  .contact-points {
    margin: 0 auto;
  }

  .contact-card::before,
  .setup-card::before {
    right: 12px;
  }
}

@media (max-width: 640px) {
  .app {
    width: min(100% - 22px, 1180px);
    padding-top: 14px;
  }

  .topbar {
    align-items: flex-start;
    margin-bottom: 38px;
  }

  .topbar-actions {
    justify-content: flex-end;
  }

  .database-pill {
    display: none;
  }

  .account-chip {
    display: none;
  }

  h1 {
    font-size: clamp(2.75rem, 15vw, 4.5rem);
  }

  .stats-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .stats-grid div {
    padding-right: 8px;
  }

  .settings-row,
  .answers,
  .contact-points,
  .result-stats {
    grid-template-columns: 1fr;
  }

  .contact-card,
  .quiz,
  .result {
    padding: 22px 17px;
    border-radius: 23px;
  }

  .quiz-top {
    align-items: flex-start;
  }

  .quiz-context {
    display: grid;
  }

  .answer {
    min-height: 68px;
  }

  .actions {
    display: grid;
    grid-template-columns: 1fr;
  }

  .actions button,
  .result-actions button {
    width: 100%;
  }

  .user-box {
    display: grid;
  }

  .user-box .ghost {
    width: 100%;
  }

  .result-summary {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .score-ring {
    width: 154px;
    height: 154px;
    margin: 0 auto;
  }

  .score-ring > div {
    width: 120px;
    height: 120px;
  }

  .result-stats {
    grid-template-columns: repeat(3, 1fr);
  }

  .result-stats div {
    padding: 13px 8px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: .01ms !important;
    animation-duration: .01ms !important;
  }
}