:root {
  --accent: #0057FF;
  --accent-hover: #0046d6;
  --accent-soft: #e8efff;
  --navy: #0b1b3a;
  --text: #152033;
  --muted: #5b6578;
  --bg: #f4f7fb;
  --card: #ffffff;
  --line: #e4eaf3;
  --success: #0f9f6e;
  --warning: #c2410c;
  --danger: #d92d20;
  --gold: #c9a227;
  --shadow: 0 16px 40px rgba(15, 31, 61, 0.08);
  --radius: 24px;
  --radius-sm: 16px;
  --max: 1160px;
  --focus: 0 0 0 3px rgba(0, 87, 255, 0.28);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  overflow-x: hidden;
}

body {
  margin: 0;
  font-family: "Plus Jakarta Sans", "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(1200px 500px at 90% -10%, rgba(0, 87, 255, 0.08), transparent 50%),
    radial-gradient(800px 400px at 0% 20%, rgba(201, 162, 39, 0.08), transparent 45%),
    var(--bg);
  line-height: 1.55;
  min-height: 100%;
  overflow-x: hidden;
}

img,
svg {
  max-width: 100%;
}

button,
input,
select {
  font: inherit;
}

button {
  cursor: pointer;
}

h1,
h2,
h3,
p,
ul,
ol {
  margin: 0;
}

h1 {
  font-size: clamp(32px, 5vw, 52px);
  line-height: 1.12;
  letter-spacing: -0.03em;
}

h2 {
  font-size: clamp(24px, 3vw, 32px);
  line-height: 1.2;
  letter-spacing: -0.02em;
}

h3 {
  font-size: 18px;
  letter-spacing: -0.02em;
}

.skip-link {
  position: absolute;
  left: 12px;
  top: -40px;
  z-index: 100;
  background: var(--accent);
  color: #fff;
  padding: 8px 12px;
  border-radius: 8px;
}

.skip-link:focus {
  top: 12px;
}

.container {
  width: min(calc(100% - 40px), var(--max));
  margin: 0 auto;
}

.container.narrow {
  width: min(calc(100% - 40px), 760px);
}

.app {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.site-header {
  padding: 20px 0;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: inherit;
}

.logo-mark {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  background: var(--accent);
  color: #fff;
  font-weight: 800;
}

.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.logo-text span {
  color: var(--muted);
  font-size: 12px;
}

.header-note {
  color: var(--muted);
  font-size: 13px;
}

main {
  flex: 1;
  padding: 12px 0 64px;
}

.screen {
  display: none !important;
}

.screen.is-active {
  display: block !important;
  animation: fadeUp 0.45s ease;
}

#screen-landing.is-active {
  min-height: calc(100vh - 160px);
  display: grid !important;
  align-items: center;
}

.eyebrow {
  display: inline-block;
  margin-bottom: 12px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.lead {
  font-size: 18px;
  color: var(--muted);
}

.hint,
.disclaimer,
.field-hint {
  color: var(--muted);
  font-size: 14px;
}

.disclaimer {
  margin-top: 16px;
}

.landing-grid,
.lead-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
}

.landing-copy h1 {
  margin-bottom: 16px;
}

.benefits {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px 20px;
  margin: 28px 0;
  padding: 0;
  list-style: none;
}

.benefits li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
}

.benefits li::before {
  content: "";
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--accent-soft) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%230057FF' d='M4.7 9.2 1.8 6.3l1.1-1.1 1.8 1.8 4.4-4.4 1.1 1.1z'/%3E%3C/svg%3E") center / 12px no-repeat;
  flex-shrink: 0;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 8px 0 20px;
}

.hero-visual {
  position: relative;
  min-height: 420px;
  padding: 24px 8px 16px 0;
}

.preview-card,
.panel,
.cta-banner,
.modal-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.preview-card {
  position: relative;
  z-index: 1;
  padding: 28px;
  transform: rotate(1.5deg);
}

.preview-card-head,
.test-meta,
.preview-scale {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

.preview-card-head {
  color: var(--muted);
  font-size: 14px;
  font-weight: 600;
}

.preview-badge,
.insight-label {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.preview-badge {
  background: var(--accent-soft);
  color: var(--accent);
  border-radius: 999px;
  padding: 4px 10px;
}

.preview-level,
.level-code {
  margin: 18px 0 4px;
  font-size: 84px;
  font-weight: 800;
  line-height: 0.9;
  letter-spacing: -0.06em;
  color: var(--accent);
}

.olympiad-card .preview-level {
  font-size: 56px;
  margin-top: 8px;
}

.olympiad-kicker {
  margin-top: 16px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gold);
}

.olympiad-meta {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin: 22px 0 20px;
  padding: 0;
  list-style: none;
}

.olympiad-meta li {
  padding: 12px 8px;
  border-radius: 14px;
  background: var(--bg);
  text-align: center;
  font-size: 12px;
  color: var(--muted);
}

.olympiad-meta strong {
  display: block;
  color: var(--navy);
  font-size: 18px;
}

.preview-name,
.level-name {
  font-size: 20px;
  font-weight: 600;
  color: var(--navy);
}

.preview-scale,
.cefr-scale {
  display: flex;
  gap: 8px;
  margin: 24px 0;
}

.preview-scale span,
.cefr-scale span {
  flex: 1;
  text-align: center;
  padding: 8px 0;
  border-radius: 12px;
  background: var(--bg);
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

.preview-scale .is-current,
.cefr-scale .is-current {
  background: var(--accent);
  color: #fff;
}

.preview-skills {
  display: grid;
  gap: 12px;
}

.preview-skills span,
.skill-row span {
  display: block;
  margin-bottom: 6px;
  font-size: 13px;
  font-weight: 600;
}

.mini-bar,
.skill-bar {
  border-radius: 999px;
  background: #edf1f7;
  overflow: hidden;
}

.mini-bar {
  height: 8px;
}

.skill-bar {
  height: 12px;
}

.mini-bar i,
.skill-bar i {
  display: block;
  height: 100%;
  width: 0;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--accent), #4d8aff);
  transition: width 0.8s ease;
}

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

.orb-1 {
  width: 180px;
  height: 180px;
  right: -20px;
  top: -30px;
  background: rgba(0, 87, 255, 0.16);
}

.orb-2 {
  width: 120px;
  height: 120px;
  left: -30px;
  bottom: 20px;
  background: rgba(201, 162, 39, 0.18);
}

.panel {
  padding: 32px;
}

.onboard-panel,
.analyzing-panel,
.question-card,
.form-card,
.brief-card,
.result-hero-card {
  display: grid;
  gap: 16px;
}

.rules,
.recommendations {
  padding-left: 20px;
}

.rules li,
.recommendations li {
  margin: 8px 0;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 12px 22px;
  border: 1px solid transparent;
  border-radius: 16px;
  font-weight: 700;
  transition: transform 0.15s ease, background 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn:focus-visible,
.answer:focus-visible,
.review-num:focus-visible,
.review-item:focus-visible,
input:focus-visible,
select:focus-visible,
.checkbox input:focus-visible {
  outline: none;
  box-shadow: var(--focus);
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-primary:hover {
  background: var(--accent-hover);
}

.btn-secondary,
.btn-ghost {
  background: #fff;
  color: var(--text);
  border-color: var(--line);
}

.btn-ghost {
  background: transparent;
}

.btn-block {
  width: 100%;
}

.test-wrap {
  display: grid;
  gap: 16px;
}

.test-meta {
  align-items: flex-end;
}

.question-counter {
  font-size: 20px;
  font-weight: 700;
}

.time-hint {
  color: var(--muted);
  font-size: 14px;
}

.progress {
  height: 10px;
  border-radius: 999px;
  background: #e8eef8;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--accent), #5b9bff);
  transition: width 0.35s ease;
}

.progress-label {
  margin-top: -8px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
  text-align: right;
}

.passage {
  padding: 16px 18px;
  border-left: 3px solid var(--accent);
  background: var(--bg);
  border-radius: 12px;
  color: var(--navy);
}

.question-title {
  font-size: 24px;
}

#screen-test.is-active .question-card,
#screen-test.is-active .passage,
#screen-test.is-active .question-title,
#screen-test.is-active .answers,
#screen-test.is-active .answer,
#screen-review.is-active .review-list,
#screen-review.is-active .review-item,
.no-copy {
  user-select: none;
  -webkit-user-select: none;
  -webkit-touch-callout: none;
}

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

.answer {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 64px;
  padding: 14px 16px;
  text-align: left;
  background: #fff;
  border: 1.5px solid var(--line);
  border-radius: 18px;
  color: inherit;
  transition: border-color 0.15s ease, background 0.15s ease, transform 0.15s ease;
  white-space: normal;
}

.answer:hover {
  border-color: #b9ccff;
  transform: translateY(-1px);
}

.answer.is-selected {
  border-color: var(--accent);
  background: var(--accent-soft);
}

.answer-key {
  width: 28px;
  height: 28px;
  border: 1.5px solid #c9d4e5;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 12px;
  font-weight: 700;
  color: var(--muted);
  flex-shrink: 0;
}

.answer.is-selected .answer-key {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.test-nav {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 12px;
  align-items: center;
}

.test-nav #btn-back {
  justify-self: start;
}

.test-nav .btn-ghost {
  justify-self: center;
}

.test-nav .btn-primary {
  justify-self: end;
}

.inline-error,
.field-error {
  color: var(--danger);
  font-size: 13px;
  font-weight: 600;
  min-height: 1.2em;
}

.review-wrap {
  display: grid;
  gap: 16px;
}

.review-alert {
  margin-top: 8px;
  padding: 12px 14px;
  border-radius: 14px;
  background: #fff4ed;
  color: var(--warning);
  font-weight: 600;
}

.review-alert.is-ok {
  background: #eaf8f2;
  color: var(--success);
}

.review-grid {
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  gap: 8px;
  margin-top: 20px;
}

.review-num {
  min-height: 44px;
  border: 1.5px solid var(--line);
  border-radius: 12px;
  background: #fff;
  font-weight: 700;
  color: var(--text);
}

.review-num.is-answered {
  border-color: var(--accent);
  background: var(--accent-soft);
  color: var(--accent);
}

.review-num.is-missing {
  border-color: #f5c2c0;
  background: #fef3f2;
  color: var(--danger);
}

.review-list-title {
  margin-bottom: 12px;
}

.review-list {
  display: grid;
  gap: 10px;
}

.review-item {
  display: grid;
  grid-template-columns: 52px 1fr auto;
  gap: 12px;
  align-items: start;
  width: 100%;
  padding: 14px 16px;
  text-align: left;
  background: #fff;
  border: 1.5px solid var(--line);
  border-radius: 16px;
  color: inherit;
  cursor: pointer;
  transition: border-color 0.15s ease, background 0.15s ease;
}

.review-item:hover,
.review-item:focus-visible {
  border-color: var(--accent);
  background: var(--accent-soft);
}

.review-item.is-missing {
  border-color: #f5c2c0;
}

.review-item-num {
  font-weight: 800;
  color: var(--accent);
}

.review-item-question {
  font-weight: 600;
}

.review-item-answer {
  margin-top: 4px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 500;
}

.review-item-status {
  font-size: 12px;
  font-weight: 700;
  color: var(--success);
  white-space: nowrap;
}

.review-item.is-missing .review-item-status {
  color: var(--danger);
}

.review-actions {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.analyzing-panel {
  text-align: center;
  padding: 48px 32px;
}

.loader {
  width: 48px;
  height: 48px;
  margin: 0 auto 16px;
  border: 3px solid var(--accent-soft);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.analyze-list {
  list-style: none;
  padding: 0;
  display: grid;
  gap: 10px;
  max-width: 280px;
  margin: 12px auto 0;
  text-align: left;
}

.analyze-list li {
  display: flex;
  justify-content: space-between;
  padding: 12px 14px;
  border-radius: 14px;
  background: var(--bg);
  color: var(--muted);
  font-weight: 600;
}

.analyze-list li.is-done {
  color: var(--navy);
}

.analyze-list li.is-done::after {
  content: "✓";
  color: var(--success);
}

.level-hero {
  text-align: center;
}

.score-line,
.score-percent {
  text-align: center;
}

.score-percent {
  font-size: 28px;
  font-weight: 800;
  color: var(--navy);
}

.result-wrap {
  display: grid;
  gap: 20px;
}

.result-header {
  text-align: center;
}

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

.skill-row {
  display: grid;
  grid-template-columns: 160px 1fr 52px;
  gap: 12px;
  align-items: center;
}

.skill-row strong {
  text-align: right;
}

.insight-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 20px;
}

.insight {
  padding: 16px;
  border-radius: 16px;
}

.insight.strong {
  background: #eaf8f2;
}

.insight.weak {
  background: #fff4ed;
}

.insight-value {
  font-size: 20px;
  font-weight: 800;
}

.cta-banner {
  padding: 32px;
  background:
    linear-gradient(180deg, rgba(0, 87, 255, 0.06), rgba(255, 255, 255, 0.9)),
    #fff;
}

.cta-banner p {
  margin: 12px 0 20px;
  color: var(--muted);
}

.cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.form-card form {
  display: grid;
  gap: 4px;
}

.field {
  display: grid;
  gap: 6px;
  margin-bottom: 8px;
}

.field label,
.checkbox {
  font-weight: 600;
  font-size: 14px;
}

input[type="text"],
input[type="tel"],
input[type="email"] {
  width: 100%;
  min-height: 52px;
  padding: 12px 14px;
  border: 1.5px solid var(--line);
  border-radius: 14px;
  background: #fff;
}

select {
  width: 100%;
  min-height: 52px;
  padding: 12px 14px;
  border: 1.5px solid var(--line);
  border-radius: 14px;
  background: #fff;
  color: inherit;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 16 16'%3E%3Cpath fill='%235b6578' d='M4 6l4 5 4-5z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 40px;
}

select.has-error,
input.has-error {
  border-color: var(--danger);
}

.form-row {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr;
  gap: 12px;
}

.register-card {
  max-width: 640px;
  margin: 0 auto;
}

.register-actions {
  display: flex;
  gap: 12px;
  margin-top: 8px;
}

.register-actions .btn-primary {
  flex: 1;
}

.optional {
  color: var(--muted);
  font-weight: 500;
}

.checkbox {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  margin: 8px 0;
}

.checkbox input {
  margin-top: 3px;
  width: 18px;
  height: 18px;
  accent-color: var(--accent);
}

.site-footer {
  padding: 24px 0 32px;
  color: var(--muted);
  font-size: 13px;
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  transform: translateX(-50%);
  background: var(--navy);
  color: #fff;
  padding: 12px 18px;
  border-radius: 14px;
  z-index: 30;
}

.modal {
  position: fixed;
  inset: 0;
  background: rgba(11, 27, 58, 0.45);
  display: grid;
  place-items: center;
  padding: 20px;
  z-index: 40;
}

.modal-card {
  width: min(100%, 420px);
  padding: 28px;
  display: grid;
  gap: 12px;
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 8px;
}

.is-invisible {
  visibility: hidden;
  pointer-events: none;
}

.is-hidden,
[hidden] {
  display: none !important;
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

@media (max-width: 1024px) {
  .landing-grid,
  .lead-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .hero-visual {
    min-height: 0;
    max-width: 480px;
  }

  .preview-card {
    transform: none;
  }
}

@media (max-width: 768px) {
  .container,
  .container.narrow {
    width: min(calc(100% - 24px), var(--max));
  }

  .header-note {
    display: none;
  }

  .benefits,
  .answers,
  .insight-grid {
    grid-template-columns: 1fr;
  }

  .skill-row {
    grid-template-columns: 1fr auto;
  }

  .skill-row span {
    grid-column: 1;
    margin-bottom: 0;
  }

  .skill-row strong {
    grid-column: 2;
    text-align: right;
  }

  .skill-bar {
    grid-column: 1 / -1;
  }

  .panel,
  .cta-banner {
    padding: 22px;
  }

  .preview-level,
  .level-code {
    font-size: 64px;
  }

  .test-nav {
    grid-template-columns: 1fr 1fr;
  }

  .test-nav .btn-ghost {
    grid-column: 1 / -1;
    order: 3;
  }

  .cta-actions .btn {
    width: 100%;
  }

  .form-row,
  .olympiad-meta {
    grid-template-columns: 1fr;
  }

  .register-actions {
    flex-direction: column-reverse;
  }

  .register-actions .btn {
    width: 100%;
  }

  .review-grid {
    grid-template-columns: repeat(5, 1fr);
  }

  .review-item {
    grid-template-columns: 40px 1fr;
  }

  .review-item-status {
    grid-column: 2;
  }

  .review-actions .btn {
    width: 100%;
  }
}

@media (max-width: 480px) {
  .benefits {
    grid-template-columns: 1fr;
  }

  h1 {
    font-size: 30px;
  }

  .question-title {
    font-size: 20px;
  }

  .btn,
  .answer {
    min-height: 56px;
  }

  .preview-level,
  .level-code {
    font-size: 56px;
  }

  .cefr-scale,
  .preview-scale {
    gap: 6px;
  }

  .cefr-scale span,
  .preview-scale span {
    font-size: 12px;
    padding: 8px 2px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}