:root {
  --bg: #0f172a;
  --surface: #1e293b;
  --card: #0b1220;
  --text: #e5e7eb;
  --muted: #94a3b8;
  --accent: #22d3ee;
  --accent-hover: #06b6d4;
  --accent-light: rgba(34, 211, 238, 0.1);
  --border: #334155;
  --success: #10b981;
  --error: #ef4444;
  --shadow: rgba(0, 0, 0, 0.3);
  --shadow-lg: rgba(0, 0, 0, 0.5);

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: "SF Mono", Monaco, "Cascadia Code", "Roboto Mono", Consolas, monospace;

  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;

  --radius: 14px;
  --radius-sm: 8px;
  --radius-lg: 20px;

  --transition: 200ms ease;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #ffffff;
    --surface: #f8fafc;
    --card: #ffffff;
    --text: #0f172a;
    --muted: #64748b;
    --accent: #0891b2;
    --accent-hover: #0e7490;
    --accent-light: rgba(8, 145, 178, 0.1);
    --border: #e2e8f0;
    --shadow: rgba(0, 0, 0, 0.1);
    --shadow-lg: rgba(0, 0, 0, 0.15);
  }
}

[data-theme="light"] {
  --bg: #ffffff;
  --surface: #f8fafc;
  --card: #ffffff;
  --text: #0f172a;
  --muted: #64748b;
  --accent: #0891b2;
  --accent-hover: #0e7490;
  --accent-light: rgba(8, 145, 178, 0.1);
  --border: #e2e8f0;
  --shadow: rgba(0, 0, 0, 0.1);
  --shadow-lg: rgba(0, 0, 0, 0.15);
}

[data-theme="dark"] {
  --bg: #0f172a;
  --surface: #1e293b;
  --card: #0b1220;
  --text: #e5e7eb;
  --muted: #94a3b8;
  --accent: #22d3ee;
  --accent-hover: #06b6d4;
  --accent-light: rgba(34, 211, 238, 0.1);
  --border: #334155;
  --shadow: rgba(0, 0, 0, 0.3);
  --shadow-lg: rgba(0, 0, 0, 0.5);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

section {
  padding: var(--spacing-3xl) 0;
}

.section-title {
  font-size: 2.5rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: var(--spacing-md);
  line-height: 1.2;
}

.section-subtitle {
  font-size: 1.125rem;
  color: var(--muted);
  text-align: center;
  margin-bottom: var(--spacing-2xl);
  margin-left: auto;
  margin-right: auto;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius);
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: all var(--transition);
  white-space: nowrap;
  font-family: inherit;
}

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

.btn--primary:hover,
.btn--primary:focus {
  background: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px var(--shadow);
}

.btn--ghost {
  background: transparent;
  color: var(--text);
  border: 2px solid var(--border);
}

.btn--ghost:hover,
.btn--ghost:focus {
  border-color: var(--accent);
  color: var(--accent);
}

.btn--large {
  padding: 1rem 2rem;
  font-size: 1.125rem;
}

.btn:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--spacing-xl);
  box-shadow: 0 4px 12px var(--shadow);
  transition: all var(--transition);
}

.card:hover {
  box-shadow: 0 8px 24px var(--shadow-lg);
  transform: translateY(-4px);
}

.grid {
  display: grid;
  gap: var(--spacing-xl);
}

.grid--3 {
  grid-template-columns: 1fr;
}

.grid--4 {
  grid-template-columns: 1fr;
}

@media (min-width: 600px) {
  .grid--3,
  .grid--4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 900px) {
  .grid--3 {
    grid-template-columns: repeat(3, 1fr);
  }

  .grid--4 {
    grid-template-columns: repeat(4, 1fr);
  }
}

.nav {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  transition: all var(--transition);
}

.nav.scrolled {
  box-shadow: 0 4px 20px var(--shadow);
  backdrop-filter: blur(8px);
  background: rgba(15, 23, 42, 0.9);
}

[data-theme="light"] .nav.scrolled {
  background: rgba(255, 255, 255, 0.9);
}

.nav__container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--spacing-md);
  padding-bottom: var(--spacing-md);
  gap: var(--spacing-lg);
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  text-decoration: none;
  color: var(--text);
  font-weight: 700;
  font-size: 1.25rem;
}

.nav__brand {
  display: none;
}

@media (min-width: 600px) {
  .nav__brand {
    display: block;
  }
}

.nav__links {
  display: none;
  gap: var(--spacing-lg);
}

@media (min-width: 900px) {
  .nav__links {
    display: flex;
  }
}

.nav__link {
  color: var(--muted);
  text-decoration: none;
  font-weight: 500;
  transition: color var(--transition);
  position: relative;
}

.nav__link:hover,
.nav__link:focus {
  color: var(--accent);
}

.nav__link.active {
  color: var(--accent);
}

.nav__link.active::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--accent);
}

.nav__actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.hero {
  padding: var(--spacing-3xl) 0;
  background: linear-gradient(135deg, var(--bg) 0%, var(--surface) 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, var(--accent-light) 0%, transparent 70%);
  pointer-events: none;
}

.hero__container {
  display: grid;
  gap: var(--spacing-2xl);
  align-items: center;
}

@media (min-width: 900px) {
  .hero__container {
    grid-template-columns: 1fr 1fr;
  }
}

.hero__content {
  position: relative;
  z-index: 1;
}

.hero__title {
  font-size: 3rem;
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: var(--spacing-lg);
  background: linear-gradient(135deg, var(--text) 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

@media (min-width: 600px) {
  .hero__title {
    font-size: 4rem;
  }
}

.hero__subtitle {
  font-size: 1.25rem;
  color: var(--muted);
  margin-bottom: var(--spacing-2xl);
  line-height: 1.5;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-md);
  margin-top: var(--spacing-xl);
}

.hero__illustration {
  display: none;
  justify-content: center;
  align-items: center;
}

@media (min-width: 900px) {
  .hero__illustration {
    display: flex;
  }
}

.hero__illustration img {
  max-width: 100%;
  height: auto;
}

.countdown {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
}

.countdown__item {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--spacing-lg);
  text-align: center;
}

.countdown__value {
  display: block;
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--accent);
  line-height: 1;
  margin-bottom: var(--spacing-sm);
}

.countdown__label {
  display: block;
  font-size: 0.875rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.stats {
  background: var(--surface);
  padding: var(--spacing-2xl) 0;
}

.stat-card {
  text-align: center;
  transition: all var(--transition);
}

.stat-card__value {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--accent);
  margin-bottom: var(--spacing-sm);
}

.stat-card__label {
  font-size: 1rem;
  color: var(--muted);
}

.leaderboard {
  background: var(--bg);
}

.leaderboard__container {
  margin-bottom: var(--spacing-xl);
}

.leaderboard__loading {
  text-align: center;
  padding: var(--spacing-2xl);
  color: var(--muted);
}

.leaderboard__table {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.leaderboard-row {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--spacing-lg);
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: var(--spacing-lg);
  align-items: center;
  transition: all var(--transition);
}

.leaderboard-row:hover {
  border-color: var(--accent);
  box-shadow: 0 4px 16px var(--shadow);
}

.leaderboard-row--top3 {
  background: linear-gradient(135deg, var(--card) 0%, var(--accent-light) 100%);
  border-color: var(--accent);
}

leaderboard-row--danger {
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.16) 0%, var(--card) 65%);
    border-color: rgba(239, 68, 68, 0.45);
}

.leaderboard-row--warning {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.16) 0%, var(--card) 65%);
    border-color: rgba(245, 158, 11, 0.5);
}

.leaderboard-row--success {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.14) 0%, var(--card) 65%);
    border-color: rgba(16, 185, 129, 0.45);
}

.leaderboard-row--danger .leaderboard-row__rank,
.leaderboard-row--danger .leaderboard-row__points,
.leaderboard-row--danger .leaderboard-row__progress-current {
    color: #fca5a5;
}

.leaderboard-row--warning .leaderboard-row__rank,
.leaderboard-row--warning .leaderboard-row__points,
.leaderboard-row--warning .leaderboard-row__progress-current {
    color: #fcd34d;
}

.leaderboard-row--success .leaderboard-row__rank,
.leaderboard-row--success .leaderboard-row__points,
.leaderboard-row--success .leaderboard-row__progress-current {
    color: #6ee7b7;
}

.leaderboard-row--danger .leaderboard-row__avatar {
    background: #b91c1c;
    color: #fee2e2;
}

.leaderboard-row--warning .leaderboard-row__avatar {
    background: #b45309;
    color: #fffbeb;
}

.leaderboard-row--success .leaderboard-row__avatar {
    background: #047857;
    color: #ecfdf5;
}

.leaderboard-row--danger .leaderboard-row__progress-bar {
    background: linear-gradient(90deg, #ef4444 0%, #dc2626 100%);
}

.leaderboard-row--warning .leaderboard-row__progress-bar {
    background: linear-gradient(90deg, #f59e0b 0%, #d97706 100%);
}

.leaderboard-row--success .leaderboard-row__progress-bar {
    background: linear-gradient(90deg, #10b981 0%, #059669 100%);
}

.leaderboard-row--top3.leaderboard-row--danger,
.leaderboard-row--top3.leaderboard-row--warning,
.leaderboard-row--top3.leaderboard-row--success {
    background: linear-gradient(135deg, var(--card) 0%, var(--accent-light) 100%);
    border-color: var(--accent);
}
.leaderboard-row__rank {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--accent);
  min-width: 3rem;
  text-align: center;
}

.leaderboard-row__info {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.leaderboard-row__avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--accent);
  color: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.125rem;
}

.leaderboard-row__details {
  flex: 1;
}

.leaderboard-row__name {
  font-weight: 700;
  font-size: 1.125rem;
  margin-bottom: var(--spacing-xs);
}

.leaderboard-row__prize {
  font-size: 0.875rem;
  color: var(--muted);
}

.leaderboard-row__score {
  text-align: right;
}

.leaderboard-row__points {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text);
  display: block;
  margin-bottom: var(--spacing-xs);
}

.leaderboard-row__label {
  font-size: 0.875rem;
  color: var(--muted);
}

.leaderboard-row__progress {
  grid-column: 1 / -1;
  height: 6px;
  background: var(--surface);
  border-radius: 3px;
  overflow: hidden;
  margin-top: var(--spacing-sm);
}

.leaderboard-row__progress-meta {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.75rem;
  color: var(--muted);
  margin-top: var(--spacing-sm);
  gap: var(--spacing-sm);
}

.leaderboard-row__progress-current {
  flex: 1;
  text-align: center;
  color: var(--text);
  font-weight: 600;
}

.leaderboard-row__progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--accent) 0%, var(--accent-hover) 100%);
  transition: width 500ms ease;
}

.leaderboard__actions {
  text-align: center;
}

.prizes {
  background: var(--surface);
}

.prize-card {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.prize-card__icon {
  width: 80px;
  height: 80px;
  margin-bottom: var(--spacing-lg);
}

.prize-card__title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
}

.prize-card__value {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--accent);
  margin-bottom: var(--spacing-md);
}

.prize-card__description {
  color: var(--muted);
  line-height: 1.5;
}

.prize-card--special {
  border: 2px solid var(--accent);
}

.rules {
  background: var(--bg);
}

.rules__content {
  display: grid;
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-2xl);
}

.rules-group {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--spacing-xl);
}

.rules-group__title {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: var(--spacing-lg);
  color: var(--accent);
}

.rules-list {
  list-style: none;
  padding: 0;
}

.rules-list li {
  padding-left: var(--spacing-xl);
  position: relative;
  margin-bottom: var(--spacing-md);
  line-height: 1.6;
}

.rules-list li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: 700;
}

.rules__download {
  text-align: center;
}

.schedule {
  background: var(--surface);
}

.timeline {
  max-width: 800px;
  margin: 0 auto;
  position: relative;
}

@media (min-width: 900px) {
  .timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--border);
    transform: translateX(-50%);
  }
}

.timeline-item {
  display: grid;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-2xl);
  position: relative;
}

@media (min-width: 900px) {
  .timeline-item {
    grid-template-columns: 1fr auto 1fr;
  }

  .timeline-item:nth-child(even) .timeline-card {
    grid-column: 3;
  }

  .timeline-item:nth-child(odd) .timeline-card {
    grid-column: 1;
  }

  .timeline-item:nth-child(even) .timeline-marker {
    grid-column: 2;
  }

  .timeline-item:nth-child(odd) .timeline-marker {
    grid-column: 2;
  }
}

.timeline-marker {
  width: 16px;
  height: 16px;
  background: var(--accent);
  border: 4px solid var(--bg);
  border-radius: 50%;
  position: relative;
  justify-self: center;
}

.timeline-card {
  transition: all var(--transition);
}

.timeline-date {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--spacing-sm);
}

.timeline-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
}

.timeline-description {
  color: var(--muted);
  line-height: 1.6;
}

.how-to-join {
  background: var(--bg);
}

.step-card {
  text-align: center;
  position: relative;
  padding-top: var(--spacing-2xl);
}

.step-card__number {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 48px;
  height: 48px;
  background: var(--accent);
  color: var(--bg);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 800;
}

.step-card__icon {
  color: var(--accent);
  margin-bottom: var(--spacing-lg);
}

.step-card__title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: var(--spacing-md);
}

.step-card__description {
  color: var(--muted);
  line-height: 1.6;
}

.how-to-join__cta {
  text-align: center;
  margin-top: var(--spacing-2xl);
}

.faq {
  background: var(--surface);
}

.faq__list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.faq-item {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all var(--transition);
}

.faq-item:hover {
  border-color: var(--accent);
}

.faq-item__question {
  width: 100%;
  background: transparent;
  border: none;
  padding: var(--spacing-lg);
  text-align: left;
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--spacing-md);
  font-family: inherit;
  transition: all var(--transition);
}

.faq-item__question:hover {
  color: var(--accent);
}

.faq-item__question:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: -3px;
}

.faq-item__icon {
  flex-shrink: 0;
  transition: transform var(--transition);
}

.faq-item__question[aria-expanded="true"] .faq-item__icon {
  transform: rotate(180deg);
}

.faq-item__answer {
  padding: 0 var(--spacing-lg) var(--spacing-lg);
  color: var(--muted);
  line-height: 1.6;
}

.faq-item__answer[hidden] {
  display: none;
}

.contact {
  background: var(--bg);
}

.contact__info {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.contact__info .section-title,
.contact__info .section-subtitle {
  text-align: left;
  margin-left: 0;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xl);
}

.contact-detail {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  color: var(--muted);
}

.contact-detail svg {
  color: var(--accent);
  flex-shrink: 0;
}

.contact-detail a {
  color: var(--text);
  text-decoration: none;
  transition: color var(--transition);
}

.contact-detail a:hover,
.contact-detail a:focus {
  color: var(--accent);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.form-label {
  font-weight: 600;
  font-size: 0.875rem;
}

.required {
  color: var(--error);
}

.form-input {
  padding: 0.75rem 1rem;
  font-size: 1rem;
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg);
  color: var(--text);
  font-family: inherit;
  transition: all var(--transition);
}

.form-input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-light);
}

.form-input:invalid:not(:placeholder-shown) {
  border-color: var(--error);
}

.form-textarea {
  resize: vertical;
  min-height: 120px;
}

.form-actions {
  margin-top: var(--spacing-md);
}

.form-message {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-lg);
  background: var(--accent-light);
  border: 1px solid var(--accent);
  border-radius: var(--radius-sm);
  color: var(--text);
  margin-top: var(--spacing-lg);
}

.form-message svg {
  color: var(--accent);
  flex-shrink: 0;
}

.form-message[hidden] {
  display: none;
}

.footer {
  background: var(--surface);
  border-top: 1px solid var(--border);
  padding: var(--spacing-2xl) 0 var(--spacing-xl);
}

.footer__content {
  display: grid;
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

@media (min-width: 600px) {
  .footer__content {
    grid-template-columns: 1fr auto auto;
    align-items: center;
  }
}

.footer__brand {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.footer__brand-text {
  font-weight: 700;
  font-size: 1.125rem;
}

.footer__links {
  display: flex;
  gap: var(--spacing-lg);
  flex-wrap: wrap;
}

.footer__link {
  color: var(--muted);
  text-decoration: none;
  transition: color var(--transition);
}

.footer__link:hover,
.footer__link:focus {
  color: var(--accent);
}

.footer__social {
  display: flex;
  gap: var(--spacing-md);
}

.footer__social-link {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 50%;
  color: var(--muted);
  transition: all var(--transition);
  text-decoration: none;
}

.footer__social-link:hover,
.footer__social-link:focus {
  background: var(--accent);
  color: var(--bg);
  border-color: var(--accent);
  transform: translateY(-2px);
}

.footer__bottom {
  text-align: center;
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.875rem;
}

.back-to-top {
  position: fixed;
  bottom: var(--spacing-xl);
  right: var(--spacing-xl);
  width: 48px;
  height: 48px;
  background: var(--accent);
  color: var(--bg);
  border: none;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px var(--shadow);
  transition: all var(--transition);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover,
.back-to-top:focus {
  background: var(--accent-hover);
  transform: translateY(-4px);
}

.back-to-top:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
}

.muted {
  color: var(--muted);
}

@media (max-width: 599px) {
  .section-title {
    font-size: 2rem;
  }

  .hero__title {
    font-size: 2.5rem;
  }

  .countdown__value {
    font-size: 1.75rem;
  }

  .countdown__label {
    font-size: 0.75rem;
  }

  .stat-card__value {
    font-size: 2rem;
  }

  .leaderboard-row {
    grid-template-columns: auto 1fr;
    gap: var(--spacing-md);
  }

  .leaderboard-row__rank {
    font-size: 1.25rem;
    min-width: 2rem;
  }

  .leaderboard-row__score {
    grid-column: 2;
  }

  .leaderboard-row__progress {
    grid-column: 1 / -1;
  }
}

@media print {
  .nav,
  .back-to-top,
  .hero__actions,
  .contact-text,
  .footer__social {
    display: none;
  }

  body {
    background: white;
    color: black;
  }
}