:root {
  color-scheme: light;
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #08111f;
  color: #172033;
  --navy: #08111f;
  --ink: #172033;
  --muted: #657188;
  --panel: #ffffff;
  --panel-soft: #f6f8fc;
  --line: #d9e0ee;
  --blue: #1957d2;
  --blue-dark: #0c3f9d;
  --green: #0c7c59;
  --gold: #b7791f;
  --red: #ba1a1a;
  --shadow: 0 24px 70px rgba(2, 8, 23, 0.22);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-width: 320px;
  min-height: 100vh;
  background:
    radial-gradient(circle at top left, rgba(25, 87, 210, 0.45), transparent 32rem),
    radial-gradient(circle at top right, rgba(12, 124, 89, 0.38), transparent 28rem),
    var(--navy);
}

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

button {
  border: 0;
  border-radius: 999px;
  background: var(--blue);
  color: #ffffff;
  font-weight: 800;
  padding: 0.72rem 1rem;
  cursor: pointer;
  transition:
    transform 160ms ease,
    box-shadow 160ms ease,
    background 160ms ease;
}

button:hover:not(:disabled) {
  background: var(--blue-dark);
  transform: translateY(-1px);
  box-shadow: 0 10px 18px rgba(25, 87, 210, 0.22);
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.62;
}

input,
textarea,
select {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 0.9rem;
  color: var(--ink);
  background: #ffffff;
  padding: 0.82rem 0.95rem;
}

textarea {
  min-height: 8rem;
  resize: vertical;
}

label {
  font-weight: 800;
}

progress {
  width: 100%;
  height: 0.8rem;
  border: 0;
  border-radius: 999px;
  overflow: hidden;
  background: #e8edf7;
}

progress::-webkit-progress-bar {
  background: #e8edf7;
}

progress::-webkit-progress-value {
  background: linear-gradient(90deg, var(--blue), var(--green));
}

progress::-moz-progress-bar {
  background: linear-gradient(90deg, var(--blue), var(--green));
}

.app-shell {
  width: min(1440px, 100%);
  margin: 0 auto;
  padding: 1rem;
}

.skip-link {
  position: absolute;
  top: -4rem;
  left: 1rem;
  z-index: 10;
  border-radius: 0.7rem;
  background: #ffffff;
  color: var(--blue-dark);
  font-weight: 800;
  padding: 0.75rem 1rem;
}

.skip-link:focus {
  top: 1rem;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 1rem;
  align-items: center;
  margin: 0 auto 1rem;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 2rem;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.94), rgba(238, 244, 255, 0.9)),
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160' viewBox='0 0 160 160'%3E%3Cg fill='none' stroke='%231957d2' stroke-opacity='.08'%3E%3Cpath d='M80 8a72 72 0 1 0 0 144A72 72 0 0 0 80 8Z'/%3E%3Cpath d='M80 8v144M8 80h144M29 29l102 102M131 29 29 131'/%3E%3C/g%3E%3C/svg%3E");
  box-shadow: var(--shadow);
  padding: clamp(1.25rem, 2vw, 2rem);
}

.hero h1,
.panel h2,
.panel h3,
.panel h4,
.panel p {
  margin-top: 0;
}

.hero h1 {
  max-width: 16ch;
  margin-bottom: 0.75rem;
  color: var(--ink);
  font-size: clamp(2.2rem, 5vw, 5rem);
  line-height: 0.95;
  letter-spacing: -0.08em;
}

.hero-copy {
  max-width: 70ch;
  margin-bottom: 0;
  color: var(--muted);
  font-size: 1.08rem;
}

.eyebrow {
  margin-bottom: 0.35rem;
  color: var(--blue-dark);
  font-size: 0.77rem;
  font-weight: 900;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.hero-actions {
  display: grid;
  gap: 0.8rem;
  justify-items: end;
}

.score-card {
  min-width: 12rem;
  border: 1px solid var(--line);
  border-radius: 1.4rem;
  background: #ffffff;
  padding: 1rem;
}

.score-card span,
.score-card small {
  display: block;
  color: var(--muted);
  font-weight: 800;
}

.score-card strong {
  display: block;
  color: var(--blue-dark);
  font-size: 2rem;
  line-height: 1.05;
}

.score-card.muted strong {
  color: var(--ink);
}

.secondary-button {
  border: 1px solid var(--line);
  background: #ffffff;
  color: var(--blue-dark);
}

.secondary-button:hover:not(:disabled) {
  background: #f2f6ff;
}

.main-grid {
  display: grid;
  gap: 1rem;
}

.panel,
.alert,
.notice {
  border: 1px solid var(--line);
  border-radius: 1.5rem;
  background: var(--panel);
  box-shadow: 0 18px 50px rgba(2, 8, 23, 0.12);
  padding: clamp(1rem, 2vw, 1.45rem);
}

.alert {
  display: grid;
  gap: 0.25rem;
  border-color: rgba(186, 26, 26, 0.35);
  background: #fff3f3;
  color: #6c1212;
}

.notice {
  border-color: rgba(12, 124, 89, 0.35);
  background: #effaf5;
  color: #064c36;
  font-weight: 800;
}

.loading-panel,
.onboarding,
.welcome-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(18rem, 0.75fr);
  gap: 1rem;
  align-items: center;
}

.spinner {
  width: 3rem;
  height: 3rem;
  border: 0.45rem solid #dce6fa;
  border-top-color: var(--blue);
  border-radius: 50%;
  animation: spin 900ms linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(1turn);
  }
}

.onboarding-form,
.memory-form {
  display: grid;
  gap: 0.72rem;
  border-radius: 1.2rem;
  background: var(--panel-soft);
  padding: 1rem;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.7rem;
}

.stat-card {
  border: 1px solid var(--line);
  border-radius: 1rem;
  background: var(--panel-soft);
  padding: 0.85rem;
}

.stat-card span,
.stat-card small {
  display: block;
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 800;
}

.stat-card strong {
  display: block;
  color: var(--ink);
  font-size: 1.8rem;
  line-height: 1;
}

.section-heading {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.section-heading h2 {
  margin-bottom: 0.25rem;
  font-size: clamp(1.45rem, 2.4vw, 2.2rem);
  letter-spacing: -0.04em;
}

.pill,
.rarity {
  display: inline-flex;
  width: fit-content;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #eef4ff;
  color: var(--blue-dark);
  font-size: 0.74rem;
  font-weight: 900;
  letter-spacing: 0.04em;
  padding: 0.28rem 0.58rem;
  text-transform: uppercase;
}

.pill.success {
  border-color: rgba(12, 124, 89, 0.28);
  background: #e7f8f0;
  color: var(--green);
}

.challenge-grid,
.prediction-grid,
.badge-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.9rem;
}

.challenge-card,
.collection-card,
.trivia-card,
.prediction-card,
.badge-card,
.memory-card {
  display: grid;
  gap: 0.8rem;
  align-content: space-between;
  border: 1px solid var(--line);
  border-radius: 1.1rem;
  background: var(--panel-soft);
  padding: 1rem;
}

.challenge-card-heading {
  display: flex;
  gap: 0.6rem;
  align-items: flex-start;
  justify-content: space-between;
}

.challenge-card h3,
.collection-card h4,
.trivia-card h3,
.prediction-card h3,
.badge-card h3,
.memory-card h3 {
  margin-bottom: 0.35rem;
  color: var(--ink);
  line-height: 1.1;
}

.challenge-card p,
.collection-card p,
.trivia-card p,
.prediction-card p,
.badge-card p,
.memory-card p,
.empty-state p {
  color: var(--muted);
}

.collection-section {
  display: grid;
  gap: 0.8rem;
  margin-top: 1.3rem;
}

.collection-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 0.75rem;
}

.collection-card {
  min-height: 14rem;
}

.collection-card.rarity-epic,
.collection-card.rarity-legendary,
.badge-card.tier-gold,
.badge-card.tier-platinum {
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.95), rgba(255, 249, 222, 0.9)),
    var(--panel-soft);
}

.trivia-list {
  display: grid;
  gap: 0.85rem;
}

.trivia-card {
  grid-template-columns: minmax(0, 1fr) minmax(17rem, 0.8fr);
  align-items: center;
}

.answer-grid,
.prediction-actions {
  display: grid;
  gap: 0.55rem;
}

.answer-grid button,
.prediction-actions button {
  border: 1px solid var(--line);
  background: #ffffff;
  color: var(--blue-dark);
  text-align: left;
}

.answer-grid button:hover:not(:disabled),
.prediction-actions button:hover:not(:disabled) {
  background: #eef4ff;
}

.correct-text {
  color: var(--green) !important;
  font-weight: 800;
}

.incorrect-text {
  color: var(--gold) !important;
  font-weight: 800;
}

.prediction-summary {
  border-left: 4px solid var(--green);
  padding-left: 0.7rem;
}

.memories-panel {
  display: grid;
  grid-template-columns: minmax(18rem, 0.8fr) minmax(0, 1fr);
  gap: 1rem;
}

.memories-panel .section-heading {
  grid-column: 1 / -1;
}

.memory-list {
  display: grid;
  gap: 0.75rem;
}

.badge-icon {
  font-size: 2.4rem;
}

.table-wrap {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 44rem;
}

th,
td {
  border-bottom: 1px solid var(--line);
  padding: 0.85rem;
  text-align: left;
}

th {
  color: var(--muted);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

td small {
  display: block;
  color: var(--muted);
}

.current-user-row {
  background: #eefaf5;
  font-weight: 900;
}

.timeline {
  display: grid;
  gap: 0.75rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.timeline li {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 1rem;
  align-items: start;
  border-left: 4px solid var(--blue);
  border-radius: 0.8rem;
  background: var(--panel-soft);
  padding: 0.9rem;
}

.timeline h3 {
  margin: 0 0 0.25rem;
}

.timeline p {
  margin-bottom: 0.25rem;
  color: var(--muted);
}

.empty-state {
  border: 1px dashed #b7c3d8;
  border-radius: 1rem;
  background: #f8faff;
  padding: 1rem;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  overflow: hidden;
  white-space: nowrap;
}

@media (max-width: 1180px) {
  .challenge-grid,
  .badge-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .collection-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .prediction-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .stats-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 780px) {
  .app-shell {
    padding: 0.55rem;
  }

  .hero,
  .loading-panel,
  .onboarding,
  .welcome-panel,
  .trivia-card,
  .memories-panel {
    grid-template-columns: 1fr;
  }

  .hero-actions {
    justify-items: stretch;
  }

  .score-card {
    min-width: 0;
  }

  .section-heading {
    display: grid;
  }

  .challenge-grid,
  .collection-grid,
  .prediction-grid,
  .badge-grid {
    grid-template-columns: 1fr;
  }

  .hero h1 {
    font-size: clamp(2.2rem, 16vw, 4rem);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition: none !important;
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
  }
}