header {
  width: 100%;
  padding: 14px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 0;
  background: var(--surface);
  border-bottom: 3px solid var(--border);
  z-index: 20;
}

.header-nav {
  display: flex;
  gap: 12px;
  align-items: center;
}

.nav-btn {
  padding: 8px 16px;
  background: var(--primary);
  color: var(--ink);
  border: 2px solid var(--border);
  font-weight: 700;
  cursor: pointer;
  font-size: 0.9rem;
  transition: all 0.2s ease;
}

.nav-btn:hover {
  transform: scale(1.05);
  box-shadow: var(--shadow);
}

.brand h1 {
  margin: 0;
  font-size: 1.25rem;
  background: var(--primary);
  display: inline-block;
  padding: 4px 10px;
  border: 2px solid var(--border);
}

.brand p {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 600;
}

main {
  width: min(1240px, calc(100% - 32px));
  margin: 0 auto;
  padding: 30px 0 70px;
}

.page-grid {
  display: grid;
  grid-template-columns: 210px 1fr;
  gap: 18px;
  align-items: start;
}

.alras-sidebar {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 14px;
  background: var(--surface);
  border: 3px solid var(--border);
  box-shadow: var(--shadow);
}

.sidebar-title {
  margin: 0 0 6px;
  font-size: 0.9rem;
  color: var(--muted);
}

.alras-item {
  padding: 12px 10px;
  border: 2px solid var(--border);
  background: transparent;
  color: var(--text);
  text-align: left;
  cursor: pointer;
  font-weight: 700;
}

.alras-item:hover,
.alras-item.active {
  background: var(--primary);
}

.page-content {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.hero {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 0;
  border: 3px solid var(--border);
  box-shadow: var(--shadow);
}

.hero-copy {
  background: var(--primary);
  padding: 32px;
  border-right: 3px solid var(--border);
}

.hero-copy h2 {
  margin: 0 0 12px;
  font-size: clamp(2.4rem, 5vw, 4.5rem);
  line-height: 0.95;
}

.hero-copy p {
  margin: 0;
  color: #222;
  line-height: 1.8;
  font-weight: 600;
}

.hero-panel {
  padding: 18px;
  background: var(--surface);
}

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

.feature-card {
  padding: 14px;
  background: var(--surface-soft);
  border: 2px solid var(--border);
  display: grid;
  grid-template-columns: 40px 1fr;
  gap: 10px;
  cursor: pointer;
}

.feature-card:hover {
  background: #fff;
}

.feature-card span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border: 2px solid var(--border);
  background: #111;
  color: var(--primary);
  font-weight: 700;
}

.feature-card h3 {
  margin: 0 0 6px;
  font-size: 1.05rem;
}

.feature-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.5;
}

.hidden {
  display: none !important;
}

.app-screen {
  display: none;
  width: 100%;
  margin-top: 12px;
}

.jump-in {
  animation: jumpIn 320ms ease-out;
}

@keyframes jumpIn {
  0% {
    opacity: 0;
    transform: translateY(18px) scale(0.98);
  }
  65% {
    opacity: 1;
    transform: translateY(-6px) scale(1.01);
  }
  100% {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px;
  border: 3px solid var(--border);
  background: var(--surface);
  margin-bottom: 16px;
}

.app-header h3 {
  margin: 0;
}

.muted-subtitle {
  margin: 6px 0 0;
  color: var(--muted);
}

.app-header button,
.controls button,
.wordle-input-area button,
.wordle-new-game,
#set-challenge-submit,
#set-challenge-newset {
  border: 2px solid var(--border);
  background: var(--primary);
  color: #111;
  padding: 10px 16px;
  border-radius: 0;
  font-weight: 700;
  cursor: pointer;
}

.controls {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 18px;
}

.controls button.secondary {
  background: #fff;
}

.controls button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.progress {
  margin-top: 12px;
  color: var(--muted);
  text-align: center;
  font-weight: 700;
}

.set-challenge-container,
.update-logs-container,
.wordle-container,
.history-table,
.cold-war-frame {
  background: var(--surface);
  border: 3px solid var(--border);
  box-shadow: var(--shadow);
  border-radius: 0;
}

.set-challenge-container,
.wordle-container,
.update-logs-container,
.history-table,
.cold-war-frame {
  padding: 20px;
}

.set-challenge-row label {
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 700;
}

.set-challenge-input,
.wordle-input-area input {
  width: 100%;
  padding: 10px 12px;
  border: 2px solid var(--border);
  background: #fff;
  color: var(--text);
  font-weight: 700;
  border-radius: 0;
}

.set-challenge-actions,
.wordle-input-area {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.log-entry {
  display: grid;
  gap: 12px;
}

.log-date {
  font-size: 1rem;
  font-weight: 800;
  color: #111;
  padding: 10px;
  background: var(--primary);
  border: 2px solid var(--border);
}

.log-item {
  display: flex;
  gap: 10px;
  padding: 10px;
  border: 2px solid var(--border);
  background: #fff;
}

.log-badge {
  color: var(--success);
  font-weight: 800;
}

.wordle-status {
  text-align: center;
  font-size: 1.05rem;
  font-weight: 800;
  min-height: 26px;
}

.status-win {
  color: var(--success);
}

.status-lose {
  color: var(--danger);
}

.word-display {
  font-size: 2.2rem;
  letter-spacing: 0.28em;
  font-weight: 900;
  color: #111;
  font-family: 'Courier New', monospace;
  margin: 14px 0;
}

.wordle-guesses {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-height: 80px;
}

.guess-line {
  display: flex;
  gap: 6px;
  justify-content: center;
}

.letter-box {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  font-size: 1.1rem;
  font-weight: 800;
  border-radius: 0;
  color: var(--text);
  border: 2px solid var(--border);
  background: #fff;
}

.letter-box.correct {
  background: #65d463;
}

.letter-box.present {
  background: var(--primary);
}

.letter-box.absent {
  background: #cfcfcf;
  color: #6b6b6b;
}

.wordle-attempts {
  text-align: center;
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 700;
}

.history-table table {
  width: 100%;
  border-collapse: collapse;
  color: var(--text);
}

.history-table th,
.history-table td {
  padding: 12px;
  border: 2px solid var(--border);
  text-align: left;
  background: #fff;
}

.history-table thead th {
  background: var(--primary);
  color: #111;
  font-weight: 800;
}

.cold-war-frame iframe {
  width: 100%;
  min-height: 720px;
  height: calc(100vh - 280px);
  border: 2px solid var(--border);
  background: #fff;
}

@media (max-width: 980px) {
  .page-grid {
    grid-template-columns: 1fr;
  }

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

  .hero-copy {
    border-right: 0;
    border-bottom: 3px solid var(--border);
  }
}

@media (max-width: 720px) {
  header {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }

  .hero-copy,
  .hero-panel,
  .app-header {
    padding: 16px;
  }

  .feature-card {
    grid-template-columns: 1fr;
  }
}

.page-footer {
  width: 100%;
  padding: 24px;
  background: var(--surface);
  border-top: 3px solid var(--border);
  text-align: center;
  margin-top: 60px;
}

.footer-content {
  width: min(1240px, calc(100% - 32px));
  margin: 0 auto;
  color: var(--text);
  font-weight: 600;
}

.feature-footer {
  display: none;
}