:root {
  --bg: #0c1220;
  --panel: #121a2c;
  --panel-2: #0f172a;
  --accent: #5de0e6;
  --accent-2: #7c7bff;
  --ink: #e7eefc;
  --muted: #9fb2d7;
  --card: linear-gradient(135deg, rgba(93, 224, 230, 0.08), rgba(124, 123, 255, 0.08));
  --glow: 0 10px 50px rgba(93, 224, 230, 0.25);
  --radius: 18px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Space Grotesk", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: radial-gradient(circle at 10% 20%, rgba(124, 123, 255, 0.09), transparent 25%), radial-gradient(circle at 80% 0%, rgba(93, 224, 230, 0.12), transparent 25%), var(--bg);
  color: var(--ink);
  min-height: 100vh;
}

a {
  color: inherit;
  text-decoration: none;
}

#app {
  max-width: 1200px;
  margin: 0 auto;
  padding: 32px 20px 64px;
}

.shell {
  background: var(--panel);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--glow);
}

.hero {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
  align-items: center;
  margin-bottom: 28px;
}

.hero h1 {
  font-size: 40px;
  letter-spacing: -0.5px;
  margin: 0 0 12px;
}

.hero p {
  color: var(--muted);
  line-height: 1.6;
  margin: 0 0 12px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 999px;
  background: linear-gradient(135deg, rgba(93, 224, 230, 0.18), rgba(124, 123, 255, 0.14));
  color: var(--ink);
  font-weight: 600;
  font-size: 13px;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 12px;
}

.custom-form {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
  align-items: start;
}

.custom-input {
  padding: 14px 12px;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.05);
  color: var(--ink);
  min-width: 220px;
  min-height: 68px;
  flex: 1 1 220px;
  resize: vertical;
  line-height: 1.5;
  white-space: pre-wrap;
}

.custom-help {
  color: var(--muted);
  font-size: 12px;
  margin-top: 4px;
}

.custom-box {
  padding: 14px;
  border: 1px solid rgba(93, 224, 230, 0.4);
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(93, 224, 230, 0.16), rgba(124, 123, 255, 0.14));
  max-width: 520px;
  width: 100%;
  display: block;
  box-shadow: 0 10px 30px rgba(93, 224, 230, 0.18);
  margin-top: 12px;
}

.custom-label {
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--ink);
}

.select {
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid rgba(93, 224, 230, 0.6);
  background: rgba(255, 255, 255, 0.92);
  color: #0c1220;
  font-weight: 700;
}

.select option {
  color: #0c1220;
  background: #f3f7ff;
  font-weight: 600;
}

.btn {
  border: none;
  padding: 12px 16px;
  border-radius: 12px;
  cursor: pointer;
  font-weight: 600;
  color: var(--ink);
  background: linear-gradient(135deg, #5de0e6, #7c7bff);
  box-shadow: 0 14px 30px rgba(124, 123, 255, 0.25);
  transition: transform 160ms ease, box-shadow 160ms ease;
}

.btn.secondary {
  background: rgba(255, 255, 255, 0.08);
  box-shadow: none;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 20px 34px rgba(93, 224, 230, 0.24);
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 18px;
  margin-top: 12px;
}

.card {
  background: var(--card);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius);
  padding: 18px;
  backdrop-filter: blur(6px);
}

.card h3 {
  margin: 0 0 6px;
}

.card p {
  margin: 0 0 10px;
  color: var(--muted);
}

.meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  color: var(--muted);
  font-size: 13px;
}

.section-title {
  margin: 18px 0 8px;
  font-size: 22px;
}

.pill {
  display: inline-flex;
  align-items: center;
  padding: 6px 10px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.05);
  color: var(--ink);
  font-size: 13px;
  margin: 4px 6px 0 0;
}

.accordion {
  background: var(--panel-2);
  border-radius: var(--radius);
  border: 1px solid rgba(255, 255, 255, 0.05);
  overflow: hidden;
}

.accordion-item {
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.accordion-item:first-child {
  border-top: none;
}

.accordion-header {
  display: flex;
  justify-content: space-between;
  padding: 14px 18px;
  cursor: pointer;
  font-weight: 600;
}

.accordion-content {
  padding: 0 18px 16px;
  display: none;
}

.accordion-content.open {
  display: block;
}

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.chip {
  padding: 10px 12px;
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.05);
  font-weight: 600;
  cursor: pointer;
  transition: transform 140ms ease, background 140ms ease;
}

.chip:hover {
  transform: translateY(-1px);
  background: rgba(93, 224, 230, 0.1);
}

.tag {
  background: rgba(93, 224, 230, 0.1);
  color: var(--ink);
  border-radius: 10px;
  padding: 4px 8px;
  font-size: 12px;
  margin-right: 6px;
}

.faq {
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 10px;
  margin-top: 10px;
}

.faq h4 {
  margin: 0 0 4px;
}

.faq p {
  margin: 0 0 8px;
  color: var(--muted);
}

.game-shell {
  background: linear-gradient(135deg, rgba(93, 224, 230, 0.08), rgba(124, 123, 255, 0.08));
  border-radius: var(--radius);
  padding: 16px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  width: 100%;
  max-width: 680px;
  margin: 0 auto;
}

.game-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(22px, 1fr));
  gap: 4px;
  margin: 10px 0 14px;
  user-select: none;
}

.game-grid-wrap {
  position: relative;
}

.overlay-layer {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.overlay-stroke {
  position: absolute;
  border-radius: 10px;
  opacity: 0.78;
}

.overlay-preview {
  background: color-mix(in srgb, var(--brush-color, #7c7bff) 40%, #ffffff 60%);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--brush-color, #7c7bff) 15%, transparent);
}

.overlay-found {
  background: color-mix(in srgb, var(--brush-color, #7c7bff) 50%, #ffffff 50%);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--brush-color, #7c7bff) 15%, transparent);
}

.overlay-hint {
  background: color-mix(in srgb, var(--brush-color, #7c7bff) 25%, #ffffff 75%);
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--brush-color, #7c7bff) 12%, transparent);
}

.game-cell {
  aspect-ratio: 1 / 1;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 10px;
  display: grid;
  place-items: center;
  color: var(--ink);
  font-weight: 600;
  cursor: pointer;
  user-select: none;
  transition: background 120ms ease, box-shadow 120ms ease, transform 120ms ease;
}

.word-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  color: var(--muted);
}

.game-cell.selected {
  outline: 2px solid var(--accent);
  background: rgba(93, 224, 230, 0.18);
}

.game-cell.preview {
  background: color-mix(in srgb, var(--brush-color, #7c7bff) 45%, #ffffff 55%);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--brush-color, #7c7bff) 20%, transparent);
}

.game-cell.found {
  background: linear-gradient(135deg, color-mix(in srgb, var(--brush-color, #7c7bff) 55%, #ffffff 45%), color-mix(in srgb, var(--brush-color, #7c7bff) 45%, #ffffff 55%));
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--brush-color, #7c7bff) 18%, transparent);
  color: #0c1220;
  font-weight: 700;
}

.word-pill {
  display: inline-flex;
  align-items: center;
  padding: 6px 10px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.07);
  color: var(--ink);
  font-weight: 600;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.word-pill.found {
  background: color-mix(in srgb, var(--brush-color, #5de0e6) 70%, #ffffff 30%);
  border-color: color-mix(in srgb, var(--brush-color, #5de0e6) 60%, transparent);
  color: #0c1220;
  box-shadow: 0 6px 18px color-mix(in srgb, var(--brush-color, #5de0e6) 35%, transparent);
}

.print-link {
  display: none;
  margin-top: 8px;
  font-size: 12px;
  color: var(--muted);
}

.footer {
  max-width: 1200px;
  margin: 12px auto 28px;
  padding: 0 16px;
  display: flex;
  justify-content: center;
  gap: 18px;
  color: var(--muted);
  text-align: center;
}

.footer a {
  color: var(--ink);
  opacity: 0.85;
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.footer a:hover {
  opacity: 1;
  border-color: rgba(255, 255, 255, 0.2);
}

.longform {
  color: var(--muted);
  line-height: 1.7;
}

.seo-section {
  margin-top: 12px;
  background: var(--panel-2);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--radius);
  padding: 18px;
}

.seo-section h2 {
  margin: 0 0 10px;
  font-size: 22px;
  color: var(--ink);
}

.seo-section h3 {
  margin: 12px 0 6px;
  font-size: 18px;
  color: var(--ink);
}

.seo-cols {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 12px;
  margin: 12px 0;
}

.seo-card {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 14px;
  padding: 14px;
}

.seo-card ul {
  margin: 6px 0 0;
  padding-left: 16px;
  color: var(--muted);
  line-height: 1.6;
}

.stat-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  color: var(--muted);
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 14px;
}

.nav a {
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.05);
  font-weight: 600;
}

.breadcrumbs {
  color: var(--muted);
  font-size: 13px;
  margin-bottom: 8px;
}

@media print {
  body {
    background: #fff;
    color: #000;
    margin: 0;
    padding: 0;
  }
  @page { margin: 10mm; }
  #app {
    margin: 0;
    padding: 0;
    width: 100%;
  }
  .shell { display: none !important; }
  .shell:has(.game-shell) {
    display: block !important;
    margin: 0 auto !important;
    padding: 0 !important;
    width: 100% !important;
    background: transparent !important;
    border: none !important;
    box-shadow: none !important;
  }
  .shell:has(.game-shell) > :not(.game-shell):not(:has(.game-shell)) {
    display: none !important;
  }
  .hero.shell > :not(.game-shell):not(:has(.game-shell)),
  .shell:has(.game-shell) > :not(.game-shell):not(:has(.game-shell)) {
    display: none !important;
  }
  .game-shell {
    position: static;
    width: 80%;
    max-width: 540px;
    margin: 16mm auto 10mm;
    padding: 12px;
    background: #fff;
    border: none;
    box-shadow: none;
    color: #000;
    break-inside: avoid;
  }
  .game-shell .word-list, .game-shell .cta-row, .game-shell .meta, .game-shell .stat-row {
    visibility: visible;
  }
  .game-shell .btn, .game-shell .cta-row button {
    display: none;
  }
  .difficulty-select {
    display: none !important;
  }
  .print-link {
    display: block;
    color: #000;
  }
}

@media (max-width: 640px) {
  #app {
    padding: 20px 16px 48px;
  }
  .hero h1 {
    font-size: 32px;
  }
}