html {
  background: #111827;
}

body {
  margin: 0;
  padding: 0;
  min-height: 100%;
  background: #111827;
  color: #f4f6fb;
  font-family: Arial, Helvetica, sans-serif;
  line-height: 1.6;
}

a {
  color: #9bdcff;
}

.site-shell {
  width: 94%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 28px 0 28px 0;
}

.top-nav {
  margin-bottom: 18px;
}

.top-nav a {
  display: inline-block;
  padding: 8px 12px;
  border: 1px solid #334155;
  border-radius: 9px;
  background: #182235;
  color: #dce8f8;
  text-decoration: none;
  font-weight: bold;
}

.top-nav a:hover {
  background: #22314a;
}

.hero {
  text-align: center;
  padding: 16px 18px 32px 18px;
}

.eyebrow {
  margin: 0 0 6px 0;
  color: #7dd3fc;
  font-size: 14px;
  font-weight: bold;
  letter-spacing: 3px;
}

h1 {
  margin: 0;
  font-size: 56px;
  line-height: 1.05;
  letter-spacing: -2px;
}

.tagline {
  max-width: 700px;
  margin: 18px auto 10px auto;
  color: #b8c2d6;
  font-size: 17px;
}

.ai-note {
  display: inline-block;
  margin: 8px auto 0 auto;
  padding: 6px 11px;
  border: 1px solid #456d84;
  border-radius: 999px;
  background: #18283a;
  color: #7dd3fc;
  font-size: 13px;
  font-weight: bold;
}

.generator-panel {
  padding: 24px;
  border: 1px solid #334155;
  border-radius: 18px;
  background: #182235;
  box-sizing: border-box;
  box-shadow: 0 10px 35px rgba(0, 0, 0, 0.18);
}

.sdg-grid {
  display: flex;
  flex-wrap: wrap;
  margin: -6px;
}

.sdg-grid label {
  display: block;
  width: 25%;
  padding: 6px;
  color: #f4f6fb;
  font-weight: bold;
  box-sizing: border-box;
}

.sdg-grid select,
.sdg-grid input[type="number"] {
  display: block;
  width: 100%;
  margin-top: 5px;
  padding: 10px 11px;
  border: 1px solid #41536d;
  border-radius: 8px;
  background: #101827;
  color: #f4f6fb;
  font: inherit;
  box-sizing: border-box;
}

.sdg-grid select:focus,
.sdg-grid input[type="number"]:focus {
  outline: 2px solid #7dd3fc;
  outline-offset: 1px;
}

.field-note {
  color: #91a1b8;
  font-size: 12px;
  font-weight: normal;
}

.sdg-grid .sdg-check {
  display: flex;
  align-items: center;
  width: 25%;
  min-height: 74px;
  padding-top: 28px;
}

.sdg-check input {
  width: 18px;
  height: 18px;
  margin: 0 8px 0 0;
}

.sdg-odds {
  margin: 18px 0;
  padding: 11px 14px;
  border: 1px solid #334155;
  border-radius: 9px;
  background: #121c2c;
  color: #b8c2d6;
  font-size: 14px;
}

.sdg-actions {
  display: flex;
  flex-wrap: wrap;
  margin: 0 -5px 18px -5px;
}

.sdg-actions button {
  min-width: 150px;
  margin: 5px;
  padding: 11px 18px;
  border: 1px solid #8f7ee6;
  border-radius: 9px;
  background: #302f59;
  color: #ffffff;
  font-family: Arial, Helvetica, sans-serif;
  font-size: 16px;
  font-weight: bold;
  cursor: pointer;
}

.sdg-actions button:hover {
  background: #403d73;
}

.sdg-card {
  margin: 18px 0 0 0;
  padding: 18px;
  border: 1px solid #41536d;
  border-radius: 12px;
  background: #111b2b;
}

.sdg-title {
  margin-bottom: 5px;
  color: #ffffff;
  font-size: 20px;
  font-weight: bold;
}

.sdg-chimera {
  margin: 8px 0 12px 0;
  padding: 9px 12px;
  border-left: 4px solid #b9a8ff;
  background: #242545;
  color: #e8e1ff;
  font-weight: bold;
}

.sdg-rarity {
  margin: 8px 0 14px 0;
  color: #dce8f8;
  font-weight: bold;
}

.sdg-table {
  width: 100%;
  border-collapse: collapse;
  color: #dce8f8;
}

.sdg-table th,
.sdg-table td {
  padding: 8px 9px;
  border-bottom: 1px solid #334155;
  text-align: left;
  vertical-align: top;
}

.sdg-table th {
  color: #ffffff;
  background: #1b2940;
  font-weight: bold;
}

.sdg-table tr:last-child td {
  border-bottom: 0;
}

.sdg-error {
  margin-top: 14px;
  padding: 12px;
  border: 1px solid #a74f55;
  border-radius: 8px;
  background: #3a1c24;
  color: #ffd7db;
}

.sdg-credit {
  margin-top: 26px;
  padding: 18px 20px;
  border: 1px solid #334155;
  border-radius: 14px;
  background: #182235;
  color: #b8c2d6;
  font-size: 14px;
}

.sdg-credit p {
  margin: 5px 0;
}

.sdg-credit strong {
  color: #f4f6fb;
}

footer {
  padding: 30px 0 6px 0;
  color: #91a1b8;
  text-align: center;
  font-size: 14px;
}

@media screen and (max-width: 850px) {
  .sdg-grid label,
  .sdg-grid .sdg-check {
    width: 50%;
  }

  h1 {
    font-size: 46px;
  }
}

@media screen and (max-width: 520px) {
  .site-shell {
    width: 96%;
    padding-top: 16px;
  }

  .hero {
    padding-left: 8px;
    padding-right: 8px;
  }

  h1 {
    font-size: 36px;
    letter-spacing: -1px;
  }

  .generator-panel {
    padding: 16px;
  }

  .sdg-grid label,
  .sdg-grid .sdg-check {
    width: 100%;
  }

  .sdg-grid .sdg-check {
    min-height: 0;
    padding-top: 12px;
    padding-bottom: 12px;
  }

  .sdg-actions button {
    width: 100%;
  }

  .sdg-table {
    font-size: 13px;
  }
}