:root {
  color-scheme: light;
  --bg: #f4f7f3;
  --bg-accent:
    radial-gradient(circle at top left, rgba(96, 165, 250, 0.12), transparent 30%),
    radial-gradient(circle at top right, rgba(34, 197, 94, 0.12), transparent 26%);
  --panel: rgba(255, 255, 255, 0.94);
  --panel-strong: #ffffff;
  --ink: #112014;
  --muted: #5f6f62;
  --line: rgba(16, 24, 16, 0.08);
  --line-strong: rgba(16, 24, 16, 0.14);
  --brand: #1f7a38;
  --brand-dark: #14532d;
  --brand-soft: #eaf7ee;
  --blue-soft: #eef5ff;
  --blue-line: #c8daf8;
  --warn: #8a5a00;
  --warn-soft: #fff5de;
  --shadow: 0 18px 48px rgba(16, 24, 16, 0.08);
  --shadow-soft: 0 10px 24px rgba(16, 24, 16, 0.05);
  --radius: 24px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  background-image: var(--bg-accent);
  color: var(--ink);
  line-height: 1.6;
}

a {
  color: var(--brand);
  text-decoration: none;
  transition: color 0.18s ease, opacity 0.18s ease, background-color 0.18s ease, border-color 0.18s ease;
}

a:hover {
  color: var(--brand-dark);
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 3px solid rgba(47, 156, 83, 0.28);
  outline-offset: 2px;
}

code,
pre {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
}

main {
  display: grid;
  gap: 28px;
}

h1,
h2,
h3,
h4 {
  line-height: 1.15;
  margin-top: 0;
  letter-spacing: -0.03em;
}

pre {
  padding: 16px;
  border-radius: 16px;
  border: 1px solid var(--line);
  background: #f7faf7;
  overflow-x: auto;
}

ul.clean {
  list-style: none;
  padding: 0;
  margin: 0;
}

ul.clean li + li {
  margin-top: 12px;
}

.shell {
  max-width: 1200px;
  margin: 0 auto;
  padding: 16px 20px 48px;
}

.footer,
.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-soft);
  backdrop-filter: blur(14px);
}

.footer {
  padding: 18px 22px;
  display: flex;
  justify-content: space-between;
  gap: 20px;
  align-items: flex-start;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 28px;
  background: var(--panel);
  border-radius: var(--radius);
  border: 1px solid var(--line);
  margin-bottom: 28px;
  box-shadow: var(--shadow-soft);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  position: relative;
  z-index: 100;
}

.hamburger {
  display: none;
  background: none;
  border: none;
  color: var(--ink);
  cursor: pointer;
  padding: 8px;
  box-shadow: none !important;
  min-width: auto;
  min-height: auto;
}

.hamburger:hover {
  background: var(--brand-soft);
  border-radius: 8px;
}

.nav-menu {
  display: contents;
}

.nav-brand {
  min-width: 180px;
}

.brand-title {
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.brand-subtitle {
  color: var(--muted);
  font-size: 0.92rem;
}

.nav-links {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  flex: 1;
  align-items: center;
  justify-content: center;
}

.nav-links a,
.nav-auth a,
.btn-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  border-radius: 999px;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.52);
  border: 1px solid transparent;
  font-size: 0.94rem;
  white-space: nowrap;
}

.nav-links a:hover,
.nav-auth a:hover,
.btn-link:hover {
  border-color: var(--line);
  background: #ffffff;
  text-decoration: none;
}

.nav-links a.active,
.nav-auth a.active {
  background: linear-gradient(135deg, var(--brand-soft), #ffffff);
  border-color: rgba(31, 122, 56, 0.18);
  color: var(--brand-dark);
  box-shadow: inset 0 0 0 1px rgba(31, 122, 56, 0.04);
}

.nav-auth {
  display: flex;
  gap: 12px;
  align-items: center;
  flex-wrap: wrap;
  justify-content: flex-end;
  min-width: 170px;
}

.hero,
.grid {
  display: grid;
  gap: 24px;
}

.hero {
  grid-template-columns: minmax(0, 2fr) minmax(280px, 1fr);
  align-items: stretch;
}

.grid.cards {
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.grid.cards > .panel,
.article-list > .panel,
.data-list > .panel {
  height: 100%;
}

.panel {
  padding: 28px;
}

.panel > :last-child {
  margin-bottom: 0;
}

.hero-panel {
  padding: 34px;
  box-shadow: var(--shadow);
}

.hero-panel h1 {
  font-size: clamp(2.1rem, 4vw, 3.6rem);
  letter-spacing: -0.04em;
  margin-bottom: 18px;
  text-wrap: balance;
}

.hero-panel p {
  font-size: 1.04rem;
  max-width: 64ch;
}

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 14px;
}

.section-head p {
  margin: 0;
  max-width: 64ch;
}

.eyebrow {
  display: inline-block;
  padding: 6px 12px;
  border-radius: 999px;
  background: var(--brand-soft);
  color: var(--brand);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.badge {
  display: inline-block;
  padding: 6px 10px;
  border-radius: 999px;
  background: var(--brand-soft);
  font-size: 0.8rem;
  margin-right: 8px;
  margin-bottom: 8px;
  border: 1px solid rgba(31, 122, 56, 0.08);
}

.badge.warn {
  background: var(--warn-soft);
  color: var(--warn);
  border-color: rgba(138, 90, 0, 0.08);
}

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

.lead {
  font-size: 1.05rem;
  color: var(--muted);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 14px;
  margin-top: 24px;
}

.stat-card {
  padding: 18px;
  border-radius: 20px;
  border: 1px solid var(--line);
  background: linear-gradient(180deg, #ffffff, #f8fbf8);
}

.stat-value {
  display: block;
  font-size: 1.8rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 6px;
}

.cta-row {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 24px;
  align-items: stretch;
}

.btn,
button,
input[type="submit"] {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 18px;
  border-radius: 14px;
  border: 1px solid transparent;
  background: linear-gradient(135deg, var(--brand), #2f9c53);
  color: #ffffff;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 10px 22px rgba(31, 122, 56, 0.18);
  min-height: 48px;
  min-width: 154px;
}

.btn:hover,
button:hover,
input[type="submit"]:hover {
  text-decoration: none;
  opacity: 0.95;
}

.btn-secondary {
  background: #ffffff;
  color: var(--ink);
  border-color: var(--line);
  box-shadow: none;
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.72);
  color: var(--ink);
  border-color: var(--line);
  box-shadow: none;
}

.cta-row > .btn,
.cta-row > button,
.cta-row > input[type="submit"],
.cta-row > .btn-link {
  flex: 0 0 auto;
}

.highlight-panel {
  background: linear-gradient(135deg, #ffffff, #f5fbf7);
}

.soft-blue {
  background: linear-gradient(180deg, #ffffff, var(--blue-soft));
  border-color: var(--blue-line);
}

.soft-warn {
  background: linear-gradient(180deg, #fffdf8, var(--warn-soft));
  border-color: #ead3ab;
}

.panel-success {
  background: linear-gradient(180deg, #ffffff, #eef9ef);
  border-color: #a8d5ac;
}

.stack > * + * {
  margin-top: 16px;
}

.stack-sm > * + * {
  margin-top: 10px;
}

.stack-lg > * + * {
  margin-top: 24px;
}

.article-list,
.data-list {
  display: grid;
  gap: 16px;
}

.card-title {
  margin-bottom: 8px;
}

.card-title a {
  color: var(--ink);
}

.card-title a:hover {
  color: var(--brand);
}

.meta-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items: center;
  margin-bottom: 8px;
}

.info-strip {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 18px;
  color: var(--muted);
  font-size: 0.95rem;
}

.info-chip {
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid var(--line);
}

.step-strip {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 18px;
}

.step-strip span {
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.95rem;
}

.callout {
  border-left: 4px solid var(--brand);
  padding-left: 16px;
}

.divider {
  height: 1px;
  background: var(--line);
  margin: 24px 0;
}

.inline-form {
  margin: 0;
}

.panel-inline {
  margin: 16px 0;
}

.list-tight li + li {
  margin-top: 10px;
}

.list-compact li + li {
  margin-top: 8px;
}

.content-prose {
  max-width: 74ch;
}

.field-group ul {
  margin-top: 4px;
}

.field-group {
  display: grid;
  gap: 8px;
}

.state-grid {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.parent-grid {
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
}

.calculator-shell {
  display: grid;
  gap: 18px;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  align-items: start;
}

.parent-card {
  background: linear-gradient(180deg, #ffffff, #f8fcf8);
}

.compact-parent {
  gap: 16px;
}

.trait-stack {
  display: grid;
  gap: 14px;
}



.inline-actions {
  display: flex;
  margin-top: 14px;
}

.result-preview {
  grid-column: 1 / -1;
  background: linear-gradient(180deg, #ffffff, #f7fbff);
  margin-top: 10px;
}

.result-list {
  display: grid;
  gap: 12px;
}

.result-item {
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.82);
}

.empty-result {
  padding: 18px;
  border: 1px dashed var(--line-strong);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.66);
}

.result-grid {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

input[type="text"],
input[type="password"],
select,
textarea {
  width: 100%;
  padding: 12px 14px;
  margin-top: 8px;
  border: 1px solid var(--line-strong);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.94);
  color: var(--ink);
  font: inherit;
}

textarea {
  min-height: 148px;
  resize: vertical;
}

.footer {
  margin-top: 28px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(248, 252, 248, 0.95));
}

@media (max-width: 1024px) {
  .shell {
    padding: 20px 20px 40px;
  }

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

  .nav {
    top: 12px;
  }
}

@media (max-width: 800px) {
  .nav,
  .footer {
    flex-direction: column;
    align-items: stretch;
  }

  .calculator-shell {
    grid-template-columns: 1fr;
  }

  .nav {
    position: static;
  }

  .nav-brand,
  .nav-auth {
    min-width: 0;
  }

  .nav-links,
  .nav-auth {
    justify-content: flex-start;
  }

  .nav-links {
    flex-wrap: nowrap;
    overflow-x: auto;
    padding-bottom: 4px;
    scrollbar-width: thin;
    -webkit-overflow-scrolling: touch;
  }

  .nav-links a {
    flex: 0 0 auto;
  }

  .hero-panel {
    padding: 28px;
  }

  .panel {
    padding: 22px;
  }

  .section-head {
    align-items: flex-start;
    flex-direction: column;
  }


}

@media (max-width: 560px) {
  .shell {
    padding: 14px 14px 32px;
  }

  main {
    gap: 20px;
  }

  .nav,
  .footer,
  .panel,
  .hero-panel {
    border-radius: 20px;
  }

  .nav,
  .footer,
  .panel {
    padding: 18px;
  }

  .nav-links {
    gap: 8px;
  }

  .nav-auth a,
  .btn,
  button,
  input[type="submit"] {
    width: 100%;
  }

  .nav-links a,
  .btn-link {
    width: auto;
  }

  .cta-row > * {
    width: 100%;
  }

  .cta-row > .btn-link {
    width: 100%;
    justify-content: center;
  }

  .stats-grid,
  .grid.cards,
  .state-grid,
  .result-grid {
    grid-template-columns: 1fr;
  }

  .info-strip,
  .meta-row,
  .step-strip {
    gap: 10px;
  }

  .hero-panel h1 {
    font-size: 1.9rem;
  }
}

@media (max-width: 800px) {
  .calculator-shell {
    grid-template-columns: 1fr;
  }
  
  .hamburger {
    display: block;
  }

  .nav {
    flex-wrap: wrap;
  }

  .nav-menu {
    display: none;
    flex-basis: 100%;
    flex-direction: column;
    gap: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--line);
    margin-top: 12px;
  }

  .nav-menu.show {
    display: flex;
  }

  .nav-links {
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
    padding-bottom: 0;
  }

  .nav-auth {
    display: flex;
    flex-direction: column;
  }
}

/* Article Content Styling */
.article-content .content-body h2 {
  font-size: 1.8rem;
  margin-top: 2rem;
  margin-bottom: 1rem;
  color: #111;
}
.article-content .content-body h3 {
  font-size: 1.4rem;
  margin-top: 1.5rem;
  margin-bottom: 0.8rem;
  color: #222;
}
.article-content .content-body h4 {
  font-size: 1.1rem;
  margin-top: 1.2rem;
  margin-bottom: 0.5rem;
  color: #333;
}
.article-content .content-body p {
  margin-bottom: 1.2rem;
}
.article-content .content-body ul, .article-content .content-body ol {
  margin-bottom: 1.5rem;
  padding-left: 1.5rem;
}
.article-content .content-body li {
  margin-bottom: 0.5rem;
}
.article-content .content-body hr {
  border: none;
  border-top: 1px solid var(--line);
  margin: 2rem 0;
}

/* Calculator Modern Layout (lovebirdgenetics.com clone) */
.calculator-section {
  margin-top: 24px;
  margin-bottom: 60px;
}
.calculator-shell {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
  align-items: start;
}
.parents-column {
  display: flex;
  flex-direction: column;
  gap: 32px;
}
.parent-card {
  background: #ffffff;
  border-radius: 16px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.04);
  overflow: hidden;
  border: 1px solid var(--line);
}
.parent-header {
  background: #111111;
  color: #ffffff;
  padding: 16px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.parent-header h3 {
  margin: 0;
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  gap: 8px;
}
.parent-badge {
  font-size: 0.75rem;
  font-weight: 700;
  background: #ffffff;
  color: #111111;
  padding: 4px 10px;
  border-radius: 6px;
  letter-spacing: 0.05em;
}
.parent-body {
  padding: 24px;
}
.caps-label {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--muted);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  display: block;
  margin-bottom: 8px;
}
.input-modern {
  width: 100%;
  padding: 12px 16px;
  margin: 0 !important;
  border-radius: 8px;
  border: 1px solid var(--line-strong);
  background: #ffffff;
  font-size: 0.95rem;
  color: var(--ink);
  transition: border-color 0.2s;
}
.input-modern:focus {
  outline: none;
  border-color: var(--brand);
  background: #ffffff;
}
.mutations-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}
.btn-add-mutation {
  background: #111111 !important;
  color: #ffffff !important;
  border: none !important;
  border-radius: 20px !important;
  padding: 6px 16px !important;
  font-size: 0.85rem !important;
  font-weight: 600 !important;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: opacity 0.2s;
  min-width: auto !important;
  min-height: auto !important;
  box-shadow: none !important;
}
.btn-add-mutation:hover {
  background: #333333;
}
.trait-stack {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.trait-row {
  display: flex;
  gap: 12px;
  align-items: center;
  background: #f8fcf8;
  padding: 8px;
  border-radius: 12px;
  border: 1px solid var(--line);
}
.flex-2 { flex: 3; min-width: 0; }
.flex-1 { flex: 2; min-width: 0; }
.trait-row .input-modern {
  padding: 8px 10px;
  font-size: 0.85rem;
  text-overflow: ellipsis;
  white-space: nowrap;
  overflow: hidden;
}
.btn-remove-row {
  background: #ffffff !important;
  border: 1px solid var(--line-strong) !important;
  color: var(--muted) !important;
  border-radius: 6px !important;
  width: 32px !important;
  height: 32px !important;
  min-width: 32px !important;
  min-height: 32px !important;
  display: flex !important;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  flex-shrink: 0;
  transition: all 0.2s;
  padding: 0 !important;
  box-shadow: none !important;
}
.btn-remove-row svg {
  width: 14px;
  height: 14px;
}
.btn-remove-row:hover {
  border-color: #ff4d4d;
  color: #ff4d4d;
  background: #fff5f5;
}
.empty-mutations-msg {
  padding: 32px 16px;
  text-align: center;
  background: #f5f5f5;
  border-radius: 8px;
  border: none;
}
.empty-mutations-msg[hidden],
.trait-row[hidden] {
  display: none !important;
}
.msg-title {
  margin: 0;
  font-size: 0.9rem;
  color: #666666;
  font-weight: 600;
}
.msg-subtitle {
  margin: 4px 0 0;
  font-size: 0.8rem;
  color: #999999;
}

/* Result Card Dark Theme */
.result-card {
  background: #111111;
  border-radius: 16px;
  color: #ffffff;
  overflow: hidden;
  position: sticky;
  top: 24px;
  box-shadow: 0 12px 32px rgba(0,0,0,0.15);
}
.result-header {
  padding: 24px 24px 16px;
}
.result-header h3 {
  margin: 0;
  color: #ffffff;
  font-size: 1.2rem;
  display: flex;
  align-items: center;
}
.result-body {
  padding: 0 24px 24px;
}
.result-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 60px 0;
  color: #888888;
}
.placeholder-icon {
  font-size: 2.5rem;
  margin-bottom: 12px;
}
.steps-list {
  list-style: none;
  padding: 0;
  margin: 32px 0 0;
  text-align: left;
  display: flex;
  flex-direction: column;
  gap: 10px;
  width: 100%;
  max-width: 280px;
}
.steps-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  background: #1a1a1a;
  padding: 10px 16px;
  border-radius: 12px;
  font-size: 0.9rem;
  color: #ffffff;
  border: 1px solid #333333;
}
.step-num {
  background: rgba(255,255,255,0.1);
  color: #4ade80;
  width: 24px;
  height: 24px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  font-size: 0.8rem;
  font-weight: 700;
}
.result-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.result-item.dark-item {
  background: #1a1a1a;
  border: 1px solid #333;
  border-radius: 12px;
  padding: 16px;
}
.result-item.dark-item h4 {
  color: #ffffff;
  margin: 8px 0;
  font-size: 1.1rem;
}
.badge.dark-badge {
  background: rgba(47, 156, 83, 0.2);
  color: #4ade80;
  border: 1px solid rgba(47, 156, 83, 0.4);
}
.muted-dark {
  color: #aaaaaa;
  font-size: 0.9rem;
  margin-bottom: 4px;
}

@media (max-width: 1024px) {
  .calculator-shell {
    grid-template-columns: 1fr 1fr;
  }
  .result-column {
    grid-column: 1 / -1;
  }
  .result-card {
    position: static;
  }
}
@media (max-width: 768px) {
  .calculator-shell {
    grid-template-columns: 1fr;
  }
}

/* Logo and Navbar updates */
.nav-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}
.nav-logo {
  width: 36px;
  height: 36px;
}
.brand-text {
  display: flex;
  flex-direction: column;
}
.brand-title {
  color: #111;
}

/* Trust Section Styles */
.trust-section {
  padding: 60px 20px;
  max-width: 900px;
  margin: 40px auto 0;
  text-align: center;
}
.trust-title {
  font-size: 2rem;
  margin-bottom: 10px;
}
.trust-subtitle {
  color: #666;
  font-size: 1.1rem;
  margin-bottom: 40px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}
.trust-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
  text-align: left;
}
.trust-card {
  padding: 20px;
}
.trust-number {
  font-size: 3rem;
  font-weight: 800;
  color: #111;
  display: block;
  margin-bottom: 10px;
  line-height: 1;
}
.trust-text {
  color: #555;
  font-size: 0.95rem;
  line-height: 1.5;
}

/* Force hide hidden options across browsers */
option[hidden], option[disabled] {
    display: none !important;
}