:root {
  --bg: #ffffff;
  --bg-elevated: #f7f7fb;
  --text: #111827;
  --muted: #6b7280;
  --accent: #2563eb;
  --accent-soft: #dbeafe;
  --border: #e5e7eb;
  --shadow-soft: 0 18px 40px rgba(15, 23, 42, 0.08);
}

body.dark {
  --bg: #020617;
  --bg-elevated: #020617;
  --text: #e5e7eb;
  --muted: #9ca3af;
  --accent: #38bdf8;
  --accent-soft: #0f172a;
  --border: #1f2937;
  --shadow-soft: 0 18px 40px rgba(0, 0, 0, 0.8);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: radial-gradient(circle at top, #e0f2fe 0, transparent 55%), var(--bg);
  color: var(--text);
  transition: background-color 0.3s ease, color 0.3s ease;
}

.page-wrapper {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 0.9rem 1.2rem;
  background: color-mix(in srgb, var(--bg) 94%, transparent);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.55rem;
}

.logo-mark {
  width: 34px;
  height: 34px;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 700;
  font-size: 0.9rem;
}

.logo-text {
  font-weight: 700;
  letter-spacing: 0.03em;
  font-size: 1.05rem;
}

.logo-text span {
  color: var(--accent);
}

.main-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  font-size: 0.9rem;
}

.main-nav a {
  text-decoration: none;
  color: var(--muted);
  padding: 0.25rem 0.6rem;
  border-radius: 999px;
}

.main-nav a:hover {
  color: var(--accent);
  background: var(--accent-soft);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.pill-btn,
.primary-btn,
.ghost-btn {
  border-radius: 999px;
  border: 1px solid transparent;
  padding: 0.45rem 1rem;
  font-size: 0.9rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.3rem;
  transition: transform 0.08s ease, box-shadow 0.12s ease, background-color 0.12s ease, color 0.12s ease, border-color 0.12s ease;
}

.pill-btn {
  background: var(--bg-elevated);
  border-color: var(--border);
  color: var(--muted);
}

.primary-btn {
  background: var(--accent);
  color: #f9fafb;
  box-shadow: var(--shadow-soft);
}

.primary-btn:hover {
  transform: translateY(-1px);
}

.ghost-btn {
  background: transparent;
  border-color: var(--border);
  color: var(--text);
}

.ghost-btn.small {
  padding: 0.25rem 0.7rem;
  font-size: 0.8rem;
}

.primary-btn.full-width {
  width: 100%;
}

.pill-btn:hover,
.ghost-btn:hover {
  background: var(--accent-soft);
  border-color: var(--accent-soft);
  color: var(--accent);
}

.site-main {
  flex: 1;
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 1.5rem 1.1rem 3rem;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(0, 1.3fr);
  gap: 2rem;
  align-items: center;
  margin-top: 1rem;
  margin-bottom: 2rem;
}

.hero-text h1 {
  font-size: clamp(1.9rem, 3vw, 2.5rem);
  margin-bottom: 0.75rem;
}

.hero-text p {
  margin-top: 0;
  margin-bottom: 1.1rem;
  color: var(--muted);
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 0.8rem;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-size: 0.8rem;
  color: var(--muted);
}

.hero-meta span {
  padding: 0.25rem 0.7rem;
  border-radius: 999px;
  background: var(--bg-elevated);
  border: 1px dashed var(--border);
}

.hero-card {
  background: radial-gradient(circle at top, var(--accent-soft), var(--bg-elevated));
  border-radius: 1.4rem;
  padding: 1.4rem;
  box-shadow: var(--shadow-soft);
}

.hero-card h2 {
  margin-top: 0;
}

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

.hero-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.4rem;
  font-size: 0.9rem;
  margin-bottom: 0.4rem;
}

.hero-list li::before {
  content: "✓";
  font-size: 0.85rem;
  margin-top: 0.1rem;
  color: var(--accent);
}

.card-section {
  margin-bottom: 2rem;
}

.card-section.narrow {
  max-width: 780px;
  margin-inline: auto;
}

.card-section > h2,
.card-section > h1 {
  margin-bottom: 0.6rem;
}

.card-section > p {
  margin-top: 0;
  margin-bottom: 1rem;
  color: var(--muted);
}

.card,
.results-card {
  background: var(--bg-elevated);
  border-radius: 1.3rem;
  padding: 1.3rem 1.4rem;
  box-shadow: var(--shadow-soft);
  border: 1px solid var(--border);
}

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

.longform h2 {
  margin-top: 1.6rem;
  margin-bottom: 0.4rem;
}

.longform h1 {
  margin-bottom: 1rem;
}

.calculator-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1.1fr);
  gap: 1.4rem;
  align-items: flex-start;
}

.field-group {
  margin-bottom: 0.8rem;
}

.field-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 0.7rem;
  margin-bottom: 0.7rem;
}

label {
  display: block;
  font-size: 0.85rem;
  color: var(--muted);
}

input,
select,
textarea {
  width: 100%;
  padding: 0.45rem 0.6rem;
  border-radius: 0.6rem;
  border: 1px solid var(--border);
  margin-top: 0.25rem;
  font-size: 0.9rem;
  font-family: inherit;
  background: var(--bg);
  color: var(--text);
}

textarea {
  resize: vertical;
}

input:focus,
select:focus,
textarea:focus {
  outline: 2px solid var(--accent-soft);
  border-color: var(--accent);
}

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.2rem;
  padding: 0.25rem 0.75rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  cursor: pointer;
  font-size: 0.8rem;
}

.chip input {
  width: auto;
  margin: 0;
}

.chip input:checked + span {
  color: var(--accent);
  font-weight: 600;
}

.results-card {
  position: sticky;
  top: 92px;
}

.results-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin: 0.7rem 0;
}

.macro-box {
  margin-top: 0.8rem;
  padding: 0.7rem 0.8rem;
  border-radius: 0.9rem;
  background: var(--accent-soft);
  font-size: 0.85rem;
}

.share-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  align-items: center;
  font-size: 0.8rem;
  margin-top: 0.6rem;
}

.share-row a {
  text-decoration: none;
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  color: var(--muted);
}

.share-row a:hover {
  color: var(--accent);
  border-color: var(--accent);
}

.form-disclaimer {
  margin-top: 0.6rem;
  font-size: 0.8rem;
  color: var(--muted);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 1rem;
}

.bullet-list {
  padding-left: 1rem;
  margin: 0.2rem 0 0;
  color: var(--muted);
}

.bullet-list li {
  margin-bottom: 0.4rem;
}

.site-footer {
  border-top: 1px solid var(--border);
  padding: 1.6rem 1.2rem 2rem;
  background: color-mix(in srgb, var(--bg) 96%, transparent);
}

.footer-top {
  display: grid;
  grid-template-columns: minmax(0, 2fr) repeat(2, minmax(0, 1.3fr));
  gap: 1.4rem;
  margin-bottom: 1rem;
}

.footer-top h3,
.footer-top h4 {
  margin-top: 0;
  margin-bottom: 0.4rem;
}

.footer-top p {
  margin-top: 0;
  color: var(--muted);
}

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

.footer-top li {
  margin-bottom: 0.3rem;
}

.footer-top a {
  text-decoration: none;
  color: var(--muted);
  font-size: 0.85rem;
}

.footer-top a:hover {
  color: var(--accent);
}

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 0.7rem;
  font-size: 0.8rem;
  color: var(--muted);
  text-align: center;
}

.hidden {
  display: none !important;
}

/* Ad containers: clearly visible placeholders, but clean */
.ad-container {
  margin: 0.75rem 0 1rem;
  display: flex;
  justify-content: center;
}

.ad-slot {
  width: 100%;
  max-width: 970px;
  min-height: 90px;
  border-radius: 0.9rem;
  border: 1px dashed var(--border);
  background: color-mix(in srgb, var(--bg-elevated) 90%, transparent);
}

/* Smaller in-article ads */
.ad-article .ad-slot {
  max-width: 100%;
  min-height: 70px;
}

/* Footer and hero ads share same base style, no extra decoration */

/* Modal */
.modal {
  position: fixed;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  background: rgba(15, 23, 42, 0.5);
  z-index: 50;
}

.modal.show {
  display: flex;
}

.modal-dialog {
  background: var(--bg-elevated);
  border-radius: 1.4rem;
  padding: 1.4rem 1.5rem;
  max-width: 420px;
  width: 100%;
  box-shadow: var(--shadow-soft);
  border: 1px solid var(--border);
  position: relative;
}

.modal-close {
  position: absolute;
  top: 0.6rem;
  right: 0.7rem;
  border: none;
  background: transparent;
  font-size: 1.2rem;
  cursor: pointer;
  color: var(--muted);
}

.modal-note {
  font-size: 0.85rem;
  color: var(--muted);
  margin-top: 0;
}

.modal-disclaimer {
  font-size: 0.75rem;
  color: var(--muted);
}

.tabs {
  display: flex;
  gap: 0.4rem;
  margin-bottom: 0.7rem;
}

.tab-btn {
  flex: 1;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--bg);
  padding: 0.3rem 0.5rem;
  font-size: 0.85rem;
  cursor: pointer;
}

.tab-btn.active {
  background: var(--accent-soft);
  border-color: var(--accent);
  color: var(--accent);
}

.tab-panel {
  display: none;
}

.tab-panel.active {
  display: block;
}

.full-width {
  width: 100%;
}

@media (max-width: 840px) {
  .hero {
    grid-template-columns: minmax(0, 1fr);
  }
  .results-card {
    position: static;
  }
}

@media (max-width: 720px) {
  .site-main {
    padding-inline: 0.9rem;
  }
  .site-header {
    flex-wrap: wrap;
    justify-content: space-between;
  }
  .main-nav {
    order: 3;
    width: 100%;
    justify-content: flex-start;
    overflow-x: auto;
  }
  .footer-top {
    grid-template-columns: minmax(0, 1fr);
  }
}