/* ============================================================
   CalcVerse Global Styles
   ============================================================ */

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

.main-content {
  flex: 1;
  width: 100%;
  max-width: var(--content-width);
  margin: 0 auto;
  padding: var(--space-6) var(--space-4);
}

@media (min-width: 768px) {
  .main-content { padding: var(--space-8) var(--space-6); }
}

@media (min-width: 1280px) {
  .main-content { padding: var(--space-16) var(--space-6); }
}

/* ── Navigation ── */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--nav-height);
  background: var(--color-white);
  border-bottom: 1px solid var(--color-gray-200);
}

.site-nav__inner {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--space-4);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-nav__logo {
  font-weight: 700;
  font-size: 20px;
  color: var(--color-purple-700);
  text-decoration: none;
}
.site-nav__logo:hover { text-decoration: none; }

.site-nav__links {
  display: none;
  align-items: center;
  gap: var(--space-6);
}

.site-nav__links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-gray-700);
  text-decoration: none;
  transition: color var(--transition-base);
}

.site-nav__links a:hover { color: var(--color-purple-700); text-decoration: none; }
.site-nav__links a.active { color: var(--color-purple-700); font-weight: 600; }

@media (min-width: 768px) {
  .site-nav__links { display: flex; }
  .site-nav__hamburger { display: none; }
}

.site-nav__hamburger {
  padding: var(--space-2);
  min-width: 44px;
  min-height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-gray-700);
}

/* ── Breadcrumb ── */
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-2);
  font-size: 13px;
  color: var(--color-gray-500);
  margin-bottom: var(--space-4);
}

.breadcrumb a { color: var(--color-gray-500); text-decoration: none; }
.breadcrumb a:hover { color: var(--color-purple-700); text-decoration: none; }
.breadcrumb__separator { color: var(--color-gray-400); user-select: none; }
.breadcrumb__current { font-weight: 600; color: var(--color-gray-700); }

/* ── Page header ── */
.page-header { margin-bottom: var(--space-8); }

.page-header h1 {
  font-size: clamp(28px, 5vw, 36px);
  font-weight: 800;
  color: var(--color-purple-950);
  margin-bottom: var(--space-3);
}

.page-header__tagline {
  font-size: 16px;
  color: var(--color-gray-500);
  margin-bottom: var(--space-4);
  line-height: 1.6;
}

/* ── Trust pills ── */
.trust-pills {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.trust-pill {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-purple-600);
  background: var(--color-purple-50);
  border-radius: var(--radius-pill);
  padding: 4px 12px;
  min-height: 24px;
  display: inline-flex;
  align-items: center;
}

/* ── Cards ── */
.card {
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
}

@media (min-width: 768px) { .card { padding: var(--space-6); } }

/* ── Buttons ── */
.btn-primary {
  background: var(--color-purple-700);
  color: var(--color-white);
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 700;
  padding: 0 var(--space-6);
  height: 48px;
  min-width: 120px;
  transition: background var(--transition-base);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  white-space: nowrap;
}

.btn-primary:hover { background: var(--color-purple-800); text-decoration: none; }
.btn-primary:active { background: var(--color-purple-900); transform: scale(0.98); }
.btn-primary:focus-visible { box-shadow: var(--shadow-focus); outline: none; }
.btn-primary:disabled { background: var(--color-purple-400); cursor: not-allowed; color: var(--color-purple-100); }

@media (max-width: 479px) { .btn-primary { width: 100%; height: 52px; } }

.btn-secondary {
  background: var(--color-purple-100);
  color: var(--color-purple-800);
  border: 1px solid var(--color-purple-200);
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 700;
  padding: 0 var(--space-6);
  height: 48px;
  min-width: 120px;
  transition: background var(--transition-base);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.btn-secondary:hover { background: var(--color-purple-200); text-decoration: none; }

/* ── Footer ── */
.site-footer {
  background: var(--color-white);
  border-top: 1px solid var(--color-gray-200);
  padding: var(--space-8) var(--space-4);
  text-align: center;
}

.site-footer p { font-size: 13px; color: var(--color-gray-400); line-height: 2; }
.site-footer a { color: var(--color-gray-500); text-decoration: none; }
.site-footer a:hover { color: var(--color-purple-700); }

/* ── AdSense slot ── */
.adsense-slot {
  width: 100%;
  min-height: 90px;
  background: var(--color-white);
  border: 1px dashed var(--color-gray-300);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  color: var(--color-gray-400);
  margin: var(--space-8) 0;
  padding: var(--space-2);
}

/* ── Related calculators grid ── */
.related-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}

@media (min-width: 480px) { .related-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 768px) { .related-grid { grid-template-columns: repeat(3, 1fr); } }

.related-card {
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  text-decoration: none;
  display: block;
  transition: background var(--transition-base);
}

.related-card:hover { background: var(--color-purple-50); text-decoration: none; }
.related-card__name { font-size: 14px; font-weight: 600; color: var(--color-gray-900); margin-bottom: var(--space-1); }
.related-card__desc { font-size: 12px; color: var(--color-gray-500); line-height: 1.5; }

/* ── SEO content ── */
.seo-content { margin-top: var(--space-12); }

.seo-content h2 {
  font-size: 24px;
  font-weight: 700;
  color: var(--color-purple-900);
  margin-top: var(--space-10);
  margin-bottom: var(--space-4);
}

.seo-content h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--color-gray-900);
  margin-top: var(--space-6);
  margin-bottom: var(--space-3);
}

.seo-content p {
  font-size: 16px;
  color: var(--color-gray-500);
  line-height: 1.7;
  margin-bottom: var(--space-4);
}

.seo-content table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--space-4) 0;
  font-size: 14px;
}

.seo-content th {
  background: var(--color-gray-100);
  font-weight: 600;
  color: var(--color-gray-700);
  padding: var(--space-3) var(--space-4);
  text-align: left;
  border-bottom: 2px solid var(--color-gray-200);
}

.seo-content td {
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--color-gray-200);
  color: var(--color-gray-700);
}

.last-updated {
  font-size: 13px;
  color: var(--color-gray-400);
  margin-top: var(--space-8);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-gray-200);
}

.disclaimer {
  font-size: 13px;
  color: var(--color-gray-500);
  background: var(--color-gray-100);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  margin-top: var(--space-6);
  line-height: 1.6;
}