/* bio- prefix for Biomechanics Journal World (Anti-Ban Safe) */
:root {
  --bio-bg-page: #f8fafc;
  --bio-text-main: #334155;
  --bio-text-muted: #64748b;
  --bio-border-divider: #e2e8f0;
  --bio-brand-primary: #0f172a;
  --bio-brand-hover: #1e293b;
  --bio-surface-card: #ffffff;
  --bio-surface-sub: #f1f5f9;
  --bio-font-serif: "Merriweather", "Georgia", serif;
  --bio-font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Open Sans", "Helvetica Neue", sans-serif;
}

body {
  margin: 0;
  padding: 0;
  font-family: var(--bio-font-sans);
  background-color: var(--bio-bg-page);
  color: var(--bio-text-main);
  line-height: 1.7;
}

h1, h2, h3, h4, h5 {
  font-family: var(--bio-font-serif);
  color: #000;
  margin-top: 0;
}

a {
  color: var(--bio-brand-primary);
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
  color: var(--bio-text-muted);
}

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

.bio-top-navigation {
  background-color: var(--bio-surface-card);
  border-bottom: 1px solid var(--bio-border-divider);
  padding: 1.2rem 0;
}

.bio-nav-container {
  max-width: 1000px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 2rem;
}

.bio-logo-block {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--bio-font-serif);
  font-size: 1.4rem;
  font-weight: bold;
  color: #000;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.bio-logo-block svg {
  width: 28px;
  height: 28px;
}

.bio-menu-links {
  display: flex;
  gap: 1.5rem;
}

.bio-menu-item {
  font-weight: 600;
  color: var(--bio-text-main);
  font-size: 0.9rem;
  text-transform: uppercase;
}
.bio-menu-item:hover {
  color: var(--bio-text-muted);
}

.bio-main-workbench {
  flex: 1;
  max-width: 800px;
  margin: 4rem auto;
  padding: 0 2rem;
  width: 100%;
  box-sizing: border-box;
}

.bio-document-header {
  margin-bottom: 3rem;
  border-bottom: 3px solid #000;
  padding-bottom: 1rem;
}

.bio-document-title {
  font-size: 2.8rem;
  line-height: 1.1;
  margin-bottom: 1.5rem;
}

.bio-document-abstract {
  font-size: 1.15rem;
  color: var(--bio-text-muted);
  font-style: italic;
  font-family: var(--bio-font-serif);
}

.bio-research-section {
  margin-bottom: 3rem;
}

.bio-research-section p {
  margin-bottom: 1.5rem;
  font-size: 1.05rem;
}

.bio-data-matrix {
  width: 100%;
  border-collapse: collapse;
  margin: 2.5rem 0;
  font-size: 0.95rem;
}
.bio-data-matrix th, .bio-data-matrix td {
  padding: 1rem;
  border-bottom: 1px solid var(--bio-border-divider);
  text-align: left;
}
.bio-data-matrix th {
  background-color: var(--bio-surface-sub);
  font-weight: bold;
  color: #000;
}

.bio-subscription-ledger {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  margin-top: 2rem;
}
.bio-ledger-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 2rem;
  background: var(--bio-surface-card);
  border-left: 4px solid #000;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}
.bio-ledger-details h3 {
  margin: 0 0 0.5rem 0;
  font-size: 1.3rem;
}
.bio-ledger-price {
  font-size: 1.8rem;
  font-weight: bold;
  color: #000;
}
.bio-action-btn {
  display: inline-block;
  background: #000;
  color: #fff;
  padding: 0.75rem 2rem;
  font-weight: bold;
  text-transform: uppercase;
  border: none;
  cursor: pointer;
  font-size: 0.9rem;
  letter-spacing: 1px;
}
.bio-action-btn:hover {
  background: #333;
  text-decoration: none;
  color: #fff;
}

.bio-intake-form {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  max-width: 100%;
  background: var(--bio-surface-card);
  padding: 2rem;
  border: 1px solid var(--bio-border-divider);
}
.bio-field-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.bio-label {
  font-weight: 600;
  font-size: 0.9rem;
  text-transform: uppercase;
}
.bio-input {
  padding: 1rem;
  border: 1px solid var(--bio-border-divider);
  font-family: inherit;
  font-size: 1rem;
  background: var(--bio-surface-sub);
}

.bio-footer-dock {
  background-color: var(--bio-brand-primary);
  color: #fff;
  padding: 4rem 0 2rem 0;
  margin-top: auto;
}
.bio-footer-container {
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2rem;
  text-align: center;
}
.bio-footer-links {
  display: flex;
  gap: 2rem;
}
.bio-footer-links a {
  color: #94a3b8;
  font-size: 0.9rem;
}
.bio-footer-links a:hover {
  color: #fff;
}
.bio-copyright {
  font-size: 0.8rem;
  color: #64748b;
}

@media (max-width: 768px) {
  .bio-nav-container {
    flex-direction: column;
    gap: 1rem;
  }
  .bio-ledger-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 1.5rem;
  }
}