:root {
  /* Brand colors */
  --bs-primary: #283e8a;
  --bs-primary-rgb: 40, 62, 138;

  --bs-secondary: #b3b4b5;
  --bs-secondary-rgb: 179, 180, 181;

  /* Body */
  --bs-body-font-family: "Inter", system-ui, -apple-system,
    BlinkMacSystemFont, "Segoe UI", sans-serif;
  --bs-body-bg: #f6f7fb;
  --bs-body-color: #1f2937;

  /* Borders & UI */
  --bs-border-color: #e5e7eb;

  /* Custom theme variables */
  --bg-primary: #f6f7fb;
  --bg-secondary: #fff;
  --text-primary: #1f2937;
  --text-secondary: #6b7280;
  --border-color: #e5e7eb;
  --header-bg: #EFEFEF;
}

/* Dark mode variables */
[data-bs-theme="dark"] {
  --bs-body-bg: #111827;
  --bs-body-color: #f9fafb;
  --bs-border-color: #374151;

  --bg-primary: #111827;
  --bg-secondary: #1f2937;
  --text-primary: #f9fafb;
  --text-secondary: #9ca3af;
  --border-color: #374151;
  --header-bg: #1f2937;
}

body {
  background: var(--bg-primary);
  padding-top: 96px;
  color: var(--text-primary);
  transition: background-color 0.2s ease, color 0.2s ease;
}

.threadline-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1030;
  background: var(--header-bg);
  transition: background-color 0.2s ease;
}

.header-disclaimer {
  background: rgba(26, 26, 58, 0.06);
  border-bottom: 1px solid var(--border-color);
  padding: 0.35rem 1rem;
  transition: background-color 0.2s ease, border-color 0.2s ease;
}
[data-bs-theme="dark"] .header-disclaimer {
  background: rgba(26, 26, 58, 0.2);
}
.header-disclaimer .container {
  max-width: 1000px;
  margin: 0 auto;
}
.header-disclaimer__text {
  margin: 0;
  font-size: 0.8rem;
  color: var(--text-secondary);
  line-height: 1.4;
  text-align: center;
  transition: color 0.2s ease;
}
.header-disclaimer__text strong {
  color: var(--text-primary);
  font-weight: 600;
  transition: color 0.2s ease;
}

.threadline-header .navbar {
  background-color: var(--header-bg) !important;
}
.threadline-header .nav-link {
  color: var(--text-primary) !important;
  transition: color 0.2s ease;
}
.btn-signin {
  border: 1px solid var(--border-color);
  border-radius: 0.375rem;
  padding: 0.35rem 0.9rem !important;
  margin-right: 0.25rem;
  transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}
.btn-signin:hover {
  background-color: var(--bg-secondary) !important;
  border-color: var(--text-secondary) !important;
  color: var(--text-primary) !important;
}
.threadline-header .navbar-brand {
  color: var(--text-primary) !important;
  font-weight: 600;
  transition: color 0.2s ease;
}
.btn-join {
  background-color: #1A1A3A;
  color: #fff !important;
  border: none;
  padding: 0.4rem 1rem;
  border-radius: 0.375rem;
  font-weight: 500;
}
.btn-join:hover {
  background-color: #252550;
  color: #fff !important;
}

.card {
  border: 0;
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.06);
  background-color: var(--bg-secondary);
  transition: background-color 0.2s ease;
}
[data-bs-theme="dark"] .card {
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.3);
}
.avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  object-fit: cover;
}

/* Dark mode specific overrides */
[data-bs-theme="dark"] .threadline-header {
  background: var(--header-bg);
  border-bottom: 1px solid var(--border-color);
}

[data-bs-theme="dark"] .btn-signin {
  border-color: #4b5563;
}
[data-bs-theme="dark"] .btn-signin:hover {
  background-color: #374151 !important;
  border-color: #6b7280 !important;
  color: #f9fafb !important;
}

/* Alert dark mode styles */
[data-bs-theme="dark"] .alert-danger {
  background: #7f1d1d;
  border-color: #991b1b;
  color: #fecaca;
}
[data-bs-theme="dark"] .alert-success {
  background: #14532d;
  border-color: #166534;
  color: #bbf7d0;
}
[data-bs-theme="dark"] .alert-info {
  background: #1e3a5f;
  border-color: #1e40af;
  color: #bfdbfe;
}
[data-bs-theme="dark"] .alert-warning {
  background: #78350f;
  border-color: #92400e;
  color: #fde68a;
}

/* Dropdown dark mode styles */
[data-bs-theme="dark"] .dropdown-menu {
  background-color: var(--bg-secondary);
  border-color: var(--border-color);
}
[data-bs-theme="dark"] .dropdown-item {
  color: var(--text-primary);
}
[data-bs-theme="dark"] .dropdown-item:hover,
[data-bs-theme="dark"] .dropdown-item:focus {
  background-color: var(--bg-primary);
  color: var(--text-primary);
}
[data-bs-theme="dark"] .dropdown-divider {
  border-color: var(--border-color);
}

/* Navbar toggler dark mode */
[data-bs-theme="dark"] .navbar-toggler {
  border-color: var(--border-color);
}
[data-bs-theme="dark"] .navbar-toggler-icon {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%28249, 250, 251, 0.75%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

/* Form controls dark mode (Bootstrap handles most, but ensure consistency) */
[data-bs-theme="dark"] .form-control,
[data-bs-theme="dark"] .form-select {
  background-color: var(--bg-secondary);
  border-color: var(--border-color);
  color: var(--text-primary);
}
[data-bs-theme="dark"] .form-control:focus,
[data-bs-theme="dark"] .form-select:focus {
  background-color: var(--bg-secondary);
  border-color: #8B5CF6;
  color: var(--text-primary);
}
[data-bs-theme="dark"] .form-control::placeholder {
  color: var(--text-secondary);
}

/* Close button dark mode */
[data-bs-theme="dark"] .btn-close {
  filter: invert(1) grayscale(100%) brightness(200%);
}

/* Footer */
.home-footer {
  background: var(--bg-primary);
  padding: 2.5rem 1.5rem;
  border-top: 1px solid var(--border-color);
  transition: background-color 0.2s ease, border-color 0.2s ease;
}
.home-footer .container { 
  max-width: 1000px; 
  margin: 0 auto; 
  text-align: center; 
}
.home-footer__logo { 
  font-weight: 700; 
  font-size: 1.25rem; 
  color: var(--text-primary); 
  text-decoration: none; 
  display: inline-block; 
  margin-bottom: 1rem; 
  transition: color 0.2s ease; 
}
.home-footer__nav { 
  display: flex; 
  justify-content: center; 
  gap: 1.5rem; 
  flex-wrap: wrap; 
  margin-bottom: 1.5rem; 
}
.home-footer__nav a { 
  color: var(--text-secondary); 
  text-decoration: none; 
  transition: color 0.2s ease; 
}
.home-footer__nav a:hover { 
  color: var(--text-primary); 
  text-decoration: underline; 
}
.home-footer__bottom { 
  display: flex; 
  justify-content: space-between; 
  align-items: center; 
  flex-wrap: wrap; 
  gap: 1rem; 
  font-size: 0.9rem; 
  color: var(--text-secondary); 
  transition: color 0.2s ease; 
}
.home-footer__legal { 
  display: flex; 
  gap: 1rem; 
}
.home-footer__legal a { 
  color: var(--text-secondary); 
  text-decoration: none; 
  transition: color 0.2s ease; 
}
.home-footer__legal a:hover { 
  color: var(--text-primary); 
  text-decoration: underline; 
}

/* Cookie consent banner */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 1060;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 1rem 1.5rem;
  box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.08);
  transition: background-color 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}
[data-bs-theme="dark"] .cookie-banner {
  box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.3);
}
.cookie-banner--hidden {
  display: none;
}
.cookie-banner__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
  max-width: 1000px;
  margin: 0 auto;
}
.cookie-banner__text {
  margin: 0;
  font-size: 0.95rem;
  color: var(--text-primary);
  line-height: 1.5;
  flex: 1;
  min-width: 0;
  transition: color 0.2s ease;
}
.cookie-banner__text a {
  color: #3B82F6;
  text-decoration: none;
  transition: color 0.2s ease;
}
.cookie-banner__text a:hover {
  color: #2563eb;
  text-decoration: underline;
}
.cookie-banner__btn {
  flex-shrink: 0;
  padding: 0.5rem 1.25rem;
  background: #1A1A3A;
  color: #fff;
  border: none;
  border-radius: 0.5rem;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: background-color 0.2s ease, color 0.2s ease;
}
.cookie-banner__btn:hover {
  background: #2d2d5a;
  color: #fff;
}
@media (max-width: 576px) {
  .cookie-banner__inner {
    flex-direction: column;
    align-items: stretch;
    text-align: center;
  }
  .cookie-banner__btn {
    align-self: center;
  }
}