/* ── Shared styles for public site pages ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

/* ── Base tokens ── */
:root {
  --bg: #f9fafb;
  --card-bg: #ffffff;
  --text: #111827;
  --text-secondary: #6b7280;
  --text-muted: #9ca3af;
  --form-group-spacing: 1.5rem;
  --primary: #4f46e5;
  --primary-hover: #4338ca;
  --border: #e5e7eb;
  --input-border: #d1d5db;
  --header-bg: rgba(255,255,255,0.85);
}

html.dark {
  --bg: #111827;
  --card-bg: #1f2937;
  --text: #f3f4f6;
  --text-secondary: #d1d5db;
  --text-muted: #9ca3af;
  --primary: #818cf8;
  --primary-hover: #a5b4fc;
  --border: #374151;
  --input-border: #4b5563;
  --header-bg: rgba(17,24,39,0.85);
}

/* ── Body ── */
body {
  font-family: 'Figtree', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ── Header ── */
.header {
  position: sticky;
  top: 0;
  z-index: 50;
  padding: 0 1.5rem;
  background: var(--header-bg);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  max-width: 72rem;
  margin: 0 auto;
  height: 3.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo {
  font-size: 1.25rem;
  font-weight: 600;
  font-family: inherit;
  color: var(--text);
  text-decoration: none;
  letter-spacing: -0.01em;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.logo-icon { height: 22px; width: auto; flex-shrink: 0; }
.logo-dark { display: none; }
html.dark .logo-light { display: none; }
html.dark .logo-dark { display: block; }
.header-right { display: flex; align-items: center; gap: 1.5rem; }
.header-nav { display: flex; align-items: center; gap: 1.5rem; }
.header-actions { display: flex; align-items: center; gap: 0.5rem; }
.header-link {
  font-size: 1rem;
  font-weight: 450;
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.15s;
  padding: 0.5rem 0;
}
.header-link:hover { color: var(--text); }
.login-btn {
  font-size: 1rem;
  font-weight: 500;
  color: var(--text);
  text-decoration: none;
  padding: 0.375rem 0.875rem;
  border: 1px solid var(--input-border);
  border-radius: 0.375rem;
  transition: all 0.15s;
}
.login-btn:hover { border-color: var(--primary); color: var(--primary); }
.signup-btn {
  font-size: 1rem;
  font-weight: 600;
  color: #fff;
  text-decoration: none;
  padding: 0.375rem 0.875rem;
  background: var(--primary);
  border-radius: 0.375rem;
  transition: all 0.15s;
}
.signup-btn:hover { background: var(--primary-hover); }

/* ── Mobile header ── */
.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  padding: 0.75rem;
  color: var(--text-secondary);
  cursor: pointer;
  border-radius: 0.375rem;
  line-height: 0;
}
.mobile-menu-btn:hover { color: var(--text); }
.mobile-nav {
  display: none;
  position: absolute;
  top: 100%;
  right: 0;
  min-width: 12rem;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
  z-index: 60;
  padding: 0.25rem 0;
}
.mobile-nav.open { display: block; }
.mobile-nav-item {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  width: 100%;
  padding: 0.625rem 1rem;
  font-size: 1rem;
  color: var(--text-secondary);
  text-decoration: none;
  transition: background 0.15s;
}
.mobile-nav-item svg {
  width: 18px;
  height: 18px;
  color: var(--primary);
  flex-shrink: 0;
}
.mobile-nav-item:hover { background: rgba(0,0,0,0.04); }
html.dark .mobile-nav-item:hover { background: rgba(255,255,255,0.06); }
.mobile-nav-sep { height: 1px; background: var(--border); margin: 0.25rem 0; }
.mobile-nav-item.primary { color: var(--primary); font-weight: 600; }

@media (max-width: 640px) {
  .header { padding: 0 0.5rem; }
  .header-nav { display: none; }
  .mobile-menu-btn { display: block; }
  .header-actions { gap: 0.25rem; }
  .header-right { gap: 0.5rem; }
  .logo-text { display: none; }
  .login-btn {
    border: none;
    padding: 0.5rem;
    font-size: 0.875rem;
  }
  .login-btn:hover { border-color: transparent; }
  .signup-btn {
    padding: 0.5rem 0.625rem;
    font-size: 0.875rem;
  }
}
/* ── Mobile dropdown logo+type ── */
.mobile-nav-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.625rem 1rem;
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--text);
  text-decoration: none;
  opacity: 0.4;
}
.mobile-nav-logo img { height: 18px; width: auto; }
.mobile-nav-logo .logo-dark { display: none; }
html.dark .mobile-nav-logo .logo-light { display: none; }
html.dark .mobile-nav-logo .logo-dark { display: block; }

/* ── Footer ── */
.footer {
  border-top: 1px solid var(--border);
  padding: 1.25rem 1.5rem;
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  justify-content: center;
  position: relative;
  z-index: 1;
}
.footer a {
  font-size: 0.875rem;
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.15s;
}
.footer a:hover { color: var(--text-secondary); }
.footer-copy {
  width: 100%;
  text-align: center;
  font-size: 0.8125rem;
  color: var(--text-muted);
}

/* ── Theme toggle ── */
.theme-toggle { position: relative; }
.theme-toggle-btn {
  background: none;
  border: none;
  padding: 0.75rem;
  cursor: pointer;
  color: var(--text-muted);
  border-radius: 0.375rem;
  transition: color 0.15s;
  line-height: 0;
  display: flex;
  align-items: center;
}
.theme-toggle-btn:hover { color: var(--text); }
.theme-toggle-btn .ti { display: none; }
.theme-toggle[data-theme="light"] .ti-light { display: block; }
.theme-toggle[data-theme="dark"] .ti-dark { display: block; }
.theme-toggle[data-theme="system"] .ti-system { display: block; }
.theme-menu {
  display: none;
  position: absolute;
  top: calc(100% + 1.25rem);
  right: 0;
  min-width: 8rem;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
  z-index: 60;
  padding: 0.25rem 0;
}
.theme-toggle.open .theme-menu { display: block; }
.theme-option {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  width: 100%;
  padding: 0.4375rem 0.75rem;
  font-size: 1rem;
  color: var(--text-secondary);
  background: none;
  border: none;
  cursor: pointer;
  font-family: inherit;
  transition: background 0.15s, color 0.15s;
}
.theme-option:hover { background: rgba(0,0,0,0.04); color: var(--text); }
html.dark .theme-option:hover { background: rgba(255,255,255,0.06); }
.theme-option.active { color: var(--primary); font-weight: 500; }

/* ── Reduced motion ── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}