/* Swefad shell — obsidian, electric cyan, cobalt, ultraviolet */

:root {
  --sf-bg: #0a0c10;
  --sf-border: rgba(34, 211, 238, 0.1);
  --sf-text: #e8ecf4;
  --sf-text-secondary: rgba(232, 236, 244, 0.72);
  --sf-text-tertiary: rgba(232, 236, 244, 0.45);
  --sf-accent: #22d3ee;
  --sf-accent-mist: #a78bfa;
  --sf-accent-deep: #1e3a8a;
  --font-sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --sf-container: min(96rem, calc(100vw - 2rem));
  --sf-easing: cubic-bezier(0.22, 1, 0.36, 1);
  color-scheme: dark;
}

html[data-theme="light"] {
  --sf-bg: #f0f4f8;
  --sf-border: rgba(10, 12, 16, 0.1);
  --sf-text: #0a0c10;
  --sf-text-secondary: rgba(10, 12, 16, 0.72);
  --sf-text-tertiary: rgba(10, 12, 16, 0.5);
  --sf-accent: #0891b2;
  --sf-accent-mist: #7c3aed;
  color-scheme: light;
}

html, body.sf-site {
  transition: background-color 0.35s var(--sf-easing), color 0.35s var(--sf-easing);
}

body.sf-site {
  font-family: var(--font-sans) !important;
  letter-spacing: -0.011em;
  line-height: 1.5;
  background-color: var(--sf-bg) !important;
  color: var(--sf-text) !important;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  z-index: 200;
  background: var(--sf-accent);
  color: #0a0c10;
  padding: 0.5rem 1rem;
  font-weight: 600;
  font-size: 0.875rem;
}
.skip-link:focus { left: 1rem; top: 1rem; }

.sf-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 60;
  border-bottom: 1px solid transparent;
  transition: background 0.4s var(--sf-easing), border-color 0.4s var(--sf-easing);
}
.sf-header.is-scrolled {
  background: color-mix(in srgb, var(--sf-bg) 88%, transparent);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom-color: var(--sf-border);
}
.sf-header__inner {
  max-width: var(--sf-container);
  margin-inline: auto;
  padding-inline: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4rem;
}
@media (min-width: 640px) { .sf-header__inner { height: 5rem; } }

.sf-brand {
  font-weight: 600;
  font-size: 1.2rem;
  letter-spacing: -0.03em;
  color: var(--sf-text);
  text-decoration: none;
}
.sf-brand:hover { color: var(--sf-accent); }

.sf-nav-desktop {
  display: none;
  gap: 1.75rem;
  align-items: center;
}
@media (min-width: 768px) { .sf-nav-desktop { display: flex; } }
.sf-nav-desktop a {
  font-size: 0.875rem;
  color: var(--sf-text-secondary);
  text-decoration: none;
  transition: color 0.2s;
}
.sf-nav-desktop a:hover,
.sf-nav-desktop a.is-active { color: var(--sf-text); }

.sf-header__actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.sf-theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  border: 1px solid var(--sf-border);
  border-radius: 9999px;
  background: transparent;
  color: var(--sf-text-secondary);
  cursor: pointer;
}
.sf-theme-toggle svg { width: 1.1rem; height: 1.1rem; }
html[data-theme="light"] .sf-icon-moon { display: none; }
html:not([data-theme="light"]) .sf-icon-sun { display: none; }

.sf-btn-mini {
  display: none;
  font-size: 0.8125rem;
  padding: 0.5rem 1rem;
  border-radius: 9999px;
  background: var(--sf-accent);
  color: #0a0c10;
  font-weight: 500;
  text-decoration: none;
}
@media (min-width: 640px) { .sf-btn-mini { display: inline-flex; } }

.sf-menu-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  border: 1px solid var(--sf-border);
  border-radius: 0.5rem;
  background: transparent;
  color: var(--sf-text);
  cursor: pointer;
}
.sf-menu-toggle svg { width: 1.25rem; height: 1.25rem; }
@media (min-width: 768px) { .sf-menu-toggle { display: none; } }

.sf-mobile-nav {
  display: none;
  position: fixed;
  inset: 4rem 0 0 0;
  background: color-mix(in srgb, var(--sf-bg) 96%, transparent);
  backdrop-filter: blur(12px);
  overflow-y: auto;
  z-index: 55;
  border-top: 1px solid var(--sf-border);
}
.sf-mobile-nav.is-open { display: block; }
@media (min-width: 768px) { .sf-mobile-nav { display: none !important; } }
.sf-mobile-nav__inner {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.sf-mobile-nav__inner a {
  font-size: 1rem;
  color: var(--sf-text);
  text-decoration: none;
}
.sf-mobile-nav__label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--sf-text-tertiary);
  margin-top: 1rem;
}

.sf-footer {
  margin-top: 4rem;
  padding: 3rem 1.5rem 2rem;
  border-top: 1px solid var(--sf-border);
}
.sf-footer__inner {
  max-width: var(--sf-container);
  margin-inline: auto;
  display: grid;
  gap: 2.5rem;
}
@media (min-width: 768px) {
  .sf-footer__inner { grid-template-columns: 1fr 2fr; }
}
.sf-footer__brand {
  font-weight: 600;
  font-size: 1.25rem;
  color: var(--sf-text);
  text-decoration: none;
}
.sf-footer__desc {
  font-size: 0.875rem;
  color: var(--sf-text-secondary);
  margin-top: 0.75rem;
  max-width: 22rem;
  line-height: 1.6;
}
.sf-footer__cols {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}
@media (min-width: 640px) { .sf-footer__cols { grid-template-columns: repeat(3, 1fr); } }
.sf-footer__cols h3 {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--sf-text-tertiary);
  margin: 0 0 0.75rem;
}
.sf-footer__cols ul { list-style: none; padding: 0; margin: 0; }
.sf-footer__cols li { margin-bottom: 0.4rem; }
.sf-footer__cols a {
  font-size: 0.8125rem;
  color: var(--sf-text-secondary);
  text-decoration: none;
}
.sf-footer__cols a:hover { color: var(--sf-accent); }
.sf-footer__base {
  max-width: var(--sf-container);
  margin: 2rem auto 0;
  padding-top: 1.5rem;
  border-top: 1px solid var(--sf-border);
  font-size: 0.8125rem;
  color: var(--sf-text-tertiary);
  text-align: center;
}
.sf-footer__base a { color: var(--sf-text-secondary); }

.sf-cookie {
  position: fixed;
  bottom: 1rem;
  left: 1rem;
  right: 1rem;
  max-width: 28rem;
  margin-inline: auto;
  padding: 1rem 1.25rem;
  background: color-mix(in srgb, var(--sf-bg) 94%, transparent);
  border: 1px solid var(--sf-border);
  border-radius: 0.75rem;
  box-shadow: 0 8px 32px rgba(0,0,0,0.35), 0 0 24px rgba(34,211,238,0.08);
  z-index: 80;
}
.sf-cookie__text { font-size: 0.8125rem; color: var(--sf-text-secondary); margin: 0 0 0.75rem; }
.sf-cookie__actions { display: flex; gap: 0.5rem; }
.sf-cookie__btn {
  padding: 0.5rem 1rem;
  border-radius: 9999px;
  font-size: 0.8125rem;
  border: none;
  cursor: pointer;
  background: var(--sf-accent);
  color: #0a0c10;
  font-weight: 500;
}
.sf-cookie__btn--ghost {
  background: transparent;
  border: 1px solid var(--sf-border);
  color: var(--sf-text);
}

.sf-accent { color: var(--sf-accent); }