/* ===== Header ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  min-height: var(--header-height);
  background: var(--clr-bg);
  border-bottom: 1px solid var(--clr-border);
  z-index: 100;
}

.site-header__inner {
  width: min(100%, var(--content-max-width));
  margin: 0 auto;
  height: 100%;
  padding: 0 var(--header-pad-x);
  display: flex;
  justify-content: flex-start;
  align-items: center;
  gap: var(--space-6);
}

.nav {
  display: flex;
  gap: var(--space-16);
  align-items: center;
}

.nav--desktop {
  margin-left: var(--space-10);
}

.header-separator {
  width: 3px;
  height: 40px;
  background: var(--clr-primary);
  border-radius: 999px;
  margin-left: var(--space-10);
  flex-shrink: 0;
}

.site-header__inner > .theme-toggle {
  margin-left: auto;
}

.mobile-menu .theme-toggle {
  width: 100%;
  border-top: 1px solid var(--clr-border);
  border-radius: 0;
  border-left: none;
  border-right: none;
  border-bottom: none;
  padding-left: 0;
  padding-right: 0;
}

.menu-toggle {
  display: none;
  margin-left: auto;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid transparent;
  background: transparent;
  color: inherit;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: border-color 0.2s ease, background 0.2s ease;
}

.menu-toggle:focus-visible {
  outline: 2px solid var(--clr-primary);
  outline-offset: 3px;
}

.menu-toggle:hover {
  border-color: var(--clr-border);
  background: rgba(0, 0, 0, 0.03);
}

.menu-toggle__bars {
  position: relative;
  width: 24px;
  height: 16px;
  display: block;
}

.menu-toggle__bars span {
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--clr-text);
  border-radius: 1px;
  transition: transform var(--transition-speed) ease, opacity var(--transition-speed) ease;
}

.menu-toggle__bars span:nth-child(1) {
  top: 0;
}

.menu-toggle__bars span:nth-child(2) {
  top: 7px;
}

.menu-toggle__bars span:nth-child(3) {
  bottom: 0;
}

.site-header[data-menu-open="true"] .menu-toggle__bars span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.site-header[data-menu-open="true"] .menu-toggle__bars span:nth-child(2) {
  opacity: 0;
}

.site-header[data-menu-open="true"] .menu-toggle__bars span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.mobile-menu {
  display: none;
}

.nav a {
  display: inline-flex;
  align-items: center;
  height: 100%;
  text-decoration: none;
  color: var(--clr-text);
  font-family: "Inter", sans-serif;
  font-size: 18px;
  font-weight: 500;
  position: relative;
  padding: 0 0.25rem;
  transition: color 0.2s ease;
}

.nav a:hover {
  color: var(--clr-text);
}

.nav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -29px;
  height: 3px;
  background: transparent;
  transition: background 0.2s ease;
}

.nav a:hover::after {
  background: var(--clr-primary);
}


/* ===== Logo & Animation ===== */
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--clr-text);
  text-decoration: none;
  font-family: "Stack Sans Notch", sans-serif;
}

.logo-text {
  font-size: 24px;
  font-weight: 700;
  position: relative;
  z-index: 1;
  background: var(--clr-bg);
}

.triangles {
  display: flex;
  gap: 6px;
  position: relative;
  z-index: 0;
  transition: transform var(--transition-speed) ease;
}

.triangle-wrapper {
  display: flex;
  justify-content: center;
  align-items: center;
  transition: transform var(--transition-speed) ease;
}

.triangle {
  width: 0;
  height: 0;
  border-left: 10px solid transparent;
  border-right: 10px solid transparent;
  border-bottom: 18px solid currentColor;
  color: var(--clr-primary);
  transition: transform var(--transition-speed) ease;
}

/* Hover-in : rotation d'abord, puis empilement */
.logo:hover .w1 .triangle {
  transform: rotate(-90deg);
  transition-delay: 0s;
}

.logo:hover .w2 .triangle {
  transform: rotate(-90deg);
  transition-delay: 0.05s;
}

.logo:hover .w3 .triangle {
  transform: rotate(-90deg);
  transition-delay: 0.1s;
}

.logo:hover .w2 {
  transform: translateX(-14px);
}

.logo:hover .w3 {
  transform: translateX(-27px);
}

.logo:hover .triangles {
  transform: translateX(-20px);
  transition-delay: 0.3s;
}

/* Hover-out : désempilement d'abord, puis rotation inverse */
.w1 .triangle {
  transition-delay: 0.3s;
}

.w2 .triangle {
  transition-delay: 0.35s;
}

.w3 .triangle {
  transition-delay: 0.4s;
}

.triangles {
  transition-delay: 0s;
}

/* ===== Theme Toggle ===== */
.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.65rem;
  padding: 0.6rem 0.85rem;
  height: 40px;
  width: 190px;
  flex-shrink: 0;
  border: 1px solid var(--clr-border);
  border-radius: 999px;
  background: var(--clr-bg);
  color: var(--clr-text);
  font-family: "Inter", sans-serif;
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  transition: border-color 0.2s ease, background 0.2s ease;
}

.theme-toggle:hover {
  border-color: var(--clr-border-hover);
  background: var(--clr-bg);
}

.theme-toggle:focus-visible {
  outline: 2px solid var(--clr-primary);
  outline-offset: 3px;
}

.theme-toggle__switch {
  position: relative;
  width: 36px;
  height: 20px;
  border-radius: 999px;
  background: var(--clr-secondary);
  display: inline-flex;
  align-items: center;
  padding: 3px;
  transition: background var(--transition-speed) ease;
  flex-shrink: 0;
}

.theme-toggle[aria-pressed="true"] .theme-toggle__switch {
  background: var(--clr-primary);
}

.theme-toggle__knob {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--clr-bg);
  transform: translateX(0);
  transition: transform var(--transition-speed) ease, background var(--transition-speed) ease;
}

.theme-toggle[aria-pressed="true"] .theme-toggle__knob {
  transform: translateX(16px);
}

/* ===== Footer ===== */
.site-footer {
  border-top: 1px solid var(--clr-border);
  background: var(--clr-bg);
  width: 100%;
}

[data-component="site-footer"] {
  margin-top: auto;
  display: flex;
  flex: 0 0 auto;
  width: 100%;
}

body.page--scrollable [data-component="site-footer"] {
  margin-top: 100px;
}

.site-footer__inner {
  width: min(100%, var(--content-max-width));
  margin: 0 auto;
  padding: var(--space-6) var(--header-pad-x);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  align-items: center;
  justify-content: space-between;
}

.site-footer__inner > :last-child {
  margin-left: auto;
}

.site-footer__credit {
  margin: 0;
  font-size: 0.95rem;
  color: var(--clr-secondary);
}

.site-footer__ds-link {
  font-size: 0.875rem;
  color: var(--clr-secondary);
  text-decoration: none;
  transition: color 0.2s ease;
  white-space: nowrap;
}

.site-footer__ds-link:hover {
  color: var(--clr-primary);
}

/* ===== Motion Preferences ===== */
@media (prefers-reduced-motion: reduce) {
  .triangle,
  .triangle-wrapper,
  .triangles,
  .theme-toggle__switch,
  .theme-toggle__knob {
    transition: none !important;
    transform: none !important;
  }
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .site-header {
    flex-direction: row;
    align-items: center;
    gap: 0.75rem;
  }

  .header-separator,
  .nav--desktop,
  .site-header__inner > .theme-toggle {
    display: none;
  }

  .menu-toggle {
    display: inline-flex;
  }

  .mobile-menu {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    height: calc(100vh - var(--header-height));
    padding: var(--space-8) var(--header-pad-x);
    background: var(--clr-bg);
    gap: var(--space-6);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-6px);
    transition: opacity var(--transition-speed) ease, transform var(--transition-speed) ease;
    border-top: 1px solid var(--clr-border);
    z-index: 90;
    overflow-y: auto;
  }

  .site-header[data-menu-open="true"] .mobile-menu {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

  .nav--mobile {
    display: flex;
    flex-direction: column;
    gap: var(--space-10);
    flex: 1;
    justify-content: flex-start;
  }

  .nav--mobile a {
    height: auto;
    width: 100%;
    font-size: 1.25rem;
    position: relative;
    padding-bottom: 0.5rem;
    justify-content: center;
  }

  .nav--mobile a:not(:last-child)::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -1.25rem;
    width: 100%;
    height: 2px;
    background: var(--clr-border);
  }


  .triangle,
  .triangle-wrapper,
  .logo:hover .triangle,
  .logo:hover .triangle-wrapper {
    transition: none !important;
    transform: none !important;
  }

  .site-footer__inner {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (min-width: 769px) and (max-width: 1024px) {
  .nav {
    gap: var(--space-8);
  }

  .nav--desktop {
    margin-left: var(--space-6);
  }

  .header-separator {
    margin-left: var(--space-6);
  }
}