* {
  margin: 0;
  padding: 0;
}

html, body {
  height: 100%;
}

body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  font-family: 'Space Grotesk', sans-serif;
  background-color: var(--md-sys-color-surface);
  color: var(--md-sys-color-on-surface);
  transition: background-color 0.3s ease, color 0.3s ease;
}

.dynamic-island {
  position: fixed;
  top: 16px;
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--md-sys-color-primary);
  color: var(--md-sys-color-on-primary);
  border-radius: 32px;
  width: 180px;
  height: 40px;
  transition: width 0.5s cubic-bezier(0.25, 1.25, 0.5, 1),
              height 0.5s cubic-bezier(0.25, 1.25, 0.5, 1),
              border-radius 0.5s cubic-bezier(0.25, 1.25, 0.5, 1),
              background-color 0.3s ease,
              color 0.3s ease;
  overflow: hidden;
  cursor: pointer;
  z-index: 1000;
  -webkit-tap-highlight-color: transparent;
  outline: none;
}

.dynamic-island:focus,
.dynamic-island:active {
  outline: none;
  box-shadow: none;
}

.dynamic-island.expanded {
  width: 280px;
  height: 190px;
  border-radius: 24px;
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.25);
}

.dynamic-island .island-header {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 40px;
}

.dynamic-island .logo {
  font-family: 'Google Sans', sans-serif;
  font-size: 16px;
}

.dynamic-island .island-menu {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding-top: 12px;
}

.dynamic-island .island-menu a,
.dynamic-island .island-menu .theme-switch {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 14px;
  color: var(--md-sys-color-on-primary);
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 0.4s cubic-bezier(0.25, 1.25, 0.5, 1),
              transform 0.4s cubic-bezier(0.25, 1.25, 0.5, 1);
}

.dynamic-island .island-menu a {
  text-decoration: none;
}
.dynamic-island .island-menu a:hover {
  text-decoration: underline;
}

.dynamic-island.expanded .island-menu a,
.dynamic-island.expanded .island-menu .theme-switch {
  opacity: 1;
  transform: translateY(0);
}
.dynamic-island.expanded .island-menu a:nth-child(1) { transition-delay: 0.1s; }
.dynamic-island.expanded .island-menu a:nth-child(2) { transition-delay: 0.2s; }
.dynamic-island.expanded .island-menu a:nth-child(3) { transition-delay: 0.3s; }
.dynamic-island.expanded .island-menu .theme-switch:nth-child(4) { transition-delay: 0.4s; }

.dynamic-island:not(.expanded) .island-menu a:nth-child(1) { transition-delay: 0.4s; }
.dynamic-island:not(.expanded) .island-menu a:nth-child(2) { transition-delay: 0.3s; }
.dynamic-island:not(.expanded) .island-menu a:nth-child(3) { transition-delay: 0.2s; }
.dynamic-island:not(.expanded) .island-menu .theme-switch:nth-child(4) { transition-delay: 0.1s; }

.theme-switch {
  display: flex;
  align-items: center;
}

.switch {
  position: relative;
  display: inline-block;
  width: 48px;
  height: 24px;
}

.switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.slider {
  position: absolute;
  cursor: pointer;
  top: 0; left: 0; right: 0; bottom: 0;
  background-color: var(--md-sys-color-outline);
  transition: background-color 0.3s;
  border-radius: 24px;
}

.slider:before {
  position: absolute;
  font-family: "Material Icons";
  content: "light_mode";
  font-size: 16px;
  text-align: center;
  line-height: 20px;
  height: 20px; width: 20px;
  left: 2px; bottom: 2px;
  background-color: var(--md-sys-color-on-primary);
  color: var(--md-sys-color-on-surface-variant);
  border-radius: 50%;
  transition: transform 0.3s, background-color 0.3s, color 0.3s;
  display: flex;
  align-items: center;
  justify-content: center;
}

.switch input:checked + .slider {
  background-color: var(--md-sys-color-on-primary);
}
.switch input:checked + .slider:before {
  transform: translateX(24px);
  content: "dark_mode";
  color: var(--md-sys-color-on-surface);
}

.content {
  flex: 1;
  padding: 16px;
  margin-top: 70px;
}

footer {
  padding: 16px;
  background-color: var(--md-sys-color-primary);
  transition: background-color 0.3s ease, color 0.3s ease;
}

footer .copyright {
  text-align: center;
  color: var(--md-sys-color-on-primary);
  font-family: 'Space Grotesk', sans-serif;
}