:root {
  color-scheme: light dark;
  font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background-color: #111;
  color: #f5f5f5;
}

body {
  margin: 0;
  min-height: 100vh;
  background: linear-gradient(160deg, #121212 0%, #0b331e 50%, #121212 100%);
}

.top-nav {
  background: rgba(0, 0, 0, 0.45);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.top-nav__inner {
  max-width: 960px;
  margin: 0 auto;
  padding: 0.75rem 1.5rem;
  display: flex;
  align-items: center;
}

.top-nav__link {
  color: rgba(255, 255, 255, 0.75);
  text-decoration: none;
  font-weight: 600;
  transition: color 0.2s ease;
}

.top-nav__link:hover,
.top-nav__link:focus {
  color: #ffffff;
}

main.app {
  max-width: 960px;
  margin: 0 auto;
  padding: 3rem 1.5rem 4rem;
}

.app__hero-heading {
  margin: 0 0 0.75rem;
  font-size: clamp(2.45rem, 3.4vw, 2.9rem);
  display: inline-flex;
  align-items: baseline;
  gap: 0.6rem;
}

.app__hero-version {
  font-size: 0.85rem;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.6);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.app__hero > p {
  margin: 0 0 2rem;
  color: rgba(255, 255, 255, 0.7);
}

.search-form {
  background-color: rgba(0, 0, 0, 0.55);
  border-radius: 1.5rem;
  padding: 1.5rem;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.35);
}

.search-form__help {
  margin: 0 0 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.6);
}

.search-form__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 0.65rem;
  margin-bottom: 1rem;
}

.search-form__grid input {
  padding: 0.65rem 0.95rem;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background-color: rgba(0, 0, 0, 0.35);
  color: inherit;
  font-size: 0.95rem;
  outline: none;
  transition: border-color 0.2s ease, background-color 0.2s ease;
}

.search-form__grid input:focus {
  border-color: #1db954;
  background-color: rgba(0, 0, 0, 0.6);
}

.search-form__actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.search-form__actions .btn {
  flex: none;
}

.settings {
  position: relative;
}

.settings__toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-weight: 600;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  padding: 0.6rem 0.95rem;
  cursor: pointer;
  background-color: rgba(0, 0, 0, 0.2);
  color: inherit;
  transition: border-color 0.2s ease, background-color 0.2s ease;
}

.settings__toggle:hover,
.settings__toggle:focus {
  border-color: rgba(255, 255, 255, 0.45);
  background-color: rgba(0, 0, 0, 0.45);
}

.settings__chevron {
  display: inline-block;
  transition: transform 0.2s ease;
}

.settings__toggle[aria-expanded="true"] .settings__chevron {
  transform: rotate(180deg);
}

.settings__menu {
  position: absolute;
  top: calc(100% + 0.5rem);
  right: 0;
  min-width: 220px;
  padding: 0.85rem;
  border-radius: 1rem;
  background-color: rgba(0, 0, 0, 0.85);
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 20px 38px rgba(0, 0, 0, 0.4);
  z-index: 10;
}

.settings__option {
  display: flex;
  align-items: flex-start;
  gap: 0.55rem;
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.75);
  line-height: 1.4;
}

.settings__option input {
  margin-top: 0.2rem;
  accent-color: #1db954;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  font-weight: 600;
  border-radius: 999px;
  border: none;
  padding: 0.75rem 1.55rem;
  cursor: pointer;
  transition: transform 0.1s ease, filter 0.2s ease;
}

.btn--spotify {
  background: #1db954;
  color: #000;
}

.btn--spotify:hover {
  filter: brightness(1.08);
}

.btn--spotify:active {
  transform: translateY(1px);
}

.results {
  margin-top: 3rem;
}

.results__header {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.5rem 1rem;
}

.results__summary {
  margin: 0;
  color: rgba(255, 255, 255, 0.7);
}

.results__grid {
  margin-top: 1.5rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
}

.result {
  background-color: rgba(0, 0, 0, 0.45);
  border-radius: 1rem;
  padding: 1.1rem;
  border: 1px solid transparent;
  transition: border-color 0.2s ease;
}

.result:hover {
  border-color: rgba(29, 185, 84, 0.55);
}

.result__link {
  display: inline-block;
  font-weight: 600;
  font-size: 1.05rem;
  text-decoration: none;
  color: #1db954;
  margin-bottom: 0.5rem;
}

.result__snippet {
  margin: 0;
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.9rem;
}

.empty {
  margin-top: 3rem;
  text-align: center;
  color: rgba(255, 255, 255, 0.65);
}

.empty__secondary {
  margin: 0.5rem 0 0;
  font-size: 0.9rem;
}

@media (max-width: 600px) {
  main.app {
    padding: 2rem 1rem 3rem;
  }

  .app__hero h1 {
    font-size: 2.25rem;
  }
}