:root {
  --body-padding: 2rem;
  --font-family: "Noto Serif", ui-serif;
  --font-weight-normal: 400;
  --background-color: #f7f7f7;
  --body-text-color: #2d2d2d;
  --header-accent-color: #f26522;
  --header-accent-color-secondary: #fb7c41;
  --input-border-color: #ccc;
  --url-background-color: #ebebeb;
  --white: white;
}

@media (max-width: 640px) {
  :root {
    --body-padding: 1rem;
  }
}

/* ==============================
   Primary elements
   ============================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  margin: 3rem auto 6rem auto;
  padding: 0 var(--body-padding);
  color: var(--body-text-color);
  font-family: var(--font-family);
  font-weight: var(--font-weight-normal);
  font-style: normal;
  background-color: var(--background-color);
}

header,
main {
  max-width: 48em;
  margin: 0 auto;
}

h1 {
  letter-spacing: -1px;
}

h1 .accent {
  color: var(--header-accent-color);
  background: linear-gradient(
    315deg,
    var(--header-accent-color),
    var(--header-accent-color-secondary)
  );
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

a {
  color: var(--header-accent-color);
  text-decoration: none;
  transition: color 0.2s;

  &:hover {
    color: var(--header-accent-color-secondary);
  }
}

/* ==============================
   Form
   ============================== */
form {
  margin-top: 1.25rem;
}

form .bar {
  display: flex;
  gap: 0.5rem;
}

input[type="text"],
button {
  font-family: var(--font-family);
  font-size: 1.15em;
  padding: 0.5rem 1.25rem;
  border-radius: 2em;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
}

input[type="text"] {
  flex-grow: 1;
  border: 1px solid var(--input-border-color);
}

button {
  padding: 0.5rem 1rem;
  border: none;
  cursor: pointer;
  white-space: nowrap;
  background-color: var(--header-accent-color);
  color: var(--white);
  transition: background-color 0.2s;

  &:hover {
    background-color: var(--header-accent-color-secondary);
  }
}

form .labels {
  display: flex;
  gap: 1.5rem;
  margin: 1rem 0 0 1.5rem;
  font-size: 1.15em;
}

form .labels label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
}

/* ==============================
   Toggle switch
   ============================== */
.toggle {
  position: relative;
  display: inline-block;
  width: 2.4em;
  height: 1.4em;
  flex-shrink: 0;
}

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

.toggle .slider {
  position: absolute;
  inset: 0;
  background-color: var(--input-border-color);
  border-radius: 1em;
  transition: background-color 0.2s;
  cursor: pointer;
}

.toggle .slider::after {
  content: "";
  position: absolute;
  left: 0.2em;
  top: 0.2em;
  width: 1em;
  height: 1em;
  background-color: var(--white);
  border-radius: 50%;
  transition: transform 0.2s;
}

.toggle input:checked + .slider {
  background-color: var(--header-accent-color);
}

.toggle input:checked + .slider::after {
  transform: translateX(1em);
}

@media (max-width: 640px) {
  input[type="text"],
  button,
  form .labels {
    font-size: 1em;
  }

  form .bar input[type="text"],
  form .bar button {
    padding-left: 0.85rem;
    padding-right: 0.85rem;
  }

  form .labels {
    margin-left: 0;
    gap: 1rem;
  }
}

/* ==============================
   Feed URLs
   ============================== */
#result,
#error {
  margin-top: 2.5rem;
}

#error {
  text-align: center;
}

.feed {
  margin-bottom: 1.5rem;
}

.url {
  font-family: ui-monospace, monospace;
  font-size: 0.9em;
  background-color: var(--url-background-color);
  border-radius: 0.5rem;
  padding: 0.75rem 1rem;
  margin-top: 0.25rem;
  word-break: break-all;
}

.feed-actions {
  display: flex;
  justify-content: flex-end;
  gap: 0.5rem;
  margin-top: 0.5rem;
}

button.small {
  font-size: 0.85em;
  padding: 0.25rem 0.75rem;
  border-radius: 0.4rem;
  background-color: #888;

  &:hover {
    background-color: #999;
  }
}

/* ==============================
   Promo
   ============================== */
.promo {
  margin: 4rem auto 0 auto;
  padding-top: 4rem;
  max-width: 64rem;
  border-top: 1px solid color-mix(in srgb, var(--background-color), black 10%);
}

.promo .showcase {
  display: flex;
  justify-content: center;
  gap: 2rem;

  img {
    width: 100%;
  }
}

.promo .showcase-secondary {
  margin-top: 2rem;

  img {
    max-width: 50rem;
  }
}

.promo .copy {
  max-width: 50rem;
  margin: 2rem auto 0 auto;
  font-size: 1.5em;
  text-align: center;
}

@media (max-width: 640px) {
  .hide-narrow {
    display: none;
  }

  .promo .showcase img {
    max-width: 12rem;
  }

  .promo .showcase-secondary img {
    max-width: 20rem;
  }

  .promo .copy {
    font-size: 1em;
  }
}