:root {
  color-scheme: light;
  --background: #fff;
  --text: #171717;
  --muted: #666;
  --border: #c9c9c9;
  --soft-border: #e5e5e5;
  --surface: #f5f5f5;
  --button: #202020;
  --button-text: #fff;
  --success: #176b3a;
  --error: #a32929;
  --focus: #146ebe;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    color-scheme: dark;
    --background: #1e1e1e;
    --text: #f0f0f0;
    --muted: #aaa;
    --border: #626262;
    --soft-border: #3d3d3d;
    --surface: #292929;
    --button: #ededed;
    --button-text: #181818;
    --success: #71d99b;
    --error: #ff8e8e;
    --focus: #69b8ff;
  }
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --background: #1e1e1e;
  --text: #f0f0f0;
  --muted: #aaa;
  --border: #626262;
  --soft-border: #3d3d3d;
  --surface: #292929;
  --button: #ededed;
  --button-text: #181818;
  --success: #71d99b;
  --error: #ff8e8e;
  --focus: #69b8ff;
}

:root[data-theme="light"] { color-scheme: light; }

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--background);
  color: var(--text);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.5;
}

main {
  width: 100%;
  max-width: 680px;
  margin: 32px auto;
  padding: 0 20px;
}

header { margin-bottom: 32px; }
h1, h2, p { margin-top: 0; }
h1 { margin-bottom: 4px; font-size: 1.55rem; line-height: 1.25; }
h2 { margin-bottom: 4px; font-size: 1.1rem; }
h1 a { color: inherit; text-decoration: none; }
header p, .muted, .help { color: var(--muted); }
header p { margin-bottom: 0; }

label { display: block; margin-bottom: 8px; font-weight: 600; }
.input-row { display: flex; gap: 10px; }

input, button, select { font: inherit; font-size: 16px; }
input[type="url"] {
  min-width: 0;
  width: 100%;
  min-height: 44px;
  padding: 9px 11px;
  color: var(--text);
  background: var(--background);
  border: 1px solid var(--border);
  border-radius: 5px;
}

button {
  min-height: 44px;
  padding: 9px 15px;
  color: var(--button-text);
  background: var(--button);
  border: 1px solid var(--button);
  border-radius: 5px;
  cursor: pointer;
  white-space: nowrap;
}

button.secondary {
  min-height: 36px;
  padding: 6px 10px;
  color: var(--text);
  background: var(--background);
  border-color: var(--border);
}

button:disabled { cursor: wait; opacity: .62; }
input:focus-visible, button:focus-visible, select:focus-visible, summary:focus-visible, a:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--focus) 35%, transparent);
  outline-offset: 2px;
}

.help { margin: 7px 0 0; font-size: .875rem; }
.status { margin-top: 22px; padding: 11px 12px; background: var(--surface); border-left: 3px solid var(--border); }
.status[data-state="error"] { color: var(--error); border-left-color: var(--error); }
.status[data-state="working"] { border-left-color: var(--focus); }
.status[data-state="success"] { color: var(--success); border-left-color: var(--success); }

#results, .empty-state { margin-top: 30px; padding-top: 23px; border-top: 1px solid var(--soft-border); }
.results-heading { display: flex; align-items: start; justify-content: space-between; gap: 16px; margin-bottom: 12px; }
.results-heading p { margin-bottom: 0; font-size: .9rem; }

.feed-list { margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--soft-border); }
.feed-item { padding: 17px 0; border-bottom: 1px solid var(--soft-border); }
.feed-topline { display: flex; align-items: center; gap: 8px; margin-bottom: 5px; }
.feed-title { margin: 0; font-weight: 650; overflow-wrap: anywhere; }
.format {
  flex: none;
  padding: 1px 6px;
  color: var(--muted);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 3px;
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .025em;
  text-transform: uppercase;
}
.format.podcast { color: var(--success); border-color: var(--success); }
.feed-url { display: block; margin-bottom: 10px; color: var(--muted); font-size: .875rem; overflow-wrap: anywhere; }
.feed-actions { display: flex; align-items: center; gap: 12px; font-size: .875rem; }
.feed-actions button { min-height: 32px; padding: 4px 9px; }
.feed-actions a { color: inherit; }
.verification { color: var(--muted); }

.empty-state p { margin-bottom: 0; color: var(--muted); }
.settings { margin-top: 30px; padding-top: 20px; border-top: 1px solid var(--soft-border); }
summary { width: fit-content; cursor: pointer; font-weight: 600; }
.settings-body { margin-top: 16px; }
.check-row { display: flex; align-items: start; gap: 9px; font-weight: 400; }
.check-row input { margin-top: 5px; }
.settings code { font-size: .85em; }
.settings .help { margin-bottom: 0; }

footer { margin-top: 40px; padding-top: 20px; border-top: 1px solid var(--soft-border); color: var(--muted); font-size: .82rem; }
footer p { margin-bottom: 16px; }
footer label { display: inline; margin-right: 7px; font-weight: 400; }
footer select { padding: 4px 24px 4px 7px; color: var(--text); background: var(--background); border: 1px solid var(--border); border-radius: 4px; }

[hidden] { display: none !important; }

@media (max-width: 520px) {
  main { margin-top: 22px; }
  .input-row { display: block; }
  .input-row button { width: 100%; margin-top: 10px; }
  .results-heading { display: block; }
  .results-heading button { margin-top: 12px; }
  .feed-topline { align-items: start; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; }
}