:root {
  --bg: #fefefe;
  --fg: #111;
  --fg-strong: #000;
  --fg-muted: #555;
  --fg-mutedier: #666;
  --label-fg: #444;
  --wordmark-fg: #333;
  --border: #eee;
  --input-border: #ccc;
  --input-bg: #fff;
  --input-readonly-bg: #f5f5f5;
  --input-readonly-fg: #555;
  --code-bg: #f5f5f5;
  --cta-bg: #111;
  --cta-fg: #fafafa;
  --cta-hover-bg: #000;
  --cta-hover-fg: #fff;
  --error-fg: #a31515;
  --info-fg: #1d6c1d;
  --toggle-track-bg: #f0f0f0;
  --toggle-track-border: #d8d8d8;
  --toggle-thumb-bg: #ffffff;
  --toggle-thumb-shadow: rgba(0, 0, 0, 0.12);
  --toggle-icon-fg: #5a5a5a;
}

[data-theme="dark"] {
  --bg: #0d0d0e;
  --fg: #e8e8e8;
  --fg-strong: #ffffff;
  --fg-muted: #9a9a9a;
  --fg-mutedier: #8a8a8a;
  --label-fg: #b0b0b0;
  --wordmark-fg: #aaa;
  --border: #2a2a2a;
  --input-border: #3a3a3a;
  --input-bg: #161617;
  --input-readonly-bg: #1a1a1b;
  --input-readonly-fg: #aaa;
  --code-bg: #1a1a1b;
  --cta-bg: #e8e8e8;
  --cta-fg: #0d0d0e;
  --cta-hover-bg: #ffffff;
  --cta-hover-fg: #000;
  --error-fg: #ff8a80;
  --info-fg: #80d080;
  --toggle-track-bg: #1f1f20;
  --toggle-track-border: #3a3a3a;
  --toggle-thumb-bg: #4a4a4a;
  --toggle-thumb-shadow: rgba(0, 0, 0, 0.4);
  --toggle-icon-fg: #b0b0b0;
}

html { background: var(--bg); }

body {
  font-family: Georgia, "Times New Roman", Times, serif;
  color: var(--fg);
  background: var(--bg);
  max-width: 36rem;
  margin: 0 auto;
  padding: 2rem 1.5rem 4rem;
  line-height: 1.6;
  font-size: 1.0625rem;
}

header {
  margin-bottom: 2.5rem;
}

.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 0.55em;
  text-decoration: none;
  font-size: 0.85rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--wordmark-fg);
}

.wordmark:hover { color: var(--fg-strong); }

.logo-mark {
  width: 1.6em;
  height: 1.6em;
  flex-shrink: 0;
}

.wordmark-large {
  display: flex;
  align-items: center;
  gap: 0.35em;
  font-size: 3rem;
  letter-spacing: 0.04em;
  font-weight: normal;
  margin: 1rem 0 1.5rem;
}

.wordmark-large > svg {
  width: 1em;
  height: 1em;
  flex-shrink: 0;
}

h1 {
  font-weight: normal;
  font-size: 1.75rem;
  margin: 0 0 1rem;
}

h2 {
  font-weight: normal;
  font-size: 1.25rem;
  margin: 2.25rem 0 0.5rem;
}

p { margin: 1rem 0; }

ul { padding-left: 1.25rem; }
li { margin: 0.5rem 0; }

a {
  color: var(--fg);
}

a:hover {
  color: var(--fg-strong);
}

.lead {
  font-size: 1.15rem;
  line-height: 1.55;
  margin-bottom: 2rem;
}

.cta {
  display: inline-block;
  margin-top: 0.75rem;
  padding: 0.6rem 1.75rem;
  background: var(--cta-bg);
  color: var(--cta-fg);
  border: 1px solid var(--cta-bg);
  text-decoration: none;
}

.cta:hover {
  background: var(--cta-hover-bg);
  color: var(--cta-hover-fg);
}

.cta-secondary {
  background: transparent;
  color: var(--fg);
  border-color: var(--fg);
}

.cta-secondary:hover {
  background: var(--fg);
  color: var(--bg);
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.alert-sample {
  border: 1px solid var(--border);
  padding: 1rem 1.25rem;
  margin: 2rem 0 0;
}

.alert-tag {
  display: inline-block;
  font-family: "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--fg-mutedier);
  margin-bottom: 0.5rem;
}

.alert-meta {
  font-size: 0.9rem;
  color: var(--fg-muted);
  margin: 0.2rem 0;
}

.alert-headline {
  font-size: 1.05rem;
  color: var(--fg-strong);
  margin: 0.35rem 0;
}

.alert-time {
  font-family: "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.82rem;
  color: var(--fg-mutedier);
  margin: 0.2rem 0;
}

.alert-channels {
  font-size: 0.85rem;
  color: var(--fg-mutedier);
  margin: 0.5rem 0 2rem;
  padding: 0 0.25rem;
}

form { margin: 1.25rem 0; }

label {
  display: block;
  margin-top: 1rem;
  font-size: 0.9rem;
  color: var(--label-fg);
}

input[type="email"],
input[type="password"],
input[type="text"] {
  display: block;
  width: 100%;
  padding: 0.55rem 0.75rem;
  border: 1px solid var(--input-border);
  color: var(--fg);
  font-family: inherit;
  font-size: 1rem;
  margin-top: 0.25rem;
  box-sizing: border-box;
  background: var(--input-bg);
}

input[readonly] {
  background: var(--input-readonly-bg);
  color: var(--input-readonly-fg);
}

input:focus {
  outline: none;
  border-color: var(--fg);
}

small {
  display: block;
  margin-top: 0.35rem;
  font-size: 0.85rem;
  color: var(--fg-mutedier);
}

button {
  display: inline-block;
  margin-top: 1.25rem;
  padding: 0.55rem 1.5rem;
  font-family: inherit;
  font-size: 1rem;
  background: var(--cta-bg);
  color: var(--cta-fg);
  border: 1px solid var(--cta-bg);
  cursor: pointer;
}

button:hover {
  background: var(--cta-hover-bg);
  color: var(--cta-hover-fg);
}

.error {
  color: var(--error-fg);
  margin: 1rem 0;
}

.info {
  color: var(--info-fg);
  margin: 1rem 0;
}

.muted {
  color: var(--fg-mutedier);
  font-size: 0.9rem;
}

footer {
  margin-top: 4rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  font-size: 0.88rem;
  color: var(--fg-muted);
}

footer p { margin: 0.75rem 0; }

code {
  font-family: "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.92em;
  background: var(--code-bg);
  padding: 0.05em 0.3em;
}

#theme-toggle {
  position: fixed;
  top: 1rem;
  right: 1rem;
  margin: 0;
  padding: 0 0.35rem;
  width: 3.25rem;
  height: 1.65rem;
  background: var(--toggle-track-bg);
  border: 1px solid var(--toggle-track-border);
  border-radius: 999px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  box-sizing: border-box;
}

#theme-toggle .theme-icon {
  width: 0.85rem;
  height: 0.85rem;
  color: var(--toggle-icon-fg);
  position: relative;
  z-index: 1;
  flex: 0 0 auto;
}

#theme-toggle .theme-thumb {
  position: absolute;
  top: 0.15rem;
  left: 0.15rem;
  width: 1.25rem;
  height: 1.25rem;
  border-radius: 50%;
  background: var(--toggle-thumb-bg);
  box-shadow: 0 1px 2px var(--toggle-thumb-shadow);
  transition: transform 180ms ease;
  z-index: 0;
}

[data-theme="dark"] #theme-toggle .theme-thumb {
  transform: translateX(1.55rem);
}