/* Zyphra — flat dark UI, no gradients */

:root {
  --bg: #0c0c0e;
  --bg-elevated: #141418;
  --border: #26262c;
  --text: #f4f4f5;
  --muted: #a1a1aa;
  --accent: #8b7cf8;
  --accent-2: #22d3c7;
  --danger: #f87171;
  --radius: 10px;
  --font-sans: "DM Sans", system-ui, -apple-system, sans-serif;
  --content-max: 68rem;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  color-scheme: dark;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
}

a {
  color: var(--accent-2);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  padding: 0.5rem 1rem;
  background: var(--accent);
  color: var(--bg);
}

.skip-link:focus {
  left: 0;
  z-index: 100;
}

.site-header {
  border-bottom: 1px solid var(--border);
  background: var(--bg);
  position: sticky;
  top: 0;
  z-index: 50;
}

.site-header__inner {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 1rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--text);
  font-weight: 600;
  letter-spacing: -0.02em;
  font-size: 1.125rem;
}

.brand:hover {
  text-decoration: none;
  color: var(--text);
}

.brand__logo {
  height: 2rem;
  width: auto;
  display: block;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 1.25rem;
}

.nav a {
  color: var(--muted);
  font-size: 0.9375rem;
}

.nav a:hover {
  color: var(--text);
  text-decoration: none;
}

.nav__cta {
  color: var(--accent-2) !important;
}

main {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 2.5rem 1.5rem 4rem;
}

.site-footer {
  border-top: 1px solid var(--border);
  margin-top: auto;
  padding: 2rem 1.5rem;
  color: var(--muted);
  font-size: 0.875rem;
}

.site-footer__inner {
  max-width: var(--content-max);
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 1rem 1.75rem;
}

.site-footer__inner > p {
  margin: 0;
}

.site-footer__links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.25rem;
}

.site-footer__links a {
  color: var(--muted);
  text-decoration: underline;
  text-underline-offset: 0.15em;
}

.site-footer__links a:hover {
  color: var(--text);
}

.hero {
  padding: 2rem 0 3rem;
}

.hero h1 {
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin: 0 0 1rem;
}

.hero__lede {
  font-size: 1.125rem;
  color: var(--muted);
  max-width: 36rem;
  margin: 0 0 1.75rem;
}

.section-title {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--muted);
  margin: 0 0 1rem;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(17rem, 1fr));
  gap: 1.25rem;
}

.card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.35rem 1.35rem 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.card h2,
.card h3 {
  margin: 0;
  font-size: 1.125rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.card__meta {
  font-size: 0.8125rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.9375rem;
  flex: 1;
}

.card__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 0.25rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.5rem 1rem;
  border-radius: 8px;
  font-size: 0.875rem;
  font-weight: 500;
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  font-family: inherit;
}

.btn:hover {
  text-decoration: none;
}

.btn--primary {
  background: var(--accent);
  color: var(--bg);
  border-color: var(--accent);
}

.btn--primary:hover {
  filter: brightness(1.08);
  color: var(--bg);
}

.btn--ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--border);
}

.btn--ghost:hover {
  border-color: var(--muted);
  color: var(--text);
}

.btn--accent2 {
  background: transparent;
  color: var(--accent-2);
  border-color: var(--accent-2);
}

.btn--accent2:hover {
  background: rgba(34, 211, 199, 0.08);
  color: var(--accent-2);
}

.page-head {
  margin-bottom: 2rem;
}

.page-head h1 {
  margin: 0 0 0.5rem;
  font-size: 2rem;
  letter-spacing: -0.03em;
}

.page-head p {
  margin: 0;
  color: var(--muted);
  max-width: 40rem;
}

.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.filters a {
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.8125rem;
}

.filters a:hover {
  color: var(--text);
  border-color: var(--muted);
  text-decoration: none;
}

.filters a.is-active {
  border-color: var(--accent);
  color: var(--accent);
}

.prose {
  max-width: 42rem;
}

.prose p {
  color: var(--muted);
}

.replace-hint {
  font-size: 0.8125rem;
  color: var(--danger);
  border-left: 3px solid var(--danger);
  padding-left: 0.75rem;
  margin: 1rem 0;
}

.form-stack {
  max-width: 22rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.form-stack label {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  font-size: 0.875rem;
  color: var(--muted);
}

.form-stack input {
  padding: 0.5rem 0.65rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  color: var(--text);
  font: inherit;
}

.form-stack .errorlist {
  margin: 0;
  padding-left: 1.1rem;
  color: var(--danger);
  font-size: 0.8125rem;
}

.messages {
  list-style: none;
  padding: 0;
  margin: 0 0 1rem;
}

.messages li {
  padding: 0.65rem 1rem;
  border-radius: var(--radius);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  margin-bottom: 0.5rem;
}

.play-panel {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-elevated);
  padding: 1.5rem;
  min-height: 12rem;
}

.layout-stack {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.layout-stack main {
  flex: 1;
}