:root {
  --bg: #f8f7f2;
  --surface: #ffffff;
  --surface-soft: #f1efe4;
  --surface-strong: #e5f1f1;
  --text: #1b272d;
  --muted: #5f6970;
  --accent: #0b8078;
  --accent-strong: #095650;
  --ok: #2f7f45;
  --warning: #aa6400;
  --danger: #a9352a;
  --ring: rgba(11, 128, 120, 0.35);
  --radius-xl: 24px;
  --radius-lg: 16px;
  --radius-sm: 10px;
  --shadow: 0 12px 34px rgba(21, 43, 62, 0.12);
  --max-width: 1120px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: "Source Sans 3", "Segoe UI", sans-serif;
  color: var(--text);
  line-height: 1.5;
  min-height: 100vh;
  background:
    radial-gradient(50rem 32rem at 0% 0%, rgba(167, 221, 211, 0.25) 0%, transparent 55%),
    radial-gradient(45rem 30rem at 100% 100%, rgba(241, 214, 176, 0.22) 0%, transparent 60%),
    var(--bg);
}

a {
  color: inherit;
}

.app-shell {
  width: min(var(--max-width), calc(100% - 2rem));
  margin: 0 auto;
  padding-bottom: 2.5rem;
}

.app-header {
  position: sticky;
  top: 0;
  z-index: 20;
  margin-top: 1rem;
  padding: 0.7rem 1rem;
  background: color-mix(in srgb, var(--surface) 86%, transparent);
  border: 1px solid rgba(12, 29, 44, 0.08);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(12px);
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 1rem;
}

.brand {
  font-family: "Space Grotesk", "Trebuchet MS", sans-serif;
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 0.02em;
  text-decoration: none;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.nav-links a {
  text-decoration: none;
  border-radius: 999px;
  padding: 0.35rem 0.72rem;
  color: var(--muted);
  transition: background-color 150ms ease, color 150ms ease;
}

.nav-links a:hover {
  background: var(--surface-soft);
  color: var(--text);
}

.nav-links a.is-active {
  background: var(--surface-strong);
  color: var(--accent-strong);
  font-weight: 600;
}

.language-picker {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9rem;
  color: var(--muted);
}

.language-picker select,
input[type="range"],
button,
select {
  font: inherit;
}

.language-picker select {
  border: 1px solid rgba(12, 29, 44, 0.2);
  background: var(--surface);
  color: var(--text);
  border-radius: 999px;
  padding: 0.2rem 0.6rem;
}

.main-content {
  padding-top: 1.4rem;
}

.app-footer {
  margin-top: 2.8rem;
  border-top: 1px solid rgba(12, 29, 44, 0.12);
  padding-top: 0.9rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.card {
  background: var(--surface);
  border: 1px solid rgba(12, 29, 44, 0.08);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

h1,
h2,
h3,
h4 {
  font-family: "Space Grotesk", "Trebuchet MS", sans-serif;
  line-height: 1.2;
  margin: 0;
}

p {
  margin-top: 0;
}

.btn {
  border: 1px solid transparent;
  border-radius: 999px;
  padding: 0.55rem 1rem;
  cursor: pointer;
  transition: transform 160ms ease, background-color 160ms ease, border-color 160ms ease;
}

.btn:focus-visible,
input:focus-visible,
select:focus-visible {
  outline: 3px solid var(--ring);
  outline-offset: 2px;
}

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

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-primary:hover {
  background: var(--accent-strong);
}

.btn-secondary {
  background: var(--surface-soft);
  border-color: rgba(12, 29, 44, 0.14);
  color: var(--text);
}

.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  padding: 0.2rem 0.58rem;
  font-size: 0.76rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.badge-live {
  background: rgba(47, 127, 69, 0.15);
  color: #1d662f;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

@media (max-width: 900px) {
  .app-header {
    grid-template-columns: 1fr;
    gap: 0.7rem;
  }

  .nav-links {
    overflow: auto;
    white-space: nowrap;
    padding-bottom: 0.2rem;
  }

  .language-picker {
    justify-content: space-between;
  }
}

/* Quien pide menos movimiento en el sistema no debería ver los puntos
   desplazarse ni el token recorrer el ciclo: los estados siguen cambiando,
   pero saltan en vez de animarse. */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}