:root {
  --teal: #4cb0b8;
  --teal-dark: #39868d;
  --teal-deep: #17393c;
  --teal-text: #2b6a70;
  --paper: #f6f9f9;
}

* { box-sizing: border-box; }

html, body { height: 100%; }

body {
  margin: 0;
  display: grid;
  place-items: center;
  padding: 2rem 1.25rem;
  background: var(--paper);
  color: var(--teal-deep);
  font: 400 1rem/1.6 'IBM Plex Sans', system-ui, sans-serif;
  text-align: center;
}

main {
  width: 100%;
  max-width: 30rem;
  animation: rise 0.7s cubic-bezier(0.2, 0.7, 0.2, 1) both;
}

.logo { width: min(15rem, 70%); height: auto; margin: 0 auto 2.25rem; display: block; }

h1 {
  font-family: 'Piazzolla', Georgia, serif;
  font-weight: 500;
  font-size: clamp(1.6rem, 5vw, 2.1rem);
  line-height: 1.2;
  margin: 0 0 0.75rem;
}

h1::after {
  content: "";
  display: block;
  width: 2.75rem;
  height: 2px;
  margin: 1rem auto 0;
  background: var(--teal);
}

p { margin: 0 0 1rem; color: var(--teal-text); }

a { color: var(--teal-dark); }

.contact a { color: var(--teal-deep); font-weight: 500; text-decoration: none; }

.admin {
  margin-top: 3rem;
  font-size: 0.875rem;
  color: var(--teal-text);
}

form { display: grid; gap: 0.75rem; margin-top: 1.5rem; text-align: left; }

label { font-size: 0.875rem; font-weight: 500; }

input {
  font: inherit;
  width: 100%;
  padding: 0.8rem 0.9rem;
  border: 1px solid #c6d8d9;
  border-radius: 4px;
  background: #fff;
  color: var(--teal-deep);
}

input:focus-visible,
button:focus-visible,
a:focus-visible { outline: 2px solid var(--teal); outline-offset: 2px; }

button {
  font: inherit;
  font-weight: 500;
  padding: 0.85rem 1rem;
  border: 0;
  border-radius: 4px;
  background: var(--teal-deep);
  color: #fff;
  cursor: pointer;
}

button:hover { background: var(--teal-dark); }

.error {
  margin: 0;
  padding: 0.6rem 0.8rem;
  border-radius: 4px;
  background: #fbeaea;
  color: #8a2c2c;
  font-size: 0.9rem;
}

.back { display: inline-block; margin-top: 1.5rem; font-size: 0.875rem; }

@keyframes rise {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: none; }
}

@media (prefers-reduced-motion: reduce) {
  main { animation: none; }
}