:root {
  --night: #1a1630;
  --ink: #241c33;
  --paper: #f4ebdd;
  --moon: #8eadd4;
  --mist: #c9c0d4;
  --line: #e7dccb;
  --danger: #9c3b45;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  background: var(--night);
  color: var(--paper);
  font-family: "Golos Text", "Segoe UI", sans-serif;
  font-size: 1.05rem;
  line-height: 1.5;
}

main {
  width: min(26rem, calc(100% - 2rem));
  margin: 0 auto;
  padding: 1.6rem 0 2.5rem;
}

.mast h1 {
  margin: 0.85rem 0 0.45rem;
  font-family: Literata, Georgia, serif;
  font-size: 2.05rem;
  font-weight: 650;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.mast p,
.sheet p {
  margin: 0;
}

.moon {
  width: 2.4rem;
  height: 2.4rem;
  fill: var(--moon);
  display: block;
}

form {
  display: grid;
  gap: 0.55rem;
  margin-top: 1.6rem;
}

label {
  font-size: 0.95rem;
}

input[type="date"] {
  width: 100%;
  margin: 0;
  padding: 0.7rem 0;
  border: 0;
  border-bottom: 1px solid var(--mist);
  border-radius: 0;
  background: transparent;
  color: var(--paper);
  color-scheme: dark;
  font: inherit;
  font-size: 1.35rem;
}

input[type="date"]:focus {
  outline: 2px solid var(--paper);
  outline-offset: 4px;
}

button {
  margin-top: 0.7rem;
  padding: 0.85rem 1rem;
  border: 0;
  border-radius: 0.35rem;
  background: var(--paper);
  color: var(--ink);
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}

button:focus-visible {
  outline: 2px solid var(--moon);
  outline-offset: 3px;
}

.form-error {
  margin: 0;
  color: #f0b4ba;
  font-size: 0.95rem;
}

.sheet {
  margin-top: 1.5rem;
  padding: 1.25rem 1.15rem 1.35rem;
  background: var(--paper);
  color: var(--ink);
  border-radius: 1.1rem;
}

.sheet[hidden] {
  display: none;
}

.sheet h2 {
  margin: 0.25rem 0 0.35rem;
  font-family: Literata, Georgia, serif;
  font-size: 2.7rem;
  font-weight: 650;
  font-style: italic;
  line-height: 1.05;
  letter-spacing: -0.03em;
}

.meta {
  margin: 0 0 0.9rem;
  padding-bottom: 0.85rem;
  border-bottom: 1px solid var(--line);
}

.sheet p + p {
  margin-top: 0.75rem;
}

.fine {
  margin-top: 1rem;
  color: #6d6256;
  font-size: 0.9rem;
}

@media (prefers-reduced-motion: no-preference) {
  .sheet.is-open {
    animation: rise 220ms ease-out;
  }
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}