:root {
  color-scheme: light;
  --bg: #222222;
  --card: #ffffff;
  --ink: #1f1d1a;
  --muted: #6c655f;
  --accent: #ff5353;
  --accent-soft: #ffe3e3;
  --border: #e2ddd6;
  --shadow: 0 18px 40px rgba(18, 16, 12, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: 'Inria Sans', 'Segoe UI', sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.5;
}

h1,
h2 {
  font-family: 'Inria Sans', 'Segoe UI', sans-serif;
  font-weight: 700;
  margin: 0;
}

p {
  margin: 0;
  color: #fff;
}

a,
a:visited {
  color: var(--accent);
}

a:hover,
a:focus {
  color: var(--accent);
}

.page {
  min-height: 100vh;
  max-width: 900px;
  margin: 0 auto;
  padding: 100px 20px 40px;
  display: grid;
  gap: 20px;
  justify-items: center;
}

.header {
  display: grid;
  gap: 12px;
  max-width: 640px;
}

.title {
  color: #ccc;
  margin-bottom: 0;
}

.byline {
  font-size: 12px;
}

.intro {
  color: #fff;
}

.card {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  gap: 16px;
  padding: 20px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: var(--shadow);
  max-width: 540px;
}

.field {
  display: grid;
  gap: 8px;
  flex: 1 1 240px;
  font-size: 0.95rem;
  color: var(--muted);
}

.field span {
  font-weight: 500;
}

input[type='date'] {
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid var(--border);
  font-size: 1rem;
  font-family: 'Inria Sans', 'Segoe UI', sans-serif;
}

button {
  padding: 12px 18px;
  border-radius: 999px;
  border: none;
  background: var(--accent);
  color: #fff;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  box-shadow: 0 12px 20px rgba(28, 91, 74, 0.22);
}

button:hover {
  transform: translateY(-1px);
  box-shadow: 0 14px 24px rgba(28, 91, 74, 0.28);
}

.result {
  display: flex;
  gap: 16px;
  align-items: center;
  background: var(--accent-soft);
  border-radius: 16px;
  padding: 18px 20px;
  max-width: 560px;
}

.badge {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  background: var(--accent);
  color: #fff;
  display: grid;
  place-items: center;
  font-weight: 700;
  font-size: 1.1rem;
}

.details {
  display: grid;
  gap: 4px;
}

.details .title {
  font-weight: 600;
  color: var(--ink);
}

.range {
  color: var(--muted);
  font-size: 0.95rem;
}

.message {
  max-width: 560px;
  background: #fff4f0;
  border: 1px solid #f1d2c8;
  color: #8a3a25;
  padding: 14px 18px;
  border-radius: 14px;
}

.list {
  max-width: 560px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 20px;
}

.list h2 {
  margin-bottom: 12px;
  font-size: 1.1rem;
  color: var(--ink);
}

.list ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 6px;
  color: var(--muted);
}

.list strong {
  color: var(--ink);
}

.result[hidden],
.message[hidden] {
  display: none;
}

@media (max-width: 600px) {
  .card {
    padding: 16px;
  }

  .result {
    flex-direction: column;
    align-items: flex-start;
  }
}