:root {
  color-scheme: light;
  --ink: #1d1d1d;
  --sheet: #ffffff;
  --accent: #1a3d7c;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: 'Noto Sans JP', 'Hiragino Sans', sans-serif;
  background: linear-gradient(135deg, #f7f5f0, #f1f7ff);
  color: var(--ink);
}

.page {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 32px 18px;
}

.card {
  width: min(420px, 92vw);
  background: var(--sheet);
  padding: 32px;
  border-radius: 22px;
  border: 1px solid rgba(0, 0, 0, 0.1);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
  animation: slide-up 0.5s ease both;
}

h1 {
  margin: 12px 0 10px;
  font-size: 28px;
}

.notice {
  margin: 0 0 18px;
  padding: 12px 14px;
  border-radius: 12px;
  font-size: 13px;
  border: 1px solid rgba(0, 0, 0, 0.08);
}

.notice.error {
  background: rgba(217, 42, 42, 0.08);
  border-color: rgba(217, 42, 42, 0.2);
  color: #8f2020;
}

.notice.success {
  background: rgba(42, 150, 85, 0.08);
  border-color: rgba(42, 150, 85, 0.2);
  color: #1f6d41;
}

.form {
  display: grid;
  gap: 14px;
}

label {
  display: grid;
  gap: 6px;
  font-size: 13px;
}

input {
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid rgba(0, 0, 0, 0.2);
  font-family: inherit;
}

.primary {
  margin-top: 6px;
  padding: 12px 18px;
  border: none;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--accent), #2e62c0);
  color: #fff;
  font-weight: 700;
  cursor: pointer;
}

.links {
  margin-top: 16px;
  display: flex;
  justify-content: space-between;
  font-size: 13px;
}

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

@keyframes slide-up {
  from {
    opacity: 0;
    transform: translateY(16px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}