:root {
  --bg-1: #f5efe6;
  --bg-2: #d5e4d7;
  --card: #ffffffd8;
  --text: #243642;
  --accent: #2f6f6f;
  --danger: #b34d4d;
  --ok: #2e7d51;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background: radial-gradient(circle at 15% 20%, var(--bg-1), transparent 35%),
    radial-gradient(circle at 85% 80%, var(--bg-2), transparent 30%),
    linear-gradient(145deg, #f0e7da, #dce9de);
  min-height: 100vh;
}

.page {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 20px;
}

.card {
  width: 100%;
  max-width: 520px;
  background: var(--card);
  border: 1px solid #ffffff;
  border-radius: 18px;
  padding: 28px;
  backdrop-filter: blur(4px);
  box-shadow: 0 12px 40px #2f6f6f22;
}

h1 {
  margin-top: 0;
  margin-bottom: 10px;
  font-size: 1.6rem;
}

p {
  line-height: 1.5;
}

.form {
  margin-top: 16px;
  display: grid;
  gap: 10px;
}

label {
  font-weight: 600;
}

input {
  border: 1px solid #b8c7bd;
  border-radius: 10px;
  padding: 10px 12px;
  font-size: 1rem;
  outline: none;
}

input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px #2f6f6f26;
}

button {
  border: none;
  border-radius: 10px;
  background: var(--accent);
  color: white;
  padding: 10px 12px;
  font-weight: 700;
  font-size: 1rem;
  cursor: pointer;
}

button:hover {
  filter: brightness(1.05);
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.7;
  filter: none;
}

.message {
  min-height: 24px;
  margin-top: 10px;
}

.message.error {
  color: var(--danger);
}

.message.ok {
  color: var(--ok);
}

.ok {
  color: var(--ok);
  font-weight: 700;
}

#adminEntry a {
  color: var(--accent);
  font-weight: 700;
  text-decoration: none;
}

#adminEntry a:hover {
  text-decoration: underline;
}

.hidden {
  display: none;
}