:root {
  --bg-start: #f6efe7;
  --bg-end: #d9e7f2;
  --card: rgba(255, 255, 255, 0.88);
  --text: #1f2933;
  --muted: #6b7280;
  --line: rgba(31, 41, 51, 0.12);
  --accent: #d97706;
  --accent-hover: #b45309;
  --shadow: 0 24px 60px rgba(31, 41, 51, 0.16);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  padding: 24px;
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(217, 119, 6, 0.18), transparent 32%),
    radial-gradient(circle at bottom right, rgba(37, 99, 235, 0.18), transparent 30%),
    linear-gradient(135deg, var(--bg-start), var(--bg-end));
}

.page-shell {
  flex: 1;
  width: 100%;
  display: grid;
  place-items: center;
}

.login-card {
  width: min(100%, 420px);
  padding: 36px 30px;
  border: 1px solid rgba(255, 255, 255, 0.65);
  border-radius: 24px;
  background: var(--card);
  backdrop-filter: blur(14px);
  box-shadow: var(--shadow);
}

h1 {
  margin: 0 0 8px;
  font-size: 30px;
  letter-spacing: 0.04em;
}

.subtitle {
  margin: 0 0 28px;
  color: var(--muted);
  font-size: 14px;
}

.message {
  margin-bottom: 18px;
  padding: 12px 14px;
  border-radius: 14px;
  font-size: 14px;
}

.success-message {
  color: #166534;
  background: rgba(34, 197, 94, 0.14);
  border: 1px solid rgba(34, 197, 94, 0.24);
}

.error-message {
  color: #b91c1c;
  background: rgba(239, 68, 68, 0.12);
  border: 1px solid rgba(239, 68, 68, 0.2);
}

.field {
  margin-bottom: 18px;
}

label {
  display: block;
  margin-bottom: 8px;
  font-size: 14px;
  font-weight: 600;
}

input {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: 14px;
  font-size: 15px;
  background: rgba(255, 255, 255, 0.9);
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

input:focus {
  border-color: rgba(217, 119, 6, 0.7);
  box-shadow: 0 0 0 4px rgba(217, 119, 6, 0.14);
  transform: translateY(-1px);
}

.actions {
  margin-top: 24px;
  display: grid;
  gap: 12px;
}

button {
  width: 100%;
  padding: 14px 16px;
  border: 0;
  border-radius: 14px;
  font-size: 16px;
  font-weight: 700;
  color: #fff;
  background: linear-gradient(135deg, var(--accent), #f59e0b);
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
  box-shadow: 0 14px 30px rgba(217, 119, 6, 0.25);
}

button:hover {
  transform: translateY(-2px);
  background: linear-gradient(135deg, var(--accent-hover), var(--accent));
}

.guest-button {
  color: var(--accent);
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid rgba(217, 119, 6, 0.24);
  box-shadow: none;
}

.guest-button:hover {
  background: rgba(255, 247, 237, 0.96);
}

.footer {
  margin-top: 18px;
  text-align: center;
  font-size: 13px;
  color: var(--muted);
}

.filing-info {
  width: 100%;
  padding-top: 16px;
  text-align: center;
  font-size: 12px;
  line-height: 1.7;
  color: var(--muted);
}

.filing-info p {
  margin: 0;
}

@media (max-width: 480px) {
  .login-card {
    padding: 28px 20px;
    border-radius: 20px;
  }

  h1 {
    font-size: 26px;
  }
}