:root {
  --bg: #0d0d12;
  --panel: #1a1a22;
  --border: #2c2c38;
  --primary: #7c5cff;
  --primary-hover: #6a4bee;
  --text: #eaeaf0;
  --text-dim: #9494a8;
  --success: #4caf7d;
  --error: #ff6b6b;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Pretendard", "Apple SD Gothic Neo", "Malgun Gothic", sans-serif;
}

.center-page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.brand h1, .card h1 {
  font-size: 26px;
  margin: 0 0 8px;
}

.sub {
  color: var(--text-dim);
  font-size: 14px;
  margin: 0 0 24px;
}

.menu-buttons {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
}

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 28px;
  width: 100%;
  max-width: 420px;
}

form label {
  display: block;
  font-size: 13px;
  color: var(--text-dim);
  margin-bottom: 14px;
}

input, textarea {
  display: block;
  width: 100%;
  margin-top: 6px;
  padding: 10px 12px;
  background: #101015;
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  font-size: 14px;
}

input:focus, textarea:focus {
  outline: none;
  border-color: var(--primary);
}

.btn {
  display: inline-block;
  padding: 10px 18px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.15s ease, border-color 0.15s ease;
}

.btn-primary {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
  width: 100%;
}

.btn-primary:hover { background: var(--primary-hover); }

.btn-ghost:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.back-link {
  display: inline-block;
  margin-top: 16px;
  color: var(--text-dim);
  font-size: 13px;
  text-decoration: none;
}

.back-link:hover { color: var(--text); }

#message, #login-message, #password-message {
  font-size: 13px;
  margin-top: 10px;
  min-height: 18px;
}

.msg-success { color: var(--success); }
.msg-error { color: var(--error); }