:root {
  --cloud-bg: #f6f8fc;
  --cloud-surface: #ffffff;
  --cloud-border: #e3e6ea;
  --cloud-text: #1f2430;
  --cloud-text-muted: #5f6368;
  --cloud-accent: #4c8dff;
  --cloud-error: #d93025;
  --cloud-shadow: 0 1px 2px rgba(0, 0, 0, 0.06), 0 1px 6px rgba(0, 0, 0, 0.04);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--cloud-bg);
  color: var(--cloud-text);
  font-family: "Hiragino Kaku Gothic ProN", "Yu Gothic", "Helvetica Neue", Arial, sans-serif;
  min-height: 100vh;
}

/* ---------- Top bar ---------- */

.topbar {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 14px 24px;
  background: var(--cloud-surface);
  border-bottom: 1px solid var(--cloud-border);
}

.topbar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 700;
}

.topbar-icon {
  width: 22px;
  height: 22px;
  color: var(--cloud-text);
  flex-shrink: 0;
}

/* ---------- Auth card ---------- */

.auth-page {
  display: flex;
  justify-content: center;
  padding: 48px 24px;
}

.auth-card {
  width: 100%;
  max-width: 360px;
  padding: 32px;
  background: var(--cloud-surface);
  border: 1px solid var(--cloud-border);
  border-radius: 12px;
  box-shadow: var(--cloud-shadow);
}

.auth-card h1 {
  font-size: 20px;
  margin: 0 0 24px;
  text-align: center;
}

.auth-error {
  margin: 0 0 16px;
  padding: 10px 12px;
  border-radius: 8px;
  background: #fce8e6;
  color: var(--cloud-error);
  font-size: 13px;
}

.auth-form p {
  margin: 0 0 16px;
}

.auth-form .errorlist {
  display: none;
}

.auth-form label {
  display: block;
  margin-bottom: 6px;
  font-size: 13px;
  color: var(--cloud-text-muted);
}

.auth-form input[type="text"],
.auth-form input[type="password"],
.auth-form input[type="email"] {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--cloud-border);
  border-radius: 8px;
  font-size: 14px;
  color: var(--cloud-text);
  background: var(--cloud-surface);
}

.auth-form input[type="text"]:focus,
.auth-form input[type="password"]:focus,
.auth-form input[type="email"]:focus {
  outline: none;
  border-color: var(--cloud-accent);
}

.auth-submit {
  width: 100%;
  padding: 10px 12px;
  margin-top: 4px;
  border: none;
  border-radius: 20px;
  background: var(--cloud-accent);
  color: #ffffff;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s ease;
}

.auth-submit:hover {
  background: #3d7ce0;
}

.auth-links {
  margin-top: 20px;
  text-align: center;
  font-size: 13px;
}

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

.auth-links a:hover {
  text-decoration: underline;
}

.auth-message {
  color: var(--cloud-text-muted);
  font-size: 14px;
  margin: 0 0 20px;
  text-align: center;
}