:root {
  --bg-primary: #0f1117;
  --bg-secondary: #1a1d27;
  --bg-tertiary: #252833;
  --bg-card: #1e2130;
  --border: #2d3148;
  --text-primary: #e8eaf0;
  --text-secondary: #9ca3b8;
  --accent: #4f8cff;
  --accent-hover: #6ba0ff;
  --success: #34d399;
  --radius: 8px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.login-bg {
  position: fixed;
  inset: 0;
  z-index: 0;
  background:
    radial-gradient(ellipse 80% 60% at 50% 0%, rgba(79, 140, 255, 0.08) 0%, transparent 60%),
    radial-gradient(ellipse 60% 40% at 80% 100%, rgba(52, 211, 153, 0.05) 0%, transparent 50%),
    var(--bg-primary);
}

.login-container {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 420px;
  padding: 20px;
}

.login-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 40px 36px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4), 0 0 0 1px rgba(255, 255, 255, 0.02);
}

.login-logo {
  text-align: center;
  margin-bottom: 8px;
}

.login-logo h1 {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: 1px;
}

.login-logo h1 span {
  color: var(--accent);
}

.login-logo .version {
  font-size: 11px;
  color: var(--text-secondary);
  font-weight: 400;
  margin-left: 4px;
}

.login-desc {
  text-align: center;
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 32px;
  line-height: 1.5;
}

.login-divider {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 24px 0;
  color: var(--text-secondary);
  font-size: 11px;
}

.login-divider::before,
.login-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}

.btn-google {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  width: 100%;
  padding: 14px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-primary);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  text-decoration: none;
}

.btn-google:hover {
  border-color: var(--accent);
  background: rgba(79, 140, 255, 0.08);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(79, 140, 255, 0.15);
}

.btn-google:active {
  transform: translateY(0);
}

.btn-google svg {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.login-footer {
  text-align: center;
  margin-top: 24px;
  font-size: 11px;
  color: var(--text-secondary);
  line-height: 1.6;
}

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

.login-footer a:hover {
  text-decoration: underline;
}

.login-error {
  background: rgba(248, 113, 113, 0.1);
  border: 1px solid rgba(248, 113, 113, 0.25);
  border-radius: var(--radius);
  padding: 10px 14px;
  margin-bottom: 20px;
  font-size: 12px;
  color: #f87171;
  text-align: center;
  display: none;
}

.login-error.show {
  display: block;
}

@media (max-width: 480px) {
  .login-card {
    padding: 32px 24px;
    border-radius: 12px;
  }
  .login-logo h1 {
    font-size: 24px;
  }
}