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

:root {
  --bg-primary: #0f1117;
  --bg-secondary: #161822;
  --bg-tertiary: #1c1f2e;
  --border: #2a2d44;
  --text-primary: #e4e4e7;
  --text-secondary: #a1a1aa;
  --text-muted: #71717a;
  --accent: #6366f1;
  --red: #ef4444;
  --red-bg: rgba(239, 68, 68, 0.1);
  --red-border: rgba(239, 68, 68, 0.3);
  --radius: 8px;
  --radius-lg: 12px;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

html, body {
  height: 100%;
  font-family: var(--font);
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: 14px;
  -webkit-font-smoothing: antialiased;
}

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

.login-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 48px 40px;
  max-width: 400px;
  width: 100%;
  text-align: center;
}

.login-logo {
  display: flex;
  justify-content: center;
  margin-bottom: 24px;
}

.login-logo-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: linear-gradient(135deg, #6366f1, #a855f7);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 24px;
  color: white;
}

.login-card h1 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 6px;
}

.login-subtitle {
  color: var(--text-muted);
  font-size: 13px;
  margin-bottom: 32px;
}

.login-error {
  background: var(--red-bg);
  border: 1px solid var(--red-border);
  color: var(--red);
  padding: 10px 16px;
  border-radius: var(--radius);
  font-size: 13px;
  margin-bottom: 20px;
  text-align: left;
}

.login-error.hidden {
  display: none;
}

.btn-google {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  width: 100%;
  padding: 12px 20px;
  background: white;
  color: #3c4043;
  border: 1px solid #dadce0;
  border-radius: var(--radius);
  font-family: var(--font);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.15s ease;
}

.btn-google:hover {
  background: #f8f9fa;
  border-color: #c6c9cd;
  box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}

.login-footer {
  margin-top: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  color: var(--text-muted);
  font-size: 12px;
}

.login-footer strong {
  color: var(--text-secondary);
}