:root {
  --bg-dark: #0b1220;
  --bg-card: rgba(17, 24, 39, 0.3);
  --primary: #3b82f6;
  --primary-hover: #2563eb;
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --border-soft: rgba(255, 255, 255, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  height: 100vh;
  font-family: 'Inter', 'Segoe UI', sans-serif;
  background: #0b1220;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-main);
  overflow: hidden;
}

.background-blur {
  position: absolute;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(59,130,246,0.15) 0%, transparent 70%);
  filter: blur(80px);
  z-index: 0;
}

.login-container {
  position: relative;
  z-index: 1;
  width: 420px;
  max-width: 92%;
  padding: 50px 45px;
  border-radius: 18px;
  background: var(--bg-card);
  backdrop-filter: blur(18px);
  border: 1px solid var(--border-soft);
  box-shadow: 0 20px 40px rgba(0,0,0,0.6);
  text-align: center;
}

.logo-circle {
  width: 70px;
  height: 70px;
  margin: 0 auto 18px;
  border-radius: 50%;
  background: linear-gradient(135deg, #3b82f6, #2563eb);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  font-size: 1.4rem;
  letter-spacing: 1px;
  color: white;
  user-select: none;
}

.logo h1 {
  margin: 0;
  font-size: 1.8rem;
  font-weight: 700;
  user-select: none;
}

.tagline {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-top: 6px;
  user-select: none;
}

.divider {
  height: 1px;
  background: var(--border-soft);
  margin: 30px 0;
}

.primary-btn {
  width: 100%;
  padding: 14px 18px;
  font-size: 1rem;
  font-weight: 600;
  border-radius: 10px;
  border: none;
  cursor: pointer;
  background: var(--primary);
  color: white;
  transition: all 0.25s ease;
}

.primary-btn:hover {
  background: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(37, 99, 235, 0.4);
}

.primary-btn:active {
  transform: translateY(0);
  box-shadow: none;
}

.footer-text {
  margin-top: 25px;
  font-size: 0.8rem;
  color: var(--text-muted);
  user-select: none;
}

.auth-provider {
  margin-top: 28px;
  font-size: 0.8rem;
  color: var(--text-muted);
  user-select: none;
}

.auth-provider a {
  color: #60a5fa;
  text-decoration: none;
  font-weight: 500;
}

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

/* Mobile Styles */
@media (max-width: 480px) {
  .login-container {
    width: 90%;
    padding: 35px 25px;
    border-radius: 14px;
  }

  .logo-circle {
    width: 55px;
    height: 55px;
    font-size: 1.1rem;
    margin-bottom: 12px;
  }

  .logo h1 {
    font-size: 1.5rem;
  }

  .tagline {
    font-size: 0.8rem;
    margin-top: 4px;
  }

  .divider {
    margin: 20px 0;
  }

  .primary-btn {
    padding: 12px 16px;
    font-size: 0.95rem;
  }

  .auth-provider {
    font-size: 0.75rem;
    margin-top: 20px;
  }

  .background-blur {
    width: 400px;
    height: 400px;
    filter: blur(60px);
  }
}