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

body {
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.main-container {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  border-radius: 20px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
  padding: 3rem;
  width: 100%;
  max-width: 500px;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.header {
  text-align: center;
  margin-bottom: 2.5rem;
}

.header h1 {
  color: #2d3748;
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.header p {
  color: #718096;
  font-size: 1rem;
  line-height: 1.5;
}

.form-section {
  margin-bottom: 2rem;
}

.input-group {
  position: relative;
  margin-bottom: 1.5rem;
}

input[type="password"] {
  width: 100%;
  padding: 1rem;
  border: 2px solid #e2e8f0;
  border-radius: 12px;
  font-size: 1rem;
  transition: all 0.3s ease;
  background: white;
}

input[type="password"]:focus {
  outline: none;
  border-color: #667eea;
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
  transform: translateY(-2px);
}

.submit-btn {
  width: 100%;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  border: none;
  padding: 1rem 2rem;
  font-size: 1rem;
  font-weight: 600;
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.submit-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 25px rgba(102, 126, 234, 0.3);
}

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

.submit-btn.loading {
  opacity: 0.8;
  cursor: not-allowed;
}

.status {
  margin-top: 1rem;
  padding: 0.75rem;
  border-radius: 8px;
  font-size: 0.9rem;
  text-align: center;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.status.show {
  opacity: 1;
}

.status.error {
  background: #fed7d7;
  color: #c53030;
  border: 1px solid #feb2b2;
}

.status.success {
  background: #c6f6d5;
  color: #22543d;
  border: 1px solid #9ae6b4;
}

.tech-info {
  margin-top: 2.5rem;
  padding-top: 2rem;
  border-top: 1px solid #e2e8f0;
}

.tech-info h3 {
  color: #2d3748;
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.tech-stack {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.tech-item {
  background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
  padding: 0.5rem 0.75rem;
  border-radius: 8px;
  font-size: 0.8rem;
  font-weight: 500;
  color: #4a5568;
  text-align: center;
  border: 1px solid rgba(102, 126, 234, 0.1);
}

.architecture-note {
  background: linear-gradient(135deg, #ebf8ff 0%, #bee3f8 100%);
  padding: 1rem;
  border-radius: 10px;
  font-size: 0.85rem;
  line-height: 1.5;
  color: #2c5282;
  border-left: 4px solid #667eea;
}

.loading-spinner {
  display: none;
  width: 20px;
  height: 20px;
  border: 2px solid transparent;
  border-top: 2px solid white;
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin-right: 0.5rem;
}

.submit-btn.loading .loading-spinner {
  display: inline-block;
}

@keyframes spin {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

@media (max-width: 600px) {
  .main-container {
    padding: 2rem;
    margin: 1rem;
  }

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

  .tech-stack {
    grid-template-columns: repeat(2, 1fr);
  }
}