:root {
  --color-primary: #2ecc71;
  --color-primary-dark: #27ae60;
  --color-secondary: #3498db;
  --color-text: #2c3e50;
  --color-text-light: #7f8c8d;
  --color-background: #ecf0f1;
  --color-white: #ffffff;
  --color-error: #e74c3c;
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
}

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

body {
  font-family: 'Poppins', sans-serif;
  background: linear-gradient(135deg, #080808 0%, #161a19 100%), url();
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  color: var(--color-text);
}

.container {
  width: 100%;
  max-width: 400px;
}

.login-container {
  background: var(--color-white);
  padding: 40px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

.welcome-text {
  text-align: center;
  margin-bottom: 30px;
}

.welcome-text h1 {
  font-family: 'Montserrat', sans-serif;
  font-size: 24px;
  color: var(--color-primary-dark);
  margin-bottom: 8px;
}

.welcome-text p {
  color: var(--color-text-light);
  font-size: 16px;
}

.tabs {
  display: flex;
  margin-bottom: 30px;
  border-bottom: 2px solid var(--color-background);
}

.tab-btn {
  flex: 1;
  padding: 15px;
  background: none;
  border: none;
  font-family: 'Montserrat', sans-serif;
  font-size: 16px;
  color: var(--color-text-light);
  cursor: pointer;
  transition: all 0.3s ease;
}

.tab-btn.active {
  color: var(--color-primary);
  border-bottom: 2px solid var(--color-primary);
  margin-bottom: -2px;
}

.form {
  display: none;
}

.form.active {
  display: block;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  margin-bottom: 8px;
  font-weight: 500;
}

.form-group input {
  width: 100%;
  padding: 12px;
  border: 2px solid var(--color-background);
  border-radius: var(--radius-sm);
  font-size: 16px;
  transition: border-color 0.3s ease;
}

.form-group input:focus {
  outline: none;
  border-color: var(--color-primary);
}

.password-input {
  position: relative;
}

.toggle-password {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--color-text-light);
  cursor: pointer;
  font-size: 14px;
  padding: 4px;
}

.form-options {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.remember-me {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
}

.remember-me input[type="checkbox"] {
  width: 16px;
  height: 16px;
  cursor: pointer;
}

.forgot-password {
  color: var(--color-secondary);
  text-decoration: none;
  font-size: 14px;
}

.forgot-password:hover {
  text-decoration: underline;
}

.btn {
  width: 100%;
  padding: 12px;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
}

.btn-primary {
  background: var(--color-primary);
  color: var(--color-white);
}

.btn-primary:hover {
  background: var(--color-primary-dark);
  transform: translateY(-2px);
}

.social-login {
  margin-top: 30px;
  text-align: center;
}

.social-login p {
  color: var(--color-text-light);
  margin-bottom: 15px;
  font-size: 14px;
}

.btn-google {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background: var(--color-white);
  border: 2px solid var(--color-background);
  color: var(--color-text);
}

.btn-google:hover {
  background: var(--color-background);
}

.btn-google img {
  width: 18px;
  height: 18px;
}

@media (max-width: 480px) {
  .login-container {
    padding: 20px;
  }

  .welcome-text h1 {
    font-size: 20px;
  }

  .form-options {
    flex-direction: column;
    gap: 15px;
    align-items: flex-start;
  }
}