:root {
  --primary-color: #4a6cf7;
  --secondary-color: #6278fa;
  --gray-light: #f8f9fa;
  --text-dark: #212529;
  --text-muted: #6c757d;
  --border-color: #e9ecef;
  --bg-color: #ffffff;
  --shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
  --hover-shadow: 0 10px 20px rgba(74, 108, 247, 0.15);
  --transition: all 0.3s ease;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
}

body {
  background-color: var(--gray-light);
  color: var(--text-dark);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.container {
  display: flex;
  width: 100%;
  max-width: 1200px;
  height: auto;
  min-height: 600px;
  margin: 2rem;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow);
  background-color: var(--bg-color);
}

.image-section {
  flex: 1;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  min-height: 600px;
}

.image-section img {
  position: absolute;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 2;
  opacity: 0.9;
  transition: var(--transition);
}

.image-section::before {
  content: '';
  position: absolute;
  width: 150%;
  height: 150%;
  background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0) 70%);
  top: -25%;
  left: -25%;
  animation: pulse 15s infinite alternate;
  z-index: 3;
}

@keyframes pulse {
  0% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.1);
  }
  100% {
    transform: scale(1);
  }
}

.form-section {
  flex: 1;
  padding: 3rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.brand {
  display: flex;
  align-items: center;
  margin-bottom: 2rem;
}

.brand-logo {
  width: 40px;
  height: 40px;
  margin-right: 10px;
  transition: var(--transition);
}

.brand:hover .brand-logo {
  transform: rotate(5deg);
}

.brand-name {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--text-dark);
  transition: var(--transition);
}

.brand:hover .brand-name {
  color: var(--primary-color);
}

h1 {
  font-size: 2.2rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--text-dark);
  letter-spacing: -0.5px;
  background: linear-gradient(90deg, var(--text-dark) 0%, var(--primary-color) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

p {
  color: var(--text-muted);
  margin-bottom: 2rem;
  font-size: 1.05rem;
}

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

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 600;
  color: var(--text-dark);
}

.input-group {
  position: relative;
}

.input-icon {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  transition: var(--transition);
}

.form-control {
  width: 100%;
  padding: 0.75rem 1rem 0.75rem 2.5rem;
  border: 1px solid var(--border-color);
  border-radius: 10px;
  font-size: 1rem;
  transition: var(--transition);
  background-color: rgba(248, 249, 250, 0.5);
}

.form-control:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(74, 108, 247, 0.2);
  background-color: white;
}

.form-control:focus + .input-icon {
  color: var(--primary-color);
}

.toggle-password {
  position: absolute;
  right: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  cursor: pointer;
  background: none;
  border: none;
  font-size: 1rem;
  transition: var(--transition);
}

.toggle-password:hover {
  color: var(--primary-color);
}

.forgot-password {
  text-align: right;
  margin-bottom: 1.5rem;
}

.forgot-password a {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 600;
  transition: var(--transition);
}

.forgot-password a:hover {
  color: var(--secondary-color);
  text-decoration: underline;
}

.btn {
  display: inline-block;
  padding: 0.85rem 1rem;
  border-radius: 10px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  text-align: center;
  text-decoration: none;
  border: none;
  width: 100%;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: white;
  box-shadow: 0 4px 6px rgba(74, 108, 247, 0.2);
  position: relative;
  overflow: hidden;
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--secondary-color), var(--primary-color));
  box-shadow: var(--hover-shadow);
  transform: translateY(-2px);
}

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

.btn-primary::after {
  content: '';
  position: absolute;
  width: 100%;
  height: 100%;
  top: 0;
  left: -100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: 0.5s;
}

.btn-primary:hover::after {
  left: 100%;
}

.divider {
  display: flex;
  align-items: center;
  margin: 2rem 0;
  color: var(--text-muted);
}

.divider::before, .divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: linear-gradient(to right, transparent, var(--border-color), transparent);
}

.divider span {
  padding: 0 1rem;
}

.social-login {
  display: flex;
  gap: 1rem;
}

.social-btn {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem;
  border-radius: 10px;
  border: 1px solid var(--border-color);
  background-color: white;
  color: var(--text-dark);
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.social-btn:hover {
  background-color: var(--gray-light);
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}

.social-btn i {
  margin-right: 0.5rem;
  font-size: 1.1rem;
}

.social-btn:nth-child(1) i {
  color: #DB4437;
}

.social-btn:nth-child(2) i {
  color: #000000;
}

.register-link {
  margin-top: 2rem;
  text-align: center;
  color: var(--text-muted);
}

.register-link a {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 600;
  transition: var(--transition);
  position: relative;
}

.register-link a::after {
  content: '';
  position: absolute;
  width: 100%;
  transform: scaleX(0);
  height: 1px;
  bottom: -2px;
  left: 0;
  background-color: var(--secondary-color);
  transform-origin: bottom right;
  transition: transform 0.3s ease-out;
}

.register-link a:hover {
  color: var(--secondary-color);
}

.register-link a:hover::after {
  transform: scaleX(1);
  transform-origin: bottom left;
}

@media (max-width: 1200px) {
  .container {
    max-width: 90%;
    margin: 1.5rem;
  }

  .form-section {
    padding: 2.5rem;
  }
}

@media (max-width: 992px) {
  .container {
    max-width: 95%;
    margin: 1rem;
  }

  .form-section {
    padding: 2rem;
  }
}

@media (max-width: 768px) {
  .container {
    flex-direction: column;
    margin: 1rem;
    min-height: auto;
    max-width: 500px;
  }

  .image-section {
    display: none;
  }

  .form-section {
    padding: 2rem 1.5rem;
  }
}

@media (max-width: 480px) {
  .container {
    margin: 0.5rem;
    border-radius: 12px;
  }

  .form-section {
    padding: 1.5rem 1rem;
  }

  .social-login {
    flex-direction: column;
  }

  h1 {
    font-size: 1.85rem;
  }

  .brand-name {
    font-size: 1.6rem;
  }
  
  p {
    font-size: 0.95rem;
  }
}

@media (min-width: 1200px) {
  .container {
    max-width: 1200px;
  }
}

@media (min-width: 769px) and (max-width: 1024px) {
  .image-section {
    display: flex;
    min-width: 45%;
  }
}

.rotating {
  animation: rotate 1s ease-in-out;
}

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

.form-control::placeholder {
  color: var(--text-muted);
  opacity: 0.7;
}

.container {
  backdrop-filter: blur(10px);
}