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

:root {
  --primary-color: #ff6b9d;
  --primary-dark: #e55a8a;
  --secondary-color: #c44569;
  --accent-color: #f8b500;
  --bg-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #ff6b9d 100%);
  --bg-light: #f8f9fa;
  --text-dark: #2d3436;
  --text-light: #636e72;
  --border-color: #dfe6e9;
  --error-color: #e74c3c;
  --success-color: #00b894;
  --shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
  --shadow-hover: 0 15px 50px rgba(0, 0, 0, 0.15);
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: var(--bg-gradient);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  position: relative;
  overflow-x: hidden;
}

body::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(circle at 20% 50%, rgba(255, 107, 157, 0.3) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(118, 75, 162, 0.3) 0%, transparent 50%);
  pointer-events: none;
}

.login-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  max-width: 1200px;
  width: 100%;
  background: rgba(255, 255, 255, 0.95);
  border-radius: 30px;
  box-shadow: var(--shadow-hover);
  overflow: hidden;
  position: relative;
  z-index: 1;
  animation: fadeInUp 0.6s ease-out;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.login-box {
  padding: 50px 40px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.logo-section {
  text-align: center;
  margin-bottom: 40px;
}

.logo-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto 20px;
  background: var(--bg-gradient);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
}

.logo-icon i {
  font-size: 36px;
  color: white;
}

.logo-section h1 {
  font-size: 32px;
  color: var(--text-dark);
  margin-bottom: 8px;
  font-weight: 700;
}

.tagline {
  color: var(--text-light);
  font-size: 14px;
  font-weight: 500;
}

.login-form {
  margin-top: 30px;
}

.form-group {
  margin-bottom: 24px;
  position: relative;
}

.form-group label {
  display: block;
  margin-bottom: 8px;
  color: var(--text-dark);
  font-weight: 600;
  font-size: 14px;
}

.form-group label i {
  margin-right: 8px;
  color: var(--primary-color);
}

.form-group input[type="email"],
.form-group input[type="password"] {
  width: 100%;
  padding: 14px 16px;
  border: 2px solid var(--border-color);
  border-radius: 12px;
  font-size: 15px;
  transition: all 0.3s ease;
  background: var(--bg-light);
  color: var(--text-dark);
}

.form-group input:focus {
  outline: none;
  border-color: var(--primary-color);
  background: white;
  box-shadow: 0 0 0 4px rgba(255, 107, 157, 0.1);
}

.form-group input:invalid:not(:placeholder-shown) {
  border-color: var(--error-color);
}

.password-input-wrapper {
  position: relative;
}

.toggle-password {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--text-light);
  cursor: pointer;
  padding: 8px;
  transition: color 0.3s ease;
}

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

.error-text {
  display: block;
  color: var(--error-color);
  font-size: 12px;
  margin-top: 6px;
  min-height: 18px;
}

.remember-forgot {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
  font-size: 14px;
}

.remember {
  display: flex;
  align-items: center;
  cursor: pointer;
  color: var(--text-dark);
}

.remember input[type="checkbox"] {
  width: 18px;
  height: 18px;
  margin-right: 8px;
  cursor: pointer;
  accent-color: var(--primary-color);
}

.forgot-password {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s ease;
}

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

.btn-login {
  width: 100%;
  padding: 16px;
  background: var(--bg-gradient);
  color: white;
  border: none;
  border-radius: 12px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow);
}

.btn-login:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

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

.btn-login.loading {
  pointer-events: none;
}

.btn-login.loading .btn-text {
  opacity: 0;
}

.btn-login.loading .btn-loader {
  display: inline-block;
}

.btn-loader {
  display: none;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 20px;
  height: 20px;
  border: 3px solid rgba(255, 255, 255, 0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to {
    transform: translate(-50%, -50%) rotate(360deg);
  }
}

.divider {
  text-align: center;
  margin: 30px 0;
  position: relative;
  color: var(--text-light);
  font-size: 14px;
}

.divider::before,
.divider::after {
  content: '';
  position: absolute;
  top: 50%;
  width: 40%;
  height: 1px;
  background: var(--border-color);
}

.divider::before {
  left: 0;
}

.divider::after {
  right: 0;
}

.social-login {
  display: flex;
  gap: 12px;
  margin-bottom: 24px;
}

.social-btn {
  flex: 1;
  padding: 12px;
  border: 2px solid var(--border-color);
  border-radius: 12px;
  background: white;
  cursor: pointer;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-dark);
}

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

.social-btn.google:hover {
  border-color: #db4437;
  color: #db4437;
}

.social-btn.facebook:hover {
  border-color: #4267B2;
  color: #4267B2;
}

.social-btn.apple:hover {
  border-color: #000;
  color: #000;
}

.social-btn i {
  font-size: 18px;
}

.error-message {
  text-align: center;
  color: var(--error-color);
  font-size: 14px;
  min-height: 20px;
  margin-bottom: 16px;
  font-weight: 500;
}

.signup-link {
  text-align: center;
  margin-top: 20px;
  color: var(--text-light);
  font-size: 14px;
}

.signup-link a {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 600;
  transition: color 0.3s ease;
}

.signup-link a:hover {
  color: var(--primary-dark);
  text-decoration: underline;
}

.illustration-section {
  background: var(--bg-gradient);
  padding: 60px 40px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.floating-hearts {
  position: relative;
  width: 100%;
  height: 300px;
  margin-bottom: 40px;
}

.heart {
  position: absolute;
  font-size: 40px;
  animation: float 6s ease-in-out infinite;
  opacity: 0.8;
  animation-delay: var(--delay);
}

@keyframes float {
  0%, 100% {
    transform: translateY(0) translateX(0) rotate(0deg);
    opacity: 0.8;
  }
  25% {
    transform: translateY(-30px) translateX(20px) rotate(10deg);
    opacity: 1;
  }
  50% {
    transform: translateY(-60px) translateX(-15px) rotate(-10deg);
    opacity: 0.9;
  }
  75% {
    transform: translateY(-30px) translateX(10px) rotate(5deg);
    opacity: 1;
  }
}

.heart:nth-child(1) { left: 10%; top: 20%; }
.heart:nth-child(2) { left: 70%; top: 10%; }
.heart:nth-child(3) { left: 30%; top: 50%; }
.heart:nth-child(4) { left: 80%; top: 60%; }
.heart:nth-child(5) { left: 50%; top: 30%; }
.heart:nth-child(6) { left: 20%; top: 70%; }

.welcome-text {
  text-align: center;
  color: white;
  z-index: 1;
}

.welcome-text h2 {
  font-size: 32px;
  margin-bottom: 12px;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.welcome-text p {
  font-size: 16px;
  opacity: 0.95;
  line-height: 1.6;
}

/* Responsive Design */
@media (max-width: 968px) {
  .login-container {
    grid-template-columns: 1fr;
    max-width: 500px;
  }

  .illustration-section {
    display: none;
  }

  .login-box {
    padding: 40px 30px;
  }
}

@media (max-width: 480px) {
  .login-box {
    padding: 30px 20px;
  }

  .logo-section h1 {
    font-size: 28px;
  }

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

  .social-btn span {
    display: none;
  }
}

/* Animaciones adicionales */
@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-10px); }
  75% { transform: translateX(10px); }
}

.form-group.error input {
  animation: shake 0.4s ease-in-out;
  border-color: var(--error-color);
}