/* Reset and base styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html, body {
  height: 100%;
  width: 100%;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
  background: linear-gradient(135deg, #4285F4 0%, #5A9FFF 50%, #4285F4 100%);
  min-height: 100vh;
  padding: 20px 0;
}

.container {
  max-width: 700px;
  margin: 0 auto;
  padding: 20px;
}

/* Main Card */
.main-card {
  background: white;
  border-radius: 20px;
  padding: 30px;
  box-shadow: 0 20px 40px rgba(66, 133, 244, 0.2);
  border: none;
  margin-bottom: 80px;
}

/* Header Section */
.header-section {
  background: linear-gradient(135deg, #4285F4, #5A9FFF);
  border-radius: 15px;
  padding: 25px;
  margin-bottom: 25px;
  text-align: center;
}

.logo-container {
  margin-bottom: 20px;
  display: flex;
  justify-content: center;
  align-items: center;
}

.logo {
  max-width: 120px;
  height: auto;
  border-radius: 50%;
  background: white;
  padding: 15px;
  box-shadow: 0 8px 25px rgba(255, 255, 255, 0.3);
  transition: transform 0.3s ease;
  display: block;
}

.logo:hover {
  transform: scale(1.05);
}

.header-section h1 {
  font-size: 1.4rem;
  font-weight: 600;
  color: white;
  margin: 0;
  line-height: 1.4;
}

.highlight {
  color: white;
  font-weight: 700;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

/* Category Section */
.category-section {
  margin-bottom: 25px;
}

.category-btn {
  width: 100%;
  height: 60px;
  border-radius: 15px;
  border: none;
  font-weight: 600;
  font-size: 1rem;
  transition: all 0.3s ease;
  color: #2d3748;
}

.category-btn.divertido {
  background: #E3F2FD;
  border: 2px solid #4285F4;
}

.category-btn.profesional {
  background: #E3F2FD;
  border: 2px solid #4285F4;
}

.category-btn.magico {
  background: #E3F2FD;
  border: 2px solid #4285F4;
}

.category-btn.domain-hack {
  background: #E3F2FD;
  border: 2px solid #4285F4;
}

.category-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(66, 133, 244, 0.3);
  background: #BBDEFB;
}

.category-btn.active {
  background: #4285F4 !important;
  color: white !important;
  box-shadow: 0 8px 20px rgba(66, 133, 244, 0.4);
}

/* Instructions Section */
.instructions-section {
  background: #E3F2FD;
  border: 2px solid #4285F4;
  border-radius: 15px;
  padding: 20px;
  margin-bottom: 25px;
  text-align: center;
}

.instructions-section p {
  margin: 0;
  font-size: 1rem;
  color: #2d3748;
  line-height: 1.4;
}

/* Input Section */
.input-section {
  margin-bottom: 25px;
}

.keyword-input {
  height: 60px;
  border-radius: 15px;
  border: 2px solid #d1d5db;
  font-size: 1.1rem;
  padding: 15px 20px;
  background: white;
  color: #6b7280;
  transition: all 0.3s ease;
}

.keyword-input:focus {
  outline: none;
  border-color: #4285F4;
  box-shadow: 0 0 0 3px rgba(66, 133, 244, 0.3);
  color: #2d3748;
}

.keyword-input::placeholder {
  color: #9ca3af;
}

/* Action Section */
.action-section {
  margin-bottom: 25px;
}

.action-btn {
  width: 100%;
  height: 50px;
  border-radius: 12px;
  border: none;
  font-weight: 600;
  font-size: 0.9rem;
  transition: all 0.3s ease;
  color: #2d3748;
}

.action-btn.enviar {
  background: #4285F4;
  color: white;
}

.action-btn.borrar {
  background: #E3F2FD;
  border: 2px solid #4285F4;
  color: #4285F4;
}

.action-btn.copiar {
  background: #5A9FFF;
  color: white;
}

.action-btn.descargar {
  background: #BBDEFB;
  color: #4285F4;
  border: 2px solid #4285F4;
}

.action-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 15px rgba(0, 0, 0, 0.15);
  filter: brightness(1.05);
}

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

/* Results Section */
.results-section {
  background: linear-gradient(135deg, #E3F2FD, #BBDEFB);
  border: 2px solid #4285F4;
  border-radius: 15px;
  padding: 20px;
  min-height: 100px;
}

.domain-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.domain-item {
  background: rgba(255, 255, 255, 0.8);
  padding: 15px 20px;
  border-radius: 10px;
  font-weight: 600;
  color: #2d3748;
  transition: all 0.3s ease;
  cursor: pointer;
  border: 2px solid transparent;
}

.domain-item:hover {
  background: white;
  transform: translateX(5px);
  border-color: #4285F4;
  box-shadow: 0 4px 15px rgba(66, 133, 244, 0.2);
}

.domain-item.copied {
  background: #E3F2FD;
  border-color: #4285F4;
  color: #4285F4;
}

/* Loading Animation */
.loading {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 80px;
  color: #2d3748;
  font-weight: 600;
}

.loading::after {
  content: '';
  width: 20px;
  height: 20px;
  border: 2px solid transparent;
  border-top: 2px solid #2d3748;
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin-left: 10px;
}

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

/* Footer */
.footer {
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  border-top: 1px solid rgba(0, 0, 0, 0.1);
  font-weight: 500;
  color: #4a5568;
  font-size: 0.9rem;
}

.footer a {
  color: #667eea;
  text-decoration: none;
  font-weight: 600;
  transition: color 0.3s ease;
}

.footer a:hover {
  color: #764ba2;
  text-decoration: underline;
}

/* Responsive Design */
@media (max-width: 768px) {
  .container {
    padding: 10px;
  }
  
  .main-card {
    padding: 20px;
  }
  
  .logo {
    max-width: 100px;
  }
  
  .header-section h1 {
    font-size: 1.2rem;
  }
  
  .category-btn {
    height: 50px;
    font-size: 0.9rem;
  }
  
  .keyword-input {
    height: 50px;
    font-size: 1rem;
  }
  
  .action-btn {
    height: 45px;
    font-size: 0.8rem;
  }
}

/* Animation for domain appearance */
.domain-item {
  animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
  0% {
    opacity: 0;
    transform: translateX(-20px);
  }
  100% {
    opacity: 1;
    transform: translateX(0);
  }
}