/* Reset e Base */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --primary-color: #2563eb;
  --primary-hover: #1d4ed8;
  --secondary-color: #64748b;
  --success-color: #10b981;
  --error-color: #ef4444;
  --warning-color: #f59e0b;
  --bg-color: #f8fafc;
  --card-bg: #ffffff;
  --border-color: #e2e8f0;
  --text-primary: #0f172a;
  --text-secondary: #64748b;
  --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background: var(--bg-color);
  color: var(--text-primary);
  line-height: 1.6;
}

/* Login */
.login-container {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.login-card {
  background: var(--card-bg);
  padding: 2.5rem;
  border-radius: 1rem;
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 400px;
}

.login-card h1 {
  font-size: 1.875rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  text-align: center;
  color: var(--text-primary);
}

.subtitle {
  text-align: center;
  color: var(--text-secondary);
  margin-bottom: 2rem;
  font-size: 0.875rem;
}

.login-form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.form-group label {
  font-weight: 500;
  font-size: 0.875rem;
  color: var(--text-primary);
}

.form-group input {
  padding: 0.75rem;
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  font-size: 1rem;
  transition: all 0.2s;
}

.form-group input:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.error-message {
  background: #fee;
  color: var(--error-color);
  padding: 0.75rem;
  border-radius: 0.5rem;
  font-size: 0.875rem;
  border: 1px solid var(--error-color);
}

/* Buttons */
.btn {
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: 0.5rem;
  font-size: 1rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

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

.btn-primary:hover:not(:disabled) {
  background: var(--primary-hover);
}

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

.btn-secondary:hover:not(:disabled) {
  background: #475569;
}

/* App Container */
.app-container {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.app-header {
  background: var(--card-bg);
  border-bottom: 1px solid var(--border-color);
  padding: 1rem 0;
  box-shadow: var(--shadow);
}

.header-content {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.header-content h1 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary-color);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.user-info {
  color: var(--text-secondary);
  font-size: 0.875rem;
}

/* Breadcrumb */
.breadcrumb {
  background: var(--card-bg);
  border-bottom: 1px solid var(--border-color);
  padding: 0.75rem 0;
}

.breadcrumb {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0.75rem 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.breadcrumb-item {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 0.875rem;
  padding: 0.25rem 0.5rem;
  border-radius: 0.25rem;
  transition: all 0.2s;
}

.breadcrumb-item:hover {
  background: var(--bg-color);
  color: var(--primary-color);
}

.breadcrumb-item.active {
  color: var(--text-primary);
  font-weight: 500;
}

.separator {
  color: var(--text-secondary);
}

/* Main Content */
.app-main {
  flex: 1;
  max-width: 1400px;
  width: 100%;
  margin: 0 auto;
  padding: 2rem 1.5rem;
}

.step-container h2 {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  color: var(--text-primary);
}

/* Loading */
.loading {
  text-align: center;
  padding: 3rem;
  color: var(--text-secondary);
  font-size: 1.125rem;
}

/* Models Grid */
.models-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
}

.model-card {
  background: var(--card-bg);
  padding: 1.5rem;
  border-radius: 0.75rem;
  border: 2px solid var(--border-color);
  cursor: pointer;
  transition: all 0.2s;
}

.model-card:hover {
  border-color: var(--primary-color);
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.model-card h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.model-code {
  font-size: 0.875rem;
  color: var(--primary-color);
  font-family: monospace;
  margin-bottom: 0.5rem;
}

.model-description {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* Components Grid */
.components-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1.5rem;
}

.component-card {
  background: var(--card-bg);
  padding: 1.5rem;
  border-radius: 0.75rem;
  border: 2px solid var(--border-color);
  cursor: pointer;
  transition: all 0.2s;
  text-align: center;
}

.component-card:hover {
  border-color: var(--primary-color);
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.component-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto 1rem;
  border-radius: 0.5rem;
  overflow: hidden;
  background: var(--bg-color);
}

.component-icon img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.component-card h3 {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.component-code {
  font-size: 0.75rem;
  color: var(--text-secondary);
  font-family: monospace;
}

/* Materials Section */
.materials-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
  gap: 1rem;
}

.materials-stats {
  display: flex;
  gap: 1.5rem;
}

.stat {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.stat strong {
  color: var(--primary-color);
  font-size: 1.125rem;
}

/* Filters */
.filters-bar {
  background: var(--card-bg);
  padding: 1.5rem;
  border-radius: 0.75rem;
  margin-bottom: 1.5rem;
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  border: 1px solid var(--border-color);
}

.search-box {
  flex: 1;
  min-width: 250px;
}

.search-box input {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  font-size: 1rem;
}

.search-box input:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.filter-buttons {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.filter-btn {
  padding: 0.75rem 1.25rem;
  border: 1px solid var(--border-color);
  background: var(--card-bg);
  border-radius: 0.5rem;
  cursor: pointer;
  font-size: 0.875rem;
  transition: all 0.2s;
  font-weight: 500;
}

.filter-btn:hover {
  border-color: var(--primary-color);
  color: var(--primary-color);
}

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

/* Materials List */
.materials-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.material-item {
  background: var(--card-bg);
  padding: 1.25rem;
  border-radius: 0.75rem;
  border: 2px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  transition: all 0.2s;
}

.material-item.assigned {
  border-color: var(--success-color);
  background: rgba(16, 185, 129, 0.05);
}

.material-info {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex: 1;
}

.material-icon {
  width: 60px;
  height: 60px;
  border-radius: 0.5rem;
  overflow: hidden;
  background: var(--bg-color);
  flex-shrink: 0;
}

.material-icon img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.material-details {
  flex: 1;
}

.material-details h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
  color: var(--text-primary);
}

.material-code {
  font-size: 0.75rem;
  color: var(--primary-color);
  font-family: monospace;
  margin-bottom: 0.125rem;
}

.material-category {
  font-size: 0.75rem;
  color: var(--text-secondary);
  text-transform: uppercase;
}

.material-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.status-text {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  min-width: 100px;
}

.material-item.assigned .status-text {
  color: var(--success-color);
}

/* Toggle Switch */
.toggle-switch {
  position: relative;
  display: inline-block;
  width: 50px;
  height: 28px;
}

.toggle-switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.toggle-slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--border-color);
  transition: 0.3s;
  border-radius: 28px;
}

.toggle-slider:before {
  position: absolute;
  content: "";
  height: 20px;
  width: 20px;
  left: 4px;
  bottom: 4px;
  background-color: white;
  transition: 0.3s;
  border-radius: 50%;
}

input:checked + .toggle-slider {
  background-color: var(--success-color);
}

input:checked + .toggle-slider:before {
  transform: translateX(22px);
}

input:disabled + .toggle-slider {
  opacity: 0.5;
  cursor: not-allowed;
}

/* No Results */
.no-results {
  text-align: center;
  padding: 3rem;
  color: var(--text-secondary);
  font-size: 1rem;
}

/* Notifications */
.notification {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  padding: 1rem 1.5rem;
  border-radius: 0.5rem;
  box-shadow: var(--shadow-lg);
  font-weight: 500;
  z-index: 1000;
  animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
  from {
    transform: translateX(400px);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

.notification.success {
  background: var(--success-color);
  color: white;
}

.notification.error {
  background: var(--error-color);
  color: white;
}

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

/* Responsive */
@media (max-width: 768px) {
  .header-content {
    flex-direction: column;
    gap: 1rem;
  }

  .materials-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .filters-bar {
    flex-direction: column;
  }

  .search-box {
    min-width: 100%;
  }

  .material-item {
    flex-direction: column;
    align-items: flex-start;
  }

  .material-actions {
    width: 100%;
    justify-content: space-between;
  }

  .models-grid {
    grid-template-columns: 1fr;
  }

  .components-grid {
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  }

  .notification {
    left: 1rem;
    right: 1rem;
  }
}

@media (max-width: 480px) {
  .app-main {
    padding: 1rem;
  }

  .login-card {
    padding: 1.5rem;
  }

  .component-icon {
    width: 60px;
    height: 60px;
  }
}