.preferences-container {
  max-width: 1200px;
  min-height: 100vh;
  margin: 2rem auto;
  padding: 0 1rem;
}

.hero {
  padding: 3.8rem 1rem 1rem 1rem;
  text-align: center;
  background: var(--gradient-bg);
  border-bottom: var(--border-thin);
  position: relative;
  overflow: hidden;
  animation: titleGlow 3s ease-in-out infinite alternate;
}

.hero h1 {
  font-family: var(--my-font);
  font-size: var(--font-size-xxl);
  color: var(--text-color-default);
}

.hero p {
  font-size: var(--font-size-md);
  color: var(--text-color-default);
  max-width: 600px;
  margin: 0 auto;
}

.preferences-grid {
  display: grid;
  gap: 2rem;
  margin-bottom: 2rem;
}

.preference-section {
  background: var(--secondary-bg);
  border-radius: var(--border-radius-default);
  border: var(--border-thin);
  padding: 1.5rem;
}

.section-header {
  display: flex;
  align-items: center;
  margin-bottom: 1rem;
}

.section-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--border-radius-default);
  background: var(--content-bg);
  border: var(--border-thin);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-right: 1rem;
  font-size: 1.2rem;
}

.section-title {
  font-family: var(--my-font);
  font-size: var(--font-size-md);
  color: var(--accent-color);
}

.section-desc {
  color: var(--text-color-default);
  font-size: var(--font-size-sm);
  margin-bottom: 1.5rem;
}

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

.form-label {
  display: block;
  color: var(--accent-color);
  margin-bottom: 0.5rem;
  font-size: var(--font-size-sm);
}

.form-select,
.form-input {
  width: 100%;
  padding: 0.75rem 1rem;
  background: var(--content-bg);
  border: var(--border-thin);
  border-radius: var(--border-radius-default);
  color: var(--accent-color);
  font-size: 1rem;
  transition: var(--timing-normal);
}

.form-select:focus,
.form-input:focus {
  outline: none;
}

.theme-preview-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: 0.75rem;
  margin-top: 1rem;
}

.theme-option {
  position: relative;
  border-radius: var(--border-radius-default);
  padding: 0.75rem;
  border: 2px solid transparent;
  transition: var(--timing-normal);
  text-align: center;
  cursor: pointer;
}

.theme-option:hover {
  transform: var(--translateY-up);
  background: var(--accent-overlay);
}

.theme-option.selected {
  background: var(--accent-overlay);
  border: var(--border-thin);
}

.theme-preview {
  width: 100%;
  height: 60px;
  border-radius: var(--border-radius-default);
  border: var(--border-thin);
  margin-bottom: 0.5rem;
  position: relative;
  overflow: hidden;
  cursor: pointer;
}

.theme-name {
  font-size: 0.8rem;
  color: var(--text-color-default);
  cursor: pointer;
}

.theme-default {
  background: linear-gradient(135deg, #0c0c0c, #141414);
}

.theme-dark-blue {
  background: linear-gradient(135deg, #1c1f27, #1a2635);
}

.theme-dark-red {
  background: linear-gradient(135deg, #160f0f, #2e1616);
}

.theme-dark-purple {
  background: linear-gradient(135deg, #11051a, #2c162e);
}

.theme-dark-green {
  background: linear-gradient(135deg, #051a08, #162e17);
}

.theme-dark-yellow {
  background: linear-gradient(135deg, #1a1a05, #2e2e16);
}

.theme-modern-white {
  background: linear-gradient(135deg, #ffffff, #f8fafc);
}

.theme-white-blue {
  background: linear-gradient(135deg, #ffffff, #dbeafe);
}

.theme-white-red {
  background: linear-gradient(135deg, #ffffff, #fecaca);
}

.theme-white-purple {
  background: linear-gradient(135deg, #ffffff, #e9d5ff);
}

.theme-white-green {
  background: linear-gradient(135deg, #ffffff, #dcfce7);
}

.theme-white-yellow {
  background: linear-gradient(135deg, #ffffff, #fef3c7);
}

.toggle-switch {
  position: relative;
  display: inline-block;
  width: 60px;
  height: 34px;
}

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

.slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--primary-bg);
  border: var(--border-thin);
  transition: var(--timing-normal);
  border-radius: var(--border-radius-default);
  overflow: hidden;
}

.slider:before {
  position: absolute;
  content: "";
  height: 26px;
  width: 26px;
  left: 4px;
  bottom: 3px;
  background: var(--accent-color);
  transition: var(--timing-normal);
  border-radius: var(--border-radius-default);
}

input:checked + .slider {
  background: var(--btn-bg);
}

input:checked + .slider:before {
  transform: translateX(26px);
}

.setting-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem 0;
  border-top: var(--border-thin);
}

.setting-info h4 {
  color: var(--accent-color);
  margin-bottom: 0.25rem;
}

.setting-info p {
  color: var(--text-color-default);
  font-size: 0.9rem;
}

.save-section {
  background: var(--secondary-bg);
  text-align: center;
}

.clear-btn,
.save-btn {
  padding: 0.75rem;
  border-radius: var(--border-radius-default);
  font-size: 1rem;
  cursor: pointer;
  transition: var(--timing-normal);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.preferences-actions {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.clear-btn {
  border: 1px solid var(--error);
  color: var(--error);
}

.save-btn {
  border: 1px solid var(--success);
  color: var(--success);
}

.clear-btn,
.save-btn {
  flex: 1;
}

.save-status {
  position: fixed;
  top: 4rem;
  right: 1rem;
  padding: 1rem;
  border-radius: var(--border-radius-default);
  z-index: 1;
  max-width: 300px;
  animation: fadeIn var(--timing-normal);
}

.save-status.hide {
  animation: slideInRight var(--timing-normal);
}

.save-status.success {
  background: var(--success-bg);
  border: 1px solid var(--success);
  color: var(--success);
}

.save-status.error {
  background: var(--error-bg);
  border: 1px solid var(--error);
  color: var(--error);
}

@media (max-width: 768px) {
  .hero h1 {
    font-size: 2rem;
  }

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

  .theme-preview-grid {
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
  }
}