.card {
  background: var(--md-sys-color-surface);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-radius: var(--md-sys-shape-corner-large);
  box-shadow: var(--md-sys-elevation-level1);
  border: 1px solid var(--md-sys-color-outline-variant);
  overflow: hidden;
  transition: all var(--transition-medium) cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  --hover-scale: 1.02;
  --hover-shadow: var(--md-sys-elevation-level3);
  animation: slideUp 0.6s ease-out backwards;
}

.card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-primary);
  opacity: 0;
  transition: opacity var(--transition-medium) ease;
}

.card:hover {
  transform: translateY(-2px) scale(var(--hover-scale, 1));
  box-shadow: var(--hover-shadow);
}

.card:hover::before {
  opacity: 1;
}

.card:nth-child(1) {
  animation-delay: 0.1s;
}
.card:nth-child(2) {
  animation-delay: 0.2s;
}
.card:nth-child(3) {
  animation-delay: 0.3s;
}

.card-header {
  padding: 24px;
  display: flex;
  align-items: center;
  gap: 16px;
  background: var(--md-sys-color-surface-container-low);
  border-bottom: 1px solid var(--md-sys-color-outline-variant);
}

.card-header .material-icons {
  font-size: 28px;
  color: var(--md-sys-color-primary);
}

.card-header h2 {
  font-size: 20px;
  font-weight: 600;
  color: var(--md-sys-color-on-surface);
  flex: 1;
}

.card-content {
  padding: 24px;
}

.btn {
  padding: 14px 28px;
  border-radius: var(--md-sys-shape-corner-full);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: all var(--transition-medium) cubic-bezier(0.4, 0, 0.2, 1);
  text-decoration: none;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
  transform: translate(-50%, -50%);
  transition:
    width var(--transition-slow) ease,
    height var(--transition-slow) ease;
}

.btn:active::before {
  width: 300px;
  height: 300px;
}

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

.btn-primary {
  background: var(--md-sys-color-primary);
  color: var(--md-sys-color-on-primary);
  box-shadow: var(--md-sys-elevation-level1);
}

.btn-primary:hover:not(:disabled) {
  background: var(--gradient-primary);
  transform: translateY(-2px);
  box-shadow: var(--md-sys-elevation-level3);
}

.btn-secondary {
  background: var(--md-sys-color-secondary-container);
  color: var(--md-sys-color-on-secondary-container);
  border: 1px solid var(--md-sys-color-outline-variant);
}

.btn-secondary:hover:not(:disabled) {
  background: var(--md-sys-color-secondary);
  color: var(--md-sys-color-on-secondary);
  transform: translateY(-2px);
  box-shadow: var(--md-sys-elevation-level2);
}

.btn-text {
  background-color: transparent;
  color: var(--md-sys-color-primary);
  padding: 8px 16px;
}

.btn-text:hover:not(:disabled) {
  background-color: var(--md-sys-color-primary-container);
}

.button-group {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.input-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.input-label {
  font-size: 14px;
  font-weight: 500;
  color: var(--md-sys-color-on-surface);
  margin-left: 4px;
}

.text-field {
  padding: 16px;
  border: 2px solid var(--md-sys-color-outline-variant);
  border-radius: var(--md-sys-shape-corner-medium);
  background-color: var(--md-sys-color-surface-container-low);
  color: var(--md-sys-color-on-surface);
  font-size: 16px;
  transition: all var(--transition-fast) ease;
  position: relative;
}

.text-field:hover {
  border-color: var(--md-sys-color-outline);
  background-color: var(--md-sys-color-surface-container);
}

.text-field:focus {
  outline: none;
  border-color: var(--md-sys-color-primary);
  background-color: var(--md-sys-color-surface-container);
  box-shadow: 0 0 0 3px rgba(103, 80, 164, 0.15);
}

[data-theme="dark"] .text-field:focus {
  box-shadow: 0 0 0 3px rgba(208, 188, 255, 0.15);
}

.input-helper {
  font-size: 12px;
  color: var(--md-sys-color-on-surface-variant);
  margin-left: 4px;
}

.radio-group {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

.radio-item {
  display: flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
  user-select: none;
  padding: 8px 12px;
  border-radius: var(--md-sys-shape-corner-medium);
  transition: background-color var(--transition-fast) ease;
}

.radio-item:hover {
  background-color: var(--md-sys-color-primary-container);
}

.radio-item input[type="radio"] {
  display: none;
}

.radio-button {
  width: 20px;
  height: 20px;
  border: 2px solid var(--md-sys-color-outline);
  border-radius: 50%;
  position: relative;
  transition: all var(--transition-fast) ease;
}

.radio-button::after {
  content: "";
  width: 12px;
  height: 12px;
  background: var(--md-sys-color-primary);
  border-radius: 50%;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0);
  transition: transform var(--transition-fast)
    cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.radio-item input[type="radio"]:checked + .radio-button {
  border-color: var(--md-sys-color-primary);
}

.radio-item input[type="radio"]:checked + .radio-button::after {
  transform: translate(-50%, -50%) scale(1);
}

.checkbox-item {
  display: flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
  user-select: none;
  padding: 8px 12px;
  border-radius: var(--md-sys-shape-corner-medium);
  transition: background-color var(--transition-fast) ease;
}

.checkbox-item:hover {
  background-color: var(--md-sys-color-primary-container);
}

.checkbox-item input[type="checkbox"] {
  display: none;
}

.checkbox-button {
  width: 20px;
  height: 20px;
  border: 2px solid var(--md-sys-color-outline);
  border-radius: var(--md-sys-shape-corner-extra-small);
  position: relative;
  transition: all var(--transition-fast) ease;
}

.checkbox-button::after {
  content: "✓";
  color: var(--md-sys-color-on-primary);
  font-size: 14px;
  font-weight: bold;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0);
  transition: transform var(--transition-fast)
    cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.checkbox-item input[type="checkbox"]:checked + .checkbox-button {
  background: var(--md-sys-color-primary);
  border-color: var(--md-sys-color-primary);
}

.checkbox-item input[type="checkbox"]:checked + .checkbox-button::after {
  transform: translate(-50%, -50%) scale(1);
}

.theme-toggle {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--md-sys-color-surface-container);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast) ease;
  color: var(--md-sys-color-on-surface);
}

.theme-toggle:hover {
  background: var(--md-sys-color-primary-container);
  transform: scale(1.1);
}

.theme-toggle .material-icons {
  font-size: 20px;
  transition: transform var(--transition-medium) ease;
}

.theme-toggle:active .material-icons {
  transform: rotate(180deg);
}

.snackbar {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: var(--md-sys-color-inverse-surface);
  color: var(--md-sys-color-inverse-on-surface);
  border-radius: var(--md-sys-shape-corner-medium);
  box-shadow: var(--md-sys-elevation-level4);
  z-index: 2000;
  max-width: 560px;
  min-width: 344px;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-medium) cubic-bezier(0.4, 0, 0.2, 1);
}

.snackbar.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
  visibility: visible;
}

.snackbar.success {
  background: var(--md-sys-color-success);
  color: var(--md-sys-color-on-success);
}

.snackbar.error {
  background: var(--md-sys-color-error);
  color: var(--md-sys-color-on-error);
}

.snackbar.warning {
  background: var(--md-sys-color-warning);
  color: var(--md-sys-color-on-warning);
}

.snackbar.info {
  background: var(--md-sys-color-primary);
  color: var(--md-sys-color-on-primary);
}

.snackbar-content {
  display: flex;
  align-items: center;
  padding: 16px 20px;
  gap: 16px;
}

.snackbar-content span {
  flex: 1;
  font-size: 14px;
  font-weight: 500;
}

.snackbar-action {
  background: rgba(255, 255, 255, 0.2);
  border: none;
  color: inherit;
  cursor: pointer;
  padding: 8px;
  border-radius: 50%;
  transition: all var(--transition-fast) ease;
}

.snackbar-action:hover {
  background: rgba(255, 255, 255, 0.3);
  transform: scale(1.1);
}

.status-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px;
  border-radius: var(--md-sys-shape-corner-medium);
  background: var(--md-sys-color-surface-container);
  border: 1px solid var(--md-sys-color-outline-variant);
  transition: all var(--transition-fast) ease;
}

.status-item:hover {
  transform: translateX(4px);
  border-color: var(--md-sys-color-primary);
}

.status-icon {
  font-size: 20px;
  transition: transform var(--transition-fast) ease;
}

.status-item:hover .status-icon {
  transform: scale(1.1);
}

.status-icon.success {
  color: var(--md-sys-color-success);
}
.status-icon.error {
  color: var(--md-sys-color-error);
}
.status-icon.warning {
  color: var(--md-sys-color-warning);
}

.status-text {
  flex: 1;
  font-size: 14px;
  color: var(--md-sys-color-on-surface);
}

@media (prefers-contrast: high) {
  .card {
    border-width: 2px;
  }

  .btn {
    border: 2px solid currentColor;
  }

  .text-field {
    border-width: 3px;
  }
}