/* ===================================
 * MD3 Components
 * Buttons, Cards, Chips, FAB, Inputs
 * =================================== */

/* ===================================
 * State Layer Base (::before overlay)
 * Implements MD3 state layer pattern
 * =================================== */
.md-btn,
.md-icon-btn,
.md-chip,
.md-header__nav-item,
.md-drawer__item,
.md-pagination__item {
  position: relative;
  overflow: hidden;
  isolation: isolate;
}

.md-btn > *,
.md-icon-btn > *,
.md-chip > *,
.md-header__nav-item > *,
.md-drawer__item > *,
.md-pagination__item > * {
  position: relative;
  z-index: 1;
}

.md-btn::before,
.md-icon-btn::before,
.md-chip::before,
.md-header__nav-item::before,
.md-drawer__item::before,
.md-pagination__item::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: var(--_state-color, currentColor);
  opacity: 0;
  transition: opacity var(--md-sys-motion-duration-short) var(--md-sys-motion-easing-standard);
  pointer-events: none;
  z-index: 0;
}

.md-btn:hover::before,
.md-icon-btn:hover::before,
.md-chip:hover::before,
.md-header__nav-item:hover::before,
.md-drawer__item:hover::before,
.md-pagination__item:hover::before {
  opacity: var(--md-sys-state-hover-opacity);
}

.md-btn:focus-visible::before,
.md-icon-btn:focus-visible::before,
.md-chip:focus-visible::before,
.md-header__nav-item:focus-visible::before,
.md-drawer__item:focus-visible::before,
.md-pagination__item:focus-visible::before {
  opacity: var(--md-sys-state-focus-opacity);
}

.md-btn:active::before,
.md-icon-btn:active::before,
.md-chip:active::before,
.md-header__nav-item:active::before,
.md-drawer__item:active::before,
.md-pagination__item:active::before {
  opacity: var(--md-sys-state-pressed-opacity);
}

/* ===================================
 * Buttons
 * =================================== */

/* Filled Button */
.md-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 40px;
  padding: 0 24px;
  border-radius: var(--md-sys-shape-corner-full);
  font: var(--md-sys-typescale-label-large);
  cursor: pointer;
  border: none;
  --_state-color: var(--md-sys-color-on-surface);
}

.md-btn--filled {
  background: var(--md-sys-color-primary);
  color: var(--md-sys-color-on-primary);
  --_state-color: var(--md-sys-color-on-primary);
}

/* Filled Tonal Button */
.md-btn--tonal {
  background: var(--md-sys-color-secondary-container);
  color: var(--md-sys-color-on-secondary-container);
  --_state-color: var(--md-sys-color-on-secondary-container);
}

/* Outlined Button */
.md-btn--outlined {
  background: transparent;
  color: var(--md-sys-color-primary);
  border: 1px solid var(--md-sys-color-outline);
  --_state-color: var(--md-sys-color-primary);
}

/* Text Button */
.md-btn--text {
  background: transparent;
  color: var(--md-sys-color-primary);
  padding: 0 12px;
  --_state-color: var(--md-sys-color-primary);
}

/* Icon Button */
.md-icon-btn {
  width: 40px;
  height: 40px;
  border-radius: var(--md-sys-shape-corner-full);
  border: none;
  background: transparent;
  color: var(--md-sys-color-on-surface-variant);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  --_state-color: var(--md-sys-color-on-surface-variant);
}

.md-icon-btn--filled {
  background: var(--md-sys-color-primary);
  color: var(--md-sys-color-on-primary);
  --_state-color: var(--md-sys-color-on-primary);
}

.md-icon-btn--tonal {
  background: var(--md-sys-color-secondary-container);
  color: var(--md-sys-color-on-secondary-container);
  --_state-color: var(--md-sys-color-on-secondary-container);
}

.md-icon-btn--outlined {
  border: 1px solid var(--md-sys-color-outline);
  --_state-color: var(--md-sys-color-on-surface-variant);
}

/* ===================================
 * Cards
 * =================================== */

/* Filled Card */
.md-card {
  background: var(--md-sys-color-surface-container-low);
  border-radius: var(--md-sys-shape-corner-medium);
  padding: 16px;
}

/* Elevated Card */
.md-card--elevated {
  background: var(--md-sys-color-surface-container-low);
  box-shadow: var(--md-sys-elevation-1);
  transition: box-shadow var(--md-sys-motion-duration-short) var(--md-sys-motion-easing-standard);
}

.md-card--elevated:hover {
  box-shadow: var(--md-sys-elevation-2);
}

/* Outlined Card */
.md-card--outlined {
  background: var(--md-sys-color-surface);
  border: 1px solid var(--md-sys-color-outline-variant);
  transition: background-color var(--md-sys-motion-duration-short) var(--md-sys-motion-easing-standard);
}

.md-card--outlined:hover {
  background: var(--md-sys-color-surface-container-low);
}

/* Card Header */
.md-card__header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 12px;
}

.md-card__avatar {
  width: 40px;
  height: 40px;
  border-radius: var(--md-sys-shape-corner-full);
  object-fit: cover;
}

.md-card__title {
  font: var(--md-sys-typescale-title-medium);
  color: var(--md-sys-color-on-surface);
  margin: 0;
}

.md-card__subtitle {
  font: var(--md-sys-typescale-body-medium);
  color: var(--md-sys-color-on-surface-variant);
  margin: 0;
}

/* Card Content */
.md-card__content {
  font: var(--md-sys-typescale-body-medium);
  color: var(--md-sys-color-on-surface-variant);
}

/* Card Actions */
.md-card__actions {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--md-sys-color-outline-variant);
}

/* ===================================
 * Chips
 * =================================== */

/* Assist Chip */
.md-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 32px;
  padding: 0 16px;
  border-radius: var(--md-sys-shape-corner-small);
  font: var(--md-sys-typescale-label-large);
  border: 1px solid var(--md-sys-color-outline);
  background: transparent;
  color: var(--md-sys-color-on-surface-variant);
  cursor: pointer;
  text-decoration: none;
  --_state-color: var(--md-sys-color-on-surface-variant);
}

.md-chip .md-icon {
  font-size: 18px;
}

/* Filter Chip (Selected) */
.md-chip--selected {
  background: var(--md-sys-color-secondary-container);
  border-color: transparent;
  color: var(--md-sys-color-on-secondary-container);
  --_state-color: var(--md-sys-color-on-secondary-container);
}

/* Suggestion Chip */
.md-chip--suggestion {
  border-color: var(--md-sys-color-outline-variant);
}

/* Input Chip */
.md-chip--input {
  height: 32px;
  padding: 0 8px 0 12px;
}

.md-chip__remove {
  width: 18px;
  height: 18px;
  border-radius: var(--md-sys-shape-corner-full);
  border: none;
  background: transparent;
  color: inherit;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  margin-left: 4px;
  margin-right: -4px;
}

.md-chip__remove:hover {
  background: color-mix(in srgb, currentColor 16%, transparent);
}

/* ===================================
 * FAB (Floating Action Button)
 * =================================== */
.md-fab {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 56px;
  height: 56px;
  border-radius: var(--md-sys-shape-corner-large);
  background: var(--md-sys-color-primary-container);
  color: var(--md-sys-color-on-primary-container);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--md-sys-elevation-3);
  transition: box-shadow var(--md-sys-motion-duration-short) var(--md-sys-motion-easing-standard),
              transform var(--md-sys-motion-duration-short) var(--md-sys-motion-easing-standard);
  z-index: 100;
  opacity: 0;
  visibility: hidden;
}

.md-fab.visible {
  opacity: 1;
  visibility: visible;
}

.md-fab:hover {
  box-shadow: var(--md-sys-elevation-4);
}

.md-fab:active {
  transform: scale(0.96);
}

.md-fab .md-icon {
  font-size: 24px;
}

/* Extended FAB */
.md-fab--extended {
  width: auto;
  padding: 0 20px;
  gap: 12px;
}

.md-fab--extended span {
  font: var(--md-sys-typescale-label-large);
}

/* Small FAB */
.md-fab--small {
  width: 40px;
  height: 40px;
  border-radius: var(--md-sys-shape-corner-medium);
}

.md-fab--small .md-icon {
  font-size: 20px;
}

/* ===================================
 * Input Fields
 * =================================== */
.md-text-field {
  position: relative;
  width: 100%;
}

.md-text-field__input {
  width: 100%;
  height: 56px;
  padding: 20px 16px 8px;
  border: none;
  border-bottom: 2px solid var(--md-sys-color-on-surface-variant);
  border-radius: var(--md-sys-shape-corner-extra-small) var(--md-sys-shape-corner-extra-small) 0 0;
  background: var(--md-sys-color-surface-container);
  color: var(--md-sys-color-on-surface);
  font: var(--md-sys-typescale-body-large);
  transition: border-color var(--md-sys-motion-duration-short) var(--md-sys-motion-easing-standard);
}

.md-text-field__input:focus {
  outline: none;
  border-bottom-color: var(--md-sys-color-primary);
}

.md-text-field__label {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--md-sys-color-on-surface-variant);
  font: var(--md-sys-typescale-body-large);
  pointer-events: none;
  transition: all var(--md-sys-motion-duration-short) var(--md-sys-motion-easing-standard);
}

.md-text-field__input:focus + .md-text-field__label,
.md-text-field__input:not(:placeholder-shown) + .md-text-field__label {
  top: 12px;
  transform: translateY(0);
  font: var(--md-sys-typescale-body-small);
  color: var(--md-sys-color-primary);
}

/* Outlined Text Field */
.md-text-field--outlined .md-text-field__input {
  border: 1px solid var(--md-sys-color-outline);
  border-radius: var(--md-sys-shape-corner-extra-small);
  background: transparent;
  padding: 16px;
  height: 56px;
}

.md-text-field--outlined .md-text-field__input:focus {
  border-color: var(--md-sys-color-primary);
  border-width: 2px;
  margin: -1px;
}

.md-text-field--outlined .md-text-field__label {
  top: 50%;
  left: 12px;
  background: var(--md-sys-color-background);
  padding: 0 4px;
}

.md-text-field--outlined .md-text-field__input:focus + .md-text-field__label,
.md-text-field--outlined .md-text-field__input:not(:placeholder-shown) + .md-text-field__label {
  top: 0;
  transform: translateY(-50%);
}

/* ===================================
 * Material Icons
 * =================================== */
.md-icon {
  font-family: 'Material Symbols Rounded';
  font-weight: normal;
  font-style: normal;
  font-size: 24px;
  line-height: 1;
  letter-spacing: normal;
  text-transform: none;
  display: inline-block;
  white-space: nowrap;
  word-wrap: normal;
  direction: ltr;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  font-feature-settings: 'liga';
}

/* Icon sizes */
.md-icon--small {
  font-size: 18px;
}

.md-icon--large {
  font-size: 32px;
}

/* ===================================
 * Dividers
 * =================================== */
.md-divider {
  height: 1px;
  background: var(--md-sys-color-outline-variant);
  margin: 8px 0;
}

.md-divider--inset {
  margin-left: 16px;
  margin-right: 16px;
}

/* ===================================
 * Snackbar
 * =================================== */
.md-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);
  padding: 14px 24px;
  border-radius: var(--md-sys-shape-corner-small);
  box-shadow: var(--md-sys-elevation-3);
  font: var(--md-sys-typescale-body-medium);
  z-index: 2000;
  opacity: 0;
  transition: transform var(--md-sys-motion-duration-medium) var(--md-sys-motion-easing-emphasized),
              opacity var(--md-sys-motion-duration-medium) var(--md-sys-motion-easing-emphasized);
}

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

/* ===================================
 * Progress Indicator
 * =================================== */
.md-circular-progress {
  width: 48px;
  height: 48px;
  border: 4px solid var(--md-sys-color-surface-container);
  border-top-color: var(--md-sys-color-primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* ===================================
 * Badge
 * =================================== */
.md-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 16px;
  height: 16px;
  padding: 0 4px;
  border-radius: var(--md-sys-shape-corner-full);
  background: var(--md-sys-color-error);
  color: var(--md-sys-color-on-error);
  font: var(--md-sys-typescale-label-small);
}

/* ===================================
 * Search Dialog
 * =================================== */
.md-search-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 2000;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--md-sys-motion-duration-short) var(--md-sys-motion-easing-standard),
              visibility var(--md-sys-motion-duration-short);
}

.md-search-overlay.open {
  opacity: 1;
  visibility: visible;
}

.md-search-dialog {
  position: fixed;
  top: 15%;
  left: 50%;
  transform: translateX(-50%) scale(0.95);
  width: 560px;
  max-width: calc(100vw - 32px);
  max-height: 70vh;
  background: var(--md-sys-color-surface-container-low);
  border-radius: var(--md-sys-shape-corner-extra-large);
  box-shadow: var(--md-sys-elevation-3);
  z-index: 2001;
  display: flex;
  flex-direction: column;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--md-sys-motion-duration-short) var(--md-sys-motion-easing-standard),
              transform var(--md-sys-motion-duration-short) var(--md-sys-motion-easing-standard),
              visibility var(--md-sys-motion-duration-short);
}

.md-search-dialog.open {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) scale(1);
}

.md-search-dialog__header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 20px;
  border-bottom: 1px solid var(--md-sys-color-outline-variant);
}

.md-search-dialog__icon {
  font-size: 22px;
  color: var(--md-sys-color-on-surface-variant);
  flex-shrink: 0;
}

.md-search-dialog__input {
  flex: 1;
  border: none;
  background: transparent;
  font: var(--md-sys-typescale-body-large);
  color: var(--md-sys-color-on-surface);
  outline: none;
}

.md-search-dialog__input::placeholder {
  color: var(--md-sys-color-on-surface-variant);
  opacity: 0.7;
}

.md-search-dialog__body {
  flex: 1;
  overflow-y: auto;
  padding: 8px;
  min-height: 100px;
}

.md-search-dialog__empty {
  padding: 32px 16px;
  text-align: center;
  color: var(--md-sys-color-on-surface-variant);
  font: var(--md-sys-typescale-body-medium);
}

.md-search-result {
  display: block;
  padding: 12px 16px;
  border-radius: var(--md-sys-shape-corner-medium);
  text-decoration: none;
  transition: background-color var(--md-sys-motion-duration-short) var(--md-sys-motion-easing-standard);
}

.md-search-result:hover,
.md-search-result.active {
  background: var(--md-sys-color-surface-container);
  text-decoration: none;
}

.md-search-result__title {
  font: var(--md-sys-typescale-title-small);
  color: var(--md-sys-color-on-surface);
  margin-bottom: 4px;
}

.md-search-result__excerpt {
  font: var(--md-sys-typescale-body-small);
  color: var(--md-sys-color-on-surface-variant);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.md-search-result__excerpt mark {
  background: var(--md-sys-color-tertiary-container);
  color: var(--md-sys-color-on-tertiary-container);
  padding: 0 2px;
  border-radius: 2px;
}

.md-search-result__meta {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 4px;
  font: var(--md-sys-typescale-label-small);
  color: var(--md-sys-color-on-surface-variant);
  opacity: 0.7;
}

.md-search-dialog__footer {
  padding: 10px 20px;
  border-top: 1px solid var(--md-sys-color-outline-variant);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.md-search-dialog__hint {
  font: var(--md-sys-typescale-label-small);
  color: var(--md-sys-color-on-surface-variant);
}

.md-search-dialog__hint kbd {
  display: inline-block;
  padding: 1px 6px;
  border-radius: var(--md-sys-shape-corner-extra-small);
  border: 1px solid var(--md-sys-color-outline);
  background: var(--md-sys-color-surface-container);
  font: var(--md-sys-typescale-label-small);
  font-family: var(--md-sys-typescale-font-family-mono);
}

.md-search-dialog__count {
  font: var(--md-sys-typescale-label-small);
  color: var(--md-sys-color-on-surface-variant);
}