/* =========================================================================
   components.css — MD3 component library (tokens only, no hardcoded colors)
   Order: buttons, icon-buttons, cards, text-fields, chips, lists, divider,
          badges, switch, checkbox, radio, snackbar, drawer, tabs
   ========================================================================= */

/* ── Buttons ────────────────────────────────────────────── */
.md-button {
  position: relative; display: inline-flex; align-items: center; justify-content: center;
  gap: 8px; min-height: 40px; padding: 0 24px;
  border: 0; cursor: pointer;
  border-radius: var(--md-sys-shape-corner-full, 9999px);
  font-family: var(--md-sys-typescale-font);
  font-size: var(--md-sys-typescale-label-large-size);
  font-weight: var(--md-sys-typescale-label-large-weight);
  line-height: var(--md-sys-typescale-label-large-line-height);
  letter-spacing: var(--md-sys-typescale-label-large-tracking);
  transition: background-color var(--md-sys-motion-duration-short4) var(--md-sys-motion-easing-standard),
              box-shadow var(--md-sys-motion-duration-short4) var(--md-sys-motion-easing-standard);
  text-decoration: none; user-select: none; white-space: nowrap;
}
.md-button::before {
  content: ""; position: absolute; inset: 0; border-radius: inherit;
  background: currentColor; opacity: 0; pointer-events: none;
  transition: opacity var(--md-sys-motion-duration-short4) var(--md-sys-motion-easing-standard);
}
.md-button:hover::before       { opacity: var(--md-sys-state-hover-opacity); }
.md-button:focus-visible::before { opacity: var(--md-sys-state-focus-opacity); }
.md-button:active::before      { opacity: var(--md-sys-state-pressed-opacity); }
.md-button:disabled, .md-button[aria-disabled="true"] { cursor: not-allowed; opacity: 0.38; pointer-events: none; }

.md-button--filled   { background: var(--md-sys-color-primary); color: var(--md-sys-color-on-primary); }
.md-button--filled:hover   { color: var(--md-sys-color-on-primary); text-decoration: none; }
.md-button--tonal    { background: var(--md-sys-color-secondary-container); color: var(--md-sys-color-on-secondary-container); }
.md-button--outlined { background: transparent; color: var(--md-sys-color-primary); border: 1px solid var(--md-sys-color-outline); }
.md-button--text     { background: transparent; color: var(--md-sys-color-primary); padding: 0 12px; }
.md-button--elevated { background: var(--md-sys-color-surface-container-low); color: var(--md-sys-color-primary); box-shadow: var(--md-sys-elevation-level1); }
.md-button--elevated:hover { box-shadow: var(--md-sys-elevation-level2); }

.md-button--xs { min-height: 32px; padding: 0 16px; font-size: .8125rem; }
.md-button--sm { min-height: 36px; padding: 0 18px; }
.md-button--lg { min-height: 48px; padding: 0 28px; font-size: 1rem; }
.md-button--xl { min-height: 56px; padding: 0 32px; font-size: 1.125rem; }
.md-button--full { width: 100%; }

/* ── Icon buttons ───────────────────────────────────────── */
.md-icon-button {
  position: relative; display: inline-flex; align-items: center; justify-content: center;
  width: 40px; height: 40px;
  border: 0; cursor: pointer;
  border-radius: var(--md-sys-shape-corner-full, 9999px);
  color: var(--md-sys-color-on-surface-variant);
  background: transparent;
  transition: background-color var(--md-sys-motion-duration-short4) var(--md-sys-motion-easing-standard);
}
.md-icon-button::before {
  content: ""; position: absolute; inset: 0; border-radius: inherit;
  background: currentColor; opacity: 0; pointer-events: none;
  transition: opacity var(--md-sys-motion-duration-short4);
}
.md-icon-button:hover::before       { opacity: var(--md-sys-state-hover-opacity); }
.md-icon-button:focus-visible::before { opacity: var(--md-sys-state-focus-opacity); }
.md-icon-button:active::before      { opacity: var(--md-sys-state-pressed-opacity); }
.md-icon-button--standard     { color: var(--md-sys-color-on-surface-variant); }
.md-icon-button--filled       { background: var(--md-sys-color-primary); color: var(--md-sys-color-on-primary); }
.md-icon-button--filled-tonal { background: var(--md-sys-color-secondary-container); color: var(--md-sys-color-on-secondary-container); }
.md-icon-button--outlined     { border: 1px solid var(--md-sys-color-outline); color: var(--md-sys-color-on-surface-variant); }

/* ── Cards ──────────────────────────────────────────────── */
.md-card {
  position: relative;
  display: flex; flex-direction: column;
  border-radius: var(--md-sys-shape-corner-medium, 12px);
  background: var(--md-sys-color-surface-container-low);
  color: var(--md-sys-color-on-surface);
  overflow: hidden;
}
.md-card--outlined {
  background: var(--md-sys-color-surface);
  border: 1px solid var(--md-sys-color-outline-variant);
  transition:
    border-color var(--md-sys-motion-duration-short4) var(--md-sys-motion-easing-standard),
    box-shadow   var(--md-sys-motion-duration-medium1) var(--md-sys-motion-easing-emphasized),
    transform    var(--md-sys-motion-duration-medium1) var(--md-sys-motion-easing-emphasized);
}
.md-card--elevated {
  background: var(--md-sys-color-surface-container-low);
  box-shadow: var(--md-sys-elevation-level1);
  transition:
    box-shadow var(--md-sys-motion-duration-medium1) var(--md-sys-motion-easing-emphasized),
    transform  var(--md-sys-motion-duration-medium1) var(--md-sys-motion-easing-emphasized);
}
.md-card--elevated:hover { box-shadow: var(--md-sys-elevation-level2); transform: translateY(-2px); }
.md-card--interactive { cursor: pointer; will-change: transform; }
.md-card--interactive::before {
  content: ""; position: absolute; inset: 0;
  background: currentColor; opacity: 0; pointer-events: none;
  transition: opacity var(--md-sys-motion-duration-short4) var(--md-sys-motion-easing-standard);
}
.md-card--interactive:hover::before        { opacity: var(--md-sys-state-hover-opacity); }
.md-card--interactive:focus-within::before { opacity: var(--md-sys-state-focus-opacity); }
.md-card--interactive:active::before       { opacity: var(--md-sys-state-pressed-opacity); }
.md-card--interactive:hover {
  transform: translateY(-3px);
  box-shadow: var(--md-sys-elevation-level2);
  border-color: var(--md-sys-color-outline);
}
.md-card--interactive:active { transform: translateY(-1px) scale(0.995); transition-duration: var(--md-sys-motion-duration-short2); }
.md-card__media { width: 100%; aspect-ratio: 4/3; background: var(--md-sys-color-surface-container-high); }
.md-card__media img { width: 100%; height: 100%; object-fit: cover; display: block; }
.md-card__body { padding: 16px; display: flex; flex-direction: column; gap: 8px; flex: 1; min-width: 0; }
.md-card__title { margin: 0; }
.md-card__supporting { color: var(--md-sys-color-on-surface-variant); }
.md-card__actions {
  display: flex; gap: 8px; align-items: center;
  padding: 8px 16px 16px;
  justify-content: flex-end; flex-wrap: wrap;
}

/* ── Text fields ────────────────────────────────────────── */
.md-text-field {
  position: relative;
  display: inline-flex; align-items: center;
  width: 100%; min-height: 56px;
  border-radius: var(--md-sys-shape-corner-extra-small, 4px);
}
.md-text-field--outlined {
  border: 1px solid var(--md-sys-color-outline);
  padding: 0 16px;
  background: transparent;
  transition: border-color var(--md-sys-motion-duration-short4) var(--md-sys-motion-easing-standard);
}
.md-text-field--outlined:hover { border-color: var(--md-sys-color-on-surface); }
.md-text-field--outlined:focus-within {
  border-color: var(--md-sys-color-primary);
  box-shadow: inset 0 0 0 1px var(--md-sys-color-primary);
}
.md-text-field--filled {
  background: var(--md-sys-color-surface-container-highest);
  border-bottom: 1px solid var(--md-sys-color-on-surface-variant);
  border-radius: var(--md-sys-shape-corner-extra-small, 4px) var(--md-sys-shape-corner-extra-small, 4px) 0 0;
  padding: 0 16px;
}
.md-text-field--filled:focus-within { border-bottom-color: var(--md-sys-color-primary); border-bottom-width: 2px; }
.md-text-field__input {
  flex: 1; min-width: 0;
  background: transparent; border: 0; outline: 0;
  padding: 16px 0;
  color: var(--md-sys-color-on-surface);
  font-family: var(--md-sys-typescale-font);
  font-size: var(--md-sys-typescale-body-large-size);
  line-height: var(--md-sys-typescale-body-large-line-height);
}
.md-text-field__label {
  position: absolute; left: 16px; top: 50%;
  transform: translateY(-50%);
  background: var(--md-sys-color-surface);
  padding: 0 4px;
  color: var(--md-sys-color-on-surface-variant);
  pointer-events: none;
  font-size: 1rem;
  transition: transform var(--md-sys-motion-duration-short4) var(--md-sys-motion-easing-standard),
              font-size var(--md-sys-motion-duration-short4),
              color var(--md-sys-motion-duration-short4);
}
.md-text-field__input:not(:placeholder-shown) ~ .md-text-field__label,
.md-text-field__input:focus ~ .md-text-field__label {
  transform: translateY(calc(-50% - 28px));
  font-size: .75rem;
  color: var(--md-sys-color-primary);
}
.md-text-field__leading-icon  { margin-right: 12px; color: var(--md-sys-color-on-surface-variant); }
.md-text-field__trailing-icon { margin-left: 12px;  color: var(--md-sys-color-on-surface-variant); }
.md-text-field--error, .md-text-field--error:focus-within { border-color: var(--md-sys-color-error); box-shadow: none; }
.md-text-field--error .md-text-field__label { color: var(--md-sys-color-error); }
.md-text-field__supporting {
  display: block; padding: 4px 16px 0;
  font-size: var(--md-sys-typescale-body-small-size);
  line-height: var(--md-sys-typescale-body-small-line-height);
  color: var(--md-sys-color-on-surface-variant);
}
.md-text-field__supporting--error { color: var(--md-sys-color-error); }

/* ── Chips ──────────────────────────────────────────────── */
.md-chip {
  position: relative;
  display: inline-flex; align-items: center; gap: 8px;
  height: 32px; padding: 0 16px;
  border-radius: var(--md-sys-shape-corner-small, 8px);
  border: 1px solid var(--md-sys-color-outline);
  background: transparent;
  color: var(--md-sys-color-on-surface-variant);
  font-family: var(--md-sys-typescale-font);
  font-size: var(--md-sys-typescale-label-large-size);
  font-weight: var(--md-sys-typescale-label-large-weight);
  cursor: pointer;
  text-decoration: none; white-space: nowrap;
  transition: background-color var(--md-sys-motion-duration-short4);
}
.md-chip::before {
  content: ""; position: absolute; inset: 0; border-radius: inherit;
  background: currentColor; opacity: 0; pointer-events: none;
  transition: opacity var(--md-sys-motion-duration-short4);
}
.md-chip:hover::before       { opacity: var(--md-sys-state-hover-opacity); }
.md-chip:focus-visible::before { opacity: var(--md-sys-state-focus-opacity); }
.md-chip.is-selected {
  background: var(--md-sys-color-secondary-container);
  color: var(--md-sys-color-on-secondary-container);
  border-color: transparent;
}
.md-chip__icon { font-size: 18px; }
.md-chip-set { display: flex; flex-wrap: wrap; gap: 8px; }

/* ── Lists ──────────────────────────────────────────────── */
.md-list { list-style: none; margin: 0; padding: 0; }
.md-list__item { position: relative; display: flex; align-items: center; gap: 12px; min-height: 48px; padding: 8px 16px; }
.md-list__item--two-line { min-height: 64px; }
.md-list__item--three-line { min-height: 88px; align-items: flex-start; }
.md-list__leading { flex-shrink: 0; color: var(--md-sys-color-on-surface-variant); transition: transform var(--md-sys-motion-duration-short4) var(--md-sys-motion-easing-emphasized); }
.md-list__content { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 2px; }
.md-list__trailing { margin-left: auto; color: var(--md-sys-color-on-surface-variant); transition: transform var(--md-sys-motion-duration-short4) var(--md-sys-motion-easing-emphasized); }
.md-list__link {
  position: relative;
  display: flex; align-items: center; gap: 12px;
  flex: 1; padding: 4px 0;
  color: var(--md-sys-color-on-surface);
  text-decoration: none;
  transition: color var(--md-sys-motion-duration-short4) var(--md-sys-motion-easing-standard);
}
.md-list__link::before {
  content: ""; position: absolute; inset: -4px -8px;
  border-radius: var(--md-sys-shape-corner-extra-small, 4px);
  background: currentColor; opacity: 0; pointer-events: none;
  transition: opacity var(--md-sys-motion-duration-short4) var(--md-sys-motion-easing-standard);
}
.md-list__link:hover::before        { opacity: var(--md-sys-state-hover-opacity); }
.md-list__link:focus-visible::before { opacity: var(--md-sys-state-focus-opacity); }
.md-list__link:hover { color: var(--md-sys-color-primary); text-decoration: none; }
.md-list__link:hover .md-list__trailing { transform: translateX(2px); color: var(--md-sys-color-primary); }
.md-list--nav .md-list__item { padding: 0; border-bottom: 1px solid var(--md-sys-color-outline-variant); }
.md-list--nav .md-list__link { padding: 12px 4px; justify-content: space-between; }

/* ── Divider ────────────────────────────────────────────── */
.md-divider { border: 0; border-top: 1px solid var(--md-sys-color-outline-variant); margin: 0; }
.md-divider--inset { margin-inline-start: 16px; }
.md-divider--vertical { border-top: 0; border-inline-start: 1px solid var(--md-sys-color-outline-variant); align-self: stretch; }

/* ── Badges ─────────────────────────────────────────────── */
.md-badge {
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 16px; height: 16px; padding: 0 4px;
  border-radius: 9999px;
  background: var(--md-sys-color-error);
  color: var(--md-sys-color-on-error);
  font-size: 11px; font-weight: 600; line-height: 1;
}
.md-badge--dot { width: 6px; min-width: 6px; height: 6px; padding: 0; }
.md-badge--sale { background: var(--md-sys-color-primary); color: var(--md-sys-color-on-primary); }
.md-badge--out  { background: var(--md-sys-color-surface-container-highest); color: var(--md-sys-color-on-surface-variant); }

/* ── Switch ─────────────────────────────────────────────── */
.md-switch { position: relative; display: inline-flex; width: 52px; height: 32px; cursor: pointer; vertical-align: middle; }
.md-switch input { position: absolute; opacity: 0; width: 100%; height: 100%; margin: 0; cursor: pointer; }
.md-switch__track {
  position: absolute; inset: 0;
  background: var(--md-sys-color-surface-container-highest);
  border: 2px solid var(--md-sys-color-outline);
  border-radius: 9999px;
  transition: background-color var(--md-sys-motion-duration-short4), border-color var(--md-sys-motion-duration-short4);
}
.md-switch__thumb {
  position: absolute; top: 8px; left: 8px;
  width: 16px; height: 16px;
  background: var(--md-sys-color-outline);
  border-radius: 50%;
  transition: transform var(--md-sys-motion-duration-short4) var(--md-sys-motion-easing-standard),
              background-color var(--md-sys-motion-duration-short4);
}
.md-switch input:checked ~ .md-switch__track { background: var(--md-sys-color-primary); border-color: var(--md-sys-color-primary); }
.md-switch input:checked ~ .md-switch__thumb { transform: translate(20px, 0); background: var(--md-sys-color-on-primary); width: 24px; height: 24px; top: 2px; left: 2px; }

/* ── Checkbox ───────────────────────────────────────────── */
.md-checkbox { position: relative; display: inline-flex; align-items: center; gap: 8px; cursor: pointer; user-select: none; }
.md-checkbox input { position: absolute; opacity: 0; width: 24px; height: 24px; margin: 0; cursor: pointer; }
.md-checkbox__box {
  width: 18px; height: 18px;
  border: 2px solid var(--md-sys-color-on-surface-variant);
  border-radius: 2px;
  display: inline-flex; align-items: center; justify-content: center;
  transition: background-color var(--md-sys-motion-duration-short4), border-color var(--md-sys-motion-duration-short4);
}
.md-checkbox__box::after {
  content: ""; width: 10px; height: 5px;
  border-left: 2px solid var(--md-sys-color-on-primary);
  border-bottom: 2px solid var(--md-sys-color-on-primary);
  transform: rotate(-45deg) translate(1px, -1px);
  opacity: 0;
}
.md-checkbox input:checked ~ .md-checkbox__box { background: var(--md-sys-color-primary); border-color: var(--md-sys-color-primary); }
.md-checkbox input:checked ~ .md-checkbox__box::after { opacity: 1; }

/* ── Radio ──────────────────────────────────────────────── */
.md-radio { position: relative; display: inline-flex; align-items: center; gap: 8px; cursor: pointer; user-select: none; }
.md-radio input { position: absolute; opacity: 0; width: 20px; height: 20px; margin: 0; cursor: pointer; }
.md-radio__dot {
  width: 18px; height: 18px; border-radius: 50%;
  border: 2px solid var(--md-sys-color-on-surface-variant);
  display: inline-flex; align-items: center; justify-content: center;
}
.md-radio__dot::after {
  content: ""; width: 10px; height: 10px; border-radius: 50%;
  background: var(--md-sys-color-primary);
  transform: scale(0);
  transition: transform var(--md-sys-motion-duration-short4) var(--md-sys-motion-easing-standard);
}
.md-radio input:checked ~ .md-radio__dot { border-color: var(--md-sys-color-primary); }
.md-radio input:checked ~ .md-radio__dot::after { transform: scale(1); }

/* ── Snackbar ───────────────────────────────────────────── */
.md-snackbar {
  position: fixed; left: 50%; bottom: 24px;
  transform: translate(-50%, 120%);
  z-index: 200;
  max-width: min(640px, calc(100vw - 32px));
  transition: transform var(--md-sys-motion-duration-medium1) var(--md-sys-motion-easing-emphasized-decelerate);
  pointer-events: none;
}
.md-snackbar.is-open { transform: translate(-50%, 0); pointer-events: auto; }
.md-snackbar__surface {
  display: flex; align-items: center; gap: 16px;
  padding: 14px 16px;
  background: var(--md-sys-color-inverse-surface);
  color: var(--md-sys-color-inverse-on-surface);
  border-radius: var(--md-sys-shape-corner-extra-small, 4px);
  box-shadow: var(--md-sys-elevation-level3);
  min-height: 48px;
}
.md-snackbar__action {
  background: transparent; border: 0; cursor: pointer;
  color: var(--md-sys-color-inverse-primary);
  padding: 8px 10px; border-radius: 9999px;
  font-weight: 600;
}
.md-snackbar__action:hover { background: color-mix(in srgb, var(--md-sys-color-inverse-primary) 10%, transparent); }

/* ── Drawer (shared animation; layout/visibility is in layout.css) ── */
.md-drawer { transition: visibility 0s linear var(--md-sys-motion-duration-short4); }
.md-drawer__scrim { opacity: 0; transition: opacity var(--md-sys-motion-duration-short4) var(--md-sys-motion-easing-standard); }
.md-drawer__panel { transform: translateX(-100%); transition: transform var(--md-sys-motion-duration-medium1) var(--md-sys-motion-easing-emphasized); }
.md-drawer.is-open { visibility: visible; transition-delay: 0s; }
.md-drawer.is-open .md-drawer__scrim { opacity: 1; }
.md-drawer.is-open .md-drawer__panel { transform: translateX(0); }

/* ── Dialog (MD3 basic dialog — centered modal) ───────────── */
.md-dialog {
  position: fixed; inset: 0; z-index: 110;
  visibility: hidden;
  transition: visibility 0s linear var(--md-sys-motion-duration-short4);
}
.md-dialog__scrim {
  position: absolute; inset: 0;
  background: color-mix(in srgb, var(--md-sys-color-scrim, #000) 40%, transparent);
  opacity: 0;
  transition: opacity var(--md-sys-motion-duration-short4) var(--md-sys-motion-easing-standard);
}
.md-dialog__panel {
  position: absolute;
  inset-block-start: 50%; inset-inline-start: 50%;
  transform: translate(-50%, -48%) scale(0.96);
  width: min(560px, calc(100vw - 32px));
  max-height: min(80vh, 720px);
  display: flex; flex-direction: column;
  background: var(--md-sys-color-surface-container-high);
  color: var(--md-sys-color-on-surface);
  border-radius: 28px;
  box-shadow: var(--md-sys-elevation-level3);
  opacity: 0;
  transition:
    transform var(--md-sys-motion-duration-medium2) var(--md-sys-motion-easing-emphasized),
    opacity   var(--md-sys-motion-duration-short4)  var(--md-sys-motion-easing-standard);
}
.md-dialog.is-open { visibility: visible; transition-delay: 0s; }
.md-dialog.is-open .md-dialog__scrim { opacity: 1; }
.md-dialog.is-open .md-dialog__panel { transform: translate(-50%, -50%) scale(1); opacity: 1; }
.md-dialog__header {
  display: flex; align-items: center; justify-content: space-between;
  gap: 12px;
  padding: 20px 20px 8px 24px;
}
.md-dialog__title { margin: 0; color: var(--md-sys-color-on-surface); }
.md-dialog__content {
  padding: 4px 8px 16px;
  overflow-y: auto;
  flex: 1 1 auto;
}
@media (max-width: 599px) {
  .md-dialog__panel {
    width: calc(100vw - 16px);
    max-height: calc(100vh - 32px);
    border-radius: 24px;
  }
  .md-dialog__header { padding: 16px 12px 8px 20px; }
}
@media (prefers-reduced-motion: reduce) {
  .md-dialog__panel { transition: none; }
}

/* ── Tabs ───────────────────────────────────────────────── */
.md-tabs {
  display: flex; gap: 0;
  border-bottom: 1px solid var(--md-sys-color-outline-variant);
  overflow-x: auto; scrollbar-width: none;
}
.md-tabs::-webkit-scrollbar { display: none; }
.md-tab {
  position: relative;
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 16px; min-height: 48px;
  background: transparent; border: 0; cursor: pointer;
  color: var(--md-sys-color-on-surface-variant);
  font-family: var(--md-sys-typescale-font);
  font-size: var(--md-sys-typescale-title-small-size);
  font-weight: var(--md-sys-typescale-title-small-weight);
  text-decoration: none; white-space: nowrap;
  transition: color var(--md-sys-motion-duration-short4);
}
.md-tab:hover { color: var(--md-sys-color-on-surface); }
.md-tab.is-active { color: var(--md-sys-color-primary); }
.md-tab.is-active::after {
  content: ""; position: absolute; left: 12px; right: 12px; bottom: 0;
  height: 3px;
  background: var(--md-sys-color-primary);
  border-radius: 3px 3px 0 0;
}