/* ==========================================================================
   PONKOIN — Material 3 components
   ========================================================================== */

/* --------------------------------------------------------------------------
   Material Symbols
   -------------------------------------------------------------------------- */
.msym {
  font-family: "Material Symbols Rounded";
  font-weight: normal;
  font-style: normal;
  font-size: 1.25rem;
  line-height: 1;
  letter-spacing: normal;
  text-transform: none;
  display: inline-block;
  white-space: nowrap;
  direction: ltr;
  font-variation-settings: "FILL" 0, "wght" 400, "GRAD" 0, "opsz" 24;
  -webkit-font-feature-settings: "liga";
  font-feature-settings: "liga";
  -webkit-font-smoothing: antialiased;
  user-select: none;
  flex: none;
}

.msym--fill { font-variation-settings: "FILL" 1, "wght" 400, "GRAD" 0, "opsz" 24; }
.msym--lg { font-size: 1.75rem; }
.msym--xl { font-size: 2.25rem; }

/* --------------------------------------------------------------------------
   Buttons (M3: filled, tonal, outlined, text, FAB)
   -------------------------------------------------------------------------- */
.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  padding: 0.75rem 1.5rem;
  min-height: 48px;
  border: none;
  border-radius: var(--md-shape-full);
  font: var(--type-label-lg);
  letter-spacing: 0.02em;
  cursor: pointer;
  overflow: hidden;
  isolation: isolate;
  text-align: center;
  background: transparent;
  transition: box-shadow var(--md-dur-short) var(--md-ease-standard),
    scale var(--md-dur-short) var(--md-ease-emphasized),
    background-color var(--md-dur-short) var(--md-ease-standard);
}

.btn::before {
  /* State layer */
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: currentColor;
  opacity: 0;
  transition: opacity var(--md-dur-short) var(--md-ease-standard);
}

.btn:hover::before { opacity: var(--md-state-hover); }
.btn:focus-visible::before { opacity: var(--md-state-focus); }
.btn:active { scale: 0.97; }
.btn:disabled,
.btn[aria-disabled="true"] {
  cursor: not-allowed;
  opacity: 0.38;
  scale: 1;
}

.btn--filled {
  background: var(--md-primary);
  color: var(--md-on-primary);
  box-shadow: var(--md-elev-1);
}
.btn--filled:hover { box-shadow: var(--md-elev-2); }

.btn--amber {
  background: var(--md-secondary);
  color: var(--md-on-secondary);
  box-shadow: var(--md-elev-1);
}
.btn--amber:hover { box-shadow: var(--md-elev-2); }

.btn--tonal {
  background: var(--md-primary-container);
  color: var(--md-on-primary-container);
}

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

.btn--outlined {
  color: var(--md-primary);
  box-shadow: inset 0 0 0 1px var(--md-outline);
}
.btn--outlined:hover { box-shadow: inset 0 0 0 1px var(--md-primary); }

.btn--text {
  color: var(--md-primary);
  padding-inline: 0.9rem;
}

.btn--lg {
  min-height: 60px;
  padding: 1rem 2rem;
  font-size: 1.0625rem;
}

.btn--sm {
  min-height: 40px;
  padding: 0.5rem 1.1rem;
  font: var(--type-label-md);
}

.btn--block {
  width: 100%;
}

.btn--icon {
  padding: 0;
  width: 48px;
  min-height: 48px;
  border-radius: var(--md-shape-full);
  color: var(--md-on-surface-variant);
}

.btn--glow {
  box-shadow: var(--md-elev-2), 0 0 0 0 var(--ponk-glow-a);
  animation: ponk-pulse 3.2s var(--md-ease-standard) infinite;
}

@keyframes ponk-pulse {
  0%, 100% { box-shadow: var(--md-elev-2), 0 0 0 0 var(--ponk-glow-a); }
  50% { box-shadow: var(--md-elev-2), 0 0 0 14px transparent; }
}

/* Ripple */
.ripple {
  position: absolute;
  border-radius: 50%;
  background: currentColor;
  opacity: 0.22;
  transform: scale(0);
  animation: ripple-out 560ms var(--md-ease-emphasized-decel) forwards;
  pointer-events: none;
  z-index: -1;
}

@keyframes ripple-out {
  to { transform: scale(2.6); opacity: 0; }
}

/* --------------------------------------------------------------------------
   Top app bar
   -------------------------------------------------------------------------- */
.appbar {
  position: sticky;
  top: 0;
  z-index: 60;
  height: var(--appbar-h);
  display: flex;
  align-items: center;
  background: transparent;
  transition: background-color var(--md-dur-medium) var(--md-ease-standard),
    box-shadow var(--md-dur-medium) var(--md-ease-standard),
    backdrop-filter var(--md-dur-medium) var(--md-ease-standard);
}

.appbar.is-stuck {
  background: var(--ponk-glass);
  -webkit-backdrop-filter: blur(18px) saturate(150%);
  backdrop-filter: blur(18px) saturate(150%);
  box-shadow: var(--md-elev-2);
  border-bottom: 1px solid var(--ponk-hairline);
}

.appbar__inner {
  display: flex;
  align-items: center;
  gap: 1rem;
  width: 100%;
  max-width: var(--page-max);
  margin-inline: auto;
  padding-inline: var(--page-gutter);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  flex: none;
  margin-right: auto;
}

.brand__mark {
  width: 42px;
  height: 42px;
  border-radius: var(--md-shape-md);
  flex: none;
  filter: drop-shadow(0 2px 6px rgba(0, 0, 0, 0.35));
  transition: rotate var(--md-dur-medium) var(--md-ease-emphasized);
}

.brand:hover .brand__mark {
  rotate: -8deg;
}

.brand__name {
  font-family: var(--md-font-brand);
  font-weight: 800;
  font-size: 1.3rem;
  letter-spacing: -0.03em;
  line-height: 1;
}

.brand__name span {
  color: var(--md-primary);
}

/* Desktop nav */
.nav {
  display: none;
  align-items: center;
  gap: 0.15rem;
}

.nav__link {
  position: relative;
  padding: 0.55rem 0.85rem;
  border-radius: var(--md-shape-full);
  font: var(--type-label-lg);
  color: var(--md-on-surface-variant);
  white-space: nowrap;
  transition: color var(--md-dur-short) var(--md-ease-standard),
    background-color var(--md-dur-short) var(--md-ease-standard);
}

.nav__link:hover {
  color: var(--md-on-surface);
  background: color-mix(in srgb, var(--md-on-surface) 8%, transparent);
}

.nav__link[aria-current="page"] {
  color: var(--md-on-primary-container);
  background: var(--md-primary-container);
}

.appbar__actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex: none;
}

.appbar__cta { display: none; }

@media (min-width: 1060px) {
  .nav { display: flex; }
  .appbar__cta { display: inline-flex; }
  .nav-toggle { display: none; }
}

/* --------------------------------------------------------------------------
   Navigation drawer (mobile)
   -------------------------------------------------------------------------- */
.scrim {
  position: fixed;
  inset: 0;
  z-index: 70;
  background: var(--md-scrim);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--md-dur-medium) var(--md-ease-standard), visibility var(--md-dur-medium);
}

.scrim.is-open {
  opacity: 0.5;
  visibility: visible;
}

.drawer {
  position: fixed;
  inset-block: 0;
  right: 0;
  z-index: 80;
  width: min(360px, 88vw);
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  padding: 1rem;
  background: var(--md-surface-container-low);
  border-left: 1px solid var(--ponk-hairline);
  border-radius: var(--md-shape-xl) 0 0 var(--md-shape-xl);
  box-shadow: var(--md-elev-5);
  translate: 100% 0;
  visibility: hidden;
  overflow-y: auto;
  overscroll-behavior: contain;
  transition: translate var(--md-dur-long) var(--md-ease-emphasized), visibility var(--md-dur-long);
}

.drawer.is-open {
  translate: 0 0;
  visibility: visible;
}

.drawer__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.35rem 0.35rem 0.9rem;
}

.drawer__link {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  padding: 0.95rem 1.25rem;
  border-radius: var(--md-shape-full);
  font: var(--type-label-lg);
  font-size: 0.95rem;
  color: var(--md-on-surface-variant);
  transition: background-color var(--md-dur-short) var(--md-ease-standard),
    color var(--md-dur-short) var(--md-ease-standard);
}

.drawer__link:hover {
  background: color-mix(in srgb, var(--md-on-surface) 8%, transparent);
  color: var(--md-on-surface);
}

.drawer__link[aria-current="page"] {
  background: var(--md-primary-container);
  color: var(--md-on-primary-container);
}

.drawer__footer {
  margin-top: auto;
  padding-top: 1.25rem;
  display: grid;
  gap: 0.6rem;
}

/* --------------------------------------------------------------------------
   Cards
   -------------------------------------------------------------------------- */
.card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  padding: clamp(1.25rem, 2.4vw, 1.75rem);
  background: var(--md-surface-container);
  border: 1px solid var(--ponk-hairline);
  border-radius: var(--md-shape-xl);
  overflow: hidden;
  transition: translate var(--md-dur-medium) var(--md-ease-emphasized),
    box-shadow var(--md-dur-medium) var(--md-ease-emphasized),
    border-color var(--md-dur-medium) var(--md-ease-standard);
}

.card--interactive:hover,
a.card:hover {
  translate: 0 -6px;
  box-shadow: var(--md-elev-3);
  border-color: color-mix(in srgb, var(--md-primary) 40%, transparent);
}

.card--outlined {
  background: transparent;
  border-color: var(--md-outline-variant);
}

.card--elevated {
  background: var(--md-surface-container-low);
  box-shadow: var(--md-elev-1);
}

.card__icon {
  display: grid;
  place-items: center;
  width: 56px;
  height: 56px;
  border-radius: var(--md-shape-lg);
  background: var(--md-primary-container);
  color: var(--md-on-primary-container);
  flex: none;
}

.card__icon--amber {
  background: var(--md-secondary-container);
  color: var(--md-on-secondary-container);
}

.card__icon--red {
  background: var(--md-tertiary-container);
  color: var(--md-on-tertiary-container);
}

.card__num {
  font-family: var(--md-font-brand);
  font-size: 3.25rem;
  font-weight: 800;
  line-height: 0.9;
  letter-spacing: -0.05em;
  color: color-mix(in srgb, var(--md-primary) 30%, transparent);
}

/* --------------------------------------------------------------------------
   Chips
   -------------------------------------------------------------------------- */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.45rem 0.95rem;
  min-height: 34px;
  border-radius: var(--md-shape-full);
  background: var(--md-surface-container-high);
  border: 1px solid var(--md-outline-variant);
  font: var(--type-label-md);
  color: var(--md-on-surface-variant);
  white-space: nowrap;
}

.chip--primary {
  background: var(--md-primary-container);
  border-color: transparent;
  color: var(--md-on-primary-container);
}

.chip--amber {
  background: var(--md-secondary-container);
  border-color: transparent;
  color: var(--md-on-secondary-container);
}

/* Hero eyebrow — bare text and dot, no pill container */
.chip--live {
  color: var(--md-primary);
  background: none;
  border: none;
  padding-inline: 0;
  min-height: 0;
}

.chip__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: currentColor;
  animation: blip 1.8s ease-in-out infinite;
}

@keyframes blip {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.35; transform: scale(0.75); }
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font: var(--type-label-md);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--md-secondary);
}

.eyebrow::before {
  content: "";
  width: 26px;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
}

.section-head--center .eyebrow::before {
  display: none;
}

/* --------------------------------------------------------------------------
   Stat tiles
   -------------------------------------------------------------------------- */
.stat {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  padding: clamp(1.1rem, 2vw, 1.5rem);
  border-radius: var(--md-shape-lg);
  background: var(--md-surface-container);
  border: 1px solid var(--ponk-hairline);
}

.stat__value {
  font-family: var(--md-font-brand);
  font-size: clamp(1.6rem, 3.4vw, 2.3rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1;
  color: var(--md-on-surface);
}

.stat__label {
  font: var(--type-label-md);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--md-on-surface-variant);
}

/* --------------------------------------------------------------------------
   Marquee
   -------------------------------------------------------------------------- */
.marquee {
  --marquee-duration: 34s;
  position: relative;
  display: flex;
  overflow: hidden;
  padding-block: 0.9rem;
  border-block: 1px solid var(--ponk-hairline);
  background: var(--md-surface-container-low);
  mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
  user-select: none;
}

.marquee__track {
  display: flex;
  flex: none;
  gap: 2.5rem;
  padding-right: 2.5rem;
  align-items: center;
  animation: marquee-slide var(--marquee-duration) linear infinite;
}

.marquee:hover .marquee__track {
  animation-play-state: paused;
}

.marquee__item {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--md-font-brand);
  font-weight: 700;
  font-size: clamp(1rem, 1.8vw, 1.35rem);
  letter-spacing: -0.01em;
  white-space: nowrap;
  color: var(--md-on-surface-variant);
}

.marquee__item .msym {
  color: var(--md-secondary);
}

@keyframes marquee-slide {
  to { translate: -100% 0; }
}

/* --------------------------------------------------------------------------
   Contract address bar
   -------------------------------------------------------------------------- */
.ca {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  padding: 0.8rem 0.8rem 0.8rem 1.35rem;
  background: var(--md-surface-container-high);
  border: 1px solid var(--md-outline-variant);
  border-radius: var(--md-shape-xl);
  box-shadow: var(--md-elev-1);
}

.ca__label {
  font: var(--type-label-sm);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--md-on-surface-variant);
}

.ca__value {
  flex: 1 1 240px;
  min-width: 0;
  font-family: var(--md-font-mono);
  font-size: 0.8125rem;
  letter-spacing: -0.01em;
  color: var(--md-on-surface);
  overflow-wrap: anywhere;
}

/* --------------------------------------------------------------------------
   Accordion (FAQ)
   -------------------------------------------------------------------------- */
.accordion {
  display: grid;
  gap: 0.75rem;
}

.acc {
  background: var(--md-surface-container);
  border: 1px solid var(--ponk-hairline);
  border-radius: var(--md-shape-lg);
  overflow: hidden;
  transition: border-color var(--md-dur-medium) var(--md-ease-standard),
    background-color var(--md-dur-medium) var(--md-ease-standard);
}

.acc[open] {
  border-color: color-mix(in srgb, var(--md-primary) 42%, transparent);
  background: var(--md-surface-container-high);
}

.acc__q {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.15rem 1.35rem;
  cursor: pointer;
  font: var(--type-title-md);
  font-size: 1.05rem;
  list-style: none;
  transition: color var(--md-dur-short) var(--md-ease-standard);
}

.acc__q::-webkit-details-marker { display: none; }
.acc__q:hover { color: var(--md-primary); }

.acc__q .msym {
  margin-left: auto;
  color: var(--md-primary);
  transition: rotate var(--md-dur-medium) var(--md-ease-emphasized);
}

.acc[open] .acc__q .msym { rotate: 180deg; }

.acc__a {
  padding: 0 1.35rem 1.35rem;
  color: var(--md-on-surface-variant);
  font: var(--type-body-md);
  max-width: 78ch;
}

.acc__a > * + * { margin-top: 0.75rem; }

/* --------------------------------------------------------------------------
   Timeline (roadmap)
   -------------------------------------------------------------------------- */
.timeline {
  position: relative;
  display: grid;
  gap: clamp(1.25rem, 3vw, 2rem);
  padding-left: 2.75rem;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 15px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--md-primary), var(--md-secondary), var(--md-tertiary));
  opacity: 0.5;
  border-radius: 2px;
}

.tl-item {
  position: relative;
}

.tl-item::before {
  content: "";
  position: absolute;
  left: -2.75rem;
  top: 1.5rem;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--md-surface);
  border: 3px solid var(--md-outline-variant);
  box-shadow: 0 0 0 6px var(--md-surface);
}

.tl-item--done::before {
  background: var(--md-primary);
  border-color: var(--md-primary);
}

.tl-item--active::before {
  background: var(--md-secondary);
  border-color: var(--md-secondary);
  animation: ponk-ring 2.4s var(--md-ease-standard) infinite;
}

@keyframes ponk-ring {
  0%, 100% { box-shadow: 0 0 0 6px var(--md-surface), 0 0 0 6px var(--ponk-glow-b); }
  55% { box-shadow: 0 0 0 6px var(--md-surface), 0 0 0 18px transparent; }
}

/* --------------------------------------------------------------------------
   Steps (how to buy)
   -------------------------------------------------------------------------- */
.step {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1.25rem 1.5rem;
  align-items: start;
  padding: clamp(1.25rem, 2.4vw, 1.9rem);
  background: var(--md-surface-container);
  border: 1px solid var(--ponk-hairline);
  border-radius: var(--md-shape-xl);
  transition: border-color var(--md-dur-medium) var(--md-ease-standard),
    box-shadow var(--md-dur-medium) var(--md-ease-standard);
}

.step:hover {
  border-color: color-mix(in srgb, var(--md-primary) 40%, transparent);
  box-shadow: var(--md-elev-2);
}

.step__badge {
  display: grid;
  place-items: center;
  width: 54px;
  height: 54px;
  border-radius: var(--md-shape-lg);
  background: var(--md-primary);
  color: var(--md-on-primary);
  font-family: var(--md-font-brand);
  font-weight: 800;
  font-size: 1.4rem;
  flex: none;
}

.step__body > * + * { margin-top: 0.6rem; }

/* --------------------------------------------------------------------------
   Snackbar
   -------------------------------------------------------------------------- */
.snackbar {
  position: fixed;
  left: 50%;
  bottom: 28px;
  z-index: 200;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.9rem 1.35rem;
  border-radius: var(--md-shape-sm);
  background: var(--md-inverse-surface);
  color: var(--md-inverse-on-surface);
  box-shadow: var(--md-elev-3);
  font: var(--type-body-md);
  translate: -50% 200%;
  opacity: 0;
  pointer-events: none;
  max-width: min(560px, calc(100vw - 2rem));
  transition: translate var(--md-dur-long) var(--md-ease-emphasized),
    opacity var(--md-dur-medium) var(--md-ease-standard);
}

.snackbar.is-open {
  translate: -50% 0;
  opacity: 1;
}

.snackbar .msym { color: var(--md-inverse-primary); }

/* --------------------------------------------------------------------------
   Banner / callout
   -------------------------------------------------------------------------- */
.callout {
  display: flex;
  gap: 1rem;
  padding: 1.25rem 1.5rem;
  border-radius: var(--md-shape-lg);
  background: color-mix(in srgb, var(--md-secondary) 12%, var(--md-surface-container));
  border: 1px solid color-mix(in srgb, var(--md-secondary) 38%, transparent);
  color: var(--md-on-surface-variant);
}

.callout .msym {
  color: var(--md-secondary);
  flex: none;
}

.callout--danger {
  background: color-mix(in srgb, var(--md-tertiary) 12%, var(--md-surface-container));
  border-color: color-mix(in srgb, var(--md-tertiary) 38%, transparent);
}

.callout--danger .msym { color: var(--md-tertiary); }

.callout strong { color: var(--md-on-surface); }

/* --------------------------------------------------------------------------
   Link list / ecosystem tiles
   -------------------------------------------------------------------------- */
.tile {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.1rem 1.25rem;
  background: var(--md-surface-container);
  border: 1px solid var(--ponk-hairline);
  border-radius: var(--md-shape-lg);
  transition: translate var(--md-dur-medium) var(--md-ease-emphasized),
    background-color var(--md-dur-short) var(--md-ease-standard),
    border-color var(--md-dur-short) var(--md-ease-standard);
}

.tile:hover {
  translate: 0 -4px;
  background: var(--md-surface-container-high);
  border-color: color-mix(in srgb, var(--md-primary) 40%, transparent);
}

.tile__icon {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border-radius: var(--md-shape-md);
  background: var(--md-surface-container-highest);
  color: var(--md-primary);
  flex: none;
}

.tile__arrow {
  margin-left: auto;
  color: var(--md-on-surface-variant);
  transition: translate var(--md-dur-short) var(--md-ease-emphasized);
}

.tile:hover .tile__arrow {
  translate: 4px -4px;
  color: var(--md-primary);
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
.footer {
  position: relative;
  padding-block: clamp(3rem, 6vw, 5rem) 2rem;
  background: var(--md-surface-container-lowest);
  border-top: 1px solid var(--ponk-hairline);
}

.footer__grid {
  display: grid;
  gap: clamp(2rem, 4vw, 3rem);
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 200px), 1fr));
  margin-bottom: 3rem;
}

.footer__brandcol {
  grid-column: span 2;
  min-width: min(100%, 260px);
}

@media (max-width: 640px) {
  .footer__brandcol { grid-column: span 1; }
}

.footer__title {
  font: var(--type-label-lg);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--md-on-surface);
  margin-bottom: 1.1rem;
}

.footer__links {
  display: grid;
  gap: 0.7rem;
}

.footer__links a {
  font: var(--type-body-md);
  color: var(--md-on-surface-variant);
  transition: color var(--md-dur-short) var(--md-ease-standard),
    translate var(--md-dur-short) var(--md-ease-emphasized);
  width: fit-content;
}

.footer__links a:hover {
  color: var(--md-primary);
  translate: 3px 0;
}

.footer__bottom {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
  justify-content: space-between;
  padding-top: 1.75rem;
  border-top: 1px solid var(--ponk-hairline);
  font: var(--type-body-sm);
  color: var(--md-on-surface-variant);
}

.social-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.social-btn {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border-radius: var(--md-shape-md);
  background: var(--md-surface-container);
  border: 1px solid var(--ponk-hairline);
  color: var(--md-on-surface-variant);
  transition: background-color var(--md-dur-short) var(--md-ease-standard),
    color var(--md-dur-short) var(--md-ease-standard),
    translate var(--md-dur-short) var(--md-ease-emphasized);
}

.social-btn:hover {
  background: var(--md-primary-container);
  color: var(--md-on-primary-container);
  translate: 0 -3px;
}

.social-btn svg {
  width: 20px;
  height: 20px;
  fill: currentColor;
}

/* --------------------------------------------------------------------------
   Back to top FAB
   -------------------------------------------------------------------------- */
.fab-top {
  position: fixed;
  right: clamp(1rem, 3vw, 2rem);
  bottom: clamp(1rem, 3vw, 2rem);
  z-index: 55;
  width: 56px;
  height: 56px;
  border-radius: var(--md-shape-lg);
  background: var(--md-secondary-container);
  color: var(--md-on-secondary-container);
  border: none;
  display: grid;
  place-items: center;
  cursor: pointer;
  box-shadow: var(--md-elev-3);
  opacity: 0;
  translate: 0 24px;
  pointer-events: none;
  transition: opacity var(--md-dur-medium) var(--md-ease-standard),
    translate var(--md-dur-medium) var(--md-ease-emphasized),
    scale var(--md-dur-short) var(--md-ease-emphasized);
}

.fab-top.is-visible {
  opacity: 1;
  translate: 0 0;
  pointer-events: auto;
}

.fab-top:hover { scale: 1.06; }
.fab-top:active { scale: 0.95; }

/* --------------------------------------------------------------------------
   Scroll progress bar
   -------------------------------------------------------------------------- */
.progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 90;
  height: 3px;
  width: 100%;
  transform-origin: 0 50%;
  scale: 0 1;
  background: linear-gradient(90deg, var(--md-primary), var(--md-secondary), var(--md-tertiary));
  pointer-events: none;
}