/* =========================================
   USM — Road Map
========================================= */

.usm-roadmap {
  --roadmap-surface: #111;
  --roadmap-text: #fff;
  --roadmap-muted: rgba(255, 255, 255, .62);
  --roadmap-line: rgba(255, 255, 255, .4);
  --roadmap-accent: var(--accent, #39ff14);

  /* Desktop sizing */
  --roadmap-card-width: clamp(290px, 23vw, 380px);
  --roadmap-card-gap: 18px;
  --roadmap-card-row: 290px;
  --roadmap-marker-row: 32px;

  position: relative;
  isolation: isolate;

  width: 100%;
  padding-block:
    clamp(40px, 3.5vw, 64px)
    clamp(32px, 3vw, 56px);
  overflow: hidden;

  color: var(--roadmap-text);
  background: var(--roadmap-surface);
  border-top: 1px solid rgba(255, 255, 255, .08);
}

/* =========================================
   Inner container
========================================= */

.usm-roadmap__inner {
  position: relative;
  width: var(--site-width);
  margin-inline: auto;
}

/* =========================================
   Compact heading
========================================= */

.usm-roadmap__header {
  display: flex;
  align-items: baseline;
  gap: .35em;

  min-height: 44px;
  margin: 0 112px clamp(16px, 1.5vw, 28px) 0;
}

.usm-roadmap__heading,
.usm-roadmap__eyebrow {
  margin: 0;

  color: var(--roadmap-muted);
  font-family: var(--font-heading, "Bebas Neue", sans-serif);
  font-size: clamp(18px, 1.25vw, 24px);
  font-weight: var(--w-700, 700);
  line-height: 1;
  letter-spacing: var(--ls-heading, .015em);
  text-transform: uppercase;
}

/* Display: THE ROAD MAP · 2026–2029 */

.usm-roadmap__heading {
  order: 1;
}

.usm-roadmap__eyebrow {
  order: 2;
}

.usm-roadmap__eyebrow::before {
  content: "·";
  margin-right: .35em;
}

/* =========================================
   Controls
========================================= */

.usm-roadmap__controls {
  position: absolute;
  z-index: 4;
  top: 0;
  right: 0;

  display: flex;
  align-items: center;
  gap: 8px;
}

.usm-roadmap .usm-roadmap__button {
  appearance: none;
  display: grid;
  place-items: center;

  width: 44px;
  height: 44px;
  padding: 0;

  border: 0 !important;
  border-radius: 0;
  background: transparent !important;
  box-shadow: none !important;

  color: var(--roadmap-muted) !important;
  font: inherit;
  font-size: 24px;
  line-height: 1;

  cursor: pointer;

  transition:
    color .2s ease,
    opacity .2s ease,
    transform .2s ease;
}

.usm-roadmap .usm-roadmap__button:hover,
.usm-roadmap .usm-roadmap__button:focus-visible {
  color: var(--roadmap-accent) !important;
  background: transparent !important;
}

.usm-roadmap .usm-roadmap__button.is-previous:hover {
  transform: translateX(-3px);
}

.usm-roadmap .usm-roadmap__button.is-next:hover {
  transform: translateX(3px);
}

.usm-roadmap .usm-roadmap__button:focus:not(:focus-visible) {
  outline: none;
}

.usm-roadmap .usm-roadmap__button:focus-visible {
  outline: 2px solid currentColor;
  outline-offset: 4px;
}

.usm-roadmap .usm-roadmap__button:disabled {
  opacity: .25;
  cursor: default;
  transform: none;
}

/* =========================================
   Horizontal scroller
========================================= */

.usm-roadmap__scroller {
  position: relative;

  width: calc(
    100% + var(--slider-gutter, clamp(24px, 4vw, 80px))
  );

  overflow-x: auto;
  overflow-y: hidden;

  scrollbar-width: none;
  overscroll-behavior-inline: contain;
  scroll-behavior: smooth;
  scroll-snap-type: inline mandatory;
}

.usm-roadmap__scroller::-webkit-scrollbar {
  display: none;
}

/* =========================================
   Timeline track
========================================= */

.usm-roadmap__track {
  position: relative;
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: var(--roadmap-card-width);
  gap: var(--roadmap-card-gap);

  width: max-content;
  min-width: 100%;

  /*
   The padding gives upper milestones breathing room.
   It is part of the track, so content is not clipped.
  */
  padding:
    12px
    var(--slider-gutter, clamp(24px, 4vw, 80px))
    16px
    0;
}

/* =========================================
   Timeline line
========================================= */

.usm-roadmap__line {
  position: absolute;
  z-index: 0;

  top: calc(
    12px +
    var(--roadmap-card-row) +
    (var(--roadmap-marker-row) / 2)
  );

  left: 0;
  right: var(--slider-gutter, clamp(24px, 4vw, 80px));

  height: 2px;
  background: var(--roadmap-line);
  pointer-events: none;
}

.usm-roadmap__progress {
  display: block;
  width: 0;
  height: 100%;
  background: var(--roadmap-accent);
}

/* =========================================
   Milestones
========================================= */

.usm-roadmap__milestone {
  position: relative;
  z-index: 1;

  display: grid;
  grid-template-rows:
    var(--roadmap-card-row)
    var(--roadmap-marker-row)
    var(--roadmap-card-row);

  min-width: 0;
  overflow: visible;

  scroll-snap-align: start;
  scroll-snap-stop: always;
}

/* Row 1 above, row 2 below, etc. */

.usm-roadmap__milestone.is-top .usm-roadmap__content {
  grid-row: 1;
  align-self: end;
  padding-bottom: 22px;
}

.usm-roadmap__milestone.is-bottom .usm-roadmap__content {
  grid-row: 3;
  align-self: start;
  padding-top: 22px;
}

/* =========================================
   Markers
========================================= */

.usm-roadmap__marker {
  position: relative;
  z-index: 2;

  grid-row: 2;
  align-self: center;
  justify-self: start;

  display: grid;
  place-items: center;

  width: 30px;
  height: 30px;

  border: 2px solid var(--roadmap-line);
  border-radius: 50%;
  background: var(--roadmap-surface);
}

.usm-roadmap__number {
  color: var(--roadmap-text);
  font-family: var(--font-ui, sans-serif);
  font-size: 12px;
  font-weight: 700;
  line-height: 1;
}

/* =========================================
   Milestone content
========================================= */

.usm-roadmap__content {
  position: relative;
  z-index: 1;

  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0;

  width: min(100%, 34ch);
  min-width: 0;
  overflow: visible;
}

.usm-roadmap__date {
  margin: 0 0 8px;
  padding-top: .08em;

  color: var(--roadmap-accent);
  font-family: var(--font-heading, "Bebas Neue", sans-serif);
  font-size: clamp(18px, 1.35vw, 24px);
  font-weight: 700;
  line-height: 1.1;
  text-transform: uppercase;
}

.usm-roadmap__title {
  margin: 0;

  color: var(--roadmap-text);
  font-family: var(--font-heading, "Bebas Neue", sans-serif);
  font-size: clamp(34px, 2.45vw, 48px);
  font-weight: 700;
  line-height: .98;
  letter-spacing: .01em;
  text-transform: uppercase;
}

.usm-roadmap__description {
  max-width: 31ch;
  margin-top: 20px;

  color: var(--roadmap-muted);
  font-family: var(--font-body, sans-serif);
  font-size: clamp(16px, 1.05vw, 20px);
  line-height: 1.45;
}

.usm-roadmap__description p {
  margin: 0;
}

/* =========================================
   Mobile — vertical timeline
========================================= */

@media (max-width: 767px) {
  .usm-roadmap {
    padding-block: 56px 64px;
  }

  .usm-roadmap__header {
    margin-right: 0;
    margin-bottom: 52px;
  }

  .usm-roadmap__controls {
    display: none;
  }

  .usm-roadmap__scroller {
    width: 100%;
    overflow: visible;
    scroll-snap-type: none;
  }

  .usm-roadmap__track {
    display: block;
    width: auto;
    min-width: 0;
    padding: 0 0 0 56px;
  }

  .usm-roadmap__line {
    top: 12px;
    right: auto;
    bottom: 12px;
    left: 15px;

    width: 2px;
    height: auto;
  }

  .usm-roadmap__milestone {
    position: relative;
    display: block;

    width: auto;
    min-height: 0;
    margin-bottom: 72px;
    overflow: visible;
  }

  .usm-roadmap__milestone:last-child {
    margin-bottom: 0;
  }

  .usm-roadmap__marker {
    position: absolute;
    top: 0;
    left: -56px;
  }

  .usm-roadmap__milestone.is-top .usm-roadmap__content,
  .usm-roadmap__milestone.is-bottom .usm-roadmap__content {
    display: flex;
    width: 100%;
    padding: 0;
  }

  .usm-roadmap__title {
    font-size: clamp(34px, 10vw, 48px);
  }

  .usm-roadmap__description {
    margin-top: 18px;
    font-size: 18px;
  }
}

/* =========================================
   Reduced motion
========================================= */

@media (prefers-reduced-motion: reduce) {
  .usm-roadmap__scroller {
    scroll-behavior: auto;
  }

  .usm-roadmap__button {
    transition: none;
  }
}