.projects {
  background: var(--ink-raised);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding-top: clamp(72px, 12vw, 140px);
  padding-bottom: 0;
}

.projects__intro {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.projects__intro .section-heading { margin-bottom: 14px; }
.projects__hint {
  font-family: var(--font-mono);
  font-size: var(--step--1);
  color: var(--muted);
  letter-spacing: 0.04em;
}

/* ---- desktop 3D orbit ---- */
.orbit-scroll {
  position: relative;
  height: 340vh;
}

.orbit-stage {
  position: sticky;
  top: 0;
  height: 100vh;
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 0 var(--gutter);
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: clamp(24px, 5vw, 72px);
  align-items: center;
  overflow: hidden;
}

.orbit-css3d-wrap {
  position: relative;
  width: 100%;
  height: min(78vh, 680px);
}

.orbit-css3d-wrap .orbit-css3d {
  position: absolute;
  inset: 0;
}

.orbit-progress {
  position: absolute;
  left: 0;
  top: 0;
  font-family: var(--font-mono);
  font-size: var(--step--1);
  color: var(--teal);
  letter-spacing: 0.08em;
  z-index: 1;
}

/* the card element itself — used both in CSS3D ring and mobile list */
.orbit-card {
  position: relative;
  width: 210px;
  height: 260px;
  background: var(--ink);
  border: 1px solid var(--line-strong);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  cursor: pointer;
  overflow: hidden;
  transition: border-color 0.25s ease, opacity 0.25s ease, box-shadow 0.25s ease;
  opacity: 0.55;
}

.orbit-card__badge {
  position: absolute;
  top: 22px;
  left: -46px;
  width: 170px;
  transform: rotate(-45deg);
  transform-origin: center;
  background: var(--amber);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-align: center;
  padding: 4px 0;
  z-index: 2;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
  pointer-events: none;
}

.orbit-card.is-active {
  border-color: var(--amber);
  opacity: 1;
  box-shadow: 0 0 0 1px var(--amber), 0 24px 48px -20px rgba(0,0,0,0.6);
}

.orbit-card__thumb {
  width: 100%;
  height: 100px;
  background-size: cover;
  background-position: center;
  background-color: var(--ink-raised);
  border: 1px solid var(--line);
  position: relative;
}

.orbit-card__thumb--placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: var(--step--1);
  color: var(--muted);
  background-image:
    repeating-linear-gradient(45deg, var(--line) 0, var(--line) 1px, transparent 1px, transparent 12px);
}

.orbit-card__name {
  font-size: var(--step-1);
  line-height: 1.15;
}

.orbit-card__tag {
  margin-top: auto;
  display: inline-block;
}

/* ---- detail panel ---- */
.detail-panel {
  height: min(78vh, 680px);
  overflow-y: auto;
  padding: 4px clamp(12px, 2vw, 28px) 24px 28px;
  border-left: 1px solid var(--line);
  scrollbar-width: thin;
  scrollbar-color: var(--line-strong) transparent;
}

.detail-panel__index { display: block; margin-bottom: 16px; }

.detail-panel__name {
  font-size: var(--step-3);
  margin-bottom: 18px;
}

.detail-panel__desc {
  color: var(--paper-dim);
  font-size: var(--step-0);
  line-height: 1.7;
  margin-bottom: 24px;
}

.detail-panel__stack {
  list-style: none;
  padding: 0;
  margin: 0 0 28px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.detail-panel__stack li {
  font-family: var(--font-mono);
  font-size: var(--step--1);
  color: var(--teal);
  border: 1px solid var(--line-strong);
  padding: 5px 10px;
  letter-spacing: 0.03em;
}

.detail-panel__links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 28px;
}

.detail-panel__links a {
  font-family: var(--font-mono);
  font-size: var(--step--1);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border-bottom: 1px solid var(--line-strong);
  padding-bottom: 2px;
  transition: color 0.15s ease, border-color 0.15s ease;
}
.detail-panel__links a:hover { color: var(--amber); border-color: var(--amber); }

/* ---- mobile / reduced-motion fallback: vertical stack ---- */
.orbit-mobile-list {
  display: none;
  max-width: 640px;
  margin: 0 auto;
  padding: 40px var(--gutter) clamp(64px, 10vw, 100px);
}

.orbit-mobile-list details {
  border-top: 1px solid var(--line);
  padding: 20px 0;
}
.orbit-mobile-list details:last-child { border-bottom: 1px solid var(--line); }

.orbit-mobile-list summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
}
.orbit-mobile-list summary::-webkit-details-marker { display: none; }

.orbit-mobile-list summary .name {
  font-family: var(--font-display);
  font-size: var(--step-2);
}

.orbit-mobile-list summary .plus {
  font-family: var(--font-mono);
  color: var(--amber);
  flex-shrink: 0;
}
.orbit-mobile-list details[open] summary .plus { transform: rotate(45deg); }

.orbit-mobile-list .body { padding-top: 16px; }
.orbit-mobile-list .body p {
  color: var(--paper-dim);
  line-height: 1.7;
  margin: 0 0 18px;
}

/* breakpoint: below this, always use the mobile stacked list */
@media (max-width: 940px) {
  .orbit-scroll { display: none; }
  .orbit-mobile-list { display: block; }
}

/* reduced motion: never mount the 3D ring, regardless of width */
.no-orbit .orbit-scroll { display: none; }
.no-orbit .orbit-mobile-list { display: block; }