/* REM mechanics — Oneirox physiology cluster */
:root {
  --rm-forest: #3a4435;
  --rm-moss: #566e58;
  --rm-mist: #9aaa90;
  --rm-canvas: #cbd4c2;
  --rm-white: #f8faf5;
  --rm-deep: #1a2848;
  --rm-ocean: #266799;
  --rm-signal: #00a5a8;
  --rm-serif: "Playfair Display", Georgia, serif;
  --rm-sans: "Work Sans", -apple-system, BlinkMacSystemFont, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }

body.rm-body {
  margin: 0;
  font-family: var(--rm-sans);
  color: var(--rm-forest);
  background:
    radial-gradient(1100px 520px at 8% -8%, rgba(26, 40, 72, 0.16), transparent 55%),
    radial-gradient(900px 480px at 100% 0%, rgba(0, 165, 168, 0.12), transparent 50%),
    linear-gradient(180deg, #d5ddd0 0%, var(--rm-canvas) 40%, #c2cdba 100%);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

.rm-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  max-width: 980px;
  margin: 0 auto;
  padding: 1rem 1.25rem;
}

.rm-brand {
  font-family: var(--rm-serif);
  font-weight: 700;
  font-size: 1.35rem;
  color: var(--rm-forest);
  text-decoration: none;
}

.rm-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  font-size: 0.9rem;
}

.rm-nav a {
  color: var(--rm-moss);
  text-decoration: none;
}

.rm-nav a:hover,
.rm-nav a[aria-current="page"] {
  color: var(--rm-deep);
  text-decoration: underline;
}

.rm-main {
  max-width: 980px;
  margin: 0 auto;
  padding: 0.25rem 1.25rem 3.5rem;
}

.rm-kicker {
  margin: 0 0 0.45rem;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  font-size: 0.72rem;
  color: var(--rm-mist);
}

.rm-title {
  margin: 0 0 0.75rem;
  font-family: var(--rm-serif);
  font-size: clamp(1.75rem, 3.4vw, 2.55rem);
  line-height: 1.15;
  font-weight: 700;
}

.rm-lead {
  margin: 0 0 1.5rem;
  max-width: 42rem;
  font-size: 1.05rem;
  color: var(--rm-moss);
}

.rm-hero-panel {
  position: relative;
  overflow: hidden;
  margin: 0 0 2rem;
  padding: 1.35rem 1.25rem 1.5rem;
  border: 1px solid rgba(58, 68, 53, 0.18);
  background:
    linear-gradient(135deg, rgba(26, 40, 72, 0.92), rgba(38, 103, 153, 0.78)),
    var(--rm-deep);
  color: var(--rm-white);
}

.rm-hero-panel h2 {
  margin: 0 0 0.55rem;
  font-family: var(--rm-serif);
  font-size: clamp(1.25rem, 2.4vw, 1.7rem);
}

.rm-hero-panel p {
  margin: 0;
  max-width: 40rem;
  opacity: 0.92;
}

.rm-systems {
  display: grid;
  gap: 0.75rem;
  margin: 0 0 2rem;
}

.rm-sys {
  border: 1px solid rgba(58, 68, 53, 0.2);
  background: rgba(248, 250, 245, 0.72);
  padding: 0;
  overflow: hidden;
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}

.rm-sys.is-active {
  border-color: var(--rm-signal);
  box-shadow: 0 0 0 1px rgba(0, 165, 168, 0.25);
}

.rm-sys__btn {
  width: 100%;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 0.85rem;
  align-items: center;
  padding: 1rem 1.1rem;
  border: 0;
  background: transparent;
  text-align: left;
  cursor: pointer;
  color: inherit;
  font: inherit;
}

.rm-sys__tag {
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--rm-signal);
  font-weight: 600;
}

.rm-sys__name {
  font-family: var(--rm-serif);
  font-size: 1.15rem;
  font-weight: 700;
}

.rm-sys__chev {
  opacity: 0.55;
  transition: transform 0.25s ease;
}

.rm-sys.is-open .rm-sys__chev {
  transform: rotate(180deg);
}

.rm-sys__body {
  display: none;
  padding: 0 1.1rem 1.15rem;
  border-top: 1px solid rgba(58, 68, 53, 0.12);
}

.rm-sys.is-open .rm-sys__body {
  display: block;
  animation: rmReveal 0.35s ease;
}

@keyframes rmReveal {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}

.rm-sys__body p {
  margin: 0.85rem 0 0;
  color: var(--rm-forest);
}

.rm-sys__meta {
  margin-top: 0.75rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.rm-chip {
  font-size: 0.78rem;
  padding: 0.28rem 0.55rem;
  background: rgba(0, 165, 168, 0.12);
  color: var(--rm-deep);
}

.rm-night {
  margin: 0 0 2.25rem;
  padding: 1.2rem 1.15rem 1.35rem;
  background: rgba(248, 250, 245, 0.78);
  border: 1px solid rgba(58, 68, 53, 0.18);
}

.rm-night h2 {
  margin: 0 0 0.4rem;
  font-family: var(--rm-serif);
  font-size: 1.35rem;
}

.rm-night__hint {
  margin: 0 0 1rem;
  color: var(--rm-moss);
  font-size: 0.95rem;
}

.rm-track {
  position: relative;
  height: 72px;
  margin: 0.5rem 0 0.85rem;
  background:
    repeating-linear-gradient(
      90deg,
      rgba(58, 68, 53, 0.06) 0,
      rgba(58, 68, 53, 0.06) 1px,
      transparent 1px,
      transparent calc(100% / 8)
    ),
    linear-gradient(180deg, #e8eee3, #dfe6d9);
  overflow: hidden;
}

.rm-rem-block {
  position: absolute;
  bottom: 14px;
  height: 28px;
  background: linear-gradient(180deg, #3eb8bb, #1a6f8a);
  opacity: 0.35;
  transition: height 0.35s ease, opacity 0.35s ease, width 0.35s ease;
}

.rm-rem-block.is-lit {
  opacity: 1;
  box-shadow: 0 0 18px rgba(0, 165, 168, 0.35);
}

.rm-scrub {
  width: 100%;
  accent-color: var(--rm-signal);
}

.rm-night__readout {
  margin: 0.75rem 0 0;
  font-size: 0.95rem;
}

.rm-night__readout strong {
  font-family: var(--rm-serif);
}

.rm-grid-links {
  display: grid;
  gap: 0.75rem;
  margin: 0 0 2rem;
}

@media (min-width: 720px) {
  .rm-grid-links {
    grid-template-columns: 1fr 1fr;
  }
}

.rm-card-link {
  display: block;
  padding: 1.05rem 1.1rem;
  text-decoration: none;
  color: inherit;
  background: rgba(248, 250, 245, 0.8);
  border: 1px solid rgba(58, 68, 53, 0.18);
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.rm-card-link:hover {
  border-color: var(--rm-signal);
  transform: translateY(-1px);
}

.rm-card-link h3 {
  margin: 0 0 0.35rem;
  font-family: var(--rm-serif);
  font-size: 1.15rem;
}

.rm-card-link p {
  margin: 0;
  color: var(--rm-moss);
  font-size: 0.92rem;
}

.rm-prose h2 {
  margin: 2rem 0 0.65rem;
  font-family: var(--rm-serif);
  font-size: 1.4rem;
}

.rm-prose p {
  margin: 0 0 1rem;
  max-width: 40rem;
}

.rm-table-wrap {
  overflow-x: auto;
  margin: 1rem 0 1.75rem;
  border: 1px solid rgba(58, 68, 53, 0.18);
  background: rgba(248, 250, 245, 0.85);
}

.rm-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
}

.rm-table th,
.rm-table td {
  padding: 0.85rem 1rem;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid rgba(58, 68, 53, 0.12);
}

.rm-table th {
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--rm-mist);
  background: rgba(26, 40, 72, 0.04);
}

.rm-table tr:last-child td { border-bottom: 0; }

.rm-cta {
  margin: 2rem 0;
  padding: 1.35rem 1.25rem;
  background: linear-gradient(135deg, rgba(26, 40, 72, 0.95), rgba(38, 103, 153, 0.85));
  color: var(--rm-white);
}

.rm-cta h2 {
  margin: 0 0 0.45rem;
  font-family: var(--rm-serif);
  font-size: 1.35rem;
}

.rm-cta p {
  margin: 0 0 1rem;
  opacity: 0.92;
  max-width: 36rem;
}

.rm-btn {
  display: inline-block;
  padding: 0.7rem 1.15rem;
  background: var(--rm-signal);
  color: #042a2b;
  font-weight: 650;
  text-decoration: none;
}

.rm-btn:hover { filter: brightness(1.05); }

.rm-related {
  margin: 1.5rem 0 0;
}

.rm-related h2 {
  margin: 0 0 0.55rem;
  font-family: var(--rm-serif);
  font-size: 1.2rem;
}

.rm-related ul {
  margin: 0;
  padding-left: 1.15rem;
}

.rm-related a {
  color: var(--rm-ocean);
}

.rm-foot {
  max-width: 980px;
  margin: 0 auto;
  padding: 0 1.25rem 2rem;
  color: var(--rm-moss);
  font-size: 0.88rem;
}

.rm-foot a { color: var(--rm-moss); }

.rm-disclaimer {
  margin-top: 1.5rem;
  font-size: 0.85rem;
  color: var(--rm-mist);
}