/* stations.css — page layout: sidebar, hero, per-station rhythm, responsive.
   base.css owns tokens + reusable components; this owns the page shell. */

/* ---------- sidebar ---------- */

.sidebar {
  position: fixed;
  top: 0; left: 0;
  width: var(--sidebar-w);
  height: 100vh;
  padding: 34px 22px;
  background: var(--bg-surface);
  border-right: 1px solid var(--rule);
  overflow-y: auto;
  z-index: 50;
}
.sidebar-title {
  font-family: var(--display);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.01em;
  display: block;
  color: var(--text-primary);
  margin-bottom: 4px;
}
.sidebar-title:hover { text-decoration: none; color: var(--accent); }
.sidebar-eyebrow {
  font-family: var(--mono);
  font-size: 10.5px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--text-muted);
  margin-bottom: 24px;
}
.toc { list-style: none; counter-reset: none; }
.toc li { margin: 1px 0; }
.toc a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 7px 10px;
  border-left: 2px solid transparent;
  border-radius: 0 6px 6px 0;
  font-size: 13.5px;
  color: var(--text-secondary);
  line-height: 1.35;
}
.toc a:hover { background: var(--bg-hover); text-decoration: none; }
.toc a.active {
  border-left-color: var(--accent);
  color: var(--accent);
  background: color-mix(in srgb, var(--accent) 9%, transparent);
}
.toc .toc-n {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text-muted);
  flex: none;
}
.toc a.active .toc-n { color: var(--accent); }

.sidebar-foot { margin-top: 34px; padding-top: 18px; border-top: 1px solid var(--rule); }
.legend-title {
  font-family: var(--mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--text-muted);
  margin-bottom: 12px;
}
.legend { list-style: none; display: flex; flex-direction: column; gap: 7px; }
.legend li {
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
}
/* legend swatches inherit color from the molecule class on the span */

.menu-toggle {
  display: none;
  position: fixed;
  top: 12px; right: 12px;
  z-index: 60;
  background: var(--bg-elevated);
  border: 1px solid var(--rule-strong);
  color: var(--text-primary);
  border-radius: 8px;
  padding: 8px 12px;
  font-family: var(--mono);
  font-size: 12.5px;
  cursor: pointer;
}

/* ---------- page + content column ---------- */

.page { margin-left: var(--sidebar-w); padding: 0 48px 40px; }
article { max-width: var(--content-max); margin: 0 auto; }

/* wide interactives escape the prose column, centered on it */
.wide, .interactive.wide {
  width: min(var(--stage-max), calc(100vw - var(--sidebar-w) - 112px));
  margin-left: 50%;
  transform: translateX(-50%);
}

/* ---------- hero ---------- */

.hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
  margin: 0 -48px;
}
.hero-canvas { position: absolute; inset: 0; width: 100%; height: 100%; z-index: 0; }
.hero-inner {
  position: relative;
  z-index: 1;
  padding: 60px 24px;
  max-width: 720px;
  background: radial-gradient(ellipse 62% 58% at center,
    rgba(4, 16, 11, 0.82), rgba(4, 16, 11, 0.4) 55%, transparent 78%);
}
.hero-eyebrow {
  font-family: var(--mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--accent);
  margin-bottom: 18px;
}
.hero-title {
  font-family: var(--display);
  font-size: 74px;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.02;
  margin: 0 0 20px;
  text-shadow: 0 0 70px rgba(74, 222, 128, 0.4);
}
.hero-sub {
  font-size: 18.5px;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 26px;
}
.hero-sub em { color: var(--accent-2); font-style: italic; }
.hero-equation {
  font-family: var(--mono);
  font-size: 17px;
  letter-spacing: 0.01em;
  margin: 0 auto 30px;
  padding: 14px 18px;
  display: inline-block;
  border: 1px solid var(--rule-strong);
  border-radius: 12px;
  background: color-mix(in srgb, var(--bg-surface) 70%, transparent);
}
.hero-cta {
  font-family: var(--mono);
  font-size: 14px;
  padding: 12px 24px;
  border-radius: 99px;
  border: 1px solid var(--accent);
  color: var(--accent);
  background: color-mix(in srgb, var(--accent) 10%, transparent);
  transition: box-shadow 0.16s, background 0.16s;
}
.hero-cta:hover { text-decoration: none; box-shadow: 0 0 28px -6px var(--accent); background: color-mix(in srgb, var(--accent) 18%, transparent); }
.hero-scroll-hint {
  position: absolute;
  bottom: 22px; left: 50%;
  transform: translateX(-50%);
  z-index: 1;
  font-family: var(--mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--text-muted);
  animation: bob 2.4s ease-in-out infinite;
}
@keyframes bob { 0%,100% { transform: translateX(-50%) translateY(0); } 50% { transform: translateX(-50%) translateY(6px); } }

/* ---------- stations ---------- */

.station { padding: 78px 0 20px; scroll-margin-top: 12px; }
.station-head { margin-bottom: 10px; }
.eyebrow {
  font-family: var(--mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--accent);
  margin-bottom: 12px;
}
.station h2 {
  font-family: var(--display);
  font-size: 38px;
  font-weight: 700;
  letter-spacing: -0.015em;
  line-height: 1.1;
  scroll-margin-top: 24px;
}
.section-number {
  font-family: var(--mono);
  font-size: 0.5em;
  font-weight: 500;
  color: var(--accent);
  opacity: 0.7;
  margin-right: 14px;
  vertical-align: 0.3em;
}

/* ---------- responsive ---------- */

@media (max-width: 900px) {
  .sidebar {
    transform: translateX(-100%);
    transition: transform 0.2s ease;
    width: min(300px, 86vw);
  }
  .sidebar.open { transform: translateX(0); box-shadow: 0 0 60px rgba(0,0,0,0.6); }
  .menu-toggle { display: block; }

  .page { margin-left: 0; padding: 0 18px 40px; }
  .hero { margin: 0 -18px; min-height: 88vh; }
  .hero-title { font-size: 44px; }
  .hero-sub { font-size: 16px; }
  .hero-equation { font-size: 13px; padding: 10px 12px; }

  .station { padding: 54px 0 16px; }
  .station h2 { font-size: 27px; }
  .section-number { margin-right: 8px; }

  .wide, .interactive.wide { width: 100%; margin-left: 0; transform: none; }
  .interactive { padding: 16px 14px; }
  .interactive-controls { gap: 12px 18px; }
  input[type="range"] { width: 150px; }
  .readout-grid { gap: 16px; }
}