/* story.css — nguyen-citadels overview/stepper page ("index.html")
   Register: LIGHT / warm ground, same paper+ink+type system as atlas.css /
   fort.css. This page is the front door: a 3-step click-stepper, graceful
   without JS (all steps are stacked <section>s in the DOM; JS just adds the
   counter/prev/next affordance and hides steps other than the current one). */

:root {
  --paper: #f4efe4;
  --paper-raised: #ede5d3;
  --ink: #2b2420;
  --ink-soft: #6b5f52;
  --rule: #d8cbb3;
  --accent-gold: #e8c37a;
  --font-display: "Alegreya", Georgia, serif;
  --font-body: "Lora", Georgia, serif;
  --font-ui: "Be Vietnam Pro", "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  line-height: 1.55;
}

a { color: #7a4a1f; }
a:hover { color: #a5642a; }

.site-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem clamp(1rem, 4vw, 3rem);
  border-bottom: 1px solid var(--rule);
  font-family: var(--font-ui);
  font-size: 0.85rem;
  letter-spacing: 0.02em;
}

.site-nav a { text-decoration: none; color: var(--ink-soft); }
.site-nav a:hover, .site-nav a.current { color: var(--ink); }

/* --- Hero --- */
.story-hero {
  max-width: 44rem;
  margin: 0 auto;
  padding: clamp(2rem, 7vw, 4.5rem) clamp(1rem, 4vw, 3rem) 1rem;
  text-align: center;
}

.story-hero .eyebrow {
  font-family: var(--font-ui);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--ink-soft);
  margin: 0 0 0.6rem;
}

.story-hero h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.2rem, 7vw, 3.6rem);
  margin: 0 0 0.8rem;
  line-height: 1.05;
}

.story-hero .lede {
  color: var(--ink-soft);
  font-size: 1.08rem;
  margin: 0 auto;
}

/* --- Stepper: stacked steps, JS toggles which is visible --- */
.stepper {
  max-width: 68rem;
  margin: 0 auto;
  padding: 1rem clamp(1rem, 4vw, 3rem) 2rem;
}

.step {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: clamp(1.5rem, 4vw, 3rem);
  align-items: center;
  padding: clamp(2rem, 5vw, 3.5rem) 0;
  border-bottom: 1px solid var(--rule);
}

.step:last-child { border-bottom: none; }

/* JS-enhanced mode: only the active step shows. Without JS, all steps stack
   (graceful degradation) and .stepper-controls is simply absent/inert. */
.js-stepper .step { display: none; }
.js-stepper .step.is-active { display: grid; }

.step-media {
  background: var(--paper-raised);
  border: 1px solid var(--rule);
  border-radius: 8px;
  padding: 1rem;
  min-height: 260px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
}

.step-text .step-eyebrow {
  font-family: var(--font-ui);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--ink-soft);
  margin: 0 0 0.4rem;
}

.step-text h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.5rem, 3.4vw, 2.1rem);
  margin: 0 0 0.7rem;
  line-height: 1.15;
}

.step-text p { margin: 0 0 0.9rem; color: var(--ink); }
.step-text p:last-of-type { margin-bottom: 0; }

.cta {
  display: inline-block;
  margin-top: 0.6rem;
  font-family: var(--font-ui);
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  color: #fff;
  background: #7a4a1f;
  padding: 0.65rem 1.2rem;
  border-radius: 999px;
  transition: background 0.15s ease;
}
.cta:hover { background: #a5642a; color: #fff; }

/* --- Star-fort diagram (step 1) --- */
#star-fort-diagram { width: 100%; max-width: 320px; height: auto; }
.moat { fill: none; stroke: var(--rule); stroke-width: 3; }
.star-wall {
  fill: rgba(232, 195, 122, 0.18);
  stroke: var(--accent-gold);
  stroke-width: 3;
  stroke-linejoin: round;
}
.citadel-core { fill: var(--paper); stroke: var(--ink-soft); stroke-width: 1.5; }

/* --- Network / fate maps (steps 2 & 3) --- */
#network-map, #fate-map {
  width: 100%;
  height: min(50vh, 360px);
  min-height: 260px;
  border-radius: 6px;
  overflow: hidden;
  border: 1px solid var(--rule);
  background: #e9e0cc;
}

.map-caption {
  font-family: var(--font-ui);
  font-size: 0.82rem;
  color: var(--ink-soft);
  margin: 0;
  text-align: center;
}

.legend {
  list-style: none;
  margin: 0.2rem 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.4rem 1.1rem;
  font-family: var(--font-ui);
  font-size: 0.8rem;
  color: var(--ink-soft);
}

.legend li { display: flex; align-items: center; gap: 0.4rem; }
.legend .swatch {
  width: 0.7rem;
  height: 0.7rem;
  border-radius: 50%;
  display: inline-block;
  border: 1px solid rgba(43, 36, 32, 0.3);
}

/* --- Stepper controls --- */
.stepper-controls {
  position: sticky;
  bottom: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.2rem;
  padding: 0.8rem clamp(1rem, 4vw, 3rem);
  background: var(--paper);
  border-top: 1px solid var(--rule);
  font-family: var(--font-ui);
}

.step-btn {
  font-family: var(--font-ui);
  font-weight: 600;
  font-size: 0.9rem;
  padding: 0.55rem 1.1rem;
  border-radius: 999px;
  border: 1px solid var(--rule);
  background: var(--paper-raised);
  color: var(--ink);
  cursor: pointer;
  transition: background 0.15s ease, opacity 0.15s ease;
}

.step-btn:hover:not(:disabled) { background: #e2d6ba; }
.step-btn:disabled { opacity: 0.4; cursor: default; }

.step-counter {
  font-size: 0.85rem;
  color: var(--ink-soft);
  min-width: 7rem;
  text-align: center;
}

@media (max-width: 780px) {
  .step { grid-template-columns: 1fr; }
  .stepper-controls { gap: 0.8rem; }
}