:root {
  --paper: #f7f3e9;
  --ink: #211f1f;
  --teal: #2f6f73;
  --rust: #bf5b39;
  --gold: #d4a74a;
  --olive: #7f8f58;
  --night: #1f2a37;
  --card: rgba(255, 255, 255, 0.82);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  font-family: "Trebuchet MS", "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at 20% 10%, rgba(212, 167, 74, 0.3), transparent 35%),
    radial-gradient(circle at 82% 90%, rgba(47, 111, 115, 0.24), transparent 33%),
    linear-gradient(160deg, #f4eee0, #e8dfcc 48%, #ddd1bb);
}

.page-shell {
  width: min(1150px, 100%);
  margin: 0 auto;
  padding: 1rem;
}

.page-header {
  background: var(--card);
  border: 1px solid rgba(31, 42, 55, 0.14);
  border-radius: 16px;
  padding: 1rem;
  box-shadow: 0 16px 35px rgba(31, 42, 55, 0.14);
}

.page-header h1 {
  margin: 0;
  font-size: clamp(1.4rem, 3vw, 2rem);
  letter-spacing: 0.04em;
}

.page-header p {
  margin: 0.5rem 0 0;
  line-height: 1.5;
}

.top-nav {
  margin-top: 0.8rem;
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.top-nav a {
  text-decoration: none;
  color: #fff;
  font-weight: 700;
  background: linear-gradient(180deg, #2f6f73, #24565a);
  padding: 0.42rem 0.72rem;
  border-radius: 999px;
}

.layout {
  margin-top: 1rem;
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 0.9rem;
}

.panel,
.sim-wrap,
.story {
  background: var(--card);
  border: 1px solid rgba(31, 42, 55, 0.14);
  border-radius: 16px;
  box-shadow: 0 14px 26px rgba(31, 42, 55, 0.1);
}

.panel {
  padding: 1rem;
}

.panel h2 {
  margin: 0;
  font-size: 1.02rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.control {
  margin-top: 0.82rem;
}

.control label {
  display: flex;
  justify-content: space-between;
  gap: 0.8rem;
  font-size: 0.95rem;
  font-weight: 700;
}

.control input,
.control select {
  width: 100%;
  margin-top: 0.35rem;
}

.button-row {
  margin-top: 1rem;
  display: flex;
  gap: 0.55rem;
  flex-wrap: wrap;
}

button {
  border: 0;
  border-radius: 999px;
  font-weight: 700;
  padding: 0.45rem 0.8rem;
  cursor: pointer;
  color: #fff;
  background: linear-gradient(180deg, #bf5b39, #95472c);
}

.sim-wrap {
  padding: 0.7rem;
}

canvas.main-canvas {
  width: 100%;
  min-height: 440px;
  height: 62vh;
  display: block;
  border-radius: 12px;
  background: radial-gradient(circle at 50% 50%, #0f1924, #04070d);
}

.status {
  margin-top: 0.5rem;
  font-size: 0.92rem;
  color: #24303f;
}

.preview-art {
  margin-top: 1rem;
  width: 100%;
  border-radius: 12px;
  border: 1px solid rgba(31, 42, 55, 0.22);
}

.wave-grid {
  display: grid;
  gap: 0.65rem;
}

.wave-grid canvas {
  width: 100%;
  min-height: 220px;
  height: 35vh;
  display: block;
  border-radius: 12px;
  background: #0e1722;
}

.story {
  margin-top: 1rem;
  overflow: hidden;
  position: relative;
  height: 260px;
}

.story::before,
.story::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 42px;
  z-index: 2;
  pointer-events: none;
}

.story::before {
  top: 0;
  background: linear-gradient(180deg, rgba(247, 243, 233, 1), rgba(247, 243, 233, 0));
}

.story::after {
  bottom: 0;
  background: linear-gradient(0deg, rgba(247, 243, 233, 1), rgba(247, 243, 233, 0));
}

.text-track {
  padding: 1rem 1rem 1.5rem;
  will-change: transform;
  transform: translate3d(0, 0, 0);
}

.text-track p {
  margin: 0 0 0.8rem;
  line-height: 1.45;
}

.caption {
  margin-top: 0.4rem;
  font-size: 0.85rem;
  color: #39495a;
}

.tile-meta {
  margin-top: 0.85rem;
  font-size: 0.9rem;
  line-height: 1.35;
  color: #2b3a48;
}

.tile-meta p {
  margin: 0.36rem 0;
}

.tile-meta a,
.caption a {
  color: #1e5961;
  font-weight: 700;
}

.mercator-wrap .main-canvas {
  min-height: 340px;
  height: 48vh;
}

.intv-stage-wrap .main-canvas {
  min-height: 360px;
  height: 56vh;
  image-rendering: pixelated;
}

.tile-image-wrap {
  margin-top: 0.65rem;
  border: 1px solid rgba(31, 42, 55, 0.22);
  border-radius: 12px;
  overflow: hidden;
  background: #0d1724;
  min-height: 240px;
  display: grid;
  place-items: center;
}

.tile-image-wrap img {
  width: min(100%, 640px);
  height: auto;
  display: block;
  image-rendering: auto;
}

.debug-box {
  margin-top: 0.85rem;
  border: 1px solid rgba(31, 42, 55, 0.22);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.7);
}

.debug-box summary {
  cursor: pointer;
  padding: 0.5rem 0.65rem;
  font-weight: 700;
  color: #24384b;
}

#debugTrace {
  margin: 0;
  padding: 0.6rem 0.7rem 0.8rem;
  max-height: 220px;
  overflow: auto;
  white-space: pre-wrap;
  word-break: break-word;
  font-size: 0.78rem;
  line-height: 1.35;
  color: #1f2a37;
}

.reader-vertical,
.reader-horizontal {
  border: 1px solid rgba(31, 42, 55, 0.2);
  border-radius: 12px;
  background: linear-gradient(180deg, #faf6ea, #f3ebd9);
}

.reader-vertical {
  height: 58vh;
  min-height: 360px;
  overflow-y: auto;
  scrollbar-width: thin;
}

.article-track {
  padding: 1rem 1rem 1.5rem;
}

.article-track h2 {
  margin: 0;
  font-size: clamp(1.15rem, 2.3vw, 1.6rem);
  letter-spacing: 0.02em;
}

.article-desc {
  margin: 0.5rem 0 0.8rem;
  color: #334354;
  font-style: italic;
}

.article-track p {
  margin: 0 0 0.8rem;
  line-height: 1.5;
}

.article-tail {
  color: #475a6f;
  font-weight: 700;
}

.reader-horizontal {
  height: auto;
  min-height: 260px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  border-radius: 12px;
}

/* ── RSVP ticker styles ─────────────────────────── */
.reader-rsvp {
  border: 1px solid rgba(31, 42, 55, 0.2);
  border-radius: 12px;
  background: #0e1722;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  min-height: 220px;
}

.rsvp-wrap {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  padding: 2rem 2.5rem;
}

.rsvp-orp-marker {
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  height: 2px;
  background: rgba(212, 167, 74, 0.1);
  pointer-events: none;
}

.rsvp-phrase {
  font-size: clamp(1.6rem, 5vw, 2.8rem);
  font-weight: 700;
  color: #f8e8c8;
  text-align: center;
  letter-spacing: 0.04em;
  line-height: 1.25;
  max-width: 700px;
  margin: 0;
  padding: 0;
  opacity: 1;
}

@keyframes rsvpFadeIn {
  from { opacity: 0; transform: scale(0.96); }
  to   { opacity: 1; transform: scale(1); }
}

.rsvp-flash {
  animation: rsvpFadeIn 0.12s ease forwards;
}

.rsvp-footer {
  background: #111d2c;
  padding: 0.5rem 0.8rem;
  display: flex;
  align-items: center;
  gap: 0.7rem;
  border-top: 1px solid rgba(255,255,255,0.06);
}

.rsvp-prog-track {
  flex: 1;
  height: 4px;
  background: rgba(255,255,255,0.1);
  border-radius: 4px;
  overflow: hidden;
}

.rsvp-prog-fill {
  height: 4px;
  background: linear-gradient(90deg, #d4a74a, #f8e8c8);
  border-radius: 4px;
  width: 0%;
  transition: width 0.2s linear;
}

.rsvp-count {
  font-size: 0.78rem;
  color: rgba(248,232,200,0.5);
  min-width: 4.5rem;
  text-align: right;
}

.phrase-track { display: none; }
.phrase-chip  { display: none; }

@media (max-width: 980px) {
  .layout {
    grid-template-columns: 1fr;
  }

  canvas.main-canvas {
    min-height: 360px;
    height: 50vh;
  }
}