/* ===== CHAIN ===== */
.chain {
  padding: 120px 0;
  border-bottom: 1px solid var(--line);
}

.chain-stage {
  margin-top: 48px;
  background: var(--bg-elev);
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  padding: 32px 28px 36px;
  position: relative;
  overflow: hidden;
}
.chain-stage::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(244,241,234,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(244,241,234,0.025) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
}

.chain-controls {
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px;
  margin-bottom: 32px;
  position: relative;
  flex-wrap: wrap;
}
.cc-btn {
  appearance: none;
  background: var(--attack);
  border: 1px solid var(--attack);
  color: var(--bg);
  padding: 10px 16px;
  border-radius: 2px;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  cursor: pointer;
  display: inline-flex; align-items: center; gap: 10px;
  transition: all 0.18s;
}
.cc-btn:hover { background: transparent; color: var(--attack); }
.cc-speed { display: inline-flex; gap: 2px; border: 1px solid var(--line-strong); border-radius: 2px; padding: 2px; }
.cc-speed button {
  appearance: none;
  background: transparent;
  border: none;
  color: var(--ink-mute);
  font-family: var(--mono);
  font-size: 11px;
  padding: 6px 10px;
  cursor: pointer;
  border-radius: 2px;
  font-weight: 500;
  letter-spacing: 0.04em;
  transition: color 0.15s, background 0.15s;
}
.cc-speed button.active {
  background: var(--bg-card);
  color: var(--ink);
}
.cc-speed button:hover { color: var(--ink); }

/* Rail */
.chain-rail {
  position: relative;
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 0;
  padding: 20px 0 24px;
  margin-bottom: 28px;
}
.chain-rail::before {
  content: "";
  position: absolute;
  left: 8%; right: 8%; top: calc(50% - 1px);
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--line-strong) 8%, var(--line-strong) 92%, transparent);
}
/* progress pulse */
.chain-rail::after {
  content: "";
  position: absolute;
  left: 8%;
  top: calc(50% - 1.5px);
  height: 3px;
  width: var(--progress, 0%);
  background: linear-gradient(90deg, var(--attack) 0%, var(--attack-2) 100%);
  box-shadow: 0 0 12px var(--attack), 0 0 24px rgba(232,93,36,0.4);
  transition: width 0.18s linear;
  max-width: 84%;
  border-radius: 2px;
}
.phase-node {
  position: relative;
  display: flex; flex-direction: column;
  align-items: center;
  padding: 28px 8px;
  cursor: pointer;
  z-index: 2;
}
.phase-node .pn-ring {
  width: 54px; height: 54px;
  border: 1.5px solid var(--line-strong);
  background: var(--bg);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--serif);
  font-weight: 400;
  font-size: 20px;
  color: var(--ink-dim);
  transition: all 0.25s cubic-bezier(.22,.7,.28,1);
  position: relative;
}
.phase-node .pn-ring::after {
  content: "";
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  border: 1px solid var(--attack);
  opacity: 0;
  transition: opacity 0.25s;
}
.phase-node.reached .pn-ring {
  border-color: var(--attack);
  color: var(--attack);
}
.phase-node.current .pn-ring {
  border-color: var(--attack);
  background: var(--attack);
  color: var(--bg);
  box-shadow: 0 0 20px rgba(232,93,36,0.5);
  transform: scale(1.15);
}
.phase-node.current .pn-ring::after {
  opacity: 1;
  animation: ringPulse 1.4s ease-out infinite;
}
@keyframes ringPulse {
  0% { transform: scale(1); opacity: 0.6; }
  100% { transform: scale(1.8); opacity: 0; }
}
.phase-node.selected .pn-ring {
  border-width: 2.5px;
  box-shadow: 0 0 0 3px var(--bg), 0 0 0 4px var(--attack);
}
.phase-node .pn-label {
  margin-top: 14px;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink-dim);
  letter-spacing: 0.04em;
  text-align: center;
  transition: color 0.18s;
}
.phase-node .pn-sub {
  margin-top: 4px;
  font-family: var(--mono);
  font-size: 10px;
  color: var(--ink-mute);
  letter-spacing: 0.02em;
  text-align: center;
}
.phase-node:hover .pn-label { color: var(--ink); }
.phase-node.selected .pn-label { color: var(--attack); }

@media (max-width: 800px) {
  .chain-rail { grid-template-columns: repeat(3, 1fr); gap: 12px 0; }
  .chain-rail::before, .chain-rail::after { display: none; }
  .phase-node .pn-ring { width: 44px; height: 44px; font-size: 16px; }
  .phase-node .pn-label { font-size: 10px; }
  .phase-node .pn-sub { display: none; }
}

/* Detail panel */
.chain-detail {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 32px 32px 28px;
  min-height: 320px;
}
.cd-head {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 24px;
  align-items: start;
  margin-bottom: 28px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--line);
}
.cd-num {
  font-family: var(--serif);
  font-weight: 300;
  font-size: 52px;
  line-height: 1;
  color: var(--attack);
  opacity: 0.4;
  font-variation-settings: "opsz" 144;
}
.cd-title-block { }
.cd-eyebrow {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--attack);
  margin-bottom: 10px;
}
.cd-title {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(28px, 3.2vw, 40px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--ink);
  margin-bottom: 10px;
  font-variation-settings: "opsz" 144;
}
.cd-desc {
  font-size: 15px;
  line-height: 1.6;
  color: var(--ink-dim);
  max-width: 600px;
}

/* TTD indicator */
.cd-ttd {
  text-align: right;
  font-family: var(--mono);
  min-width: 140px;
}
.cd-ttd-lbl {
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin-bottom: 6px;
}
.cd-ttd-val {
  font-size: 22px;
  color: var(--ink);
  font-weight: 500;
  margin-bottom: 6px;
  letter-spacing: 0.02em;
}
.cd-ttd-val.ok { color: var(--defense); }
.cd-ttd-val.warn { color: var(--warn); }
.cd-ttd-val.crit { color: var(--err); }
.cd-ttd-bar {
  height: 3px;
  background: var(--line-strong);
  border-radius: 2px;
  overflow: hidden;
  margin-bottom: 6px;
}
.cd-ttd-bar-fill {
  height: 100%;
  background: var(--ttd-color, var(--attack));
  box-shadow: 0 0 8px var(--ttd-color, var(--attack));
  transition: width 0.5s cubic-bezier(.22,.7,.28,1);
}
.cd-ttd-note {
  font-size: 10px;
  color: var(--ink-mute);
  letter-spacing: 0.02em;
}

.cd-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}
@media (max-width: 760px) {
  .cd-grid { grid-template-columns: 1fr; }
  .cd-head { grid-template-columns: 1fr; }
  .cd-ttd { text-align: left; }
}
.cd-card {
  padding: 18px 20px;
  border-radius: 3px;
  border: 1px solid var(--line-strong);
  background: var(--bg-elev);
  position: relative;
}
.cd-card.atk { border-left: 2px solid var(--attack); }
.cd-card.def { border-left: 2px solid var(--defense); }
.cd-card h4 {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.cd-card.atk h4 { color: var(--attack); }
.cd-card.def h4 { color: var(--defense); }
.cd-card h4::before {
  content: ""; width: 5px; height: 5px; border-radius: 50%;
}
.cd-card.atk h4::before { background: var(--attack); box-shadow: 0 0 6px var(--attack); }
.cd-card.def h4::before { background: var(--defense); box-shadow: 0 0 6px var(--defense); }
.cd-card ul { list-style: none; font-size: 13px; line-height: 1.55; }
.cd-card ul li {
  padding: 8px 0 8px 14px;
  border-bottom: 1px solid var(--line);
  position: relative;
  color: var(--ink);
}
.cd-card ul li:last-child { border-bottom: none; }
.cd-card ul li::before {
  content: ""; position: absolute;
  left: 0; top: 16px;
  width: 6px; height: 1px;
  background: var(--ink-mute);
}
.cd-card ul li em {
  display: block;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink-dim);
  font-style: normal;
  margin-top: 2px;
  letter-spacing: 0.02em;
}

.cd-fade-in { animation: cdFade 0.35s cubic-bezier(.22,.7,.28,1); }
@keyframes cdFade {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}