:root {
  --bg: #f6f1e6;
  --panel: rgba(255, 252, 246, 0.92);
  --line: #d8cfba;
  --ink: #1f2619;
  --muted: #66705c;
  --green: #2d6a3f;
  --green-soft: #dfeed9;
  --gold-soft: #fbf0c9;
  --brown-soft: #f0e4d3;
  --shadow: 0 18px 36px rgba(43, 46, 29, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: "Hiragino Sans", "Noto Sans JP", sans-serif;
  background: var(--bg);
}

.app-header,
.layout {
  max-width: 980px;
  margin: 0 auto;
}

.app-header {
  padding: 24px 18px 12px;
}

.eyebrow {
  margin: 0 0 6px;
  color: var(--green);
  font-size: 0.74rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.app-header h1 {
  margin: 0;
  font-size: clamp(1.9rem, 3vw, 2.6rem);
  line-height: 1.05;
}

.lead {
  margin: 8px 0 0;
  max-width: 640px;
  color: var(--muted);
  line-height: 1.6;
}

.layout {
  padding: 8px 18px 32px;
}

.map-panel {
  display: grid;
  gap: 14px;
  padding: 16px;
  border: 1px solid rgba(216, 207, 186, 0.9);
  border-radius: 24px;
  background: var(--panel);
  box-shadow: 0 8px 20px rgba(43, 46, 29, 0.06);
}

.start-toggle {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.88);
  color: var(--ink);
  text-align: left;
  cursor: pointer;
}

.start-toggle-label {
  flex: 0 0 auto;
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.start-toggle-summary {
  min-width: 0;
  font-size: 0.95rem;
  font-weight: 700;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.start-toggle.collapsed {
  border-style: dashed;
}

.start-setup {
  display: grid;
  gap: 10px;
}

.start-setup[hidden],
.start-picker[hidden] {
  display: none !important;
}

.scene-panel {
  display: grid;
  gap: 12px;
}

.section-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.section-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.panel-copy {
  display: grid;
  gap: 4px;
}

.panel-label {
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.panel-copy h2 {
  margin: 0;
  font-size: 1.1rem;
  line-height: 1.3;
}

.scene-deck {
  display: grid;
  gap: 10px;
}

.scene-card {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 42px;
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.88);
  text-align: left;
  cursor: pointer;
  color: var(--ink);
}

.scene-card-label {
  font-size: 0.98rem;
  font-weight: 700;
  line-height: 1.2;
}

.card-head {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.info-dot {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  border-radius: 999px;
  background: rgba(31, 38, 25, 0.08);
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 700;
  line-height: 1;
}

.start-picker {
  display: grid;
  gap: 4px;
}

.copy-button {
  flex: 0 0 auto;
  min-height: 34px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.88);
  color: var(--ink);
  cursor: pointer;
}

.copy-button:disabled {
  cursor: default;
  opacity: 0.45;
}

.root-deck {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 6px;
}

.start-picker span,
.kind-label,
.branch-title,
.branch-kind {
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.path-chip,
.branch-card,
.flow-node,
.mindmap-branch,
.scene-card,
.root-card {
  border: 0;
  font: inherit;
}

.root-card {
  width: 100%;
  display: grid;
  gap: 2px;
  min-height: 50px;
  padding: 8px 9px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.88);
  text-align: left;
  color: var(--ink);
  cursor: pointer;
}

.root-card.active {
  border-color: var(--green);
  box-shadow: inset 0 0 0 1px rgba(45, 106, 63, 0.18);
}

.root-card strong {
  font-size: 0.84rem;
  line-height: 1.2;
}

.root-card span {
  color: var(--muted);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.path-bar {
  display: flex;
  gap: 6px;
  align-items: center;
  overflow-x: auto;
  padding: 10px 0 2px;
}

.saved-flows-board[hidden] {
  display: none !important;
}

.saved-flows-board {
  display: grid;
  gap: 8px;
}

.saved-flows-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.saved-flows-list {
  display: grid;
  gap: 8px;
}

.saved-flow-item {
  width: 100%;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto auto;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.88);
  color: var(--ink);
  text-align: left;
  cursor: pointer;
}

.saved-flow-text {
  min-width: 0;
  font-size: 0.9rem;
  line-height: 1.4;
}

.saved-flow-meta {
  color: var(--muted);
  font-size: 0.74rem;
  white-space: nowrap;
}

.saved-flow-remove {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 999px;
  background: rgba(31, 38, 25, 0.08);
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1;
}

.section-label {
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.path-chip {
  flex: 0 0 auto;
  min-height: 34px;
  padding: 7px 10px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.9);
  color: var(--ink);
  cursor: pointer;
  white-space: nowrap;
}

.path-chip.active {
  background: var(--green);
  border-color: var(--green);
  color: #fff;
}

.scene-chip {
  background: rgba(31, 38, 25, 0.06);
  border-style: dashed;
}

.path-arrow {
  flex: 0 0 auto;
  color: var(--muted);
  font-size: 0.8rem;
}

.map-board {
  min-height: 420px;
  overflow-x: auto;
}

.mindmap-board {
  min-width: max-content;
  padding: 8px 4px 12px;
}

.mobile-flow-stack,
.mobile-branch-panel {
  display: none;
}

.mindmap-path-lane {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.flow-node {
  width: 168px;
  min-height: 88px;
  display: grid;
  gap: 6px;
  align-content: start;
  padding: 12px;
  border-radius: 18px;
  border: 1px solid var(--line);
  background: #fff;
  text-align: left;
  color: var(--ink);
  cursor: pointer;
}

.flow-node.current {
  border-color: var(--green);
  box-shadow: 0 0 0 2px rgba(45, 106, 63, 0.12);
}

.flow-node strong {
  font-size: 1rem;
  line-height: 1.25;
}

.flow-node-kind {
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.flow-connector {
  width: 42px;
  min-height: 88px;
  display: grid;
  place-items: center;
  gap: 4px;
}

.flow-line {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--line);
}

.flow-arrow {
  color: var(--muted);
  font-size: 1rem;
}

.mindmap-branch-column {
  width: 220px;
  display: grid;
  gap: 8px;
}

.mindmap-branch-stack {
  display: grid;
  gap: 10px;
}

.mindmap-branch {
  width: 100%;
  display: grid;
  gap: 6px;
  padding: 10px;
  border-radius: 16px;
  border: 1px solid var(--line);
  background: #fff;
  text-align: left;
  cursor: pointer;
  justify-items: start;
}

.branch-card {
  width: 100%;
  display: grid;
  gap: 10px;
  padding: 16px;
  border-radius: 20px;
  border: 1px solid var(--line);
  background: #fff;
  text-align: left;
  cursor: pointer;
}

.branch-card.recommended {
  border-width: 2px;
}

.branch-card.type-main,
.mindmap-branch.type-main {
  border-color: var(--green);
}

.branch-card.type-safety,
.mindmap-branch.type-safety {
  border-color: #d9c27c;
}

.branch-card.type-mist,
.mindmap-branch.type-mist {
  border-color: #ccae8b;
}

.branch-key {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 28px;
  height: 28px;
  padding: 0 8px;
  border-radius: 999px;
  background: rgba(31, 38, 25, 0.08);
  color: var(--ink);
  font-size: 0.72rem;
  font-weight: 700;
}

.branch-head-left {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.focus-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 24px;
  padding: 0 8px;
  border-radius: 999px;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.focus-pill.focus-back_direct,
.focus-pill.focus-back_route {
  background: #e2eefb;
  color: #275b8e;
}

.focus-pill.focus-finish_direct,
.focus-pill.focus-finish_route {
  background: #f5e4d8;
  color: #8a4b28;
}

.focus-pill.focus-back_direct,
.focus-pill.focus-finish_direct {
  box-shadow: inset 0 0 0 1px rgba(31, 38, 25, 0.14);
}

.focus-pill.focus-sweep {
  background: #e1f0df;
  color: #2c6a3f;
}

.focus-pill.focus-neutral {
  background: rgba(31, 38, 25, 0.08);
  color: var(--muted);
}

.type-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 0.76rem;
  font-weight: 700;
}

.type-pill.type-main {
  background: var(--green-soft);
  color: var(--green);
}

.type-pill.type-safety {
  background: var(--gold-soft);
  color: #7d5e17;
}

.type-pill.type-mist {
  background: var(--brown-soft);
  color: #7b5936;
}

.branch-technique {
  font-size: 1rem;
  line-height: 1.2;
  letter-spacing: 0.01em;
}

.branch-empty {
  padding: 18px;
  border-radius: 18px;
  border: 1px dashed var(--line);
  color: var(--muted);
  background: rgba(255, 255, 255, 0.72);
}

.merge-strip {
  display: grid;
  gap: 8px;
}

.merge-label {
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.merge-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.merge-chip {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.92);
  color: var(--ink);
  font-size: 0.84rem;
}

.hover-card {
  position: absolute;
  z-index: 50;
  width: min(320px, calc(100vw - 24px));
  display: grid;
  gap: 8px;
  padding: 12px;
  border: 1px solid rgba(31, 38, 25, 0.12);
  border-radius: 14px;
  background: rgba(255, 253, 248, 0.98);
  box-shadow: 0 18px 32px rgba(24, 29, 18, 0.16);
  pointer-events: none;
}

.hover-card[hidden] {
  display: none;
}

.hover-card-title {
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.2;
}

.hover-card-body {
  display: grid;
  gap: 8px;
}

.hover-card-row {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 8px;
  align-items: start;
}

.hover-card-label {
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.hover-card-text {
  color: var(--ink);
  font-size: 0.88rem;
  line-height: 1.45;
}

@media (min-width: 720px) {
  .scene-deck {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 720px) {
  .app-header,
  .layout {
    padding-left: 14px;
    padding-right: 14px;
  }

  .map-panel {
    padding: 14px;
    border-radius: 20px;
  }

  .start-picker {
    width: 100%;
  }

  .root-deck {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 6px;
  }

  .section-actions {
    width: 100%;
    justify-content: flex-end;
    flex-wrap: wrap;
  }

  .saved-flow-item {
    grid-template-columns: minmax(0, 1fr) auto;
  }

  .saved-flow-meta {
    grid-column: 1 / 2;
  }

  .saved-flow-remove {
    grid-column: 2 / 3;
    grid-row: 1 / 3;
  }

  .mindmap-path-lane {
    display: none;
  }

  .mobile-flow-stack {
    display: grid;
    gap: 8px;
  }

  .mobile-flow-connector {
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--muted);
    font-size: 1rem;
    line-height: 1;
  }

  .mobile-branch-panel {
    display: grid;
    gap: 10px;
    margin-top: 12px;
  }

  .mobile-branch-empty {
    margin-top: 0;
  }

  .flow-node {
    width: 100%;
    min-height: 76px;
    padding: 10px;
    border-radius: 16px;
  }

  .flow-connector {
    width: 34px;
    min-height: 76px;
  }

  .mindmap-branch-column {
    width: 100%;
  }

  .mindmap-board {
    min-width: 0;
    width: 100%;
    padding: 4px 0 8px;
  }

  .map-board {
    min-height: 0;
    overflow-x: visible;
  }
}

@media (max-width: 420px) {
  .app-header {
    padding-top: calc(18px + env(safe-area-inset-top, 0));
  }

  .map-panel {
    padding: 12px;
    border-radius: 18px;
  }
}