:root {
  --accent-strong: #ecd49a;
  --accent-deep: #c4a85e;
  --accent-soft: rgba(226, 200, 126, 0.15);
  --danger: #d45a5a;
  --border-strong: rgba(100, 114, 83, 0.5);
  --font-body: var(--font-sans);
  --board-ink: rgba(29, 26, 22, 0.72);
  --board-ink-soft: rgba(29, 26, 22, 0.28);
  --board-ink-faint: rgba(29, 26, 22, 0.14);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-body);
  color: var(--color-text);
  background:
    radial-gradient(circle at 14% -8%, rgba(226, 200, 126, 0.08), transparent 45%),
    radial-gradient(circle at 86% 8%, rgba(122, 138, 90, 0.1), transparent 32%),
    var(--color-bg);
}

.app-header {
  background: rgba(31, 40, 27, 0.9);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-line);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-xs) var(--space-sm);
}

.title-block {
  border-radius: var(--radius-md);
  border: 1px solid var(--border-strong);
  background: linear-gradient(150deg, var(--color-surface-alt), var(--color-surface));
  box-shadow: var(--shadow-sm);
  padding: 0.75rem 1.2rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  animation: float-in 0.6s ease both;
}

.title-block h1 {
  margin: 0;
  font-family: var(--font-heading);
  font-size: clamp(1.8rem, 3vw, 2.4rem);
}

.subtitle {
  margin: 0.1rem 0 0;
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

.back-link {
  display: inline-block;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--color-accent);
  text-decoration: none;
}

.back-link:hover {
  color: var(--accent-deep);
  text-decoration: underline;
}

.app-main {
  display: grid;
  grid-template-columns: clamp(220px, 19vw, 320px) minmax(0, 1fr) clamp(210px, 18vw, 290px);
  gap: var(--space-sm);
  padding: var(--space-sm);
  min-height: calc(100vh - 88px);
}

.panel {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  padding: 1.3rem 1.3rem 1.45rem;
  display: grid;
  gap: 1rem;
  min-height: 0;
  animation: float-in 0.7s ease both;
}

.control-panel {
  overflow-y: auto;
  align-content: start;
}

.log-panel,
.legend-panel {
  overflow: hidden;
}

.right-panels-col {
  display: grid;
  grid-template-rows: minmax(0, 1.2fr) minmax(0, 0.9fr);
  gap: var(--space-sm);
}

.workspace-panel {
  background: transparent;
  border: none;
  box-shadow: none;
  padding: var(--space-xs) 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.workspace-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
  flex-wrap: wrap;
}

.section-kicker,
.panel-title {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.workspace-title {
  font-size: 1rem;
  color: var(--color-text);
  margin-top: 0.15rem;
}

.active-tool-label {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
  background: rgba(226, 200, 126, 0.12);
  padding: 0.4rem 0.7rem;
  border-radius: 999px;
  min-height: 2rem;
  display: inline-flex;
  align-items: center;
}

.workspace-meta {
  display: flex;
  justify-content: center;
}

.status-message {
  padding: 0.65rem 0.85rem;
  border-radius: 10px;
  background: rgba(226, 200, 126, 0.1);
  border: 1px solid rgba(226, 200, 126, 0.5);
  color: var(--color-accent);
  font-weight: 700;
  line-height: 1.3;
  width: min(100%, 44rem);
  text-align: center;
}

.board-wrap {
  flex: 1;
  min-height: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.board-shell {
  width: min(100%, 52rem);
  aspect-ratio: 1 / 1;
  background: #ffffff;
  border: 1px solid rgba(29, 26, 22, 0.2);
  box-shadow: 0 30px 60px rgba(0, 0, 0, 0.2);
}

#board {
  width: 100%;
  height: 100%;
  display: block;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(248, 246, 240, 0.98));
}

.panel-block {
  display: grid;
  gap: 0.8rem;
  padding-bottom: 1rem;
  border-bottom: 1px dashed var(--color-line);
}

.panel-block:last-child {
  padding-bottom: 0;
  border-bottom: none;
}

.button-stack,
.button-grid,
.slider-stack {
  display: grid;
  gap: 0.6rem;
}

.button-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.phase-result {
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--color-text);
  padding: 0.6rem 0.8rem;
  border-radius: 10px;
  background: rgba(226, 200, 126, 0.08);
  border: 1px solid rgba(226, 200, 126, 0.25);
}

.panel-subtitle {
  font-size: 0.78rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.phase-block[hidden] {
  display: none !important;
}

.slider-label {
  font-size: 0.86rem;
  color: var(--color-text);
}

.slider-value {
  font-size: 0.78rem;
  color: var(--color-text-muted);
}

input[type="range"] {
  width: 100%;
  accent-color: var(--color-accent);
}

button {
  position: relative;
  border: none;
  padding: 0.78rem 1rem;
  border-radius: 10px;
  font-weight: 700;
  font-family: var(--font-body);
  font-size: 0.92rem;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

button.primary {
  background: linear-gradient(145deg, var(--color-accent), #c4a85e);
  color: var(--color-bg);
  box-shadow: var(--shadow-sm);
}

button.primary:hover:not(:disabled),
button.secondary:hover:not(:disabled),
button.danger:hover:not(:disabled) {
  transform: translateY(-1px);
}

button.secondary {
  background: var(--color-surface-alt);
  color: var(--color-text);
  border: 1px solid var(--color-line);
}

button.secondary.active {
  background: linear-gradient(145deg, var(--color-accent), #c4a85e);
  color: var(--color-bg);
  box-shadow: 0 0 0 2px rgba(226, 200, 126, 0.3);
}

button.danger {
  color: #f3c4c4;
  border: 1px solid rgba(212, 90, 90, 0.45);
  background: rgba(212, 90, 90, 0.12);
}

button:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

button:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  transform: none;
}

.roll-log,
.legend-list {
  overflow-y: auto;
  min-height: 0;
  display: grid;
  gap: 0.6rem;
}

.log-item,
.legend-item {
  border-radius: 10px;
  border: 1px solid rgba(100, 114, 83, 0.45);
  background: rgba(255, 255, 255, 0.03);
  padding: 0.7rem 0.8rem;
}

.log-item {
  display: grid;
  gap: 0.18rem;
}

.log-item.summary {
  background: rgba(226, 200, 126, 0.1);
  border-color: rgba(226, 200, 126, 0.3);
}

.log-main {
  color: var(--color-text);
  font-weight: 700;
}

.log-meta {
  color: var(--color-text-muted);
  font-size: 0.8rem;
}

.log-repeat {
  color: var(--color-accent);
}

.legend-item {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 0.7rem;
}

.legend-line {
  width: 2.6rem;
  height: 0;
  border-top-style: solid;
  border-top-color: rgba(29, 26, 22, 0.75);
}

.legend-label {
  font-size: 0.86rem;
  color: var(--color-text);
}

.legend-meta {
  font-size: 0.74rem;
  color: var(--color-text-muted);
}

.legend-item.pending {
  opacity: 0.8;
}

.empty-state {
  border: 1px dashed rgba(100, 114, 83, 0.55);
  border-radius: 10px;
  padding: 0.9rem;
  color: var(--color-text-muted);
  background: rgba(255, 255, 255, 0.02);
}

.board-grid {
  stroke: var(--board-ink-faint);
  stroke-width: 0.22;
  vector-effect: non-scaling-stroke;
}

.board-border {
  fill: none;
  stroke: rgba(29, 26, 22, 0.28);
  stroke-width: 0.8;
  vector-effect: non-scaling-stroke;
}

.contour-band {
  fill: rgba(29, 26, 22, 0.03);
  stroke: none;
}

.gradient-layer rect {
  shape-rendering: crispEdges;
}

.contour-line {
  fill: none;
  stroke: rgba(29, 26, 22, 0.58);
  stroke-linecap: round;
  stroke-linejoin: round;
  vector-effect: non-scaling-stroke;
}

.contour-line.index {
  stroke: rgba(29, 26, 22, 0.82);
}

.hit-dot {
  fill: rgba(29, 26, 22, 0.4);
}

.flash-cell {
  fill: rgba(226, 200, 126, 0.25);
  stroke: rgba(226, 200, 126, 0.8);
  stroke-width: 0.6;
  vector-effect: non-scaling-stroke;
  animation: cell-flash 0.3s ease-out forwards;
}

@keyframes float-in {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes cell-flash {
  from {
    opacity: 1;
  }
  to {
    opacity: 0;
  }
}

::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: var(--color-olive-deep);
}

::-webkit-scrollbar-thumb {
  background: var(--color-line);
  border-radius: 999px;
}

@media (max-width: 1180px) {
  .app-main {
    grid-template-columns: minmax(0, 1fr);
  }

  .board-shell {
    width: min(100%, 28rem);
    margin: 0 auto;
  }

  .right-panels-col {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    grid-template-rows: none;
  }
}

@media (max-width: 720px) {
  .app-header,
  .app-main {
    padding: var(--space-xs);
  }

  .title-block {
    width: 100%;
    align-items: flex-start;
    flex-direction: column;
  }

  .workspace-header {
    justify-content: center;
    text-align: center;
  }

  .right-panels-col {
    grid-template-columns: minmax(0, 1fr);
  }

  .legend-item {
    grid-template-columns: auto 1fr;
  }

  .legend-meta {
    grid-column: 1 / -1;
  }
}

@media print {
  body {
    background: #fff;
    color: #111;
  }

  .app-header,
  .control-panel,
  .right-panels-col,
  .workspace-meta,
  .active-tool-label {
    display: none !important;
  }

  .app-main {
    display: block;
    min-height: auto;
    padding: 0;
  }

  .workspace-panel {
    padding: 0;
  }

  .board-shell {
    width: 100vw;
    max-width: none;
    border: none;
    box-shadow: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }
}