/*
 * Sigmar's Garden — replica styling.
 *
 * The palette follows Opus Magnum's own UI: walnut and brass around the
 * board, aged paper for panels, and the warm cream of the carved tiles.
 */

:root {
  --walnut-deep: #14100c;
  --walnut: #1e1913;
  --walnut-light: #2b241b;
  --brass: #b08d4f;
  --brass-bright: #e0bb72;
  --paper: #cfc4a6;
  --paper-dim: #a99e83;
  --ink: #2a2318;
  --cream: #e8dfc4;
  --accent: #7ed6ff;
  --danger: #d97b5a;
  --ok: #8fbf6a;
  --radius: 6px;
  --serif: 'Palatino Linotype', 'Book Antiqua', Palatino, Georgia, 'Times New Roman', serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
  margin: 0;
}

body {
  background:
    radial-gradient(ellipse at 50% 0%, #241d15 0%, #14100c 60%, #0b0906 100%);
  color: var(--paper);
  font-family: var(--serif);
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
}

.sg-app {
  display: flex;
  flex-direction: column;
  height: 100vh;
  height: 100dvh;
  padding: 14px clamp(12px, 2vw, 28px) 10px;
  gap: 10px;
}

/* ------------------------------- header ------------------------------- */

.sg-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  flex: 0 0 auto;
  border-bottom: 1px solid #45392a;
  padding-bottom: 8px;
}

.sg-title {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.sg-title-main {
  font-size: clamp(20px, 2.4vw, 30px);
  letter-spacing: 0.04em;
  color: var(--brass-bright);
  text-shadow: 0 1px 0 #000, 0 0 18px rgba(224, 187, 114, 0.18);
}

.sg-title-sub {
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: #8a7a5e;
}

.sg-stats {
  display: flex;
  gap: clamp(14px, 2.4vw, 34px);
}

.sg-stat {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 2px;
}

.sg-stat-label {
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: #8a7a5e;
}

.sg-stat-value {
  font-size: clamp(15px, 1.6vw, 20px);
  color: var(--cream);
  font-variant-numeric: tabular-nums;
}

/* -------------------------------- main -------------------------------- */

.sg-main {
  display: flex;
  gap: clamp(10px, 1.6vw, 22px);
  flex: 1 1 auto;
  min-height: 0;
}

.sg-board-wrap {
  position: relative;
  flex: 1 1 auto;
  min-width: 0;
  border-radius: var(--radius);
  background:
    radial-gradient(ellipse at 50% 40%, rgba(70, 58, 42, 0.55), rgba(0, 0, 0, 0) 70%),
    #17130e;
  box-shadow:
    inset 0 0 60px rgba(0, 0, 0, 0.75),
    0 2px 0 #000;
  border: 1px solid #3a3024;
  overflow: hidden;
}

.sg-canvas {
  display: block;
  width: 100%;
  height: 100%;
  touch-action: manipulation;
}

.sg-canvas.sg-shake {
  animation: sg-shake 0.22s ease-in-out;
}

@keyframes sg-shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-4px); }
  75% { transform: translateX(4px); }
}

.sg-message {
  position: absolute;
  left: 50%;
  top: 14px;
  transform: translateX(-50%) translateY(-8px);
  background: rgba(20, 16, 12, 0.92);
  border: 1px solid var(--brass);
  color: var(--cream);
  padding: 7px 16px;
  border-radius: 999px;
  font-size: 13px;
  letter-spacing: 0.04em;
  opacity: 0;
  transition: opacity 0.2s ease, transform 0.2s ease;
  pointer-events: none;
}

.sg-message.is-visible {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* -------------------------------- side ------------------------------- */

.sg-side {
  flex: 0 0 clamp(190px, 17vw, 240px);
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-height: 0;
  /* Keep the state panel clear of the toolbar below. */
  padding-bottom: 4px;
}

.sg-panel-title {
  margin: 0;
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: #8a7a5e;
  font-weight: 400;
}

.sg-legend {
  display: flex;
  flex-direction: column;
  /* Distribute the rows down the column instead of clustering them at the top
     and leaving a dead gap above the state panel. When the window is short the
     rows compress and the list scrolls. */
  justify-content: space-between;
  gap: 1px;
  padding: 0 4px 0 0;
  overflow-y: auto;
  padding-right: 4px;
  flex: 1 1 auto;
  min-height: 0;
  scrollbar-width: thin;
  scrollbar-color: #4a3d2c transparent;
}

.sg-legend-row {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 2px 7px;
  background: transparent;
  border: 1px solid transparent;
  border-radius: 4px;
  color: var(--paper-dim);
  font-family: inherit;
  font-size: 13px;
  text-align: left;
  cursor: pointer;
  transition: background 0.14s ease, border-color 0.14s ease, color 0.14s ease;
}

.sg-legend-row:hover {
  background: rgba(176, 141, 79, 0.12);
  border-color: rgba(176, 141, 79, 0.35);
  color: var(--cream);
}

.sg-legend-row.is-playable {
  color: var(--cream);
}

.sg-legend-row.is-empty {
  opacity: 0.26;
  filter: grayscale(0.7);
}

.sg-legend-chip {
  flex: 0 0 26px;
  width: 26px;
  height: 26px;
  display: grid;
  place-items: center;
}

.sg-legend-chip img {
  width: 100%;
  height: 100%;
  display: block;
  image-rendering: auto;
}

.sg-legend-label {
  flex: 1 1 auto;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sg-legend-count {
  flex: 0 0 auto;
  font-variant-numeric: tabular-nums;
  color: var(--brass);
  font-size: 12px;
}

.sg-hint-note {
  margin: 2px 0 0;
  font-size: 10.5px;
  line-height: 1.45;
  color: #7d6f57;
}

/* --------------------------- sidebar state ---------------------------- */

.sg-state {
  /* Never let the state panel shrink or clip; the legend above absorbs the
     squeeze and scrolls instead. */
  flex: 0 0 auto;
  min-height: 0;
  display: flex;
  flex-direction: column;
  gap: 7px;
  padding: 10px 11px 12px;
  border: 1px solid #3a3024;
  border-radius: 5px;
  background:
    linear-gradient(rgba(255, 255, 255, 0.014), rgba(0, 0, 0, 0.05)),
    #1c170f;
}

.sg-state .sg-panel-title {
  margin: 0;
}

.sg-state-next {
  font-size: 12px;
  line-height: 1.5;
  color: #cbbf9f;
}

.sg-state-next strong {
  color: var(--brass-bright);
  font-weight: 600;
}

.sg-state-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 6px 10px;
  margin: 2px 0 0;
}

.sg-state-grid > div {
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.sg-state-grid dt {
  font-size: 9px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: #7d6f57;
}

.sg-state-grid dd {
  margin: 0;
  font-size: 15px;
  color: var(--cream);
  font-variant-numeric: tabular-nums;
}

.sg-state-progress {
  height: 3px;
  border-radius: 2px;
  background: #2c2417;
  overflow: hidden;
}

.sg-state-progress > span {
  display: block;
  height: 100%;
  width: 0;
  border-radius: 2px;
  background: linear-gradient(90deg, #6d5a34, var(--brass-bright));
  transition: width 220ms ease;
}

/* ------------------------------ toolbar ------------------------------ */

.sg-toolbar {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  flex: 0 0 auto;
}

.sg-spacer {
  flex: 1 1 auto;
}

.sg-button {
  font-family: inherit;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--cream);
  background: linear-gradient(#332a1f, #241d15);
  border: 1px solid #4d3f2c;
  border-radius: 4px;
  padding: 7px 14px;
  cursor: pointer;
  transition: background 0.14s ease, border-color 0.14s ease, color 0.14s ease;
}

.sg-button:hover:not(:disabled) {
  background: linear-gradient(#443726, #2c2419);
  border-color: var(--brass);
  color: #fff3dc;
}

.sg-button:active:not(:disabled) {
  transform: translateY(1px);
}

.sg-button:disabled {
  opacity: 0.4;
  cursor: default;
}

.sg-button--primary {
  background: linear-gradient(#6a5427, #493716);
  border-color: var(--brass);
  color: #fff1cf;
}

.sg-button--primary:hover:not(:disabled) {
  background: linear-gradient(#836830, #5a441c);
}

.sg-button.is-off {
  color: #8a7a5e;
}

.sg-field {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #8a7a5e;
}

.sg-select {
  font-family: inherit;
  font-size: 12px;
  letter-spacing: normal;
  text-transform: none;
  color: var(--cream);
  background: #241d15;
  border: 1px solid #4d3f2c;
  border-radius: 4px;
  padding: 6px 9px;
  cursor: pointer;
}

/* ------------------------------- status ------------------------------ */

.sg-status {
  flex: 0 0 auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 7px;
  font-size: 12px;
  color: #8a7a5e;
  padding-top: 2px;
}

.sg-status strong {
  color: var(--brass-bright);
  font-weight: 500;
}

.sg-dot {
  opacity: 0.5;
}

/* ------------------------------ overlay ------------------------------ */

.sg-overlay {
  position: fixed;
  inset: 0;
  background: rgba(8, 6, 4, 0.74);
  backdrop-filter: blur(3px);
  display: grid;
  place-items: center;
  padding: 24px;
  z-index: 40;
  opacity: 0;
  transition: opacity 0.18s ease;
}

/*
 * The `hidden` attribute must win over `display: grid`, otherwise the
 * invisible overlay keeps covering the page and swallows every click.
 */
.sg-overlay[hidden] {
  display: none;
}

.sg-overlay.is-visible {
  opacity: 1;
}

.sg-overlay-body {
  width: min(880px, 100%);
  max-height: 86vh;
  overflow-y: auto;
  background:
    linear-gradient(rgba(255, 255, 255, 0.02), rgba(0, 0, 0, 0.03)),
    #2a2419;
  border: 1px solid var(--brass);
  border-radius: 8px;
  padding: clamp(18px, 3vw, 30px);
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.75);
  color: var(--paper);
  line-height: 1.62;
  font-size: 14px;
}

.sg-overlay-body h2 {
  margin: 0 0 14px;
  font-size: clamp(18px, 2vw, 24px);
  color: var(--brass-bright);
  font-weight: 400;
  letter-spacing: 0.03em;
}

.sg-overlay-body p {
  margin: 0 0 12px;
}

.sg-overlay-body strong {
  color: var(--cream);
  font-weight: 600;
}

.sg-overlay-body em {
  color: var(--brass-bright);
  font-style: italic;
}

.sg-overlay-body .muted {
  color: #8f8266;
  font-size: 13px;
}

.sg-help-pair {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin: 16px 0;
  align-items: start;
}

/* A lone figure in the grid would otherwise stretch across both columns and
   blow its diagram up to twice the size of the paired ones. */
.sg-help-pair > figure:only-child {
  grid-column: 1;
}

.sg-help-pair > figure:only-child img {
  max-width: 300px;
  margin: 0 auto;
}

@media (max-width: 640px) {
  .sg-help-pair {
    grid-template-columns: minmax(0, 1fr);
  }
}

.sg-overlay-body figure {
  margin: 0;
  background: #cfc4a6;
  border-radius: 5px;
  padding: 10px;
  border: 1px solid #6d5c3e;
}

.sg-overlay-body figure img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 190px;
  object-fit: contain;
  image-rendering: auto;
}

/* A lone figure in the grid would otherwise stretch across both columns and
   blow its diagram up to twice the size of the paired ones. */
.sg-help-pair > figure:only-child {
  grid-column: 1;
}

.sg-help-pair > figure:only-child img {
  max-width: 300px;
  margin: 0 auto;
}

@media (max-width: 640px) {
  .sg-help-pair {
    grid-template-columns: minmax(0, 1fr);
  }
}

.sg-overlay-body figure {
  margin: 0;
  background: #cfc4a6;
  border-radius: 5px;
  padding: 10px;
  border: 1px solid #6d5c3e;
}

.sg-overlay-body figure img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 190px;
  object-fit: contain;
  image-rendering: auto;
}

.sg-overlay-body figcaption {
  margin-top: 8px;
  font-size: 12px;
  line-height: 1.45;
  color: #4a3f2b;
}

.sg-overlay-actions {
  display: flex;
  gap: 9px;
  justify-content: flex-end;
  margin-top: 20px;
  flex-wrap: wrap;
}

.sg-details {
  margin-top: 18px;
  border-top: 1px solid #45392a;
  padding-top: 12px;
  font-size: 13px;
  color: #8f8266;
}

.sg-details summary {
  cursor: pointer;
  color: var(--brass);
  letter-spacing: 0.04em;
  margin-bottom: 8px;
}

.sg-details summary:hover {
  color: var(--brass-bright);
}

.sg-details p {
  margin: 0 0 10px;
  line-height: 1.55;
}

/* --------------------------- calibration ---------------------------- */

/*
 * Developer tooling for seating the marbles on the carved tiles. Reached
 * with `?calibrate` or `sgCalibrate()`, never shown by default.
 */
.sg-calib {
  position: fixed;
  left: 50%;
  bottom: 14px;
  transform: translateX(-50%);
  z-index: 60;
  width: min(620px, calc(100vw - 24px));
  background: rgba(20, 17, 13, 0.96);
  border: 1px solid var(--brass);
  border-radius: 8px;
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.7);
  padding: 12px 14px 10px;
  font-size: 12px;
  color: var(--paper);
  backdrop-filter: blur(4px);
}

.sg-calib[hidden] {
  display: none;
}

.sg-calib-head {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}

.sg-calib-head strong {
  color: var(--brass-bright);
  font-weight: 600;
  letter-spacing: 0.04em;
}

.sg-calib-hint {
  flex: 1 1 auto;
  color: #8a7a5e;
  font-size: 11px;
}

.sg-calib-hint kbd {
  background: #2b241b;
  border: 1px solid #4d3f2c;
  border-radius: 3px;
  padding: 0 3px;
  font-family: inherit;
  font-size: 10px;
}

.sg-calib-close {
  background: none;
  border: 0;
  color: #8a7a5e;
  cursor: pointer;
  font-size: 13px;
  line-height: 1;
  padding: 2px 4px;
}

.sg-calib-close:hover {
  color: var(--cream);
}

.sg-calib-row {
  display: grid;
  grid-template-columns: 84px repeat(2, 34px) 1fr repeat(2, 34px) 66px;
  align-items: center;
  gap: 6px;
  margin-bottom: 7px;
}

.sg-calib-row label {
  color: var(--paper-dim);
  font-variant-numeric: tabular-nums;
}

.sg-calib-row button {
  font-family: inherit;
  font-size: 12px;
  color: var(--cream);
  background: #2b241b;
  border: 1px solid #4d3f2c;
  border-radius: 4px;
  padding: 4px 0;
  cursor: pointer;
}

.sg-calib-row button:hover {
  border-color: var(--brass);
}

.sg-calib-row input[type='range'] {
  width: 100%;
  accent-color: var(--brass);
}

.sg-calib-row input[type='number'] {
  font-family: inherit;
  font-size: 12px;
  width: 100%;
  color: var(--cream);
  background: #241d15;
  border: 1px solid #4d3f2c;
  border-radius: 4px;
  padding: 4px 5px;
  font-variant-numeric: tabular-nums;
}

.sg-calib-foot {
  display: flex;
  align-items: center;
  gap: 8px;
  border-top: 1px solid #3a3024;
  padding-top: 9px;
  margin-top: 3px;
}

.sg-calib-foot button {
  font-family: inherit;
  font-size: 12px;
  color: var(--cream);
  background: #2b241b;
  border: 1px solid #4d3f2c;
  border-radius: 4px;
  padding: 5px 10px;
  cursor: pointer;
}

.sg-calib-foot button:hover {
  border-color: var(--brass);
}

.sg-calib-primary {
  background: linear-gradient(#6a5427, #493716) !important;
  border-color: var(--brass) !important;
}

.sg-calib-out {
  margin-left: auto;
  color: var(--brass-bright);
  font-variant-numeric: tabular-nums;
}

@media (max-width: 620px) {
  .sg-calib-row {
    grid-template-columns: 70px repeat(2, 30px) 1fr repeat(2, 30px) 58px;
  }
}

/* -------------------------------- boot ------------------------------- */

.sg-boot {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  background: #0b0906;
  z-index: 90;
  transition: opacity 0.5s ease;
}

.sg-boot.is-gone {
  opacity: 0;
  pointer-events: none;
}

.sg-boot-inner {
  text-align: center;
  color: var(--paper-dim);
}

.sg-boot-title {
  margin: 0;
  font-size: 24px;
  letter-spacing: 0.06em;
  color: var(--brass-bright);
}

.sg-boot-sub {
  margin: 8px 0 0;
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #6f6249;
}

.sg-boot-rule {
  width: 120px;
  height: 1px;
  margin: 0 auto 16px;
  background: linear-gradient(90deg, transparent, var(--brass), transparent);
}

/* ----------------------------- responsive ---------------------------- */

@media (max-width: 860px) {
  .sg-main {
    flex-direction: column;
  }

  .sg-side {
    flex: 0 0 auto;
    max-height: 34vh;
  }

  .sg-legend {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 4px;
  }

  .sg-legend-row {
    flex: 0 0 auto;
    font-size: 12px;
  }

  .sg-legend-label {
    display: none;
  }

  .sg-legend-chip {
    flex-basis: 22px;
    width: 22px;
    height: 22px;
  }

  .sg-hint-note {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .sg-canvas,
  .sg-overlay,
  .sg-boot,
  .sg-message {
    animation: none !important;
    transition: none !important;
  }
}