:root {
  --bg-1: #171311;
  --bg-2: #2a1f1a;
  --panel: rgba(30, 22, 18, 0.9);
  --panel-alt: rgba(43, 30, 23, 0.9);
  --text: #f5dfc4;
  --muted: #c29f7a;
  --accent: #ff8a3d;
  --accent-soft: rgba(255, 138, 61, 0.22);
  --good: #82ff95;
  --warn: #ffd166;
  --bad: #ff6d6d;
  --grid-line: rgba(255, 166, 112, 0.25);
  --cell-bg: linear-gradient(145deg, #31231d, #1d1612);
  --cell-border: rgba(255, 157, 97, 0.5);
  --shadow: 0 16px 35px rgba(0, 0, 0, 0.38);
  --font-ui: "Trebuchet MS", "Segoe UI", "Verdana", sans-serif;
  --font-mono: "Consolas", "Monaco", monospace;
  --common: #d9d2c7;
  --rare: #59b0ff;
  --epic: #c27bff;
  --legendary: #ffbe55;
}

body[data-era="cyber"] {
  --bg-1: #09121a;
  --bg-2: #112634;
  --panel: rgba(8, 22, 31, 0.92);
  --panel-alt: rgba(11, 34, 47, 0.92);
  --text: #d7f6ff;
  --muted: #7eb9cf;
  --accent: #18d6ff;
  --accent-soft: rgba(24, 214, 255, 0.2);
  --grid-line: rgba(104, 222, 255, 0.3);
  --cell-bg: linear-gradient(145deg, #123041, #0a1f2b);
  --cell-border: rgba(106, 220, 255, 0.5);
}

body[data-era="quantum"] {
  --bg-1: #0a0f1d;
  --bg-2: #16254f;
  --panel: rgba(9, 18, 43, 0.9);
  --panel-alt: rgba(19, 35, 76, 0.9);
  --text: #e4ecff;
  --muted: #a9bdf4;
  --accent: #68ffb2;
  --accent-soft: rgba(104, 255, 178, 0.2);
  --grid-line: rgba(129, 252, 195, 0.3);
  --cell-bg: linear-gradient(145deg, #1c2f68, #101d3f);
  --cell-border: rgba(117, 255, 194, 0.54);
}

* {
  box-sizing: border-box;
}

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

body {
  font-family: var(--font-ui);
  color: var(--text);
  background:
    radial-gradient(circle at 20% 20%, rgba(255, 255, 255, 0.05), transparent 45%),
    radial-gradient(circle at 78% 0%, rgba(255, 255, 255, 0.04), transparent 35%),
    linear-gradient(160deg, var(--bg-1), var(--bg-2));
  transition: background 0.6s ease, color 0.4s ease;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 32px 32px;
  opacity: 0.32;
  z-index: -1;
}

.skip-link {
  position: absolute;
  left: 8px;
  top: -46px;
  background: #111;
  color: #fff;
  padding: 8px 12px;
  border-radius: 8px;
  z-index: 20;
}

.skip-link:focus {
  top: 8px;
}

.app-shell {
  max-width: 1280px;
  margin: 0 auto;
  padding: 20px;
  display: grid;
  gap: 16px;
}

.topbar {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  background: var(--panel-alt);
  border: 1px solid var(--cell-border);
  border-radius: 18px;
  padding: 16px;
  box-shadow: var(--shadow);
}

.engine-brand h1 {
  margin: 0;
  font-size: clamp(1.4rem, 3vw, 2rem);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.engine-brand p {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.save-tools {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.save-status {
  flex-basis: 100%;
  min-height: 1.2em;
  margin: 0;
  color: var(--muted);
  font-size: 0.78rem;
}

.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 8px;
}

.stat {
  background: var(--panel);
  border: 1px solid var(--cell-border);
  border-radius: 10px;
  padding: 8px;
  min-height: 60px;
}

.stat .label {
  color: var(--muted);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.stat .value {
  font-family: var(--font-mono);
  font-size: 1rem;
  margin-top: 5px;
  font-weight: 700;
  word-break: break-word;
}

.app-shell main {
  display: grid;
  gap: 14px;
}

.workspace-tabs {
  display: flex;
  gap: 6px;
  padding: 6px;
  overflow-x: auto;
  border: 1px solid var(--cell-border);
  border-radius: 14px;
  background: var(--panel-alt);
  box-shadow: var(--shadow);
  scrollbar-width: thin;
}

.workspace-tabs .workspace-tab {
  flex: 0 0 auto;
  min-width: 92px;
  color: var(--muted);
  background: rgba(0, 0, 0, 0.16);
  box-shadow: none;
}

.workspace-tabs .workspace-tab[aria-selected="true"] {
  color: var(--text);
  border-color: var(--accent);
  background: linear-gradient(180deg, var(--accent-soft), rgba(0, 0, 0, 0.24));
  box-shadow: inset 0 -2px 0 var(--accent);
}

.workspace-panel {
  display: grid;
  gap: 14px;
}

.workspace-panel[hidden] {
  display: none;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--cell-border);
  border-radius: 16px;
  padding: 14px;
  box-shadow: var(--shadow);
}

.panel h2,
.panel h3 {
  margin: 0 0 10px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-size: 0.97rem;
}

.small {
  margin: 0;
  color: var(--muted);
  font-size: 0.86rem;
}

.machine-stage {
  position: relative;
  overflow: hidden;
}

.stage-head {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
  align-items: center;
}

.stage-head h2 {
  font-size: 1rem;
  margin-bottom: 3px;
}

.controls {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: flex-end;
}

.app-shell button,
#offline-modal button {
  border: 1px solid var(--cell-border);
  background: linear-gradient(180deg, var(--accent-soft), rgba(0, 0, 0, 0.18));
  color: var(--text);
  padding: 7px 10px;
  border-radius: 10px;
  cursor: pointer;
  font-family: var(--font-ui);
  font-size: 0.84rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  transition: transform 0.12s ease, box-shadow 0.2s ease;
}

.app-shell button:hover:not(:disabled),
#offline-modal button:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.16), 0 0 14px rgba(255, 255, 255, 0.08);
}

.app-shell button:disabled,
#offline-modal button:disabled {
  opacity: 0.45;
  cursor: default;
}

.app-shell button:focus-visible,
#offline-modal button:focus-visible {
  outline: 3px solid var(--warn);
  outline-offset: 2px;
}

.app-shell .danger-button {
  border-color: rgba(255, 109, 109, 0.55);
  background: linear-gradient(180deg, rgba(255, 109, 109, 0.18), rgba(0, 0, 0, 0.2));
}

#grid-wrapper {
  position: relative;
  margin-top: 12px;
  border: 1px solid var(--cell-border);
  border-radius: 14px;
  background: rgba(0, 0, 0, 0.22);
  padding: 10px;
  overflow: hidden;
}

#slot-grid {
  display: grid;
  gap: 8px;
  position: relative;
  z-index: 1;
  min-height: 200px;
}

.symbol-cell {
  background: var(--cell-bg);
  border: 1px solid var(--cell-border);
  border-radius: 12px;
  min-height: 74px;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 7px;
  position: relative;
  overflow: hidden;
  animation: cellIn 220ms ease;
  will-change: opacity, transform;
}

.symbol-cell.spinning {
  animation: spinFlash 210ms linear infinite;
}

.symbol-cell .glyph {
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: 0.03em;
  margin-bottom: 3px;
}

.symbol-cell .name {
  font-size: 0.72rem;
  color: var(--muted);
  line-height: 1.1;
}

.symbol-cell .value {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  margin-top: 3px;
  color: var(--text);
}

.rarity-common {
  box-shadow: inset 0 0 0 1px rgba(217, 210, 199, 0.22);
}

.rarity-rare {
  box-shadow: inset 0 0 0 1px rgba(89, 176, 255, 0.36), 0 0 16px rgba(89, 176, 255, 0.13);
}

.rarity-epic {
  box-shadow: inset 0 0 0 1px rgba(194, 123, 255, 0.36), 0 0 18px rgba(194, 123, 255, 0.14);
}

.rarity-legendary {
  box-shadow: inset 0 0 0 1px rgba(255, 190, 85, 0.48), 0 0 20px rgba(255, 190, 85, 0.18);
}

.lock-row {
  margin-top: 10px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.lock-row button.active {
  background: linear-gradient(180deg, rgba(130, 255, 149, 0.3), rgba(0, 0, 0, 0.2));
  border-color: rgba(130, 255, 149, 0.45);
  color: #dfffe4;
}

#particles {
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  overflow: hidden;
}

.particle {
  position: absolute;
  width: 8px;
  height: 8px;
  border-radius: 2px;
  opacity: 0;
  animation: burst 600ms ease forwards;
}

.floater {
  position: absolute;
  top: 50%;
  left: 50%;
  font-size: 0.8rem;
  padding: 3px 6px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.4);
  background: rgba(0, 0, 0, 0.36);
  color: #fff;
  transform: translate(-50%, -50%);
  animation: floatText 900ms ease forwards;
  white-space: nowrap;
  z-index: 4;
}

#grid-wrapper.shake {
  animation: shake 260ms linear;
}

.spin-outcome {
  margin-top: 10px;
  display: grid;
  gap: 4px;
  padding: 10px 12px;
  border-left: 3px solid var(--accent);
  border-radius: 8px;
  background: rgba(0, 0, 0, 0.22);
}

.spin-outcome strong {
  font-size: 0.88rem;
  letter-spacing: 0.02em;
}

.spin-outcome span {
  color: var(--muted);
  font-size: 0.8rem;
  line-height: 1.4;
}

.machine-meta {
  margin-top: 10px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(145px, 1fr));
  gap: 8px;
}

.meta-item {
  background: rgba(0, 0, 0, 0.22);
  border: 1px solid var(--cell-border);
  border-radius: 8px;
  padding: 7px;
  font-size: 0.78rem;
}

.meta-item strong {
  display: block;
  font-family: var(--font-mono);
  margin-top: 3px;
  font-size: 0.84rem;
}

.machine-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 9px;
}

.machine-card {
  border: 1px solid var(--cell-border);
  border-radius: 11px;
  padding: 10px;
  background: rgba(0, 0, 0, 0.18);
  display: grid;
  gap: 8px;
}

.machine-card.selected {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

.machine-card .line {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  font-size: 0.78rem;
}

.machine-card .line span:last-child {
  font-family: var(--font-mono);
  color: var(--text);
}

.two-col {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.list-block {
  display: grid;
  gap: 7px;
  max-height: 280px;
  overflow: auto;
  padding-right: 2px;
}

.list-row {
  display: grid;
  grid-template-columns: 38px 1fr auto;
  gap: 8px;
  align-items: center;
  border: 1px solid var(--cell-border);
  border-radius: 9px;
  padding: 6px;
  background: rgba(0, 0, 0, 0.2);
}

.list-row .glyph {
  width: 30px;
  height: 30px;
  border-radius: 8px;
  display: grid;
  place-items: center;
  font-size: 0.77rem;
  font-weight: 800;
  border: 1px solid var(--cell-border);
  background: rgba(0, 0, 0, 0.28);
}

.list-row .meta {
  min-width: 0;
}

.list-row .meta strong {
  display: block;
  font-size: 0.84rem;
  line-height: 1.1;
}

.list-row .meta small {
  display: block;
  color: var(--muted);
  font-size: 0.72rem;
  line-height: 1.1;
  margin-top: 2px;
}

.ev-hint {
  font-weight: 700;
  letter-spacing: 0.01em;
}

.ev-good {
  color: #d3ffe1;
}

.ev-bad {
  color: #ffd3d3;
}

.ev-neutral {
  color: var(--muted);
}

.list-row .actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 4px;
  font-size: 0.73rem;
}

.list-row .actions button {
  padding: 5px 8px;
  font-size: 0.71rem;
}

.inline-grid {
  display: grid;
  gap: 8px;
}

.shop-row,
.upgrade-row,
.ing-row,
.buff-row,
.prestige-row,
.recipe-row {
  border: 1px solid var(--cell-border);
  border-radius: 10px;
  padding: 8px;
  background: rgba(0, 0, 0, 0.18);
  display: grid;
  gap: 6px;
}

.shop-row .line,
.upgrade-row .line,
.ing-row .line,
.buff-row .line,
.prestige-row .line,
.recipe-row .line {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  align-items: center;
  font-size: 0.8rem;
}

.cost {
  font-family: var(--font-mono);
  color: var(--warn);
  font-size: 0.76rem;
}

.pill {
  display: inline-block;
  border: 1px solid var(--cell-border);
  border-radius: 999px;
  padding: 2px 7px;
  font-size: 0.69rem;
  color: var(--muted);
  background: rgba(0, 0, 0, 0.2);
}

.skill-grid {
  display: grid;
  gap: 8px;
}

.skill-node {
  border: 1px solid var(--cell-border);
  border-radius: 10px;
  padding: 8px;
  background: rgba(0, 0, 0, 0.2);
  display: grid;
  gap: 4px;
}

.skill-node.locked {
  opacity: 0.5;
}

.skill-node.active {
  border-color: rgba(130, 255, 149, 0.5);
  box-shadow: 0 0 12px rgba(130, 255, 149, 0.16);
}

#event-log {
  max-height: 170px;
  overflow: auto;
  display: grid;
  gap: 4px;
  font-size: 0.79rem;
}

.log-line {
  border-left: 2px solid var(--cell-border);
  padding-left: 7px;
  color: var(--muted);
}

.log-line.good {
  border-color: var(--good);
  color: #d8ffe0;
}

.log-line.warn {
  border-color: var(--warn);
  color: #fff0c2;
}

.log-line.bad {
  border-color: var(--bad);
  color: #ffd8d8;
}

#offline-modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  display: grid;
  place-items: center;
  padding: 18px;
  opacity: 1;
  pointer-events: auto;
  z-index: 3200;
}

#offline-modal.hidden {
  display: none;
}

#offline-modal .modal-card {
  width: min(480px, 100%);
  border: 1px solid var(--cell-border);
  border-radius: 14px;
  padding: 15px;
  background: var(--panel-alt);
  box-shadow: var(--shadow);
  display: grid;
  gap: 10px;
}

#offline-modal .modal-card h2 {
  margin: 0;
  font-size: 1.04rem;
  text-transform: uppercase;
}

#offline-modal .modal-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.4;
}

@keyframes cellIn {
  from {
    transform: scale(0.92);
    opacity: 0;
  }
  to {
    transform: scale(1);
    opacity: 1;
  }
}

@keyframes spinFlash {
  0% {
    opacity: 0.78;
    transform: scale(0.985);
  }
  50% {
    opacity: 1;
    transform: scale(1);
  }
  100% {
    opacity: 0.8;
    transform: scale(0.988);
  }
}

@keyframes shake {
  0% { transform: translateX(0); }
  20% { transform: translateX(-4px); }
  40% { transform: translateX(5px); }
  60% { transform: translateX(-4px); }
  80% { transform: translateX(3px); }
  100% { transform: translateX(0); }
}

@keyframes burst {
  0% {
    opacity: 0;
    transform: translate(0, 0) scale(0.3);
  }
  20% {
    opacity: 1;
  }
  100% {
    opacity: 0;
    transform: translate(var(--dx), var(--dy)) scale(1.15);
  }
}

@keyframes floatText {
  0% {
    opacity: 0;
    transform: translate(-50%, -50%) scale(0.8);
  }
  20% {
    opacity: 1;
  }
  100% {
    opacity: 0;
    transform: translate(-50%, -125%) scale(1.06);
  }
}

@media (max-width: 900px) {
  .two-col {
    grid-template-columns: 1fr;
  }

  .stage-head {
    grid-template-columns: 1fr;
  }

  .controls {
    justify-content: flex-start;
  }

  .stats {
    grid-template-columns: repeat(auto-fit, minmax(115px, 1fr));
  }
}

@media (max-width: 560px) {
  .app-shell {
    padding: 12px;
  }

  .topbar,
  .panel {
    border-radius: 12px;
    padding: 12px;
  }

  .save-tools > button {
    flex: 1 1 120px;
  }

  .workspace-tabs .workspace-tab {
    min-width: 82px;
    min-height: 44px;
  }

  .controls > button {
    flex: 1 1 130px;
    min-height: 44px;
  }

  .symbol-cell {
    min-height: 68px;
  }
}

@media (prefers-reduced-motion: reduce) {
  body {
    transition: none;
  }

  .app-shell button,
  #offline-modal button,
  .symbol-cell,
  .symbol-cell.spinning,
  .particle,
  .floater,
  #grid-wrapper.shake {
    animation: none !important;
    transition: none !important;
  }

  #particles {
    display: none;
  }
}