:root {
  --archon-bg: #071017;
  --archon-panel: rgba(9, 20, 27, 0.9);
  --archon-panel-strong: rgba(7, 15, 21, 0.98);
  --archon-line: rgba(162, 201, 204, 0.2);
  --archon-line-strong: rgba(245, 178, 91, 0.42);
  --archon-text: #fbf3df;
  --archon-muted: #a8bcc0;
  --archon-blue: #7dd3fc;
  --archon-green: #80ed99;
  --archon-gold: #f5b25b;
  --archon-red: #f87171;
  --archon-cell-a: #0a151b;
  --archon-cell-b: #101d22;
  --archon-shadow: 0 26px 70px rgba(0, 0, 0, 0.36);
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  background: var(--archon-bg);
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--archon-text);
  font-family: "Outfit", "Avenir Next", "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at 16% 10%, rgba(125, 211, 252, 0.13), transparent 28%),
    radial-gradient(circle at 86% 18%, rgba(245, 178, 91, 0.12), transparent 27%),
    linear-gradient(180deg, #071017 0%, #081720 50%, #04090d 100%);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.2;
  background:
    linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(circle at center, black 48%, transparent 100%);
}

a,
button,
textarea {
  font: inherit;
}

button {
  cursor: pointer;
}

.archon-shell {
  position: relative;
  width: min(1320px, calc(100% - 36px));
  margin: 0 auto;
  padding: 18px 0 42px;
}

.archon-topbar,
.board-header,
.clash-card__header,
.comparison-topline,
.button-row {
  display: flex;
  align-items: center;
}

.archon-topbar {
  justify-content: space-between;
  gap: 20px;
  margin: 24px 0;
}

.eyebrow,
.panel-kicker {
  display: block;
  margin-bottom: 8px;
  color: var(--archon-blue);
  font-size: 0.74rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin: 0;
}

h1 {
  color: #fff8e7;
  font-size: clamp(2.3rem, 4vw, 4.2rem);
  line-height: 0.94;
  letter-spacing: 0;
}

h2 {
  color: #fff8e7;
  font-size: 1.28rem;
  line-height: 1.14;
}

.subtitle,
.status-card p,
.evidence-log p {
  color: var(--archon-muted);
  line-height: 1.55;
}

.subtitle {
  max-width: 740px;
  margin-top: 10px;
}

.topbar-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.primary-button,
.ghost-button {
  min-height: 42px;
  border-radius: 8px;
  border: 1px solid var(--archon-line);
  padding: 10px 14px;
  color: var(--archon-text);
  font-weight: 800;
}

.primary-button {
  border-color: rgba(125, 211, 252, 0.44);
  background: linear-gradient(135deg, rgba(14, 116, 144, 0.92), rgba(22, 101, 52, 0.86));
  box-shadow: 0 18px 38px rgba(7, 89, 133, 0.24);
}

.ghost-button {
  background: rgba(11, 23, 31, 0.72);
}

.primary-button:hover,
.ghost-button:hover {
  border-color: rgba(245, 178, 91, 0.62);
  transform: translateY(-1px);
}

.primary-button:disabled {
  cursor: not-allowed;
  opacity: 0.52;
  transform: none;
}

.archon-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.62fr) minmax(330px, 0.9fr);
  gap: 22px;
  align-items: start;
}

.board-panel,
.status-card,
.clash-card {
  border: 1px solid var(--archon-line);
  background: var(--archon-panel);
  box-shadow: var(--archon-shadow);
  backdrop-filter: blur(16px);
}

.board-panel {
  border-radius: 18px;
  padding: clamp(14px, 2vw, 22px);
}

.board-header {
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 16px;
}

.turn-pill,
.square-badge {
  display: inline-flex;
  min-height: 36px;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(245, 178, 91, 0.4);
  border-radius: 999px;
  padding: 8px 12px;
  background: rgba(245, 178, 91, 0.12);
  color: #ffe3aa;
  font-weight: 800;
}

.game-board {
  display: grid;
  grid-template-columns: repeat(8, minmax(0, 1fr));
  grid-template-rows: repeat(8, minmax(0, 1fr));
  width: min(100%, 780px);
  aspect-ratio: 1;
  margin: 0 auto;
  overflow: hidden;
  border: 1px solid rgba(245, 178, 91, 0.28);
  border-radius: 14px;
  background: #071017;
}

.board-cell {
  position: relative;
  display: grid;
  place-items: center;
  min-width: 0;
  min-height: 0;
  border: 1px solid rgba(255, 255, 255, 0.035);
  padding: 6px;
  background: var(--cell-bg);
}

.board-cell > * {
  position: relative;
  z-index: 2;
}

.board-cell:nth-child(odd) {
  --cell-bg: var(--archon-cell-a);
}

.board-cell:nth-child(even) {
  --cell-bg: var(--archon-cell-b);
}

.board-cell.is-selected {
  box-shadow: inset 0 0 0 3px rgba(245, 178, 91, 0.7);
}

.board-cell--claimed {
  --claim-line: rgba(255, 255, 255, 0.22);
  --claim-fill: rgba(255, 255, 255, 0.07);
  --claim-glow: rgba(255, 255, 255, 0.12);
  background:
    radial-gradient(circle at 50% 18%, var(--claim-fill), transparent 58%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.025), transparent),
    var(--cell-bg);
}

.board-cell--claimed::before {
  content: "";
  position: absolute;
  inset: 2px;
  z-index: 1;
  pointer-events: none;
  border: 1px solid var(--claim-line);
  border-radius: 8px;
  background:
    linear-gradient(180deg, rgba(3, 9, 13, 0.12), rgba(3, 9, 13, 0.42)),
    var(--square-art, none) center/cover no-repeat,
    linear-gradient(135deg, var(--claim-fill), transparent 62%),
    repeating-linear-gradient(135deg, rgba(255, 255, 255, 0.08) 0 1px, transparent 1px 13px);
  box-shadow:
    inset 0 0 22px var(--claim-glow),
    0 0 18px var(--claim-glow);
}

.board-cell--claimed-player {
  --claim-line: rgba(128, 237, 153, 0.8);
  --claim-fill: rgba(128, 237, 153, 0.18);
  --claim-glow: rgba(128, 237, 153, 0.26);
}

.board-cell--claimed-ai {
  --claim-line: rgba(125, 211, 252, 0.8);
  --claim-fill: rgba(125, 211, 252, 0.15);
  --claim-glow: rgba(125, 211, 252, 0.24);
}

.board-cell--effect-technological-megatrend {
  --claim-line: rgba(248, 113, 113, 0.86);
  --claim-fill: rgba(248, 113, 113, 0.17);
  --claim-glow: rgba(248, 113, 113, 0.28);
}

.board-cell--effect-adaptability {
  --claim-line: rgba(245, 178, 91, 0.86);
  --claim-fill: rgba(245, 178, 91, 0.2);
  --claim-glow: rgba(245, 178, 91, 0.28);
}

.board-cell--effect-career-network {
  --claim-line: rgba(128, 237, 153, 0.82);
  --claim-fill: rgba(128, 237, 153, 0.17);
  --claim-glow: rgba(128, 237, 153, 0.26);
}

.board-cell--blocked::before {
  background:
    linear-gradient(180deg, rgba(3, 9, 13, 0.1), rgba(3, 9, 13, 0.38)),
    var(--square-art, none) center/cover no-repeat,
    linear-gradient(135deg, var(--claim-fill), transparent 62%),
    repeating-linear-gradient(45deg, rgba(248, 113, 113, 0.24) 0 3px, transparent 3px 11px);
}

.board-cell.is-valid::after {
  content: "";
  position: absolute;
  z-index: 3;
  width: 22%;
  aspect-ratio: 1;
  border-radius: 50%;
  background: rgba(125, 211, 252, 0.24);
  border: 1px solid rgba(125, 211, 252, 0.72);
}

.board-cell.is-capture::after {
  width: 28%;
  border-radius: 8px;
  transform: rotate(45deg);
  background: rgba(248, 113, 113, 0.2);
  border-color: rgba(248, 113, 113, 0.82);
}

.coord-label {
  position: absolute;
  right: 5px;
  bottom: 4px;
  color: rgba(251, 243, 223, 0.26);
  font-size: 0.64rem;
  font-weight: 800;
}

.square-status {
  position: absolute;
  left: 5px;
  top: 5px;
  display: inline-flex;
  min-width: 24px;
  min-height: 20px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--claim-line, rgba(255, 255, 255, 0.18));
  border-radius: 999px;
  background: rgba(3, 9, 13, 0.72);
  color: #ffffff;
  font-size: 0.58rem;
  font-weight: 900;
  letter-spacing: 0;
}

.piece {
  position: relative;
  z-index: 2;
  display: grid;
  width: min(94%, 82px);
  min-height: 80px;
  place-items: center;
  gap: 3px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 10px;
  padding: 4px;
  overflow: hidden;
  text-align: center;
  transition: transform 150ms ease, border-color 150ms ease, box-shadow 150ms ease;
}

.board-cell:not(.is-locked):hover .piece {
  transform: translateY(-2px);
}

.piece--player {
  background:
    linear-gradient(150deg, rgba(128, 237, 153, 0.2), transparent 54%),
    rgba(9, 31, 25, 0.92);
  border-color: rgba(128, 237, 153, 0.32);
  box-shadow: 0 10px 24px rgba(22, 101, 52, 0.18);
}

.piece--ai {
  background:
    linear-gradient(150deg, rgba(125, 211, 252, 0.2), transparent 54%),
    rgba(7, 25, 35, 0.94);
  border-color: rgba(125, 211, 252, 0.3);
  box-shadow: 0 10px 24px rgba(14, 116, 144, 0.18);
}

.piece__portrait {
  position: relative;
  width: 100%;
  aspect-ratio: 1;
  overflow: hidden;
  border-radius: 8px;
  background: rgba(3, 9, 13, 0.76);
}

.piece__art {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.piece__icon {
  position: absolute;
  left: 4px;
  bottom: 4px;
  display: grid;
  width: 24px;
  height: 24px;
  place-items: center;
  border-radius: 50%;
  color: #081017;
  font-size: 0.68rem;
  font-weight: 900;
  box-shadow: 0 5px 14px rgba(0, 0, 0, 0.34);
}

.piece--player .piece__icon {
  background: var(--archon-green);
}

.piece--ai .piece__icon {
  background: var(--archon-blue);
}

.piece__name {
  color: #ffffff;
  font-size: clamp(0.52rem, 0.74vw, 0.68rem);
  font-weight: 800;
  line-height: 1.02;
  min-height: 1.04rem;
  max-width: 100%;
}

.command-panel {
  display: grid;
  gap: 16px;
}

.status-card {
  border-radius: 14px;
  padding: 16px;
}

.section-title {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}

.metric-stack {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.metric-stack div {
  min-height: 78px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 10px;
  padding: 11px;
  background: rgba(255, 255, 255, 0.04);
}

.metric-stack span {
  display: block;
  color: var(--archon-muted);
  font-size: 0.74rem;
  font-weight: 700;
}

.metric-stack strong {
  display: block;
  margin-top: 8px;
  color: #ffffff;
  font-size: 1.42rem;
}

.button-row {
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 14px;
}

.evidence-log,
.tile-rule-list {
  display: grid;
  gap: 10px;
}

.evidence-item,
.tile-rule {
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 10px;
  padding: 11px;
  background: rgba(255, 255, 255, 0.04);
}

.evidence-item strong,
.tile-rule strong {
  display: block;
  margin-bottom: 4px;
  color: #fff8e7;
}

.tile-rule {
  position: relative;
  display: grid;
  grid-template-columns: 58px minmax(0, 1fr);
  gap: 10px;
  align-items: start;
  overflow: hidden;
}

.tile-rule::before {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0.24;
  background:
    linear-gradient(90deg, rgba(3, 9, 13, 0.2), rgba(3, 9, 13, 0.88) 54%),
    var(--tile-art, none) left center/auto 100% no-repeat;
}

.tile-rule > * {
  position: relative;
  z-index: 1;
}

.tile-rule__icon {
  display: grid;
  min-height: 42px;
  place-items: center;
  border: 1px solid var(--tile-rule-line, rgba(255, 255, 255, 0.16));
  border-radius: 999px;
  background: var(--tile-rule-fill, rgba(255, 255, 255, 0.06));
  color: #ffffff;
  font-size: 0.72rem;
  font-weight: 900;
}

.tile-rule p {
  color: var(--archon-muted);
  line-height: 1.45;
}

.tile-rule--technological-megatrend {
  --tile-rule-line: rgba(248, 113, 113, 0.58);
  --tile-rule-fill: rgba(248, 113, 113, 0.12);
}

.tile-rule--adaptability {
  --tile-rule-line: rgba(245, 178, 91, 0.6);
  --tile-rule-fill: rgba(245, 178, 91, 0.12);
}

.tile-rule--career-network {
  --tile-rule-line: rgba(128, 237, 153, 0.58);
  --tile-rule-fill: rgba(128, 237, 153, 0.12);
}

.tile-rule-note {
  color: var(--archon-muted);
  font-size: 0.86rem;
  line-height: 1.45;
}

.clash-modal {
  position: fixed;
  inset: 0;
  z-index: 20;
  display: grid;
  place-items: center;
  padding: 22px;
  background: rgba(2, 6, 10, 0.78);
}

.clash-modal.is-hidden,
.clash-body.is-hidden,
.square-choice-panel.is-hidden,
.comparison-panel.is-hidden {
  display: none;
}

.clash-card {
  width: min(1040px, 100%);
  max-height: min(92vh, 900px);
  overflow: auto;
  border-radius: 18px;
  padding: clamp(18px, 3vw, 28px);
}

.clash-card__header {
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 18px;
}

.clash-prompt {
  color: #ffffff;
  font-size: clamp(1.22rem, 2vw, 1.6rem);
  font-weight: 800;
  line-height: 1.22;
}

.criteria-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 16px 0;
}

.criteria-list span {
  border: 1px solid rgba(125, 211, 252, 0.24);
  border-radius: 999px;
  padding: 7px 10px;
  background: rgba(14, 116, 144, 0.14);
  color: #dff7ff;
  font-size: 0.8rem;
  font-weight: 800;
}

.response-field {
  display: grid;
  gap: 8px;
}

.response-field span {
  color: #fff8e7;
  font-weight: 800;
}

.response-field textarea {
  width: 100%;
  min-height: 190px;
  resize: vertical;
  border: 1px solid rgba(162, 201, 204, 0.28);
  border-radius: 12px;
  padding: 14px;
  color: var(--archon-text);
  background: rgba(3, 9, 13, 0.82);
  line-height: 1.55;
}

.response-field textarea:focus {
  outline: 2px solid rgba(125, 211, 252, 0.55);
  outline-offset: 2px;
}

.clash-feedback {
  min-height: 28px;
  margin-top: 10px;
  color: #ffd9a2;
  font-weight: 800;
}

.comparison-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 14px;
}

.comparison-response {
  min-height: 220px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  padding: 14px;
  background: rgba(255, 255, 255, 0.04);
}

.comparison-response--student {
  border-color: rgba(128, 237, 153, 0.28);
}

.comparison-response--opponent {
  border-color: rgba(125, 211, 252, 0.28);
}

.comparison-topline {
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
  color: #ffffff;
  font-weight: 900;
}

.comparison-response p {
  color: var(--archon-muted);
  line-height: 1.58;
  white-space: pre-wrap;
}

.comparison-result {
  margin-top: 14px;
  border: 1px solid var(--archon-line-strong);
  border-radius: 12px;
  padding: 14px;
  background: rgba(245, 178, 91, 0.1);
  color: #fff4d7;
  font-weight: 800;
  line-height: 1.48;
}

.square-choice-panel {
  margin-top: 14px;
  border: 1px solid rgba(125, 211, 252, 0.22);
  border-radius: 12px;
  padding: 14px;
  background: rgba(125, 211, 252, 0.07);
}

.square-choice-panel h3 {
  color: #ffffff;
  font-size: 1.02rem;
}

.square-choice-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin-top: 12px;
}

.square-choice-option {
  --choice-accent: rgba(128, 237, 153, 0.68);
  --choice-fill: rgba(128, 237, 153, 0.11);
  position: relative;
  min-height: 128px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 10px;
  padding: 12px;
  color: var(--archon-text);
  text-align: left;
  overflow: hidden;
  background:
    linear-gradient(180deg, rgba(4, 11, 15, 0.28), rgba(4, 11, 15, 0.9)),
    var(--choice-art, none) center/cover no-repeat,
    rgba(255, 255, 255, 0.045);
}

.square-choice-option--technological-megatrend {
  --choice-accent: rgba(248, 113, 113, 0.72);
  --choice-fill: rgba(248, 113, 113, 0.12);
}

.square-choice-option--adaptability {
  --choice-accent: rgba(245, 178, 91, 0.72);
  --choice-fill: rgba(245, 178, 91, 0.12);
}

.square-choice-option--career-network {
  --choice-accent: rgba(128, 237, 153, 0.72);
  --choice-fill: rgba(128, 237, 153, 0.12);
}

.square-choice-option strong,
.square-choice-option span {
  position: relative;
  z-index: 1;
  display: block;
}

.square-choice-option strong {
  color: #ffffff;
  font-weight: 900;
}

.square-choice-option span {
  margin-top: 8px;
  color: var(--archon-muted);
  line-height: 1.45;
}

.square-choice-option:hover,
.square-choice-option.is-selected {
  border-color: var(--choice-accent);
  background:
    linear-gradient(180deg, rgba(4, 11, 15, 0.16), rgba(4, 11, 15, 0.82)),
    var(--choice-art, none) center/cover no-repeat,
    var(--choice-fill);
  box-shadow: inset 0 0 0 1px var(--choice-accent);
}

@media (max-width: 980px) {
  .archon-layout,
  .comparison-grid,
  .square-choice-grid {
    grid-template-columns: 1fr;
  }

  .archon-topbar,
  .board-header,
  .clash-card__header {
    align-items: flex-start;
    flex-direction: column;
  }

  .game-board {
    width: 100%;
  }

  .piece {
    min-height: 56px;
    padding: 5px 3px;
  }

  .piece__icon {
    width: 24px;
    height: 24px;
    font-size: 0.78rem;
  }
}

@media (max-width: 640px) {
  .archon-shell {
    width: min(100% - 18px, 1320px);
    padding-top: 10px;
  }

  .metric-stack {
    grid-template-columns: 1fr;
  }

  .coord-label,
  .piece__name,
  .square-status {
    display: none;
  }

  .piece {
    width: 80%;
    min-height: auto;
    aspect-ratio: 1;
    border-radius: 50%;
    padding: 3px;
  }

  .piece__portrait {
    border-radius: 50%;
  }

  .piece__icon {
    width: 22px;
    height: 22px;
    font-size: 0.62rem;
  }
}