:root {
  color-scheme: light;
  --ink: #1f2937;
  --muted: #667085;
  --line: #d7dee8;
  --paper: #fffaf2;
  --panel: #fffefd;
  --stone: #e7ded0;
  --floor: #e8f1e9;
  --moss: #1f7a5b;
  --moss-dark: #135c45;
  --amber: #f2b84b;
  --red: #d94841;
  --blue: #2563eb;
  --shadow: 0 18px 45px rgba(31, 41, 55, 0.14);
}

* {
  box-sizing: border-box;
}

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

body {
  color: var(--ink);
  background:
    linear-gradient(rgba(255, 250, 242, 0.84), rgba(255, 250, 242, 0.9)),
    repeating-linear-gradient(45deg, #d8cab4 0 12px, #e9ddca 12px 24px);
  font-family: "Microsoft YaHei UI", "PingFang SC", "Noto Sans SC", Arial, sans-serif;
}

button,
input,
textarea {
  font: inherit;
}

button {
  border: 0;
}

.app-shell {
  min-height: 100vh;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 12px clamp(14px, 4vw, 32px);
  color: #fff;
  background: #14352d;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.16);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
  font-weight: 800;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 8px;
  color: #14352d;
  background: var(--amber);
  font-weight: 900;
}

.nav {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.nav button,
.ghost-button,
.primary-button,
.small-button {
  cursor: pointer;
  border-radius: 8px;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}

.nav button {
  padding: 8px 12px;
  color: #fff;
  background: rgba(255, 255, 255, 0.12);
}

.nav button:hover,
.primary-button:hover,
.ghost-button:hover,
.small-button:hover {
  transform: translateY(-1px);
}

.screen {
  width: min(1180px, 100%);
  margin: 0 auto;
  padding: clamp(16px, 4vw, 32px);
}

.two-column {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(320px, 0.9fr);
  gap: 18px;
  align-items: stretch;
}

.card,
.stone-panel {
  border: 1px solid rgba(91, 73, 51, 0.16);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: var(--shadow);
}

.card {
  padding: clamp(16px, 3vw, 24px);
}

.stone-panel {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.86), rgba(255, 255, 255, 0.72)),
    linear-gradient(135deg, #eee2d0, #d9c7aa);
}

.page-title {
  margin: 0 0 10px;
  font-size: clamp(24px, 4vw, 38px);
  line-height: 1.18;
  letter-spacing: 0;
}

.section-title {
  margin: 0 0 12px;
  font-size: clamp(18px, 2vw, 22px);
  letter-spacing: 0;
}

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

.field {
  display: grid;
  gap: 7px;
  margin: 0 0 14px;
}

.field span {
  font-weight: 700;
}

input,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--ink);
  background: #fff;
  outline: none;
}

input {
  min-height: 44px;
  padding: 10px 12px;
}

textarea {
  min-height: 280px;
  padding: 12px;
  resize: vertical;
  font-family: Consolas, "Microsoft YaHei UI", monospace;
  line-height: 1.55;
}

input:focus,
textarea:focus {
  border-color: var(--moss);
  box-shadow: 0 0 0 3px rgba(31, 122, 91, 0.14);
}

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

.primary-button {
  min-height: 44px;
  padding: 0 18px;
  color: #fff;
  background: var(--moss);
  box-shadow: 0 10px 18px rgba(31, 122, 91, 0.2);
  font-weight: 800;
}

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

.ghost-button,
.small-button {
  min-height: 40px;
  padding: 0 14px;
  color: var(--ink);
  background: #edf6f1;
  border: 1px solid #c8ded3;
}

.small-button {
  min-height: 34px;
  padding: 0 10px;
  font-size: 14px;
}

.status {
  min-height: 24px;
  margin-top: 12px;
  color: var(--muted);
}

.status.error {
  color: var(--red);
}

.preview-list,
.result-table,
.word-detail-list {
  width: 100%;
  border-collapse: collapse;
}

.preview-list th,
.preview-list td,
.result-table th,
.result-table td,
.word-detail-list th,
.word-detail-list td {
  padding: 10px;
  border-bottom: 1px solid #edf0f4;
  text-align: left;
  vertical-align: middle;
}

.preview-list th,
.result-table th,
.word-detail-list th {
  color: var(--muted);
  font-size: 14px;
}

.share-box {
  display: grid;
  gap: 10px;
  margin-top: 16px;
  padding: 12px;
  border-radius: 8px;
  background: #f5fbf8;
  border: 1px solid #c8ded3;
}

.student-gate {
  position: relative;
  min-height: calc(100vh - 58px);
  overflow: hidden;
  background:
    linear-gradient(rgba(17, 44, 38, 0.45), rgba(17, 44, 38, 0.78)),
    radial-gradient(circle at 50% 10%, rgba(242, 184, 75, 0.45), transparent 38%),
    linear-gradient(145deg, #163e35 0%, #0f2621 64%, #1a1f24 100%);
  color: #fff;
}

.student-gate::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(90deg, rgba(255, 255, 255, 0.08) 1px, transparent 1px),
    linear-gradient(rgba(255, 255, 255, 0.07) 1px, transparent 1px);
  background-size: 54px 54px;
  mask-image: linear-gradient(to bottom, transparent, black 18%, black 80%, transparent);
}

.gate-content {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(300px, 0.95fr) minmax(320px, 1.05fr);
  gap: clamp(18px, 4vw, 42px);
  align-items: center;
  width: min(1120px, 100%);
  min-height: calc(100vh - 58px);
  margin: 0 auto;
  padding: clamp(18px, 5vw, 44px);
}

.gate-title {
  margin: 0;
  font-size: clamp(30px, 6vw, 56px);
  line-height: 1.08;
  letter-spacing: 0;
  text-wrap: balance;
}

.gate-subtitle {
  max-width: 560px;
  margin: 18px 0 0;
  color: rgba(255, 255, 255, 0.82);
  font-size: clamp(16px, 2.4vw, 20px);
  line-height: 1.65;
}

.start-panel {
  display: grid;
  gap: 18px;
  padding: clamp(16px, 3vw, 24px);
  border: 1px solid rgba(255, 255, 255, 0.24);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(8px);
  box-shadow: 0 26px 58px rgba(0, 0, 0, 0.28);
}

.start-panel input {
  border-color: rgba(255, 255, 255, 0.28);
}

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

.avatar-choice {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 122px;
  border: 2px solid rgba(255, 255, 255, 0.18);
  border-radius: 8px;
  color: #fff;
  background: rgba(255, 255, 255, 0.1);
  cursor: pointer;
}

.avatar-choice.is-active {
  border-color: var(--amber);
  background: rgba(242, 184, 75, 0.24);
}

.avatar-face {
  display: block;
  width: 86px;
  height: 76px;
  background-image: url("./assets/hero-actions-alpha.png");
  background-repeat: no-repeat;
  background-size: 500% 200%;
  filter: drop-shadow(0 9px 12px rgba(0, 0, 0, 0.28));
}

.avatar-boy {
  background-position: 0% 0%;
}

.avatar-girl {
  background-position: 0% 100%;
}

.avatar-label {
  font-weight: 800;
}

.monster-stage {
  position: relative;
  min-height: 340px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 8px;
  background:
    radial-gradient(circle at 28% 32%, rgba(255, 255, 255, 0.18), transparent 14%),
    linear-gradient(180deg, rgba(237, 246, 241, 0.16), rgba(0, 0, 0, 0.12));
  overflow: hidden;
}

.monster-stage .floor-tile {
  position: absolute;
  inset: 18px;
  border: 2px solid rgba(255, 255, 255, 0.14);
  border-radius: 8px;
}

.gate-hero,
.gate-monster {
  position: absolute;
  display: grid;
  place-items: center;
  border-radius: 8px;
  font-weight: 900;
}

.gate-hero {
  left: 14%;
  bottom: 19%;
  width: 74px;
  height: 74px;
  border-radius: 50%;
  background-image: url("./assets/hero-actions-alpha.png");
  background-size: 500% 200%;
  background-position: 0% 0%;
  background-repeat: no-repeat;
  filter: drop-shadow(0 10px 14px rgba(0, 0, 0, 0.24));
}

.gate-monster {
  min-width: 110px;
  height: 48px;
  background-image: url("./assets/gameplay-sprites-alpha.png");
  background-size: 600% 400%;
  background-repeat: no-repeat;
  border: 0;
  filter: drop-shadow(0 10px 14px rgba(0, 0, 0, 0.22));
}

.gate-monster.one {
  top: 18%;
  right: 16%;
  width: 118px;
  height: 84px;
  background-position: 20% 0%;
}

.gate-monster.two {
  right: 28%;
  bottom: 22%;
  width: 126px;
  height: 88px;
  background-position: 100% 0%;
}

.meaning-chip {
  position: absolute;
  left: 35%;
  top: 44%;
  padding: 10px 16px;
  border-radius: 8px;
  color: #0f5965;
  background: #ecfeff;
  border: 2px solid #06b6d4;
  font-weight: 800;
}

.game-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 280px;
  gap: 14px;
  height: calc(100vh - 58px);
  padding: 14px;
}

.game-main {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  min-width: 0;
  border-radius: 8px;
  overflow: hidden;
  background: var(--panel);
  box-shadow: var(--shadow);
}

.hud {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  padding: 10px 12px;
  border-bottom: 1px solid var(--line);
  background: #fffaf4;
  font-weight: 800;
}

.target {
  color: var(--moss-dark);
}

.canvas-wrap {
  position: relative;
  min-height: 0;
  background: var(--floor);
}

#gameCanvas {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 460px;
  touch-action: none;
  user-select: none;
}

.game-side {
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-height: 0;
}

.feedback-box {
  min-height: 112px;
  padding: 14px;
  border-radius: 8px;
  background: #fff7ed;
  border: 1px solid #fed7aa;
  line-height: 1.65;
}

.control-help {
  padding: 14px;
  border-radius: 8px;
  background: #f5fbf8;
  border: 1px solid #c8ded3;
  color: var(--muted);
  line-height: 1.65;
}

.settlement-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin: 16px 0;
}

.metric {
  padding: 16px;
  border-radius: 8px;
  background: #f8fafc;
  border: 1px solid var(--line);
}

.metric strong {
  display: block;
  margin-top: 6px;
  font-size: clamp(24px, 3vw, 34px);
}

.empty {
  padding: 20px;
  border: 1px dashed var(--line);
  border-radius: 8px;
  color: var(--muted);
  text-align: center;
}

.hidden {
  display: none !important;
}

@media (max-width: 900px) {
  .topbar {
    position: static;
    align-items: flex-start;
    flex-direction: column;
  }

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

  .two-column,
  .gate-content,
  .game-layout,
  .settlement-grid {
    grid-template-columns: 1fr;
  }

  .student-gate,
  .gate-content {
    min-height: auto;
  }

  .game-layout {
    height: auto;
  }

  #gameCanvas {
    height: min(64vh, 560px);
    min-height: 390px;
  }

  .game-side {
    order: 2;
  }
}

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

  .nav button {
    padding: 7px 9px;
  }

  .avatar-grid {
    grid-template-columns: 1fr;
  }

  .monster-stage {
    min-height: 250px;
  }

  .gate-title {
    font-size: 32px;
  }

  .hud {
    font-size: 14px;
  }

  #gameCanvas {
    height: 58vh;
    min-height: 340px;
  }
}