:root {
  color-scheme: light;
  --bg: #eef3f6;
  --panel: #ffffff;
  --panel-soft: #f7faf9;
  --ink: #16202a;
  --muted: #667384;
  --line: #d8e2e8;
  --line-strong: #afbec8;
  --accent: #0f766e;
  --accent-strong: #115e59;
  --accent-soft: #e7f4f1;
  --amber: #d97706;
  --amber-soft: #fff4df;
  --blue: #2563eb;
  --good: #15803d;
  --warn: #b45309;
  --danger: #dc2626;
  --shadow: 0 18px 42px rgba(22, 32, 42, 0.1);
  --radius: 8px;
}

* {
  box-sizing: border-box;
  min-width: 0;
}

body {
  margin: 0;
  min-height: 100vh;
  overflow-x: hidden;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.86), rgba(238, 243, 246, 0.78) 42%),
    radial-gradient(circle at 16% 4%, rgba(15, 118, 110, 0.1), transparent 28%),
    var(--bg);
  color: var(--ink);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    "PingFang SC", "Microsoft YaHei", sans-serif;
}

body.map-fullscreen-open {
  overflow: hidden;
}

button,
select {
  font: inherit;
}

button {
  touch-action: manipulation;
}

.app-shell {
  width: min(1440px, calc(100% - 36px));
  margin: 0 auto;
  padding: 24px 0 30px;
  overflow-x: hidden;
}

.topbar {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 20px;
  align-items: end;
  margin-bottom: 16px;
  max-width: 100%;
}

.title-group {
  min-width: 0;
}

.eyebrow {
  display: none;
}

h1,
h2 {
  margin: 0;
  letter-spacing: 0;
}

h1 {
  font-size: clamp(2.2rem, 5vw, 4.5rem);
  line-height: 0.96;
  font-weight: 950;
}

.map-subtitle {
  display: block;
  max-width: 720px;
  margin-top: 12px;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.7;
}

h2 {
  min-height: 2.25rem;
  margin-top: 6px;
  font-size: 1.72rem;
  line-height: 1.15;
  font-weight: 950;
}

.stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(118px, 1fr));
  gap: 10px;
  min-width: 270px;
}

.stat {
  min-width: 0;
  padding: 14px 16px;
  border: 1px solid rgba(15, 118, 110, 0.2);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.82);
  box-shadow: 0 10px 26px rgba(22, 32, 42, 0.07);
}

.stat span {
  display: block;
  color: var(--accent-strong);
  font-size: 1.38rem;
  font-weight: 950;
  line-height: 1.1;
}

.stat small {
  display: block;
  margin-top: 4px;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 750;
}

.scope-tabs,
.mode-tabs {
  display: inline-grid;
  gap: 4px;
  margin-bottom: 10px;
  padding: 4px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.78);
  max-width: 100%;
}

.scope-tabs {
  grid-template-columns: repeat(2, minmax(132px, 1fr));
  margin-right: 10px;
}

.mode-tabs {
  grid-template-columns: repeat(2, minmax(132px, 1fr));
  margin-bottom: 14px;
}

.scope-tabs button,
.mode-tabs button {
  min-height: 42px;
  border: 0;
  border-radius: 6px;
  background: transparent;
  color: #405062;
  font-weight: 900;
  cursor: pointer;
}

.scope-tabs button:hover,
.mode-tabs button:hover {
  background: #f4f8f8;
}

.scope-tabs button.active,
.mode-tabs button.active {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 8px 18px rgba(15, 118, 110, 0.24);
}

.game-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 370px;
  gap: 16px;
  align-items: start;
  max-width: 100%;
}

.map-panel,
.side-panel {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.9);
  box-shadow: var(--shadow);
  max-width: 100%;
}

.map-panel {
  position: sticky;
  top: 16px;
  padding: 12px;
}

.map-tools {
  position: absolute;
  z-index: 800;
  top: 22px;
  right: 22px;
  display: flex;
  gap: 8px;
}

.map-tools button {
  min-height: 36px;
  padding: 0 12px;
  border: 1px solid rgba(15, 118, 110, 0.28);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.94);
  color: var(--accent-strong);
  box-shadow: 0 10px 24px rgba(22, 32, 42, 0.14);
  font-size: 0.86rem;
  font-weight: 950;
  cursor: pointer;
}

.map-tools button:hover,
.map-tools button.active {
  background: var(--accent);
  color: #fff;
}

.map-panel.is-fullscreen {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: grid;
  grid-template-rows: 1fr;
  padding: 10px;
  border: 0;
  border-radius: 0;
  background: #eef5f9;
  width: 100vw;
  height: 100vh;
  height: 100dvh;
}

.map-panel.is-fullscreen .map-wrap {
  height: 100%;
  min-height: 100%;
}

.map-magnifier {
  --lens-size: 168px;
  position: absolute;
  z-index: 900;
  top: 0;
  left: 0;
  width: var(--lens-size);
  height: var(--lens-size);
  overflow: hidden;
  border: 3px solid #fff;
  border-radius: 50%;
  background: #eef5f9;
  box-shadow:
    0 18px 42px rgba(22, 32, 42, 0.28),
    0 0 0 1px rgba(15, 118, 110, 0.25);
  pointer-events: none;
}

.map-magnifier[hidden] {
  display: none;
}

.magnifier-map {
  width: 100%;
  height: 100%;
}

.map-wrap {
  width: 100%;
  min-height: 660px;
  height: calc(100vh - 178px);
  border-radius: 6px;
  background:
    linear-gradient(180deg, #edf7fa, #e7f1f4 52%, #f4f8f8),
    #eef5f9;
  overflow: hidden;
}

.leaflet-container {
  background:
    linear-gradient(180deg, #edf7fa, #e7f1f4 52%, #f4f8f8),
    #eef5f9;
  color: var(--ink);
  font-family: inherit;
}

.leaflet-control-zoom {
  overflow: hidden;
  border: 1px solid rgba(175, 190, 200, 0.85) !important;
  border-radius: 8px !important;
  box-shadow: 0 10px 26px rgba(22, 32, 42, 0.14) !important;
}

.leaflet-control-zoom a {
  color: var(--ink) !important;
}

.province-shape {
  transition:
    fill-opacity 140ms ease,
    stroke-width 140ms ease,
    filter 140ms ease;
}

.province-label-icon {
  width: max-content !important;
  height: auto !important;
  margin: 0 !important;
  padding: 0 !important;
  border: 0;
  background: transparent;
}

.province-label-icon span {
  display: block;
  color: #0f172a;
  font-size: 0.9rem;
  font-weight: 950;
  line-height: 1;
  text-align: center;
  text-shadow:
    0 1px 0 rgba(255, 255, 255, 0.96),
    1px 0 0 rgba(255, 255, 255, 0.96),
    0 -1px 0 rgba(255, 255, 255, 0.96),
    -1px 0 0 rgba(255, 255, 255, 0.96),
    0 4px 10px rgba(15, 23, 42, 0.14);
  transform: translate(-50%, -50%);
  white-space: nowrap;
}

.side-panel {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 12px;
}

.readout,
.challenge-box,
.result-box,
.study-box,
.recent-box {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
}

.readout {
  padding: 18px;
  background:
    linear-gradient(135deg, var(--panel), var(--panel-soft));
}

.panel-label {
  margin: 0;
  color: var(--accent-strong);
  font-size: 0.76rem;
  font-weight: 950;
}

.details {
  display: grid;
  gap: 8px;
  margin: 16px 0 0;
}

.details div {
  display: grid;
  grid-template-columns: 78px minmax(0, 1fr);
  gap: 10px;
  align-items: baseline;
  min-width: 0;
  padding-top: 8px;
  border-top: 1px solid #edf2f5;
}

.details dt {
  color: var(--muted);
  font-size: 0.84rem;
  font-weight: 750;
}

.details dd {
  min-width: 0;
  margin: 0;
  font-weight: 900;
  overflow-wrap: anywhere;
}

.challenge-box,
.result-box,
.study-box,
.recent-box {
  padding: 14px;
}

.target {
  display: grid;
  place-items: center;
  min-height: 58px;
  margin-top: 10px;
  padding: 8px 10px;
  border: 1px solid rgba(217, 119, 6, 0.24);
  border-radius: var(--radius);
  background: var(--amber-soft);
  color: #7c3d12;
  font-size: 1.04rem;
  font-weight: 950;
  text-align: center;
}

.quick-actions {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  margin-top: 10px;
}

.quick-actions button,
.controls button {
  border-radius: var(--radius);
  font-weight: 950;
  cursor: pointer;
  transition:
    transform 140ms ease,
    background 140ms ease,
    border-color 140ms ease,
    box-shadow 140ms ease;
}

.quick-actions button {
  min-height: 38px;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--accent-strong);
}

.quick-actions button:hover {
  border-color: var(--accent);
  background: var(--accent-soft);
}

.level-stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
  margin-top: 10px;
}

.level-stats div {
  min-width: 0;
  padding: 10px 6px;
  border: 1px solid #e3ebef;
  border-radius: var(--radius);
  background: #f8fbfb;
  text-align: center;
}

.level-stats span {
  display: block;
  color: var(--blue);
  font-size: 1.02rem;
  font-weight: 950;
  line-height: 1.1;
}

.level-stats small {
  display: block;
  margin-top: 3px;
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 750;
}

.feedback {
  min-height: 1.4em;
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.55;
}

.feedback.good {
  color: var(--good);
  font-weight: 900;
}

.feedback.warn {
  color: var(--warn);
  font-weight: 900;
}

.controls {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 108px 76px;
  gap: 8px;
}

.controls button {
  min-height: 46px;
  border: 1px solid transparent;
  background: var(--accent);
  color: #fff;
  box-shadow: 0 12px 24px rgba(15, 118, 110, 0.22);
}

.controls button:hover {
  background: var(--accent-strong);
}

.controls button:active,
.quick-actions button:active {
  transform: translateY(1px);
}

.controls button.secondary {
  border-color: var(--line);
  background: #fff;
  color: var(--ink);
  box-shadow: none;
}

.controls button.secondary:hover {
  border-color: var(--line-strong);
  background: #f7faf9;
}

.level-result {
  display: grid;
  place-items: center;
  min-height: 54px;
  margin-top: 10px;
  padding: 8px;
  border: 1px dashed #cad7de;
  border-radius: var(--radius);
  background: #f8fbfb;
  color: var(--muted);
  font-size: 0.94rem;
  font-weight: 900;
  text-align: center;
}

.level-result.good {
  border-color: #86efac;
  background: #effdf4;
  color: var(--good);
}

.level-result.warn {
  border-color: #fcd34d;
  background: #fffbeb;
  color: var(--warn);
}

.study-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 10px;
}

.study-tip {
  margin: 5px 0 0;
  color: var(--muted);
  font-size: 0.84rem;
  line-height: 1.55;
}

.name-toggle {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  flex: 0 0 auto;
  min-height: 34px;
  padding: 0 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  color: var(--ink);
  font-size: 0.84rem;
  font-weight: 900;
  cursor: pointer;
}

.name-toggle input {
  width: 16px;
  height: 16px;
  accent-color: var(--accent);
}

.zone-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-top: 12px;
}

.zone-buttons button {
  min-height: 32px;
  padding: 0 10px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: #fff;
  color: #405062;
  font-size: 0.82rem;
  font-weight: 900;
  cursor: pointer;
}

.zone-buttons button:hover,
.zone-buttons button.active {
  border-color: rgba(15, 118, 110, 0.46);
  background: var(--accent-soft);
  color: var(--accent-strong);
}

.study-toolbar {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 8px;
  margin-top: 10px;
}

.study-zone-select,
.study-list-toggle {
  min-height: 38px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  color: var(--ink);
  font-weight: 900;
}

.study-zone-select {
  width: 100%;
  padding: 0 10px;
}

.study-list-toggle {
  padding: 0 10px;
  color: var(--accent-strong);
  cursor: pointer;
}

.study-list-toggle:hover {
  border-color: rgba(15, 118, 110, 0.46);
  background: var(--accent-soft);
}

.study-current {
  margin-top: 10px;
  padding: 12px;
  border: 1px solid rgba(15, 118, 110, 0.2);
  border-radius: var(--radius);
  background:
    linear-gradient(135deg, #ffffff, #f3faf8);
}

.study-current h3 {
  margin: 0;
  color: var(--ink);
  font-size: 1.18rem;
  line-height: 1.18;
  font-weight: 950;
}

.study-current-meta,
.study-current-hint {
  margin: 6px 0 0;
  line-height: 1.42;
}

.study-current-meta {
  color: var(--accent-strong);
  font-size: 0.9rem;
  font-weight: 900;
}

.study-current-hint {
  color: var(--muted);
  font-size: 0.84rem;
}

.study-nav {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
  margin-top: 10px;
}

.study-nav button,
.study-test-button {
  min-height: 38px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  color: var(--accent-strong);
  font-weight: 950;
  cursor: pointer;
}

.study-nav button:hover,
.study-test-button:hover {
  border-color: rgba(15, 118, 110, 0.46);
  background: var(--accent-soft);
}

.study-list-panel {
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px solid #edf2f5;
}

.study-list-title {
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 900;
}

.study-list {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-top: 8px;
}

.study-item {
  min-height: 32px;
  padding: 0 10px;
  border: 1px solid #e2ebef;
  border-radius: var(--radius);
  background: #fff;
  color: #263241;
  font-size: 0.86rem;
  font-weight: 950;
  cursor: pointer;
  text-align: center;
}

.study-item:hover,
.study-item.active {
  border-color: rgba(15, 118, 110, 0.48);
  background: var(--accent-soft);
  color: var(--accent-strong);
}

.study-test-button {
  width: 100%;
  margin-top: 10px;
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.study-test-button:hover {
  background: var(--accent-strong);
  color: #fff;
}

.recent-list {
  display: grid;
  gap: 8px;
  min-height: 106px;
  margin: 12px 0 0;
  padding: 0;
  list-style: none;
}

.recent-list li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 34px;
  padding: 7px 10px;
  border-radius: 7px;
  background: #f4f8f8;
  color: #263241;
  font-size: 0.9rem;
  font-weight: 850;
}

.recent-list .empty {
  justify-content: center;
  color: var(--muted);
  font-weight: 700;
}

.is-study-mode .challenge-box,
.is-study-mode .controls,
.is-study-mode .result-box,
.is-study-mode .recent-box {
  display: none;
}

.is-level-mode .study-box {
  display: none;
}

@media (max-width: 1100px) {
  .app-shell {
    width: min(100% - 24px, 1440px);
  }

  .game-layout {
    grid-template-columns: 1fr;
  }

  .map-panel {
    position: static;
  }

  .map-wrap {
    min-height: 520px;
    height: 62vh;
  }

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

  .challenge-box,
  .study-box {
    grid-column: 1 / -1;
  }

  .controls {
    grid-column: 1 / -1;
    grid-row: 2;
  }
}

@media (max-width: 720px) {
  .app-shell {
    width: min(100% - 18px, 1440px);
    padding: 16px 0 22px;
  }

  .topbar {
    grid-template-columns: 1fr;
    align-items: stretch;
  }

  .map-subtitle {
    font-size: 0.92rem;
  }

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

  .scope-tabs,
  .mode-tabs {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    width: 100%;
    margin-right: 0;
  }

  .scope-tabs button,
  .mode-tabs button {
    min-width: 0;
    padding: 0 8px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .map-panel,
  .side-panel {
    border-radius: 7px;
  }

  .map-panel {
    padding: 8px;
  }

  .map-tools {
    top: 14px;
    right: 14px;
    gap: 6px;
  }

  .map-tools button {
    min-height: 34px;
    padding: 0 9px;
    font-size: 0.78rem;
  }

  .map-wrap {
    min-height: 390px;
    height: 52vh;
  }

  .province-label-icon span {
    font-size: 0.76rem;
  }

  .side-panel {
    grid-template-columns: 1fr;
    padding: 10px;
  }

  .controls {
    grid-template-columns: 1fr;
    grid-column: auto;
    grid-row: auto;
  }

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

  .study-head {
    flex-direction: row;
    align-items: center;
  }

  .name-toggle {
    width: auto;
  }

  .study-toolbar {
    grid-template-columns: minmax(0, 1fr) 112px;
  }

  .study-list-toggle {
    padding: 0 6px;
    font-size: 0.82rem;
  }

  .study-nav {
    gap: 6px;
  }

  .study-nav button {
    padding: 0 6px;
    font-size: 0.86rem;
  }

  .study-test-button {
    width: 100%;
  }

  .zone-buttons button,
  .study-item {
    flex: 1 1 calc(25% - 8px);
  }
}