:root {
  --blue: #29b6f6;
  --blue-d: #0277bd;
  --green: #66bb6a;
  --green-d: #2e7d32;
  --orange: #ffa726;
  --red: #ef5350;
  --purple: #ab47bc;
  --ink: #37474f;
  --muted: #78909c;
  --radius: 20px;
  --shadow: 0 6px 18px rgba(0, 0, 0, .10);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  background: linear-gradient(160deg, #dff3fb 0%, #f6e7f7 100%);
  color: var(--ink);
  min-height: 100vh;
  -webkit-tap-highlight-color: transparent;
}
button { font-family: inherit; cursor: pointer; touch-action: manipulation; }

.topbar {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 16px;
  background: rgba(255, 255, 255, .78);
  backdrop-filter: blur(8px);
  box-shadow: var(--shadow);
  position: sticky; top: 0; z-index: 20;
}
.topbar h1 { margin: 0; font-size: 20px; flex: 1; text-align: center; }
.topbar-spacer { width: 76px; }

.btn {
  border: none; border-radius: 16px;
  padding: 10px 18px; font-size: 16px; font-weight: 700;
  color: var(--ink); background: #e0e0e0;
  box-shadow: 0 3px 8px rgba(0, 0, 0, .12);
  transition: transform .12s, box-shadow .12s;
}
.btn:active { transform: scale(.95); }
.btn-primary { background: linear-gradient(135deg, #81c784, #66bb6a); color: #fff; }
.btn-secondary { background: #fff; border: 2px solid var(--blue); color: var(--blue-d); }
.btn-ghost { background: rgba(255, 255, 255, .75); }
.btn-warn { background: #ffcdd2; color: #b71c1c; }
.btn-small { padding: 7px 12px; font-size: 14px; border-radius: 12px; }
.btn:disabled { opacity: .5; cursor: not-allowed; }

.game-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 18px; padding: 24px; max-width: 1100px; margin: 0 auto;
}
.card {
  display: block; width: 100%; text-align: center;
  background: #fff; border: none; border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 24px 16px;
  transition: transform .15s;
}
.card:active { transform: scale(.96); }
.card .icon { font-size: 54px; line-height: 1.1; }
.card h2 { margin: 10px 0 6px; font-size: 22px; color: var(--ink); }
.card p { margin: 0; color: #607d8b; font-size: 14px; line-height: 1.5; }

.game-page { padding: 16px; max-width: 1100px; margin: 0 auto; }
.game-topbar {
  display: flex; align-items: center; gap: 10px; justify-content: space-between;
  margin-bottom: 10px; flex-wrap: wrap;
}
.game-topbar h2 { margin: 0; font-size: 20px; }
.center { text-align: center; }
.muted { color: var(--muted); font-size: 14px; line-height: 1.6; }
.err { color: #d32f2f; font-weight: 600; }

.canvas-wrap {
  position: relative;
  display: flex; justify-content: center;
  padding: 4px;
}
canvas {
  display: block; width: 100%; height: auto;
  border-radius: 16px; background: #fff;
  box-shadow: var(--shadow);
  touch-action: none;
  user-select: none; -webkit-user-select: none;
}
#mz-canvas { max-width: 560px; }
#ob-canvas { max-width: 820px; }
#sh-canvas { max-width: 820px; }

.modal {
  position: fixed; inset: 0; z-index: 50;
  background: rgba(0, 0, 0, .45);
  display: flex; align-items: center; justify-content: center;
  padding: 16px;
}
.modal-card {
  background: #fff; border-radius: 24px;
  max-width: 660px; width: 100%; max-height: 88vh; overflow: auto;
  padding: 22px; box-shadow: 0 18px 50px rgba(0, 0, 0, .25);
}
.modal-card h2 { margin: 0 0 8px; }
.modal-actions {
  display: flex; gap: 10px; justify-content: flex-end;
  margin-top: 16px; flex-wrap: wrap;
}

.chips { display: flex; flex-wrap: wrap; gap: 8px; margin: 10px 0; }
.chip {
  border: 2px solid #cfe5ff; background: #eef6ff; color: var(--blue-d);
  border-radius: 20px; padding: 8px 14px; font-size: 14px; font-weight: 600;
}
.chip.active { background: var(--blue); border-color: var(--blue); color: #fff; }

textarea {
  width: 100%; padding: 10px 12px; font: inherit; font-size: 15px;
  border: 2px solid #cfd8dc; border-radius: 12px; resize: vertical;
}

.ai-status { margin-top: 10px; display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.ai-status p { margin: 0; }
.spinner {
  width: 30px; height: 30px; flex: none;
  border: 4px solid #e0e0e0; border-top-color: var(--blue);
  border-radius: 50%; animation: spin .8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* 找不同 */
.sd-menu { text-align: center; padding: 30px 10px; }
.sd-intro { font-size: 15px; line-height: 1.8; color: #455a64; max-width: 640px; margin: 0 auto 22px; }
.sd-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.sd-images { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.sd-fig {
  flex: 1 1 300px; max-width: 520px; margin: 0;
  background: #fff; border-radius: var(--radius);
  padding: 10px; box-shadow: var(--shadow);
}
.sd-fig figcaption { text-align: center; font-weight: 700; color: var(--muted); margin-bottom: 8px; font-size: 15px; }
.sd-imgwrap {
  position: relative; width: 100%; overflow: hidden;
  border-radius: 12px; background: #eceff1;
  touch-action: none;
}
.sd-imgwrap img {
  display: block; width: 100%; height: 100%;
  object-fit: fill; pointer-events: none; user-select: none;
  z-index: 0;
}
.sd-imgwrap canvas { position: absolute; inset: 0; z-index: 2; background: transparent; box-shadow: none; }
.sd-patch {
  position: absolute; inset: 0; z-index: 1;
  background-repeat: no-repeat; pointer-events: none;
}
.sd-timer { text-align: center; margin-top: 12px; font-size: 17px; font-weight: 700; color: var(--blue-d); }
.sd-single { max-width: 760px; margin: 0 auto; }
.sd-mode-options { display: flex; flex-direction: column; gap: 12px; margin-top: 12px; }
.sd-mode {
  display: flex; gap: 14px; align-items: center; text-align: left;
  background: #f5f7fa; border: 3px solid transparent; border-radius: 16px;
  padding: 14px; transition: transform .12s;
}
.sd-mode:active { transform: scale(.98); }
.sd-mode .mode-icon { font-size: 34px; flex: none; }
.sd-mode .mode-title { font-weight: 800; font-size: 16px; margin-bottom: 3px; }
.sd-mode .mode-desc { font-size: 13px; color: var(--muted); line-height: 1.5; }
.so-actions { display: flex; gap: 8px; flex-wrap: wrap; justify-content: flex-end; }

.gal-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(130px, 1fr)); gap: 12px; margin-top: 12px; }
.gal-item {
  background: #fff; border: 1px solid #e0e0e0; border-radius: 14px;
  overflow: hidden; box-shadow: 0 2px 8px rgba(0, 0, 0, .08);
}
.gal-item img { display: block; width: 100%; aspect-ratio: 1/1; object-fit: cover; }
.gal-name { font-size: 12px; color: var(--muted); padding: 6px 8px 2px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.gal-btns { display: flex; gap: 6px; padding: 6px 8px 8px; }
.empty { color: var(--muted); text-align: center; padding: 20px 0; }

/* 找相近颜色 */
.cm-info {
  display: flex; justify-content: space-between; align-items: center;
  max-width: 480px; margin: 6px auto 4px; font-size: 15px; font-weight: 600;
}
.cm-bar { height: 14px; background: #eceff1; border-radius: 10px; overflow: hidden; margin: 6px auto 14px; max-width: 480px; }
.cm-bar-inner { height: 100%; background: linear-gradient(90deg, #66bb6a, #ffb74d, #ef5350); border-radius: 10px; transition: width .1s linear; }
.cm-board { display: grid; gap: 8px; max-width: 480px; margin: 0 auto; }
.cm-tile {
  aspect-ratio: 1/1; border: none; border-radius: 14px;
  box-shadow: inset 0 0 0 3px rgba(255, 255, 255, .35), 0 3px 8px rgba(0, 0, 0, .10);
  transition: transform .1s;
}
.cm-tile:active { transform: scale(.93); }
.cm-tile.found { outline: 5px solid #2e7d32; transform: scale(.96); }
.cm-tile.wrong { animation: shake .3s; }
@keyframes shake { 0%, 100% { transform: translateX(0); } 25% { transform: translateX(-8px); } 75% { transform: translateX(8px); } }

/* 舒尔特方格 */
.st-next { margin: 8px 0; font-size: 18px; }
.st-grid { display: grid; gap: 8px; max-width: 480px; margin: 0 auto; }
.st-tile {
  aspect-ratio: 1/1; border: none; border-radius: 16px;
  background: linear-gradient(145deg, #e3f2fd, #bbdefb);
  font-size: clamp(18px, 5vw, 30px); font-weight: 800; color: #0d47a1;
  box-shadow: 0 4px 10px rgba(0, 0, 0, .12), inset 0 -3px 0 rgba(0, 0, 0, .12);
  transition: transform .1s;
}
.st-tile:active { transform: scale(.93); }
.st-tile.ok { background: linear-gradient(145deg, #c8e6c9, #a5d6a7); color: #1b5e20; }
.st-tile.wrong { animation: shake .3s; background: #ffcdd2 !important; color: #b71c1c; }

.win-overlay {
  position: fixed; inset: 0; z-index: 60;
  background: rgba(0, 0, 0, .5);
  display: flex; align-items: center; justify-content: center; padding: 16px;
}
.win-card {
  background: #fff; border-radius: 24px; padding: 26px; text-align: center;
  max-width: 400px; width: 100%; box-shadow: 0 18px 50px rgba(0, 0, 0, .3);
  animation: pop .3s;
}
.win-card h2 { margin: 0 0 10px; }
.win-card p { margin: 6px 0; font-size: 17px; }
.stars { font-size: 30px; letter-spacing: 4px; }
.rank { font-size: 20px !important; font-weight: 800; color: var(--purple); }
@keyframes pop { from { transform: scale(.7); opacity: 0; } to { transform: scale(1); opacity: 1; } }

.flash-red {
  position: fixed; inset: 0; z-index: 90; pointer-events: none;
  background: rgba(255, 0, 0, .35);
  animation: fadeout .45s forwards;
}
@keyframes fadeout { from { opacity: 1; } to { opacity: 0; } }
.shake { animation: shake .4s; }

.float-plus {
  position: absolute; color: #2e7d32; font-weight: 900; font-size: 26px;
  pointer-events: none; z-index: 5;
  transform: translate(-50%, -50%);
  animation: floatUp .8s forwards;
}
@keyframes floatUp {
  from { opacity: 1; }
  to { opacity: 0; transform: translate(-50%, -230%); }
}

/* 防触电（电流急急棒） */
.sh-menu { max-width: 720px; margin: 0 auto; }
.sh-story {
  font-size: 15px; line-height: 1.8; color: #455a64;
  background: rgba(255, 255, 255, .78); border-radius: 16px;
  padding: 14px 16px; box-shadow: var(--shadow);
}
.sh-levels {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 12px; margin: 16px 0;
}
.sh-level {
  background: #fff; border: none; border-radius: 16px;
  padding: 14px 10px; box-shadow: var(--shadow); text-align: center;
  transition: transform .12s;
}
.sh-level:active { transform: scale(.95); }
.sh-level .lv-no { font-size: 13px; color: var(--muted); }
.sh-level .lv-name { font-size: 17px; font-weight: 800; margin: 4px 0; }
.sh-level .lv-stars { font-size: 15px; letter-spacing: 2px; color: #ffb300; }
.sh-skins { display: flex; gap: 10px; flex-wrap: wrap; justify-content: center; margin-top: 8px; }
.sh-skin {
  width: 110px; background: #fff; border: none; border-radius: 16px;
  padding: 12px 8px; box-shadow: var(--shadow); text-align: center;
}
.sh-skin.active { outline: 4px solid var(--blue); }
.sh-skin.locked { opacity: .55; }
.sh-skin .skin-emoji { font-size: 34px; }
.sh-skin .skin-name { font-weight: 700; font-size: 14px; margin: 4px 0 2px; }
.sh-skin .skin-need { font-size: 12px; color: var(--muted); }
.sh-progress {
  max-width: 600px; margin: 8px auto 0; height: 12px;
  background: rgba(255, 255, 255, .85); border-radius: 8px;
  overflow: hidden; box-shadow: var(--shadow);
}
.sh-progress-inner {
  height: 100%; width: 0%;
  background: linear-gradient(90deg, #aed581, #66bb6a);
  border-radius: 8px; transition: width .15s linear;
}

.toast {
  position: fixed; left: 50%; bottom: 28px; z-index: 100;
  transform: translateX(-50%);
  background: rgba(55, 71, 79, .94); color: #fff;
  padding: 10px 20px; border-radius: 30px; font-size: 14px;
  box-shadow: var(--shadow); animation: pop .25s;
}

.footer { text-align: center; padding: 20px 16px 30px; color: var(--muted); font-size: 13px; line-height: 1.6; }

@media (max-width: 560px) {
  .topbar h1 { font-size: 17px; }
  .game-grid { padding: 16px; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 12px; }
  .card { padding: 16px 10px; }
  .card .icon { font-size: 42px; }
  .card h2 { font-size: 18px; }
  .card p { font-size: 12px; }
  .game-topbar h2 { font-size: 16px; }
}