/* ===== 英语岛大冒险 · 设计系统 ===== */
:root{
  --cream:#FFFAF0;
  --yellow:#FFC857;
  --coral:#FF8C7A;
  --blue:#6BB6E0;
  --blue-deep:#2E8FC7;
  --ink:#4A423E;
  --ink-soft:#7A6F67;
  --line:#E7D8C2;
  --white:#FFFFFF;
  --good:#3FA66B;
  --bad:#E2604C;
  --shadow:0 10px 30px rgba(120,90,50,.12);
  --radius:24px;
  --font-head:"Noto Serif SC","Songti SC",ui-serif,Georgia,serif;
  --font-ui:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-en:"Comic Neue","Comic Sans MS","Chalkboard SE",cursive;
}
*{box-sizing:border-box;margin:0;padding:0;-webkit-tap-highlight-color:transparent;}
html,body{height:100%;}
body{
  font-family:var(--font-ui);
  color:var(--ink);
  background:
    radial-gradient(1200px 600px at 50% -10%, #FFF6E2 0%, var(--cream) 55%) fixed;
  display:flex;justify-content:center;
}
#app{
  width:100%;max-width:760px;min-height:100vh;
  display:flex;flex-direction:column;
  background:var(--cream);
  box-shadow:0 0 60px rgba(120,90,50,.08);
  position:relative;overflow:hidden;
}

/* 顶栏 */
#topbar{
  position:sticky;top:0;z-index:20;
  height:60px;flex:0 0 60px;
  display:flex;align-items:center;gap:8px;
  padding:0 14px;
  background:rgba(255,250,240,.92);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
#top-title{font-family:var(--font-head);font-weight:700;font-size:18px;flex:1;text-align:center;color:var(--ink);}
.top-right{display:flex;gap:6px;}
.icon-btn{
  width:42px;height:42px;border:none;border-radius:14px;
  background:var(--white);box-shadow:0 2px 8px rgba(120,90,50,.12);
  font-size:20px;cursor:pointer;display:flex;align-items:center;justify-content:center;
  transition:transform .08s ease;
}
.icon-btn:active{transform:scale(.92);}
.icon-btn.hidden{display:none;}

/* 屏幕容器 */
#screen{flex:1;overflow-y:auto;padding:18px 18px 32px;-webkit-overflow-scrolling:touch;}

/* 通用标题/文本 */
.screen-title{font-family:var(--font-head);font-weight:700;font-size:28px;color:var(--ink);margin:6px 0 4px;}
.screen-sub{color:var(--ink-soft);font-size:15px;margin-bottom:18px;}
.center{text-align:center;}

/* 卡片 */
.card{
  background:var(--white);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:20px;margin-bottom:14px;
}
.pill{
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 18px;border-radius:999px;
  background:var(--white);box-shadow:0 2px 8px rgba(120,90,50,.12);
  font-weight:600;font-size:15px;color:var(--ink);cursor:pointer;border:none;
}
.btn{
  border:none;border-radius:999px;cursor:pointer;font-family:var(--font-ui);
  font-weight:700;font-size:17px;padding:15px 26px;
  box-shadow:var(--shadow);transition:transform .08s ease, filter .15s;
}
.btn:active{transform:translateY(1px) scale(.99);}
.btn-primary{background:linear-gradient(180deg,#FF9E8C,var(--coral));color:#fff;}
.btn-yellow{background:linear-gradient(180deg,#FFD873,var(--yellow));color:#5a4a2a;}
.btn-blue{background:linear-gradient(180deg,#8CC8EA,var(--blue));color:#fff;}
.btn-ghost{background:var(--white);color:var(--ink-soft);box-shadow:0 2px 8px rgba(120,90,50,.12);}
.btn[disabled]{opacity:.45;cursor:not-allowed;filter:grayscale(.3);}
.btn-row{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-top:8px;}

/* 进度条 */
.progress{height:14px;border-radius:999px;background:#F0E4D2;overflow:hidden;}
.progress > i{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,var(--yellow),var(--coral));transition:width .3s;}

/* 文本链接（跳过/回退） */
.link{
  display:inline-block;color:var(--blue-deep);font-weight:700;font-size:15px;
  background:#EAF6FD;padding:9px 16px;border-radius:999px;cursor:pointer;
  border:none;
}
.link:active{transform:scale(.97);}

/* 单词展示 */
.word-show{text-align:center;padding:10px 0 4px;}
.emoji-big{font-size:96px;line-height:1;filter:drop-shadow(0 8px 14px rgba(120,90,50,.18));}
.word-en{font-family:var(--font-en);font-size:40px;font-weight:700;color:var(--ink);margin-top:8px;}
.word-en.small{font-size:26px;}
.word-ph{color:var(--ink-soft);font-size:18px;margin-top:2px;}
.word-zh{color:var(--coral);font-size:18px;margin-top:2px;font-weight:600;}

/* 听音选图 选项 */
.opt-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:16px;}
.opt{
  background:var(--white);border:3px solid transparent;border-radius:20px;
  box-shadow:var(--shadow);padding:16px;cursor:pointer;text-align:center;
  display:flex;flex-direction:column;align-items:center;gap:8px;
  transition:transform .08s, border-color .15s;
}
.opt:active{transform:scale(.97);}
.opt .emoji-big{font-size:64px;}
.opt .opt-en{font-family:var(--font-en);font-size:22px;font-weight:700;}
.opt.correct{border-color:var(--good);background:#EAF8EF;}
.opt.wrong{border-color:var(--bad);background:#FDECEA;}
.opt.dim{opacity:.5;}

/* 拼写键盘 */
.slots{display:flex;gap:10px;justify-content:center;margin:18px 0;flex-wrap:wrap;}
.slot{
  width:48px;height:56px;border-radius:12px;background:var(--white);
  box-shadow:var(--shadow);display:flex;align-items:center;justify-content:center;
  font-family:var(--font-en);font-size:28px;font-weight:700;text-transform:lowercase;
  border:2px solid var(--line);
}
.slot.filled{border-color:var(--blue);color:var(--blue-deep);}
.keyboard{display:grid;grid-template-columns:repeat(5,1fr);gap:10px;max-width:420px;margin:14px auto 0;}
.key{
  background:var(--white);border:none;border-radius:14px;box-shadow:var(--shadow);
  height:54px;font-family:var(--font-en);font-size:24px;font-weight:700;
  text-transform:uppercase;cursor:pointer;color:var(--ink);
}
.key:active{transform:scale(.94);}
.key.used{opacity:.35;}

/* 地图 */
.map-wrap{position:relative;border-radius:var(--radius);overflow:hidden;
  box-shadow:var(--shadow);min-height:440px;margin-bottom:14px;
  background:url('assets/scenes/island-map.png') center/cover no-repeat, #BfE8F2;}
.map-wrap::before{content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(62% 58% at 50% 48%, rgba(255,255,255,.5), rgba(255,255,255,0) 72%);}
.map-title{position:absolute;top:12px;left:0;right:0;text-align:center;
  font-family:var(--font-head);font-weight:700;font-size:20px;color:#2c5a4a;text-shadow:0 1px 0 #fff;}
.map-node{
  position:absolute;transform:translate(-50%,-50%);
  width:84px;height:84px;border-radius:50%;background:var(--white);
  box-shadow:0 6px 16px rgba(40,80,70,.25);display:flex;flex-direction:column;
  align-items:center;justify-content:center;cursor:pointer;border:4px solid var(--yellow);
  transition:transform .1s;
}
.map-node:active{transform:translate(-50%,-50%) scale(.93);}
.map-node .mn-emoji{font-size:34px;}
.map-node .mn-enemy{width:34px;height:34px;object-fit:contain;}
.map-node .mn-label{font-size:11px;font-weight:700;color:var(--ink);margin-top:2px;}
.map-node.locked{border-color:#cfcfcf;filter:grayscale(.6);opacity:.7;cursor:default;}
.map-node.done{border-color:var(--good);}
.map-node.current{border-color:var(--coral);animation:pulse 1.4s infinite;}
@keyframes pulse{0%,100%{box-shadow:0 6px 16px rgba(40,80,70,.25);}50%{box-shadow:0 6px 22px rgba(255,140,122,.7);}}
.map-hint{position:absolute;bottom:10px;left:0;right:0;text-align:center;
  font-size:12px;color:#3a6050;background:rgba(255,255,255,.6);margin:0 40px;padding:6px;border-radius:12px;}

/* 档案卡 */
.profile-grid{display:grid;grid-template-columns:1fr 1fr 1fr;gap:12px;margin:14px 0;}
.char-card{background:var(--white);border-radius:20px;box-shadow:var(--shadow);padding:16px 10px;text-align:center;cursor:pointer;border:3px solid transparent;}
.char-card.sel{border-color:var(--coral);}
.char-emoji{font-size:54px;}
.char-name{font-weight:700;margin-top:6px;}
.grade-toggle{display:flex;gap:10px;justify-content:center;margin:10px 0 18px;}
.grade-toggle .pill.sel{background:var(--blue);color:#fff;}

/* 掌握度圆点 */
.dots{display:flex;gap:5px;justify-content:center;margin-top:8px;}
.dots i{width:11px;height:11px;border-radius:50%;background:#E7D8C2;display:inline-block;}
.dots i.on{background:var(--good);}
.dots i.top{background:var(--yellow);}

/* 单词本 */
.unit-list{display:flex;flex-direction:column;gap:10px;}
.unit-row{background:var(--white);border-radius:18px;box-shadow:var(--shadow);padding:14px 16px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;}
.unit-row .u-title{font-weight:700;}
.word-chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px;}
.chip{background:#FFF3D6;border-radius:12px;padding:8px 10px;font-size:13px;display:flex;flex-direction:column;align-items:center;gap:2px;min-width:62px;}
.chip .c-en{font-family:var(--font-en);font-weight:700;font-size:15px;}
.chip .c-dot{width:9px;height:9px;border-radius:50%;background:#E7D8C2;}
.chip .c-dot.on{background:var(--good);}

/* 成就 */
.stat-row{display:grid;grid-template-columns:1fr 1fr 1fr;gap:12px;margin-bottom:14px;}
.stat-card{background:var(--white);border-radius:18px;box-shadow:var(--shadow);padding:16px;text-align:center;}
.stat-num{font-family:var(--font-head);font-size:34px;font-weight:700;color:var(--coral);}
.stat-lbl{font-size:13px;color:var(--ink-soft);margin-top:2px;}
.badge-wall{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;}
.badge{background:var(--white);border-radius:18px;box-shadow:var(--shadow);padding:16px;text-align:center;}
.badge .b-emoji{font-size:46px;filter:grayscale(1);opacity:.4;}
.badge.on .b-emoji{filter:none;opacity:1;}
.badge .b-name{font-size:13px;font-weight:700;margin-top:4px;}
.badge.on .b-name{color:var(--good);}

/* 设置 */
.set-row{display:flex;align-items:center;justify-content:space-between;background:var(--white);border-radius:18px;box-shadow:var(--shadow);padding:16px 18px;margin-bottom:12px;}
.set-row .s-label{font-weight:600;}
.set-row .s-sub{font-size:12px;color:var(--ink-soft);margin-top:2px;}
.toggle{width:60px;height:34px;border-radius:999px;background:#E7D8C2;position:relative;cursor:pointer;transition:background .2s;border:none;}
.toggle.on{background:var(--good);}
.toggle::after{content:"";position:absolute;top:3px;left:3px;width:28px;height:28px;border-radius:50%;background:#fff;transition:left .2s;box-shadow:0 2px 4px rgba(0,0,0,.2);}
.toggle.on::after{left:29px;}

/* 关卡完成结算 */
.result-emoji{font-size:84px;text-align:center;}
.stars{font-size:40px;text-align:center;letter-spacing:6px;margin:6px 0;}
.word-recap{background:var(--white);border-radius:16px;box-shadow:var(--shadow);padding:12px 14px;margin-top:8px;}

/* 提示条 */
.toast{position:fixed;left:50%;bottom:26px;transform:translateX(-50%);background:rgba(74,66,62,.94);color:#fff;padding:12px 20px;border-radius:999px;font-size:14px;z-index:50;opacity:0;transition:opacity .25s;pointer-events:none;}
.toast.show{opacity:1;}

/* 大字卡降级（无 emoji 时） */
.letter-card{width:96px;height:96px;border-radius:20px;background:linear-gradient(135deg,var(--yellow),var(--coral));display:flex;align-items:center;justify-content:center;font-family:var(--font-en);font-weight:700;font-size:52px;color:#fff;box-shadow:var(--shadow);}

/* 入场动画 */
.fade-in{animation:fadeIn .25s ease;}
@keyframes fadeIn{from{opacity:0;transform:translateY(8px);}to{opacity:1;transform:none;}}
.hidden{display:none !important;}

/* 场景横幅图（开场故事） */
.scene-hero{width:100%;height:210px;object-fit:cover;object-position:center 40%;border-radius:16px;display:block;box-shadow:var(--shadow);margin-bottom:12px;}

/* 角色图（holipix 全身图） */
.char-img,.intro-char{width:96px;height:128px;object-fit:contain;display:flex;align-items:center;justify-content:center;font-size:60px;margin:0 auto;}
.intro-char{width:120px;height:150px;font-size:80px;}
.avatar-box{width:46px;height:46px;border-radius:50%;overflow:hidden;background:#fff;box-shadow:0 2px 8px rgba(120,90,50,.18);flex:0 0 46px;}
.avatar-round{width:100%;height:100%;object-fit:cover;object-position:top;}