*{margin:0;padding:0;box-sizing:border-box}
:root{
  --bg:#F2F2F7;--surface:#FFFFFF;--surface2:#F2F2F7;--surface3:#E5E5EA;
  --text:#1C1C1E;--text2:#3C3C43;--text3:#8E8E93;
  --blue:#007AFF;--blue-bg:rgba(0,122,255,.08);--blue-bd:rgba(0,122,255,.2);
  --green:#34C759;--green-bg:rgba(52,199,89,.1);--green-bd:rgba(52,199,89,.25);
  --red:#FF3B30;--red-bg:rgba(255,59,48,.1);--red-bd:rgba(255,59,48,.25);
  --orange:#FF9500;--orange-bg:rgba(255,149,0,.1);--orange-bd:rgba(255,149,0,.25);
  --purple:#AF52DE;--purple-bg:rgba(175,82,222,.1);--purple-bd:rgba(175,82,222,.25);
  --radius:20px;--radius-sm:12px;
  --shadow:0 1px 2px rgba(0,0,0,.04),0 2px 8px rgba(0,0,0,.06);
  --shadow-lg:0 8px 24px rgba(0,0,0,.12);
  --font:'Plus Jakarta Sans',-apple-system,BlinkMacSystemFont,'SF Pro Display','Helvetica Neue',Roboto,sans-serif;
  --display:'Playfair Display',Georgia,'Times New Roman',serif;
  --pb:76px;
}
html{-webkit-text-size-adjust:100%}
body{font-family:var(--font);background:var(--bg);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-rendering:optimizeLegibility;color:var(--text);line-height:1.6;min-height:100vh;padding-bottom:var(--pb)}
#app{max-width:680px;margin:0 auto;padding:0 16px 40px}
button{font-family:inherit;cursor:pointer}
input,select{font-family:inherit;font-size:.9rem}

/* NOTIF */
.notif{position:fixed;top:16px;left:50%;transform:translateX(-50%) translateY(-80px);background:#18181b;color:#fff;border-radius:14px;padding:12px 18px;display:flex;align-items:center;gap:12px;z-index:999;box-shadow:0 10px 30px rgba(0,0,0,.25);transition:transform .35s cubic-bezier(.2,.8,.3,1);max-width:90vw}
.notif.show{transform:translateX(-50%) translateY(0)}
.notif-i{font-size:1.4rem}
.notif-t{font-size:.85rem;font-weight:700}
.notif-d{font-size:.7rem;color:#d4d4d8;text-transform:capitalize}

/* HEADER */
.hdr{display:flex;align-items:center;justify-content:space-between;padding:22px 0 16px}
.hdr h1{font-family:var(--display);font-size:1.65rem;font-weight:700;letter-spacing:-.02em}
.hdr p{font-size:.78rem;color:var(--text3);margin-top:2px}
.hdr-pills{display:flex;gap:6px}
.pill{font-size:.68rem;font-weight:700;padding:4px 10px;border-radius:20px}
.pill.xp{background:var(--orange-bg);color:var(--orange);border:1px solid var(--orange-bd)}
.pill.sk{background:var(--green-bg);color:var(--green);border:1px solid var(--green-bd)}

/* HERO CARD */
.hero-card{background:linear-gradient(135deg,#007AFF,#5856D6);border-radius:var(--radius);padding:28px 24px;color:#fff;text-align:center;margin-bottom:16px;cursor:pointer;box-shadow:var(--shadow-lg)}
.hero-card h2{font-size:.78rem;font-weight:600;text-transform:uppercase;letter-spacing:.12em;opacity:.85;margin-bottom:10px}
.hc-emoji{font-size:2rem;margin-bottom:4px}
.hw{font-size:1.9rem;font-weight:700;letter-spacing:-.02em}
.hm{font-size:1rem;opacity:.9;margin-top:4px}
.hs{font-size:.7rem;opacity:.7;margin-top:10px;text-transform:uppercase;letter-spacing:.1em}

/* STATS */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-bottom:16px}
.stat{background:var(--surface);border-radius:14px;padding:14px 8px;text-align:center;box-shadow:var(--shadow)}
.stat .n{font-size:1.15rem;font-weight:800;color:var(--text)}
.stat .l{font-size:.62rem;color:var(--text3);margin-top:2px;text-transform:uppercase;letter-spacing:.05em}

/* QUICK ACTIONS */
.qa-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;margin-bottom:22px}
.qa-card{background:var(--surface);border-radius:14px;padding:16px;box-shadow:var(--shadow);cursor:pointer;transition:transform .15s}
.qa-card:active{transform:scale(.97)}
.qa-icon{font-size:1.5rem;margin-bottom:6px}
.qa-title{font-size:.85rem;font-weight:700}
.qa-desc{font-size:.7rem;color:var(--text3);margin-top:2px}

/* SECTION */
.sec-t{font-family:var(--display);font-size:1.15rem;font-weight:800;margin:20px 0 12px;letter-spacing:-.01em}

/* STORY LIST */
.story-list{display:flex;flex-direction:column;gap:10px}
.story-item{display:flex;align-items:center;gap:12px;background:var(--surface);border-radius:14px;padding:14px;box-shadow:var(--shadow);cursor:pointer;transition:transform .15s}
.story-item:active{transform:scale(.98)}
.si-emoji{font-size:2rem;flex-shrink:0;width:48px;height:48px;display:flex;align-items:center;justify-content:center;background:var(--surface2);border-radius:12px}
.si-body{flex:1;min-width:0}
.si-title{font-size:.92rem;font-weight:700;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.si-meta{display:flex;align-items:center;gap:8px;margin-top:4px;font-size:.7rem;color:var(--text3)}
.si-badge{font-size:.6rem;font-weight:700;padding:2px 8px;border-radius:20px;text-transform:uppercase;letter-spacing:.04em}
.si-badge.B{background:var(--green-bg);color:var(--green)}
.si-badge.I{background:var(--orange-bg);color:var(--orange)}
.si-badge.A{background:var(--purple-bg);color:var(--purple)}
.si-done{color:var(--green);font-weight:700}
.si-bm{background:none;border:none;font-size:1.2rem;color:var(--text3);padding:4px;flex-shrink:0}
.si-bm.on{color:var(--orange)}
.si-arrow{color:var(--text3);font-size:1.3rem;flex-shrink:0}

/* STORY VIEW */
.back-btn{background:var(--surface2);border:none;border-radius:10px;padding:8px 14px;font-size:.8rem;font-weight:600;color:var(--text2);margin:16px 0 8px}
.sv-tag{display:inline-block;font-size:.62rem;font-weight:700;padding:3px 10px;border-radius:20px;text-transform:uppercase;letter-spacing:.05em;margin:4px 0 8px}
.sv-tag.B{background:var(--green-bg);color:var(--green)}
.sv-tag.I{background:var(--orange-bg);color:var(--orange)}
.sv-tag.A{background:var(--purple-bg);color:var(--purple)}
.sv-title{font-family:var(--display);font-size:1.6rem;font-weight:700;letter-spacing:-.02em;line-height:1.25}
.sv-meta{display:flex;gap:12px;flex-wrap:wrap;font-size:.75rem;color:var(--text3);margin:8px 0 14px}
.sv-actions{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:20px}
.btn{border:none;border-radius:12px;padding:10px 18px;font-size:.82rem;font-weight:600;transition:transform .15s}
.btn:active{transform:scale(.96)}
.btn-g{background:var(--green-bg);color:var(--green);border:1px solid var(--green-bd)}
.btn-o{background:var(--surface);color:var(--text2);border:1px solid var(--surface3)}
.btn-p{background:var(--blue);color:#fff}
.btn-tts{background:var(--blue);color:#fff;border:none;border-radius:10px;padding:9px 16px;font-size:.8rem;font-weight:600}
.btn-tts.on{background:var(--red)}

/* BLOCK */
.blk{background:var(--surface);border-radius:14px;padding:18px;margin-bottom:16px;box-shadow:var(--shadow)}
.blk-h{font-size:.78rem;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--text2);margin-bottom:12px}
.vl{display:flex;flex-wrap:wrap;gap:8px}
.vp{background:var(--surface2);border-radius:10px;padding:8px 12px;cursor:pointer;transition:background .15s}
.vp:active{background:var(--blue-bg)}
.ve{font-size:.85rem;font-weight:700;color:var(--blue)}
.vi{font-size:.72rem;color:var(--text3);margin-top:1px}
.para{margin-bottom:14px}
.para .en{font-size:.95rem;font-weight:500;line-height:1.7}
.para .id{font-size:.82rem;color:var(--text3);margin-top:4px;line-height:1.6}
.para.lit{background:var(--blue-bg);border-left:3px solid var(--blue);padding:8px 10px;border-radius:8px}

/* QUIZ */
.qc{margin-bottom:14px}
.qq{font-size:.88rem;font-weight:600;margin-bottom:8px}
.qo{background:var(--surface2);border-radius:10px;padding:10px 14px;margin-bottom:6px;font-size:.85rem;cursor:pointer;transition:background .15s}
.qo:active{background:var(--blue-bg)}
.qo.off{cursor:default;opacity:.75}
.qo.ok{background:var(--green-bg);color:var(--green);font-weight:600;border:1px solid var(--green-bd)}
.qo.no{background:var(--red-bg);color:var(--red);border:1px solid var(--red-bd)}
.qh{display:none;font-size:.78rem;margin-top:8px;padding:8px 12px;border-radius:8px}
.qh.show{display:block}
.qh.g{background:var(--green-bg);color:var(--green)}
.qh.r{background:var(--red-bg);color:var(--red)}

/* NAVIGATION */
.nxt{display:flex;justify-content:space-between;gap:8px;margin-top:20px}

/* FLASHCARDS */
.fc-box{background:var(--surface);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow)}
.fc-count{text-align:center;font-size:.75rem;color:var(--text3);margin-bottom:12px}
.fc-flip{perspective:1000px;cursor:pointer;margin-bottom:14px}
.fc-face{backface-visibility:hidden;transition:transform .5s;border-radius:14px;padding:40px 20px;text-align:center;min-height:180px;display:flex;flex-direction:column;align-items:center;justify-content:center}
.fc-front{background:linear-gradient(135deg,#007AFF,#5856D6);color:#fff}
.fc-back{background:var(--surface2);color:var(--text);transform:rotateY(180deg)}
.fc-flip.flipped .fc-front{transform:rotateY(180deg)}
.fc-flip.flipped .fc-back{transform:rotateY(0)}
.fc-word{font-family:var(--display);font-size:1.8rem;font-weight:800;letter-spacing:-.02em}
.fc-hint{font-size:.7rem;opacity:.75;margin-top:10px;text-transform:uppercase;letter-spacing:.1em}
.fc-meaning{font-size:1.2rem;font-weight:700}
.fc-nav{display:flex;justify-content:space-between;gap:8px}

/* STATS GRID */
.sg{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;margin-bottom:16px}
.sc{background:var(--surface);border-radius:14px;padding:16px;text-align:center;box-shadow:var(--shadow)}
.sc.big{grid-column:1/-1}
.sc-n{font-size:1.3rem;font-weight:800}
.sc-l{font-size:.68rem;color:var(--text3);margin-top:2px;text-transform:uppercase;letter-spacing:.05em}
.pr{display:flex;justify-content:space-between;align-items:center;padding:10px 0;border-bottom:1px solid var(--surface3);cursor:pointer;font-size:.82rem}
.pr:last-child{border-bottom:none}
.pr-t{font-weight:600}
.pr-s{font-size:.7rem;color:var(--text3)}
.pr-s.d{color:var(--green);font-weight:700}

/* BADGES */
.bg-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.bg-card{background:var(--surface2);border-radius:12px;padding:14px 8px;text-align:center;opacity:.6}
.bg-card.on{opacity:1;background:var(--surface);box-shadow:var(--shadow);border:1px solid var(--surface3)}
.bg-e{font-size:1.6rem;margin-bottom:6px}
.bg-n{font-size:.72rem;font-weight:700}
.bg-d{font-size:.6rem;color:var(--text3);margin-top:2px}
.bg-ok{font-size:.6rem;color:var(--green);font-weight:700;margin-top:4px}

/* SETTINGS */
.srow{display:flex;align-items:center;justify-content:space-between;padding:12px 0;border-bottom:1px solid var(--surface3);gap:10px}
.srow:last-child{border-bottom:none}
.srow-l{font-size:.85rem;font-weight:600}
.srow-d{font-size:.7rem;color:var(--text3);margin-top:1px}
.srow input[type=checkbox]{width:42px;height:24px;accent-color:var(--blue);flex-shrink:0}
.srow select{padding:6px 10px;border-radius:8px;border:1px solid var(--surface3);background:var(--surface);flex-shrink:0}

/* BOTTOM NAV */
#bnav{position:fixed;bottom:0;left:0;right:0;background:rgba(255,255,255,.82);-webkit-backdrop-filter:blur(20px) saturate(1.8);backdrop-filter:blur(20px) saturate(1.8);border-top:1px solid var(--surface3);display:flex;justify-content:space-around;padding:6px 0 calc(6px + env(safe-area-inset-bottom));z-index:100}
.bnav-item{display:flex;flex-direction:column;align-items:center;gap:2px;padding:6px 12px;border-radius:12px;cursor:pointer;color:var(--text3);font-size:.6rem;font-weight:600;position:relative;background:none;border:none}
.bnav-item.on{color:var(--blue)}
.bnav-icon{font-size:1.3rem;line-height:1}
.bnav-streak{position:absolute;top:0;right:4px;background:var(--orange);color:#fff;font-size:.55rem;font-weight:700;border-radius:10px;padding:1px 5px}

/* RESPONSIVE */
@media(min-width:768px){
  #app{padding:0 24px 48px}
  .hdr{padding:32px 0 20px}
  .hdr h1{font-size:2rem}
  .stats{grid-template-columns:repeat(4,1fr)}
  .qa-grid{grid-template-columns:repeat(4,1fr)}
  .story-item{padding:16px}
  .si-emoji{width:56px;height:56px;font-size:2.2rem}
  .sv-title{font-size:1.9rem}
  .para .en{font-size:1.02rem}
  .sg{grid-template-columns:repeat(4,1fr)}
  .sc.big{grid-column:1/-1}
  .bg-grid{grid-template-columns:repeat(4,1fr)}
}

/* TTS BAR */
#ttsBar{position:fixed;bottom:70px;left:50%;transform:translateX(-50%) translateY(120px);background:#18181b;color:#fff;border-radius:14px;padding:12px 18px;width:calc(100% - 32px);max-width:640px;z-index:99;box-shadow:0 10px 30px rgba(0,0,0,.3);transition:transform .35s cubic-bezier(.2,.8,.3,1)}
#ttsBar.on{transform:translateX(-50%) translateY(0)}
#ttsText{font-size:.85rem;font-weight:500;line-height:1.5}
#ttsPB{height:3px;background:var(--blue);border-radius:2px;margin-top:10px;transition:width .3s}

/* ===== SPLASH SCREEN ===== */
#splash{position:fixed;inset:0;z-index:1000;background:linear-gradient(160deg,#007AFF 0%,#5856D6 55%,#AF52DE 100%);display:flex;align-items:center;justify-content:center;transition:opacity .5s ease,visibility .5s}
#splash.hide{opacity:0;visibility:hidden;pointer-events:none}
.splash-inner{text-align:center;color:#fff}
.splash-logo{font-size:4rem;animation:popIn .6s cubic-bezier(.2,.8,.3,1.2) both}
.splash-title{font-family:var(--display);font-size:2rem;font-weight:800;margin-top:12px;animation:fadeUp .6s .15s both;letter-spacing:-.02em}
.splash-sub{font-size:.9rem;opacity:.85;margin-top:4px;animation:fadeUp .6s .3s both}
.splash-bar{width:160px;height:4px;background:rgba(255,255,255,.25);border-radius:4px;margin:28px auto 0;overflow:hidden}
.splash-fill{height:100%;width:0;background:#fff;border-radius:4px;animation:loadBar 1.2s .4s cubic-bezier(.4,0,.2,1) forwards}
@keyframes popIn{0%{transform:scale(.4);opacity:0}100%{transform:scale(1);opacity:1}}
@keyframes fadeUp{0%{transform:translateY(16px);opacity:0}100%{transform:translateY(0);opacity:1}}
@keyframes loadBar{0%{width:0}100%{width:100%}}

/* ===== ONBOARDING ===== */
#onboard{position:fixed;inset:0;z-index:999;background:rgba(20,20,30,.5);-webkit-backdrop-filter:blur(24px);backdrop-filter:blur(24px);display:flex;align-items:center;justify-content:center;padding:24px;opacity:0;visibility:hidden;transition:opacity .4s}
#onboard.show{opacity:1;visibility:visible}
.ob-card{background:rgba(255,255,255,.96);border-radius:28px;padding:40px 28px;text-align:center;max-width:340px;width:100%;box-shadow:0 24px 80px rgba(0,0,0,.35);transform:translateY(24px) scale(.95);animation:obIn .5s .1s cubic-bezier(.2,.8,.3,1.1) forwards}
@keyframes obIn{to{transform:translateY(0) scale(1)}}
.ob-emoji{font-size:3.2rem;animation:popIn .6s .2s both}
.ob-title{font-family:var(--display);font-size:1.6rem;font-weight:800;margin-top:14px;letter-spacing:-.02em}
.ob-desc{font-size:.9rem;color:var(--text2);line-height:1.7;margin-top:10px}
.ob-btn{background:linear-gradient(135deg,#007AFF,#5856D6);color:#fff;border:none;border-radius:14px;padding:14px 36px;font-size:.95rem;font-weight:700;margin-top:24px;cursor:pointer;box-shadow:0 8px 24px rgba(0,122,255,.35);transition:transform .15s}
.ob-btn:active{transform:scale(.96)}

/* ===== PREMIUM POLISH ===== */
.hdr h1{background:linear-gradient(135deg,#1C1C1E,#3C3C43);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero-card{position:relative;overflow:hidden}
.hero-card::before{content:'';position:absolute;inset:0;background:radial-gradient(circle at 80% -20%,rgba(255,255,255,.25),transparent 50%);pointer-events:none}
.story-item{transition:transform .2s,box-shadow .2s}
.story-item:active{transform:scale(.97)}
.story-item:hover{box-shadow:var(--shadow-lg)}
.qa-card{transition:transform .2s,box-shadow .2s}
.qa-card:active{transform:scale(.95)}
.fc-flip{transform-style:preserve-3d}
.stat{transition:transform .2s}
.stat:active{transform:scale(.95)}
.si-emoji{transition:transform .2s}
.story-item:hover .si-emoji{transform:scale(1.1) rotate(-5deg)}
.blk{position:relative;overflow:hidden}
.blk::after{content:'';position:absolute;top:0;right:0;width:80px;height:80px;background:radial-gradient(circle at top right,rgba(0,122,255,.05),transparent 70%);pointer-events:none;border-radius:0 0 0 80px}
.btn{transition:transform .15s,box-shadow .15s}
.btn:active{transform:scale(.95)}
.qo{transition:background .15s,transform .15s}
.qo:active{transform:scale(.98)}
.vp{transition:transform .15s,background .15s}
.vp:active{transform:scale(.95)}

/* ===== GOAL CARD ===== */
.goal-card{display:flex;align-items:center;gap:16px;background:var(--surface);border-radius:var(--radius);padding:16px;margin-bottom:12px;box-shadow:var(--shadow)}
.goal-ring{width:56px;height:56px;border-radius:50%;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.goal-inner{width:44px;height:44px;background:var(--surface);border-radius:50%;display:flex;align-items:center;justify-content:center}
.goal-pct{font-size:.75rem;font-weight:800;color:var(--blue)}
.goal-info{flex:1}
.goal-t{font-size:.78rem;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--text3)}
.goal-d{font-size:.85rem;font-weight:600;margin-top:2px}
.goal-bar{height:6px;background:var(--surface3);border-radius:3px;margin-top:8px;overflow:hidden}
.goal-bar-fill{height:100%;background:linear-gradient(90deg,#007AFF,#5856D6);border-radius:3px;transition:width .4s}

/* ===== SEARCH ===== */
.search-box{display:flex;align-items:center;gap:10px;background:var(--surface);border-radius:14px;padding:12px 16px;margin-bottom:14px;box-shadow:var(--shadow);cursor:pointer;color:var(--text3);font-size:.85rem}
.search-box:active{transform:scale(.98)}
.search-icon{font-size:1.1rem;flex-shrink:0}
.search-ph{flex:1}
.search-input{width:100%;padding:14px 16px;border-radius:14px;border:2px solid var(--surface3);background:var(--surface);font-size:1rem;font-weight:500;color:var(--text);outline:none;transition:border-color .2s}
.search-input:focus{border-color:var(--blue)}

/* ===== DARK MODE ===== */
[data-theme="dark"]{
  --bg:#0B0B12;--surface:#16161E;--surface2:#1E1E28;--surface3:#2C2C38;
  --text:#F2F2F7;--text2:#A1A1B5;--text3:#6B6B80;
  --blue:#0A84FF;--blue-bg:rgba(10,132,255,.12);--blue-bd:rgba(10,132,255,.3);
  --green:#30D158;--green-bg:rgba(48,209,88,.12);--green-bd:rgba(48,209,88,.3);
  --red:#FF453A;--red-bg:rgba(255,69,58,.12);--red-bd:rgba(255,69,58,.3);
  --orange:#FF9F0A;--orange-bg:rgba(255,159,10,.12);--orange-bd:rgba(255,159,10,.3);
  --purple:#BF5AF2;--purple-bg:rgba(191,90,242,.12);--purple-bd:rgba(191,90,242,.3);
  --shadow:0 1px 2px rgba(0,0,0,.3),0 2px 8px rgba(0,0,0,.4);
  --shadow-lg:0 8px 24px rgba(0,0,0,.5);
}
[data-theme="dark"] .hdr h1{background:linear-gradient(135deg,#F2F2F7,#A1A1B5);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
[data-theme="dark"] .goal-inner{background:var(--surface)}
[data-theme="dark"] #bnav{background:rgba(22,22,30,.85)}
[data-theme="dark"] .fc-front{background:linear-gradient(135deg,#0A84FF,#5E5CE6)}
[data-theme="dark"] .hero-card{background:linear-gradient(135deg,#0A84FF,#5E5CE6)}
[data-theme="dark"] .ob-card{background:rgba(28,28,40,.96);color:var(--text)}
[data-theme="dark"] .ob-btn{background:linear-gradient(135deg,#0A84FF,#5E5CE6)}
[data-theme="dark"] .goal-bar-fill{background:linear-gradient(90deg,#0A84FF,#5E5CE6)}
[data-theme="dark"] .btn-p{background:var(--blue)}
[data-theme="dark"] .btn-tts{background:var(--blue)}
[data-theme="dark"] .story-item:hover{box-shadow:0 4px 16px rgba(0,0,0,.6)}

/* ===== TYPOGRAPHY POLISH ===== */
.para .en{line-height:1.9;letter-spacing:.01em}
.para .id{line-height:1.8}
.blk p{line-height:1.9}
.sv-title{line-height:1.3}
.qq{line-height:1.5}
.goal-d{letter-spacing:.01em}
@media(max-width:400px){
  .hdr h1{font-size:1.45rem}
  .hw{font-size:1.6rem}
  .stat .n{font-size:1rem}
  .qa-card{padding:14px 12px}
  .sv-title{font-size:1.4rem}
}

/* ===== READING PROGRESS BAR ===== */
#readProg{position:fixed;top:0;left:0;height:3px;background:linear-gradient(90deg,#007AFF,#AF52DE);z-index:1000;width:0;transition:width .1s linear}
[data-theme="dark"] #readProg{background:linear-gradient(90deg,#0A84FF,#BF5AF2)}

/* ===== FLOAT BUTTONS ===== */
#topBtn{position:fixed;bottom:84px;right:16px;width:44px;height:44px;border-radius:50%;background:rgba(255,255,255,.9);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);box-shadow:0 4px 16px rgba(0,0,0,.2);display:flex;align-items:center;justify-content:center;font-size:1.2rem;border:1px solid var(--surface3);cursor:pointer;opacity:0;visibility:hidden;transition:opacity .3s,visibility .3s;z-index:99}
#topBtn.show{opacity:1;visibility:visible}
[data-theme="dark"] #topBtn{background:rgba(30,30,40,.9);border-color:var(--surface3)}

/* ===== WORD TOOLTIP ===== */
#wordTip{position:fixed;z-index:1001;background:#1C1C1E;color:#fff;border-radius:12px;padding:10px 14px;font-size:.8rem;max-width:240px;box-shadow:0 8px 30px rgba(0,0,0,.4);opacity:0;visibility:hidden;transition:opacity .2s,visibility .2s;pointer-events:none}
#wordTip.show{opacity:1;visibility:visible}
#wordTip .wt-en{font-weight:700;font-size:.9rem;margin-bottom:2px}
#wordTip .wt-id{color:#B0B0C0;font-size:.78rem}
#wordTip .wt-tts{display:inline-block;margin-top:6px;background:rgba(255,255,255,.15);border:1px solid rgba(255,255,255,.25);color:#fff;border-radius:8px;padding:3px 10px;font-size:.7rem;cursor:pointer}

/* ===== FONT SIZE CONTROLS ===== */
.fs-row{display:flex;align-items:center;gap:10px;justify-content:center;padding:8px 0}
.fs-btn{width:40px;height:40px;border-radius:12px;background:var(--surface2);border:1px solid var(--surface3);font-size:1rem;font-weight:700;cursor:pointer;color:var(--text);display:flex;align-items:center;justify-content:center}
.fs-btn:active{transform:scale(.92)}
.fs-val{font-size:.85rem;font-weight:600;color:var(--text2);min-width:60px;text-align:center}

/* ===== RANK CARD ===== */
.rank-card{display:flex;align-items:center;gap:14px;background:linear-gradient(135deg,rgba(0,122,255,.08),rgba(175,82,222,.08));border:1px solid var(--blue-bd);border-radius:var(--radius);padding:14px 16px;margin-bottom:12px}
.rank-icon{font-size:2rem;flex-shrink:0;animation:popIn .5s both}
.rank-info{flex:1}
.rank-name{font-size:1rem;font-weight:800;letter-spacing:-.01em}
.rank-bar{height:6px;background:var(--surface3);border-radius:3px;overflow:hidden;margin-top:6px}
.rank-fill{height:100%;background:linear-gradient(90deg,#007AFF,#AF52DE);border-radius:3px;transition:width .5s}
.rank-next{font-size:.68rem;color:var(--text3);margin-top:4px}

/* ===== QUOTE CARD ===== */
.quote-card{position:relative;background:var(--surface);border-radius:var(--radius);padding:18px 20px;margin-bottom:16px;box-shadow:var(--shadow)}
.quote-mark{position:absolute;top:4px;left:14px;font-size:2.2rem;font-family:Georgia,serif;color:var(--blue);opacity:.4;line-height:1}
.quote-card p{font-size:.82rem;font-style:italic;color:var(--text2);line-height:1.7;padding-left:12px}

/* ===== RESUME CARD ===== */
.resume-card{display:flex;align-items:center;gap:12px;background:linear-gradient(135deg,#007AFF,#5856D6);border-radius:14px;padding:14px 16px;margin-bottom:14px;color:#fff;cursor:pointer;box-shadow:0 6px 20px rgba(0,122,255,.3)}
.resume-card:active{transform:scale(.97)}
.resume-icon{font-size:1.5rem;flex-shrink:0}
.resume-body{flex:1}
.resume-t{font-size:.68rem;text-transform:uppercase;letter-spacing:.1em;opacity:.8}
.resume-s{font-size:.9rem;font-weight:700;margin-top:2px}
.resume-card .si-arrow{color:rgba(255,255,255,.8)}

/* ===== CONFETTI ===== */
.confetti{position:fixed;top:-20px;z-index:2000;pointer-events:none;border-radius:2px;animation:confettiFall linear forwards}
@keyframes confettiFall{
  0%{transform:translateY(0) rotate(0);opacity:1}
  100%{transform:translateY(110vh) rotate(720deg);opacity:.6}
}

/* ===== PAGE TRANSITION ===== */
#app > *{animation:pageIn .35s cubic-bezier(.2,.8,.3,1) both}
@keyframes pageIn{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:translateY(0)}}

/* ===== HEATMAP ===== */
.heatmap{display:flex;justify-content:space-between;gap:6px}
.hm-day{display:flex;flex-direction:column;align-items:center;gap:6px;flex:1}
.hm-dot{width:28px;height:28px;border-radius:8px;background:var(--surface3)}
.hm-dot.l1{background:rgba(0,122,255,.35)}
.hm-dot.l2{background:rgba(0,122,255,.65)}
.hm-dot.l3{background:var(--blue)}
.hm-lbl{font-size:.55rem;color:var(--text3);text-transform:uppercase}

/* ===== LEVEL RINGS ===== */
.lvl-row{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}
.lvl-ring-wrap{text-align:center}
.lvl-ring{width:52px;height:52px;border-radius:50%;display:flex;align-items:center;justify-content:center;margin:0 auto}
.lvl-inner{width:40px;height:40px;background:var(--surface);border-radius:50%;display:flex;align-items:center;justify-content:center}
.lvl-pct{font-size:.68rem;font-weight:800;color:var(--blue)}
.lvl-name{font-size:.62rem;font-weight:600;margin-top:6px;color:var(--text2)}
.lvl-done{font-size:.6rem;color:var(--text3);margin-top:2px}

/* ===== CHART ===== */
.chart{display:flex;flex-direction:column;gap:8px}
.chart-row{display:flex;align-items:center;gap:8px}
.chart-lbl{font-size:.9rem;flex-shrink:0;width:22px;text-align:center}
.chart-bar{flex:1;height:14px;background:var(--surface2);border-radius:7px;overflow:hidden}
.chart-fill{height:100%;border-radius:7px;transition:width .5s}
.chart-fill.g{background:var(--green)}
.chart-fill.y{background:var(--orange)}
.chart-fill.r{background:var(--red)}
.chart-val{font-size:.68rem;font-weight:700;color:var(--text2);flex-shrink:0;width:32px;text-align:right}

/* ===== FLASHCARD SWIPE ===== */
.fc-flip{user-select:none;-webkit-user-select:none}
.fc-box{position:relative}

/* ===== GRAMMAR TIP ===== */
.tip-card{display:flex;gap:12px;background:linear-gradient(135deg,rgba(255,149,0,.1),rgba(255,59,48,.06));border:1px solid var(--orange-bd);border-radius:14px;padding:14px 16px;margin-bottom:16px}
.tip-icon{font-size:1.4rem;flex-shrink:0}
.tip-body{flex:1}
.tip-t{font-size:.68rem;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--orange);margin-bottom:4px}
.tip-d{font-size:.85rem;color:var(--text2);line-height:1.6}