:root{
  --bg:#f7f7fb; --card:#fff; --text:#22232a; --muted:#777985; --line:#ececf2;
  --purple:#8b5cf6; --purple-2:#a66cf7; --purple-soft:#f1eaff; --shadow:0 12px 36px rgba(38,34,54,.08);
  --radius:24px;
}
*{box-sizing:border-box}
html{background:var(--bg);scroll-behavior:smooth}
body{margin:0;font-family:Inter,Pretendard,"Noto Sans KR",system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased}
button,textarea,select,input{font:inherit}
button{cursor:pointer}
.app-shell{max-width:860px;margin:0 auto;min-height:100vh;padding-bottom:150px}
.topbar{height:82px;display:flex;align-items:center;justify-content:space-between;padding:0 24px;position:sticky;top:0;z-index:10;background:rgba(247,247,251,.86);backdrop-filter:blur(16px);border-bottom:1px solid rgba(230,230,238,.7)}
.brand-wrap{display:flex;align-items:center;gap:12px}.brand-mark{width:42px;height:42px;border-radius:14px;display:grid;place-items:center;color:#fff;font-weight:900;background:linear-gradient(135deg,var(--purple),#b86bff);box-shadow:0 8px 20px rgba(139,92,246,.24)}
.brand{font-weight:850;font-size:18px;letter-spacing:-.3px}.brand-sub{font-size:12px;color:#a0a1aa;margin-top:2px}
.icon-btn{border:0;background:#fff;width:42px;height:42px;border-radius:14px;box-shadow:0 5px 16px rgba(0,0,0,.05);color:#666}
main{padding:24px}.hero-card{background:radial-gradient(circle at 85% 0%,rgba(185,127,255,.18),transparent 32%),linear-gradient(180deg,#fff,#fcfaff);border:1px solid #eeeaf8;border-radius:32px;padding:32px;box-shadow:var(--shadow)}
.eyebrow,.section-kicker{font-size:12px;font-weight:800;letter-spacing:.08em;color:var(--purple);text-transform:uppercase}.hero-card h1{font-size:38px;line-height:1.16;letter-spacing:-1.6px;margin:10px 0 12px}.hero-card h1 span{color:var(--purple)}.hero-card>p{margin:0 0 24px;color:var(--muted);line-height:1.65;font-size:15px}
.composer{background:#fff;border:1px solid #e9e5f2;border-radius:24px;padding:16px;box-shadow:0 8px 24px rgba(62,43,91,.06)}
textarea{width:100%;border:0;outline:0;resize:vertical;min-height:110px;padding:10px 8px;color:#292833;font-size:18px;line-height:1.55;background:transparent}textarea::placeholder{color:#b7b7bf}
.composer-actions{display:flex;justify-content:space-between;gap:12px;align-items:center;border-top:1px solid #f0edf5;padding-top:14px}.mic-group{display:flex;gap:8px;align-items:center}.mic-btn{width:46px;height:46px;border:0;border-radius:16px;background:#f4f1f9;font-size:20px}.mic-btn.listening{background:#ffe8ee;animation:pulse 1s infinite}.mic-group select,.play-settings-row select,.field-label select{border:1px solid #e7e4ee;background:#fff;border-radius:12px;padding:10px 12px;color:#5f5f68}
.primary-btn{border:0;border-radius:16px;padding:13px 18px;background:linear-gradient(135deg,var(--purple),var(--purple-2));color:#fff;font-weight:800;display:inline-flex;align-items:center;justify-content:center;gap:8px;box-shadow:0 10px 24px rgba(139,92,246,.25)}.primary-btn:disabled{opacity:.55;cursor:not-allowed}.primary-btn.full{width:100%;margin-top:16px}.spark{font-size:18px}
.quick-chips{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px}.quick-chips button{border:1px solid #ebe7f2;background:#faf8fd;border-radius:999px;padding:8px 11px;color:#6e6878;font-size:12px}.quick-chips button:hover{border-color:#d7c7ff;color:var(--purple)}
.status-line{font-size:12px;color:#9998a2;text-align:center;margin-top:12px}.status-line.error{color:#c4455d}.status-line.success{color:#4c8a67}
.result-section,.library-section{margin-top:34px}.section-heading{display:flex;justify-content:space-between;align-items:end;gap:14px;margin:0 4px 14px}.section-heading h2{font-size:26px;letter-spacing:-.8px;margin:4px 0 0}.soft-btn{border:1px solid #e7e3ef;background:#fff;border-radius:14px;padding:10px 13px;color:#625f69;font-weight:700;box-shadow:0 5px 14px rgba(0,0,0,.035)}
.result-card{background:#fff;border:1px solid #ece9f2;border-radius:26px;box-shadow:var(--shadow);overflow:hidden}.result-main{padding:24px;background:linear-gradient(145deg,#fff 40%,#fbf6ff)}.result-title-row{display:flex;gap:14px;align-items:flex-start}.round-play{width:54px;height:54px;flex:0 0 54px;border:0;border-radius:50%;background:#f4f2f7;color:#4c4b53;font-size:19px}.result-main h3,.sentence-card h3{font-size:22px;line-height:1.4;margin:1px 0 6px;letter-spacing:-.35px}.kr{color:#74747c;line-height:1.55}.nuance{margin:14px 0 0 68px;padding:11px 13px;border-radius:14px;background:#f7f3ff;color:#716286;font-size:13px;line-height:1.55}.result-grid{padding:0 24px 24px;display:grid;grid-template-columns:1fr 1fr;gap:12px}.mini-card{border:1px solid #efedf3;border-radius:18px;padding:16px;background:#fff}.mini-label{font-size:11px;font-weight:800;color:#9a8aad;margin-bottom:7px}.mini-en{font-size:16px;font-weight:750;line-height:1.45}.mini-kr{font-size:13px;color:#808089;line-height:1.55;margin-top:4px}.mini-play{float:right;border:0;background:#f5f2f9;border-radius:10px;width:34px;height:34px}.dialog-card{grid-column:1/-1}.dialog-line{padding:9px 0;border-bottom:1px dashed #eeeaf1}.dialog-line:last-child{border-bottom:0}.dialog-role{display:inline-grid;place-items:center;width:24px;height:24px;border-radius:8px;background:#f0e8ff;color:var(--purple);font-weight:900;font-size:11px;margin-right:7px}
.library-heading{align-items:center}.count-badge{font-size:13px;background:#efe8ff;color:var(--purple);padding:4px 9px;border-radius:999px;vertical-align:4px}.heading-actions{display:flex;gap:7px}.play-panel{background:#fff;border:1px solid #eceaf1;border-radius:24px;padding:16px 18px;box-shadow:0 8px 26px rgba(0,0,0,.04);margin-bottom:16px}.play-panel-row{display:flex;justify-content:space-between;gap:12px;align-items:center}.all-play-btn{border:0;border-radius:16px;padding:13px 18px;background:linear-gradient(135deg,var(--purple),var(--purple-2));color:#fff;font-weight:800}.segment{display:flex;background:#f6f5f8;border-radius:14px;padding:3px}.segment button{border:0;background:transparent;padding:9px 12px;border-radius:11px;color:#81808a;font-weight:700}.segment button.active{background:#4e4e53;color:#fff}.play-settings-row{display:flex;flex-wrap:wrap;gap:10px 16px;margin-top:14px;align-items:center}.play-settings-row label{font-size:12px;color:#777780;display:flex;align-items:center;gap:6px}.play-settings-row select{padding:7px 8px;font-size:12px}.toggle-label input{accent-color:var(--purple)}.progress-track{height:5px;background:#f0edf4;border-radius:99px;overflow:hidden;margin-top:14px}.progress-fill{height:100%;width:0;background:linear-gradient(90deg,var(--purple),#b868ff);transition:width .2s}
.sentence-list{display:flex;flex-direction:column;gap:12px}.sentence-card{background:#fff;border:1px solid #ececf0;border-radius:24px;padding:20px;box-shadow:0 7px 24px rgba(0,0,0,.035);display:grid;grid-template-columns:56px 1fr auto;gap:14px;align-items:start}.sentence-card .round-play{width:50px;height:50px;flex-basis:50px}.sentence-meta{font-size:12px;color:#aaa6b2;margin-bottom:7px}.sentence-actions{display:flex;flex-direction:column;gap:7px}.sentence-actions button{border:0;background:#faf9fb;width:38px;height:38px;border-radius:12px;color:#8b8992}.sentence-actions button.fav{color:#f0aa34;background:#fff8e9}.play-count{display:inline-flex;margin-top:12px;border-radius:999px;padding:6px 10px;background:#f5efff;color:#8056c9;font-size:11px;font-weight:800}.hidden-language{filter:blur(7px);user-select:none}.empty-state{text-align:center;padding:45px 20px;color:#8b8993}.empty-icon{font-size:36px}.hidden{display:none!important}
.player-dock{position:fixed;left:50%;bottom:max(16px,env(safe-area-inset-bottom));transform:translateX(-50%);z-index:30;width:min(820px,calc(100% - 24px));background:rgba(255,255,255,.96);backdrop-filter:blur(18px);border:1px solid #e7e5eb;border-radius:24px;box-shadow:0 18px 50px rgba(37,30,51,.18);padding:16px 18px;display:flex;justify-content:space-between;align-items:center;gap:18px}.dock-text{min-width:0;display:flex;flex-direction:column}.dock-label{font-size:11px;color:var(--purple);font-weight:800}.dock-text strong{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-size:17px;margin:3px 0}.dock-text>span:last-child{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-size:12px;color:#7f7d85}.dock-controls{display:flex;align-items:center;gap:7px}.dock-controls button{border:0;background:#f4f2f6;border-radius:12px;width:40px;height:40px}.dock-controls .dock-play{background:var(--purple);color:#fff;width:48px;height:48px;border-radius:50%}
.settings-dialog{width:min(520px,calc(100% - 28px));border:0;border-radius:26px;padding:0;box-shadow:0 22px 80px rgba(0,0,0,.2)}.settings-dialog::backdrop{background:rgba(26,22,32,.35);backdrop-filter:blur(4px)}.settings-dialog form{padding:24px}.dialog-head{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:18px}.dialog-head h2{margin:3px 0;font-size:24px}.field-label{display:block;font-size:13px;color:#67666e;margin-top:14px}.field-label select{display:block;width:100%;margin-top:7px}.dialog-note{font-size:12px;line-height:1.6;color:#8d8a94;background:#f7f5f9;border-radius:14px;padding:12px;margin-top:16px}
.toast{position:fixed;top:92px;left:50%;transform:translateX(-50%);z-index:100;background:#29272e;color:#fff;padding:10px 15px;border-radius:999px;font-size:13px;box-shadow:0 10px 30px rgba(0,0,0,.2);animation:toastIn .18s ease}
@keyframes pulse{50%{transform:scale(1.07)}}@keyframes toastIn{from{opacity:0;transform:translate(-50%,-8px)}to{opacity:1;transform:translate(-50%,0)}}
@media(max-width:650px){.topbar{height:70px;padding:0 16px}.brand-sub{display:none}main{padding:14px}.hero-card{padding:22px 16px;border-radius:25px}.hero-card h1{font-size:31px}.composer{padding:13px}.composer-actions{align-items:stretch}.mic-group select{display:none}.primary-btn{flex:1}.result-grid{grid-template-columns:1fr;padding:0 16px 18px}.dialog-card{grid-column:auto}.result-main{padding:20px 16px}.nuance{margin-left:0}.section-heading{align-items:center}.section-heading h2{font-size:23px}.heading-actions .soft-btn:last-child{display:none}.play-panel-row{align-items:stretch;flex-direction:column}.segment{width:100%}.segment button{flex:1}.sentence-card{grid-template-columns:50px 1fr auto;padding:16px;gap:10px}.sentence-card h3{font-size:18px}.sentence-actions button{width:34px;height:34px}.player-dock{padding:13px;bottom:max(9px,env(safe-area-inset-bottom))}.dock-controls button:not(.dock-play){display:none}.dock-text strong{font-size:15px}.quick-chips{overflow-x:auto;flex-wrap:nowrap;padding-bottom:2px}.quick-chips button{white-space:nowrap}}

/* v3 hybrid additions */
.hero-topline{display:flex;justify-content:space-between;gap:16px;align-items:flex-start}.capability-pills{display:flex;gap:6px;flex-wrap:wrap;justify-content:flex-end}.cap-pill{font-size:11px;font-weight:800;color:#77737f;background:#f4f2f7;border:1px solid #ebe7f0;border-radius:999px;padding:6px 9px;white-space:nowrap}.cap-pill.ok{background:#eef9f1;border-color:#d8efdf;color:#4e8260}.cap-pill.bad{background:#fff1f2;border-color:#f7d8dc;color:#b64f62}.mode-switch{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin:22px auto 12px;max-width:650px;background:#f3f0f7;padding:5px;border-radius:18px}.mode-switch button{border:0;background:transparent;border-radius:14px;padding:11px 13px;color:#77727e;font-weight:850;display:flex;gap:7px;align-items:center;justify-content:center}.mode-switch button small{font-weight:650;color:#9a96a0}.mode-switch button.active{background:#fff;color:#504c57;box-shadow:0 5px 14px rgba(33,25,48,.08)}.mode-switch button.active small{color:#7d7787}.secondary-btn{border:1px solid #e4dfeb;background:#fff;border-radius:16px;padding:12px 15px;color:#6e6876;font-weight:800}.manual-panel{margin-top:16px;background:#fff;border:1px solid #e9e5ef;border-radius:20px;padding:18px;box-shadow:0 9px 26px rgba(0,0,0,.035)}.manual-head{display:flex;justify-content:space-between;align-items:flex-start;gap:12px;margin-bottom:12px}.manual-panel label{display:block;font-size:12px;color:#716d78;margin-top:10px}.manual-panel input{width:100%;box-sizing:border-box;margin-top:6px;border:1px solid #e5e1e9;background:#fbfafc;border-radius:13px;padding:12px 13px;font:inherit;color:#37343d}.manual-actions{display:flex;gap:8px;justify-content:flex-end;margin-top:14px}.basic-result-note{margin:0 24px 24px;border:1px dashed #ddd4eb;background:#faf8fd;border-radius:16px;padding:14px 16px;display:flex;gap:7px;flex-direction:column}.basic-result-note strong{color:#7055a0}.basic-result-note span{font-size:12px;line-height:1.55;color:#7e7986}.danger-soft{width:100%;margin-top:14px;border:1px solid #f0d7dc;background:#fff7f8;color:#b85c6c;border-radius:13px;padding:10px 12px;font-weight:750}
@media(max-width:650px){.hero-topline{display:block}.capability-pills{justify-content:flex-start;margin-top:10px}.mode-switch{grid-template-columns:1fr}.mode-switch button{justify-content:flex-start}.composer-actions{flex-wrap:wrap}.secondary-btn{flex:1}.manual-actions{flex-direction:column}.manual-actions>*{width:100%}.section-heading .heading-actions{flex-wrap:wrap;justify-content:flex-end}.section-heading .heading-actions #expandAiBtn{order:2;width:100%}}

/* v4 personal cloud sync */
.settings-dialog{max-height:min(90vh,820px);overflow:auto}
.sync-box{margin-top:18px;border:1px solid #e8e1f3;background:linear-gradient(180deg,#fbf9ff,#fff);border-radius:20px;padding:16px}
.sync-head{display:flex;justify-content:space-between;gap:12px;align-items:flex-start}
.sync-head h3{margin:3px 0 0;font-size:17px;letter-spacing:-.3px}
.sync-auto{display:flex;align-items:center;gap:6px;font-size:12px;color:#6f6978;font-weight:750;background:#fff;border:1px solid #e8e3ee;border-radius:999px;padding:7px 10px;white-space:nowrap}
.sync-auto input{accent-color:var(--purple)}
.sync-help{font-size:12px;line-height:1.55;color:#85818c;margin:10px 0 12px}
.sync-code-row{display:grid;grid-template-columns:1fr auto;gap:8px}
.sync-code-row input{width:100%;min-width:0;border:1px solid #e4dfeb;background:#fff;border-radius:13px;padding:11px 12px;color:#3c3942;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:12px;outline:none}
.sync-code-row input:focus{border-color:#c8b4f8;box-shadow:0 0 0 3px rgba(139,92,246,.08)}
.sync-main-actions{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:10px}
.sync-secondary-actions{display:flex;gap:7px;flex-wrap:wrap;margin-top:8px}
.sync-secondary-actions>*{flex:1;min-width:120px}
.danger-soft.compact{width:auto;margin-top:0;padding:10px 12px}
.sync-status{margin-top:10px;padding:10px 11px;background:#f6f3fa;border-radius:12px;color:#746d7d;font-size:11px;line-height:1.5}
button:disabled{cursor:not-allowed;opacity:.5}
@media(max-width:650px){
  .sync-main-actions{grid-template-columns:1fr}
  .sync-secondary-actions{display:grid;grid-template-columns:1fr 1fr}
  .sync-secondary-actions .compact{grid-column:1/-1;width:100%}
}

/* v5 study sets + review + shadowing */
.result-topic{display:inline-flex;align-items:center;margin-bottom:12px;padding:6px 10px;border-radius:999px;background:#f4effd;color:#7254a7;font-size:11px;font-weight:850}
.dialog-line{display:grid;grid-template-columns:32px 1fr;gap:8px;align-items:start}.dialog-line .mini-play{margin-top:1px}.dialog-line .mini-kr{margin-left:0!important}
.review-section{max-width:980px;margin:20px auto}.review-summary-card{display:flex;justify-content:space-between;align-items:center;gap:20px;background:linear-gradient(135deg,#fff,#faf7ff);border:1px solid #e9e1f5;border-radius:24px;padding:20px 22px;box-shadow:0 8px 28px rgba(70,50,100,.05)}.review-summary-card h2{margin:4px 0 6px;font-size:24px}.review-summary-card p{margin:0;color:#77727f;font-size:13px;line-height:1.55}.review-start-btn{white-space:nowrap;min-width:150px}.review-session{margin-top:12px;background:#fff;border:1px solid #e8e3ee;border-radius:24px;padding:18px;box-shadow:0 10px 30px rgba(0,0,0,.04)}.review-progress-row{display:flex;justify-content:space-between;align-items:center;color:#85808d;font-size:12px;font-weight:800}.review-card{padding:24px 10px 8px;text-align:center}.review-korean{font-size:24px;font-weight:850;line-height:1.45;letter-spacing:-.6px;margin:12px auto 18px;max-width:760px}.review-answer{margin:18px auto 14px;padding:18px;background:#faf8fd;border:1px solid #ece6f3;border-radius:18px;max-width:720px}.review-english{font-size:24px;font-weight:900;line-height:1.35;margin:8px 0 14px;color:#332e3b}.review-reveal{min-width:180px}.review-ratings{display:flex;justify-content:center;gap:8px;margin-top:16px}.review-ratings button{border:1px solid #e7e2eb;background:#fff;border-radius:14px;padding:11px 16px;font-weight:800;color:#5f5a66}.review-ratings button:hover{background:#f8f5fc}.library-view-row{display:flex;justify-content:flex-end;margin:-4px 0 10px}.play-main-actions{display:flex;gap:8px;align-items:center}.shadow-btn{border:1px solid #e2d9f0;background:#faf7ff;color:#684a9d;border-radius:16px;padding:13px 16px;font-weight:850}.study-set-card{background:#fff;border:1px solid #e9e6ee;border-radius:24px;padding:20px;box-shadow:0 8px 26px rgba(0,0,0,.035)}.study-set-head{display:flex;justify-content:space-between;gap:16px;align-items:flex-start}.study-set-head h3{margin:3px 0 5px;font-size:21px;letter-spacing:-.4px}.study-set-head p{margin:0;color:#8a8690;font-size:12px;line-height:1.5}.set-meta{font-size:11px;font-weight:800;color:#9b95a3}.set-actions{display:flex;gap:7px;align-items:center;flex-wrap:wrap;justify-content:flex-end}.set-delete{border:0;background:#fff6f7;color:#b55d6c;width:38px;height:38px;border-radius:12px}.set-main{display:grid;grid-template-columns:48px 1fr auto;gap:12px;align-items:center;margin-top:16px;padding:14px;background:linear-gradient(135deg,#fbf9fe,#fff);border:1px solid #eee8f5;border-radius:18px}.set-main .round-play{width:44px;height:44px;flex-basis:44px}.set-main strong{display:block;font-size:18px;line-height:1.35}.set-main span{display:block;margin-top:4px;color:#77727c;font-size:13px}.set-fav{border:0;background:#f8f6fa;border-radius:11px;width:36px;height:36px;color:#9a96a0}.set-fav.fav{background:#fff8e7;color:#eeaa34}.set-phrases{margin-top:10px;border-top:1px solid #f0edf3}.set-phrase{display:grid;grid-template-columns:34px 1fr auto;gap:10px;align-items:center;padding:12px 4px;border-bottom:1px dashed #eeeaf1}.set-phrase:last-child{border-bottom:0}.set-phrase small{display:block;color:#9b96a0;font-size:10px;font-weight:850;margin-bottom:3px}.set-phrase strong{display:block;font-size:15px}.set-phrase span{display:block;color:#7e7983;font-size:12px;margin-top:3px}.standalone-heading{margin:12px 2px 2px;font-size:12px;font-weight:850;color:#8d8794;letter-spacing:.2px}.save-set-dialog input[type="text"]{display:block;width:100%;box-sizing:border-box;margin-top:7px;border:1px solid #e5e1e9;background:#fbfafc;border-radius:13px;padding:12px 13px;font:inherit;color:#37343d}.save-set-help{font-size:12px;color:#817c88;line-height:1.5;margin:14px 0 8px}.save-set-items{display:flex;flex-direction:column;gap:7px;max-height:46vh;overflow:auto;padding-right:3px}.save-set-item{display:grid;grid-template-columns:20px 1fr;gap:10px;align-items:start;border:1px solid #ece8f0;background:#fff;border-radius:14px;padding:11px 12px;cursor:pointer}.save-set-item input{margin-top:3px;accent-color:var(--purple)}.save-set-item strong{display:block;color:#7f6aa3;font-size:10px;margin-bottom:3px}.save-set-item em{display:block;font-style:normal;font-weight:800;font-size:14px;color:#37333d}.save-set-item small{display:block;color:#85808a;font-size:11px;margin-top:3px}.save-set-actions{display:grid;grid-template-columns:1fr 1.3fr;gap:8px;margin-top:14px}
@media(max-width:650px){
  .section-heading .heading-actions #saveResultBtn{display:inline-flex!important;width:100%;justify-content:center;order:3}
  .review-summary-card{align-items:stretch;flex-direction:column;padding:18px}.review-start-btn{width:100%}.review-korean,.review-english{font-size:21px}.review-ratings{display:grid;grid-template-columns:1fr 1fr 1fr}.review-ratings button{padding:10px 6px;font-size:12px}.library-view-row{justify-content:stretch}.library-view-row .segment{width:100%}.library-view-row .segment button{flex:1}.play-main-actions{width:100%}.play-main-actions>*{flex:1}.study-set-card{padding:16px}.study-set-head{flex-direction:column}.set-actions{width:100%;justify-content:flex-start}.set-actions .soft-btn{flex:1}.set-main{grid-template-columns:42px 1fr auto;padding:12px}.set-main strong{font-size:16px}.save-set-actions{grid-template-columns:1fr}.save-set-items{max-height:50vh}
}

.tts-engine-panel{margin-top:8px;padding:12px;border:1px solid #eee8f7;background:#fbfaff;border-radius:16px}.tts-engine-panel .field-label:first-child{margin-top:0}.tts-mini-note{margin-top:8px;font-size:11.5px;line-height:1.55;color:#8a8593}.cache-actions{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:12px}.cache-actions .danger-soft{margin:0}.hidden{display:none!important}@media(max-width:560px){.cache-actions{grid-template-columns:1fr}}