:root{
  --paper:#EDEFE4;
  --paper-2:#E2E6D7;
  --ink:#1C2321;
  --ink-soft:#4C564F;
  --ink-faint:#6B756D;
  --card:#FBFAF3;
  --card-border:#D7DBC6;
  --shadow:rgba(28,35,33,.14);
  --primary-bg:#1F4B4C;
  --primary-bg-hover:#173A3B;
  --primary-fg:#FBFAF3;
  --accent-bg:#C68A3E;
  --accent-bg-hover:#B47B32;
  --accent-fg:#241804;
  --practice-bg:#F4DCCF;
  --practice-fg:#7A3419;
  --practice-dot:#B5502D;
  --mastered-bg:#DCE8DA;
  --mastered-fg:#26502C;
  --mastered-dot:#4C7A52;
  --learning-bg:#E3E7EA;
  --learning-fg:#2E3A42;
  --learning-dot:#5C7480;
  --danger-fg:#7A3419;
  --ring:#1F4B4C;
  --radius-s:8px;
  --radius-m:14px;
  --radius-l:20px;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --paper:#131917;
    --paper-2:#1A211D;
    --ink:#F1EFE4;
    --ink-soft:#BCC5B9;
    --ink-faint:#8B968C;
    --card:#1E2622;
    --card-border:#2E3833;
    --shadow:rgba(0,0,0,.4);
    --primary-bg:#4FB3AE;
    --primary-bg-hover:#65C2BD;
    --primary-fg:#0D1917;
    --accent-bg:#E3A75C;
    --accent-bg-hover:#EDB876;
    --accent-fg:#251804;
    --practice-bg:#3A2A20;
    --practice-fg:#EFBC9F;
    --practice-dot:#E08A63;
    --mastered-bg:#1F2F20;
    --mastered-fg:#A9D8AE;
    --mastered-dot:#7FB585;
    --learning-bg:#212B2E;
    --learning-fg:#B4CBD3;
    --learning-dot:#6E97A6;
    --danger-fg:#EFBC9F;
    --ring:#4FB3AE;
  }
}
:root[data-theme="dark"]{
  --paper:#131917;
  --paper-2:#1A211D;
  --ink:#F1EFE4;
  --ink-soft:#BCC5B9;
  --ink-faint:#8B968C;
  --card:#1E2622;
  --card-border:#2E3833;
  --shadow:rgba(0,0,0,.4);
  --primary-bg:#4FB3AE;
  --primary-bg-hover:#65C2BD;
  --primary-fg:#0D1917;
  --accent-bg:#E3A75C;
  --accent-bg-hover:#EDB876;
  --accent-fg:#251804;
  --practice-bg:#3A2A20;
  --practice-fg:#EFBC9F;
  --practice-dot:#E08A63;
  --mastered-bg:#1F2F20;
  --mastered-fg:#A9D8AE;
  --mastered-dot:#7FB585;
  --learning-bg:#212B2E;
  --learning-fg:#B4CBD3;
  --learning-dot:#6E97A6;
  --danger-fg:#EFBC9F;
  --ring:#4FB3AE;
}

*{box-sizing:border-box;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:"IBM Plex Sans",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:17px;
  line-height:1.5;
  -webkit-font-smoothing:antialiased;
}
.wrap{
  max-width:780px;
  margin:0 auto;
  padding:20px 20px 100px;
}
h1,h2,h3{text-wrap:balance; margin:0;}
.label{
  font-size:13px;
  text-transform:uppercase;
  letter-spacing:.08em;
  color:var(--ink-faint);
  font-weight:700;
}
.serif{font-family:"Piazzolla",Georgia,"Times New Roman",serif;}
.mono{font-family:"IBM Plex Mono",ui-monospace,Menlo,monospace;}

/* top bar */
.topbar{
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  padding-top:6px;
  margin-bottom:20px;
}
.brand{display:flex; align-items:center; gap:12px;}
.brand-mark{
  width:42px;height:42px;border-radius:11px;
  background:var(--primary-bg); color:var(--primary-fg);
  display:flex;align-items:center;justify-content:center;
  flex-shrink:0;
}
.brand-mark svg{width:22px;height:22px;}
.brand-title{font-family:"Piazzolla",serif; font-weight:600; font-size:25px; line-height:1.1;}
.brand-sub{font-size:14px; color:var(--ink-soft); margin-top:3px;}
.stats{display:flex; gap:9px; flex-wrap:wrap; align-items:center;}
.stat-chip{
  background:var(--card); border:1px solid var(--card-border);
  border-radius:999px; padding:8px 14px;
  font-size:14.5px; color:var(--ink-soft);
  display:flex; align-items:center; gap:7px;
  box-shadow:0 1px 2px var(--shadow);
}
.stat-chip b{color:var(--ink); font-weight:700; font-family:"IBM Plex Mono",monospace;}
.stat-dot{width:8px;height:8px;border-radius:50%;flex-shrink:0;}

/* nav */
.nav{
  display:flex; gap:6px; flex-wrap:wrap;
  background:var(--paper-2);
  border-radius:var(--radius-m);
  padding:5px;
  margin-bottom:24px;
}
.nav-btn{
  flex:1 1 auto;
  min-width:100px;
  min-height:48px;
  border:none; background:transparent; cursor:pointer;
  padding:12px 14px; border-radius:9px;
  font-family:inherit; font-size:16px; font-weight:700;
  color:var(--ink-soft);
  transition:background .15s, color .15s;
}
.nav-btn:hover{color:var(--ink);}
.nav-btn[aria-pressed="true"]{
  background:var(--card); color:var(--ink);
  box-shadow:0 1px 3px var(--shadow);
}

button{cursor:pointer;}
button:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible, .card:focus-visible{
  outline:3px solid var(--ring); outline-offset:2px;
}

.btn{
  font-family:inherit; font-weight:700; font-size:16.5px;
  border-radius:var(--radius-s); border:1px solid transparent;
  padding:14px 20px; min-height:50px;
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
}
.btn-primary{background:var(--primary-bg); color:var(--primary-fg);}
.btn-primary:hover{background:var(--primary-bg-hover);}
.btn-accent{background:var(--accent-bg); color:var(--accent-fg);}
.btn-accent:hover{background:var(--accent-bg-hover);}
.btn-ghost{background:transparent; color:var(--ink-soft); border-color:var(--card-border);}
.btn-ghost:hover{color:var(--ink); border-color:var(--ink-faint);}
.btn-danger{background:transparent; color:var(--danger-fg); border-color:var(--card-border);}
.btn[disabled]{opacity:.5; cursor:not-allowed;}
.btn-block{width:100%;}

/* direction segmented control */
.seg{
  display:inline-flex; background:var(--paper-2); border-radius:999px; padding:4px; gap:2px;
}
.seg button{
  border:none; background:transparent; font-family:inherit; font-weight:700; font-size:14.5px;
  color:var(--ink-soft); padding:10px 16px; border-radius:999px; min-height:44px;
}
.seg button[aria-pressed="true"]{background:var(--card); color:var(--ink); box-shadow:0 1px 2px var(--shadow);}

.session-row{
  display:flex; align-items:center; justify-content:space-between; gap:12px; flex-wrap:wrap;
  margin-bottom:18px;
}
.progress-text{font-size:14px; color:var(--ink-soft); font-family:"IBM Plex Mono",monospace; font-weight:600;}

/* card */
.stage{display:flex; flex-direction:column; align-items:center; gap:22px;}
.card{
  width:100%; max-width:540px;
  background:var(--card); border:1px solid var(--card-border);
  border-radius:var(--radius-l);
  box-shadow:0 6px 24px var(--shadow);
  padding:44px 32px 34px;
  position:relative;
  cursor:pointer;
  min-height:250px;
  display:flex; flex-direction:column;
}
.card-pin{
  position:absolute; top:14px; right:14px;
  background:none; border:none; font-size:22px; line-height:1;
  color:var(--ink-faint); padding:9px; border-radius:8px;
  min-width:44px; min-height:44px;
}
.card-pin.is-on{color:var(--accent-bg);}
.card-pin:hover{background:var(--paper-2);}
.card-lang{
  align-self:flex-start;
  font-size:12.5px; font-weight:700; letter-spacing:.08em; text-transform:uppercase;
  color:var(--ink-faint);
  margin-bottom:16px;
}
.card-word{
  font-family:"Piazzolla",serif; font-weight:500;
  font-size:clamp(2.3rem, 7.5vw, 3.2rem);
  line-height:1.12;
  text-wrap:balance;
}
.card-pos{font-family:"Piazzolla",serif; font-style:italic; color:var(--ink-soft); font-size:16.5px; margin-top:8px;}
.card-hint{
  margin-top:auto; padding-top:24px;
  font-size:14px; color:var(--ink-faint); text-align:center;
}
.card-answer{
  font-family:"Piazzolla",serif; font-weight:500;
  font-size:clamp(2rem, 6vw, 2.6rem);
  color:var(--primary-bg);
  margin-bottom:3px;
  text-wrap:balance;
}
@keyframes reveal{from{opacity:0; transform:translateY(5px);} to{opacity:1; transform:none;}}
.reveal-anim{animation:reveal .3s ease both;}
@media (prefers-reduced-motion: reduce){.reveal-anim{animation:none;}}

.word-line{display:flex; align-items:center; gap:8px; flex-wrap:wrap;}
.speak-btn{
  display:inline-flex; align-items:center; justify-content:center; flex-shrink:0;
  width:40px; height:40px; border-radius:50%;
  border:1px solid var(--card-border); background:var(--paper);
  color:var(--ink-soft); font-size:16px; padding:0;
}
.speak-btn:hover{color:var(--primary-bg); border-color:var(--primary-bg);}
.speak-btn.small{width:32px; height:32px; font-size:13.5px;}

.wd-examples{margin-top:22px; display:flex; flex-direction:column; gap:12px;}
.wd-example{border-left:3px solid var(--card-border); padding-left:14px;}
.wd-ex-en{font-family:"Piazzolla",serif; font-style:italic; margin:0; font-size:16.5px; line-height:1.5;}
.wd-ex-row{display:flex; align-items:center; gap:8px; flex-wrap:wrap; margin-bottom:3px;}
.wd-ex-pl{margin:0; font-size:15px; color:var(--ink-soft);}
.wd-explain{margin-top:18px; padding-top:18px; border-top:1px solid var(--card-border);}
.wd-explain p{margin:6px 0 0; font-size:16px; line-height:1.65; color:var(--ink);}
.wd-ff{
  margin-top:14px; display:flex; gap:9px; align-items:flex-start;
  background:var(--practice-bg); color:var(--practice-fg);
  border-radius:var(--radius-s); padding:12px 14px; font-size:14.5px; line-height:1.55;
}
.wd-ff-icon{flex-shrink:0;}

.grade-row{display:flex; gap:10px; width:100%; max-width:540px; flex-wrap:wrap;}
.grade-row .btn{flex:1 1 140px;}

.badge{
  display:inline-flex; align-items:center; gap:6px;
  font-size:13px; font-weight:700; padding:5px 11px; border-radius:999px;
  white-space:nowrap;
}
.badge-new{background:var(--learning-bg); color:var(--learning-fg);}
.badge-learning{background:var(--practice-bg); color:var(--practice-fg);}
.badge-mastered{background:var(--mastered-bg); color:var(--mastered-fg);}
.badge-dot{width:7px;height:7px;border-radius:50%;}

.empty{
  text-align:center; padding:54px 20px; color:var(--ink-soft);
  font-size:16.5px;
  display:flex; flex-direction:column; align-items:center; gap:16px;
}
.empty-emoji{font-size:42px;}

/* reading view */
.read-list{display:flex; flex-direction:column; gap:14px;}
.read-card{
  background:var(--card); border:1px solid var(--card-border); border-radius:var(--radius-m);
  padding:20px 22px; box-shadow:0 1px 3px var(--shadow);
}
.read-head{display:flex; align-items:baseline; justify-content:space-between; gap:12px; flex-wrap:wrap;}
.read-words{display:flex; align-items:center; gap:9px; flex-wrap:wrap;}
.read-en{font-family:"Piazzolla",serif; font-weight:600; font-size:21px;}
.read-arrow{color:var(--ink-faint); font-size:16px;}
.read-pl{font-family:"Piazzolla",serif; font-size:19px; color:var(--primary-bg);}
.row-actions{display:flex; gap:6px; align-items:center;}
.icon-btn{
  background:none; border:1px solid var(--card-border); border-radius:8px;
  width:40px; height:40px; display:flex; align-items:center; justify-content:center;
  color:var(--ink-soft); font-size:16px;
}
.icon-btn:hover{color:var(--ink); border-color:var(--ink-faint);}
.icon-btn.is-on{color:var(--accent-bg); border-color:var(--accent-bg);}

/* add view */
.add-box{
  background:var(--card); border:1px solid var(--card-border); border-radius:var(--radius-m);
  padding:26px; box-shadow:0 1px 3px var(--shadow);
}
.field{display:flex; flex-direction:column; gap:7px; margin-bottom:16px;}
.field label{font-size:14px; font-weight:700; color:var(--ink-soft);}
input[type=text], input[type=password], textarea, select{
  font-family:inherit; font-size:17px; color:var(--ink);
  background:var(--paper); border:1px solid var(--card-border); border-radius:var(--radius-s);
  padding:12px 14px; width:100%; min-height:48px;
}
textarea{resize:vertical; min-height:72px;}
.ask-row{display:flex; gap:10px; flex-wrap:wrap;}
.ask-row input{flex:1 1 220px;}
.hint-text{font-size:14px; color:var(--ink-faint); margin-top:12px; line-height:1.5;}
.link-btn{background:none; border:none; color:var(--ink-soft); text-decoration:underline; font-family:inherit; font-size:15px; padding:0;}
.link-btn:hover{color:var(--ink);}
.result-card{margin-top:20px; padding-top:20px; border-top:1px solid var(--card-border);}
.error-box{
  margin-top:14px; background:var(--practice-bg); color:var(--practice-fg);
  border-radius:var(--radius-s); padding:13px 15px; font-size:15px; line-height:1.5;
}
.thinking{display:flex; align-items:center; gap:10px; color:var(--ink-soft); font-size:15.5px; margin-top:14px;}
.spinner{
  width:18px;height:18px;border-radius:50%;
  border:2.5px solid var(--card-border); border-top-color:var(--primary-bg);
  animation:spin .7s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg);}}
@media (prefers-reduced-motion: reduce){.spinner{animation:none;}}

.bulk-textarea{min-height:220px; font-family:"IBM Plex Mono",monospace; font-size:15px;}
.bulk-list{max-height:420px; overflow-y:auto; display:flex; flex-direction:column; gap:7px; margin-top:4px;}
.bulk-item{
  display:flex; align-items:center; gap:11px; padding:11px 13px;
  border:1px solid var(--card-border); border-radius:8px; background:var(--card);
  font-size:15.5px;
}
.bulk-item.is-existing{opacity:.6;}
.bulk-item input[type=checkbox]{width:20px; height:20px; flex-shrink:0; accent-color:var(--primary-bg);}
.bulk-actions{display:flex; gap:14px; margin-bottom:12px;}
.bulk-btnrow{display:flex; gap:10px; flex-wrap:wrap; margin-top:20px;}
.bulk-summary{margin:0 0 12px; color:var(--ink-soft); font-size:15px;}

/* all words view */
.search-row{margin-bottom:16px;}
.word-row{
  background:var(--card); border:1px solid var(--card-border); border-radius:var(--radius-s);
  padding:15px 17px; margin-bottom:9px;
}
.word-row-top{display:flex; align-items:center; justify-content:space-between; gap:10px; flex-wrap:wrap; cursor:pointer;}
.word-row-words{display:flex; align-items:center; gap:9px; flex-wrap:wrap;}
.word-row-en{font-family:"Piazzolla",serif; font-weight:600; font-size:18px;}
.word-row-pl{color:var(--ink-soft); font-size:16px;}
.word-row-detail{margin-top:16px; padding-top:16px; border-top:1px solid var(--card-border);}
.confirm-row{display:flex; align-items:center; gap:9px; font-size:14.5px;}
.word-select-cb{width:21px; height:21px; accent-color:var(--primary-bg); flex-shrink:0; cursor:pointer;}

/* bulk edit bar (Wszystkie słowa) */
.bulk-bar-idle{margin-bottom:10px;}
.bulk-bar{margin-bottom:16px; display:flex; flex-direction:column; gap:10px;}
.bulk-bar-row{display:flex; align-items:center; gap:14px; flex-wrap:wrap;}
.bulk-count{font-size:15.5px; font-weight:700; color:var(--ink);}
.bulk-actions-row{
  background:var(--card); border:1px solid var(--card-border); border-radius:var(--radius-m);
  padding:14px 16px;
}
.bulk-actions-row select{width:auto; min-width:190px; flex:1 1 190px;}
.bulk-actions-row .btn{flex:0 0 auto;}
.bulk-confirm{
  background:var(--practice-bg); color:var(--practice-fg); border-radius:var(--radius-m);
  padding:14px 16px; font-size:15.5px; font-weight:600;
}

.toast{
  position:fixed; left:50%; bottom:24px; transform:translateX(-50%);
  background:var(--ink); color:var(--paper);
  padding:13px 20px; border-radius:999px; font-size:15px; font-weight:700;
  box-shadow:0 6px 20px var(--shadow); z-index:20;
  max-width:90vw;
}

/* category chip in stats */
.cat-chip{background:var(--primary-bg); color:var(--primary-fg); border-color:var(--primary-bg);}
.chip-x{
  background:none; border:none; color:inherit; opacity:.8; cursor:pointer;
  font-size:13px; padding:2px; margin-left:2px; line-height:1;
}
.chip-x:hover{opacity:1;}

/* categories view */
.cat-grid{display:grid; grid-template-columns:repeat(auto-fill, minmax(200px,1fr)); gap:14px;}
.cat-card{
  background:var(--card); border:1px solid var(--card-border); border-radius:var(--radius-m);
  padding:18px 20px; box-shadow:0 1px 3px var(--shadow); cursor:pointer; text-align:left;
}
.cat-card:hover{border-color:var(--primary-bg);}
.cat-card-top{display:flex; align-items:center; justify-content:space-between;}
.cat-card-icon{font-size:24px;}
.cat-del{border:none; background:none; min-width:40px; min-height:40px;}
.cat-card-name{font-size:20px; font-weight:700; margin-top:12px;}
.cat-card-meta{font-size:14px; color:var(--ink-soft); margin-top:5px;}

/* listen (audio) view - big and glanceable, made for a quick look while driving */
.listen-box{
  background:var(--card); border:1px solid var(--card-border); border-radius:var(--radius-l);
  box-shadow:0 6px 24px var(--shadow); padding:44px 32px; text-align:center;
  max-width:540px; margin:0 auto;
}
.listen-word{
  font-family:"Piazzolla",serif; font-weight:600; font-size:clamp(2.2rem, 8vw, 3.6rem);
  color:var(--ink-faint); transition:color .2s, transform .2s; text-wrap:balance;
  line-height:1.15;
}
.listen-word.is-active{color:var(--ink); transform:scale(1.03);}
.listen-word-answer.is-active{color:var(--primary-bg);}
.listen-arrow{color:var(--ink-faint); font-size:22px; margin:14px 0;}
.listen-controls{
  display:flex; align-items:center; justify-content:center; gap:18px;
  max-width:540px; margin:24px auto 0;
}
.listen-controls .icon-btn{width:48px; height:48px; font-size:19px;}
.listen-play-btn{min-width:190px; font-size:17.5px;}
.listen-settings{
  display:flex; align-items:center; gap:20px; flex-wrap:wrap; justify-content:center;
  max-width:540px; margin:26px auto 0;
  font-size:15px;
}
.listen-settings select{width:auto; padding:10px 12px; min-height:44px;}
.listen-loop{display:flex; align-items:center; gap:8px; font-size:15px; color:var(--ink-soft); cursor:pointer;}
.listen-loop input{width:20px; height:20px; accent-color:var(--primary-bg);}

/* login screen */
.login-box{max-width:380px; margin:60px auto 0;}
.login-title{font-family:"Piazzolla",serif; font-weight:600; font-size:23px; margin-bottom:5px;}
.login-sub{color:var(--ink-soft); font-size:15px; margin:0 0 20px;}

/* profile picker ("kto się uczy?") */
.profile-picker{max-width:560px; margin:40px auto 0;}
.profile-picker .login-title{font-size:26px; margin-bottom:28px;}
.profile-grid{
  display:grid; grid-template-columns:repeat(auto-fill, minmax(120px,1fr)); gap:16px;
}
.profile-tile{position:relative;}
.profile-tile-btn{
  width:100%; font-family:inherit; background:var(--card); border:1px solid var(--card-border); border-radius:var(--radius-l);
  padding:22px 10px 16px; display:flex; flex-direction:column; align-items:center; gap:10px;
  box-shadow:0 1px 3px var(--shadow);
}
.profile-tile-btn:hover{border-color:var(--primary-bg);}
.profile-avatar{
  width:64px; height:64px; border-radius:50%;
  background:var(--primary-bg); color:var(--primary-fg);
  display:flex; align-items:center; justify-content:center; font-size:30px;
}
.profile-avatar-add{background:var(--paper-2); color:var(--ink-faint); font-size:28px; font-weight:700;}
.profile-name{font-weight:700; font-size:15.5px; text-align:center; word-break:break-word;}
.profile-del{
  position:absolute; top:6px; right:6px; background:var(--card); border:1px solid var(--card-border);
  border-radius:50%; width:32px; height:32px; display:flex; align-items:center; justify-content:center;
  font-size:14px; color:var(--ink-soft);
}
.profile-del:hover{color:var(--danger-fg); border-color:var(--danger-fg);}
.profile-panel{max-width:420px; margin:22px auto 0;}
.emoji-pick{display:flex; flex-wrap:wrap; gap:8px;}
.emoji-opt{
  width:44px; height:44px; border-radius:10px; font-size:20px;
  border:1px solid var(--card-border); background:var(--paper);
  display:flex; align-items:center; justify-content:center;
}
.emoji-opt.is-on{border-color:var(--primary-bg); background:var(--card); box-shadow:0 0 0 2px var(--primary-bg) inset;}
.profile-chip{font-family:inherit; font-weight:700;}
.profile-chip:hover{border-color:var(--primary-bg); color:var(--primary-bg);}

@media (max-width:480px){
  body{font-size:16.5px;}
  .wrap{padding:14px 14px 94px;}
  .card{padding:32px 22px 26px; min-height:230px;}
  .card-word{font-size:clamp(2rem, 9vw, 2.6rem);}
  .grade-row .btn{flex:1 1 100%;}
  .brand-title{font-size:21px;}
  .nav{display:grid; grid-template-columns:1fr 1fr;}
  .nav-btn{min-width:0; font-size:15px;}
  .login-box{margin-top:30px;}
  .listen-box{padding:28px 18px;}
  .listen-word{font-size:clamp(2rem, 11vw, 2.8rem);}
  .listen-settings{gap:14px;}
  .listen-controls{gap:12px;}
  .listen-play-btn{min-width:0; flex:1 1 auto;}
}