:root{
  --bg:#0e1116;
  --bg-2:#151a22;
  --card:#1a212c;
  --card-2:#212a37;
  --ink:#eef2f7;
  --ink-soft:#aeb8c6;
  --ink-dim:#6c7787;
  --line:#2a3340;
  --accent:#ffd166;
  --accent-2:#06d6a0;
  --accent-3:#ef476f;
  --blue:#4cc9f0;
  --shadow:0 18px 50px -20px rgba(0,0,0,.7);
  --r:18px;
}
*{box-sizing:border-box;margin:0;padding:0;-webkit-tap-highlight-color:transparent;}
html,body{height:100%;}
body{
  background:
    radial-gradient(1200px 600px at 85% -10%, rgba(76,201,240,.10), transparent 60%),
    radial-gradient(900px 500px at -10% 110%, rgba(6,214,160,.10), transparent 55%),
    var(--bg);
  color:var(--ink);
  font-family:'Bricolage Grotesque',system-ui,sans-serif;
  line-height:1.5;
  -webkit-font-smoothing:antialiased;
  padding-bottom:90px;
}
.wrap{max-width:760px;margin:0 auto;padding:0 18px;}

/* ---------- Header ---------- */
header{padding:30px 0 14px;}
.brandrow{display:flex;align-items:center;justify-content:space-between;gap:12px;}
.brand{display:flex;align-items:center;gap:11px;}
.logo{
  width:42px;height:42px;border-radius:13px;flex:none;
  background:linear-gradient(135deg,var(--accent),var(--accent-3));
  display:grid;place-items:center;font-family:'Fraunces';font-weight:700;
  font-size:22px;color:#1a121a;box-shadow:0 8px 22px -8px var(--accent-3);
}
.brand h1{font-family:'Fraunces';font-weight:600;font-size:1.32rem;letter-spacing:-.01em;}
.brand .sub{font-size:.74rem;color:var(--ink-dim);letter-spacing:.14em;text-transform:uppercase;font-weight:600;}
.streak{
  display:flex;align-items:center;gap:7px;background:var(--card);border:1px solid var(--line);
  padding:8px 13px;border-radius:999px;font-size:.82rem;font-weight:600;color:var(--ink-soft);
}
.streak b{color:var(--accent);}

/* ---------- Stat strip ---------- */
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:18px;}
.stat{
  background:linear-gradient(180deg,var(--card),var(--bg-2));
  border:1px solid var(--line);border-radius:var(--r);padding:14px 14px 13px;position:relative;overflow:hidden;
}
.stat .n{font-family:'Fraunces';font-size:1.6rem;font-weight:600;line-height:1;}
.stat .l{font-size:.72rem;color:var(--ink-dim);margin-top:6px;letter-spacing:.04em;text-transform:uppercase;font-weight:600;}
.stat:nth-child(1) .n{color:var(--accent);}
.stat:nth-child(2) .n{color:var(--accent-2);}
.stat:nth-child(3) .n{color:var(--blue);}
.progbar{height:5px;background:var(--line);border-radius:99px;margin-top:11px;overflow:hidden;}
.progbar i{display:block;height:100%;background:linear-gradient(90deg,var(--accent-2),var(--blue));border-radius:99px;transition:width .6s cubic-bezier(.2,.9,.3,1);}

/* ---------- Tabs ---------- */
nav.tabs{
  position:fixed;bottom:0;left:0;right:0;z-index:40;
  background:rgba(14,17,22,.86);backdrop-filter:blur(16px);
  border-top:1px solid var(--line);
  display:flex;justify-content:center;gap:4px;padding:9px 10px calc(9px + env(safe-area-inset-bottom));
}
nav.tabs button{
  flex:1;max-width:150px;background:none;border:none;color:var(--ink-dim);
  font-family:inherit;font-size:.72rem;font-weight:600;cursor:pointer;
  display:flex;flex-direction:column;align-items:center;gap:4px;padding:5px 0;border-radius:12px;transition:.2s;
}
nav.tabs button svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;}
nav.tabs button.on{color:var(--accent);}
nav.tabs button.on svg{filter:drop-shadow(0 0 8px rgba(255,209,102,.5));}

/* ---------- Search ---------- */
.searchbar{position:relative;margin:20px 0 6px;}
.searchbar input{
  width:100%;background:var(--card);border:1px solid var(--line);border-radius:14px;
  color:var(--ink);font-family:inherit;font-size:.95rem;padding:13px 15px 13px 44px;outline:none;transition:.2s;
}
.searchbar input:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(255,209,102,.12);}
.searchbar svg{position:absolute;left:14px;top:50%;transform:translateY(-50%);width:19px;height:19px;stroke:var(--ink-dim);fill:none;stroke-width:2;}

/* ---------- Category chips ---------- */
.chips{display:flex;gap:8px;overflow-x:auto;padding:14px 0 6px;scrollbar-width:none;}
.chips::-webkit-scrollbar{display:none;}
.chip{
  flex:none;background:var(--card);border:1px solid var(--line);color:var(--ink-soft);
  padding:8px 15px;border-radius:999px;font-size:.83rem;font-weight:600;cursor:pointer;white-space:nowrap;transition:.18s;font-family:inherit;
}
.chip:hover{border-color:var(--ink-dim);}
.chip.on{background:var(--accent);color:#1a121a;border-color:var(--accent);}
.chip .ct{opacity:.6;font-weight:500;margin-left:4px;}

/* ---------- Phrase cards ---------- */
.group-label{display:flex;align-items:center;gap:10px;margin:22px 0 12px;}
.group-label .ic{font-size:1.2rem;}
.group-label h2{font-family:'Fraunces';font-weight:600;font-size:1.12rem;letter-spacing:-.01em;}
.group-label .bar{flex:1;height:1px;background:var(--line);}

.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r);
  padding:16px 17px;margin-bottom:11px;position:relative;transition:.2s;animation:rise .4s both;
}
@keyframes rise{from{opacity:0;transform:translateY(8px);}to{opacity:1;transform:none;}}
.card.learned{border-color:rgba(6,214,160,.4);background:linear-gradient(180deg,rgba(6,214,160,.06),var(--card));}
.card.new-phrase{border-color:rgba(255,209,102,.4);background:linear-gradient(180deg,rgba(255,209,102,.06),var(--card));}
.card .top{display:flex;align-items:flex-start;gap:12px;}
.en{font-size:1.06rem;font-weight:600;color:var(--ink);letter-spacing:-.005em;flex:1;line-height:1.4;}
.en .hl{color:var(--accent);}
.check{
  flex:none;width:28px;height:28px;border-radius:9px;border:1.5px solid var(--line);background:var(--bg-2);
  cursor:pointer;display:grid;place-items:center;transition:.2s;margin-top:1px;
}
.check svg{width:16px;height:16px;stroke:var(--ink-dim);fill:none;stroke-width:2.4;stroke-linecap:round;stroke-linejoin:round;opacity:0;transition:.2s;}
.card.learned .check{background:var(--accent-2);border-color:var(--accent-2);}
.card.learned .check svg{stroke:#06281f;opacity:1;}
.ex{margin-top:9px;font-size:.9rem;color:var(--ink-soft);font-style:italic;padding-left:13px;border-left:2px solid var(--line);}
.ex b{color:var(--blue);font-style:normal;font-weight:600;}
.fa{margin-top:8px;font-size:.85rem;color:var(--ink-dim);direction:rtl;text-align:right;font-family:Tahoma,sans-serif;}
.saybtn{
  position:absolute;bottom:14px;right:15px;background:var(--bg-2);border:1px solid var(--line);
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;cursor:pointer;transition:.2s;
}
.saybtn:hover{border-color:var(--accent);background:var(--card-2);}
.saybtn svg{width:17px;height:17px;stroke:var(--ink-soft);fill:none;stroke-width:2;}
.card:has(.saybtn) .ex,.card:has(.saybtn) .fa{padding-right:42px;}

/* ---------- Flashcards ---------- */
.flash-stage{display:flex;flex-direction:column;align-items:center;padding:10px 0 0;}
.flashcard{
  width:100%;max-width:520px;aspect-ratio:3/2;perspective:1600px;cursor:pointer;margin:8px auto 0;
}
.flash-inner{position:relative;width:100%;height:100%;transition:transform .6s cubic-bezier(.2,.85,.3,1);transform-style:preserve-3d;}
.flashcard.flipped .flash-inner{transform:rotateY(180deg);}
.face{
  position:absolute;inset:0;backface-visibility:hidden;border-radius:24px;border:1px solid var(--line);
  padding:30px;display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;box-shadow:var(--shadow);
}
.face.front{background:linear-gradient(160deg,var(--card-2),var(--bg-2));}
.face.back{background:linear-gradient(160deg,#1e2a25,var(--bg-2));transform:rotateY(180deg);}
.face .tag{font-size:.72rem;letter-spacing:.16em;text-transform:uppercase;color:var(--ink-dim);font-weight:700;margin-bottom:14px;}
.face .big{font-family:'Fraunces';font-weight:500;font-size:1.5rem;line-height:1.35;letter-spacing:-.01em;}
.face.back .big{font-size:1.1rem;font-style:italic;color:var(--accent-2);font-family:'Bricolage Grotesque';}
.face .hint{margin-top:16px;font-size:.78rem;color:var(--ink-dim);}
.flip-fa{margin-top:14px;font-family:Tahoma;direction:rtl;color:var(--ink-soft);font-size:.92rem;}
.flash-ctrls{display:flex;gap:11px;margin-top:22px;width:100%;max-width:520px;}
.fbtn{
  flex:1;padding:14px;border-radius:14px;border:1px solid var(--line);background:var(--card);
  color:var(--ink);font-family:inherit;font-weight:600;font-size:.92rem;cursor:pointer;transition:.18s;
}
.fbtn.again{color:var(--accent-3);}.fbtn.again:hover{background:rgba(239,71,111,.12);border-color:var(--accent-3);}
.fbtn.good{color:var(--accent-2);}.fbtn.good:hover{background:rgba(6,214,160,.12);border-color:var(--accent-2);}
.flash-meta{margin-top:18px;color:var(--ink-dim);font-size:.85rem;font-family:'JetBrains Mono';}

.empty{text-align:center;padding:60px 20px;color:var(--ink-dim);}
.empty .em{font-size:2.4rem;margin-bottom:12px;}
.empty h3{font-family:'Fraunces';color:var(--ink-soft);font-weight:500;margin-bottom:6px;}

.views > section{display:none;}
.views > section.active{display:block;animation:fade .35s both;}
@keyframes fade{from{opacity:0;}to{opacity:1;}}

.ask{
  background:linear-gradient(135deg,rgba(255,209,102,.1),rgba(239,71,111,.08));
  border:1px solid var(--line);border-radius:var(--r);padding:18px 18px;margin:22px 0;
}
.ask h3{font-family:'Fraunces';font-weight:600;font-size:1.05rem;margin-bottom:6px;}
.ask p{font-size:.9rem;color:var(--ink-soft);}
.ask .ph{font-family:'JetBrains Mono';color:var(--accent);font-size:.84rem;background:var(--bg);padding:2px 7px;border-radius:6px;direction:rtl;display:inline-block;margin-top:2px;}

/* ---------- Add-phrase section ---------- */
.add-section{
  background:linear-gradient(135deg,rgba(255,209,102,.07),rgba(6,214,160,.05));
  border:1px solid var(--line);border-radius:var(--r);padding:20px;margin:22px 0;
}
.add-header h3{font-family:'Fraunces';font-weight:600;font-size:1.05rem;margin-bottom:4px;}
.add-header p{font-size:.88rem;color:var(--ink-soft);margin-bottom:14px;}

.fa-input{
  width:100%;background:var(--bg-2);border:1px solid var(--line);border-radius:12px;
  color:var(--ink);font-family:Tahoma,sans-serif;font-size:1rem;padding:12px 14px;
  outline:none;resize:none;transition:.2s;line-height:1.6;
}
.fa-input:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(255,209,102,.12);}
.fa-input::placeholder{color:var(--ink-dim);direction:rtl;}

.ask-btn{
  width:100%;margin-top:11px;padding:13px;border-radius:13px;
  background:linear-gradient(135deg,var(--accent),#ffbd2e);border:none;
  color:#1a121a;font-family:inherit;font-weight:700;font-size:.95rem;
  cursor:pointer;transition:.18s;display:flex;align-items:center;justify-content:center;gap:8px;
}
.ask-btn:hover{opacity:.9;transform:translateY(-1px);}
.ask-btn:disabled{opacity:.5;cursor:not-allowed;transform:none;}
.ask-btn.loading{background:var(--card);color:var(--ink-soft);border:1px solid var(--line);}

/* preview card */
.preview-card{
  margin-top:14px;background:var(--card);border:1px solid rgba(6,214,160,.3);
  border-radius:14px;padding:16px;animation:rise .3s both;
}
.preview-en{font-size:1.1rem;font-weight:700;color:var(--ink);margin-bottom:8px;}
.preview-ex{font-size:.9rem;color:var(--ink-soft);font-style:italic;padding-left:12px;border-left:2px solid var(--accent-2);margin-bottom:10px;}
.preview-meta{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px;gap:8px;}
.preview-cat{background:var(--bg-2);border:1px solid var(--line);border-radius:999px;padding:4px 11px;font-size:.75rem;font-weight:700;color:var(--accent-2);letter-spacing:.08em;text-transform:uppercase;}
.preview-fa{font-family:Tahoma,sans-serif;font-size:.85rem;color:var(--ink-dim);direction:rtl;}
.preview-provider{font-size:.72rem;font-weight:600;letter-spacing:.06em;text-transform:uppercase;opacity:.75;margin-bottom:10px;}
.provider-gemini{color:#8ab4f8;}
.provider-workers{color:#f9a825;}
.save-btn{
  width:100%;padding:11px;border-radius:11px;background:var(--accent-2);border:none;
  color:#06281f;font-family:inherit;font-weight:700;font-size:.9rem;cursor:pointer;transition:.18s;
}
.save-btn:hover{opacity:.85;}
.save-btn:disabled{opacity:.5;cursor:not-allowed;}

/* status / toast */
.add-status{
  margin-top:10px;padding:10px 14px;border-radius:11px;font-size:.88rem;font-weight:600;text-align:center;
}
.add-status.ok{background:rgba(6,214,160,.12);color:var(--accent-2);border:1px solid rgba(6,214,160,.25);}
.add-status.err{background:rgba(239,71,111,.12);color:var(--accent-3);border:1px solid rgba(239,71,111,.25);}

/* ---------- Toast notification ---------- */
.toast{
  position:fixed;bottom:80px;left:50%;transform:translateX(-50%) translateY(10px);
  background:var(--card-2);border:1px solid var(--line);border-radius:999px;
  padding:10px 20px;font-size:.88rem;font-weight:600;color:var(--ink);
  opacity:0;transition:opacity .25s,transform .25s;pointer-events:none;z-index:100;
  white-space:nowrap;box-shadow:var(--shadow);
}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0);}

/* ---------- Footer ---------- */
footer{text-align:center;padding:30px 0 10px;color:var(--ink-dim);font-size:.78rem;}
.footer-actions{margin-top:10px;display:flex;justify-content:center;align-items:center;gap:8px;flex-wrap:wrap;}
.footer-link{cursor:pointer;text-decoration:underline;opacity:.7;transition:.15s;}
.footer-link:hover{opacity:1;}
.footer-sep{opacity:.4;}
.import-area{margin-top:12px;display:flex;flex-direction:column;gap:8px;}
.import-area textarea{
  width:100%;background:var(--bg-2);border:1px solid var(--line);border-radius:10px;
  color:var(--ink);font-family:'JetBrains Mono',monospace;font-size:.78rem;padding:10px 12px;outline:none;resize:none;
}
.import-area textarea:focus{border-color:var(--accent);}
.import-confirm-btn{
  padding:9px 20px;border-radius:10px;background:var(--card);border:1px solid var(--line);
  color:var(--ink);font-family:inherit;font-weight:600;font-size:.85rem;cursor:pointer;transition:.18s;
}
.import-confirm-btn:hover{border-color:var(--accent-2);color:var(--accent-2);}

/* ---------- Loading spinner ---------- */
@keyframes spin{to{transform:rotate(360deg);}}
.spinner{
  display:inline-block;width:16px;height:16px;border:2px solid rgba(255,255,255,.3);
  border-top-color:currentColor;border-radius:50%;animation:spin .7s linear infinite;vertical-align:middle;margin-right:6px;
}