:root {
  --bg: #0b0f1a;
  --bg-2: #121827;
  --panel: #161d2e;
  --panel-2: #1c2438;
  --border: #253051;
  --text: #eef1fa;
  --text-dim: #9aa3bf;
  --accent: #ef3b47;   /* Turkish red */
  --accent-2: #ffd23f;
  --good: #22c55e;
  --bad: #ef4444;
  --shadow: 0 10px 30px rgba(0,0,0,.35);
  --radius: 16px;
  --radius-sm: 10px;
  --font: "Manrope", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background:
    radial-gradient(1000px 500px at 90% -10%, rgba(239,59,71,.18), transparent 60%),
    radial-gradient(800px 400px at -10% 10%, rgba(255,210,63,.10), transparent 60%),
    linear-gradient(180deg, var(--bg), #06090f 80%);
  color: var(--text);
  font-family: var(--font);
  min-height: 100vh;
  -webkit-tap-highlight-color: transparent;
}

a { color: var(--accent-2); text-decoration: none; }
a:hover { text-decoration: underline; }

.app {
  max-width: 1100px;
  margin: 0 auto;
  padding: 20px 18px 60px;
}

.topbar {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 14px 18px;
  background: linear-gradient(180deg, rgba(255,255,255,.04), rgba(255,255,255,.02));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  backdrop-filter: blur(6px);
  position: sticky; top: 10px; z-index: 10;
}
.brand { display: flex; align-items: center; gap: 12px; }
.flag { font-size: 28px; line-height: 1; }
.brand-title { font-weight: 800; letter-spacing: .2px; font-size: 18px; }
.brand-sub { font-size: 12px; color: var(--text-dim); }
.nav { display: flex; gap: 6px; flex-wrap: wrap; }
.nav-btn {
  background: transparent; color: var(--text-dim);
  border: 1px solid transparent;
  padding: 8px 12px; border-radius: 10px;
  font-family: inherit; font-weight: 600; font-size: 14px;
  cursor: pointer; transition: all .15s ease;
}
.nav-btn:hover { background: var(--panel-2); color: var(--text); }
.nav-btn.active { background: linear-gradient(180deg, #20294a, #1a2240); color: #fff; border-color: var(--border); }

.score {
  display: flex; align-items: center; gap: 6px;
  background: #20294a; color: var(--accent-2);
  font-weight: 700; padding: 8px 12px;
  border-radius: 10px; border: 1px solid var(--border);
  font-variant-numeric: tabular-nums;
}
.score-icon { filter: drop-shadow(0 0 6px rgba(255,210,63,.5)); }

main { margin-top: 18px; }

.card {
  background: linear-gradient(180deg, var(--panel), var(--panel-2));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: var(--shadow);
}

.h1 { font-size: 28px; font-weight: 800; margin: 0 0 6px; letter-spacing: -.2px; }
.h2 { font-size: 20px; font-weight: 700; margin: 0 0 12px; }
.muted { color: var(--text-dim); font-size: 14px; }

.row { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
.spacer { flex: 1; }

.btn {
  background: linear-gradient(180deg, #242d4d, #1a2240);
  color: #fff; border: 1px solid var(--border);
  padding: 10px 16px; border-radius: 10px; cursor: pointer;
  font-family: inherit; font-weight: 600; font-size: 14px;
  transition: transform .08s ease, background .15s ease, border-color .15s;
}
.btn:hover { background: #2a3561; }
.btn:active { transform: translateY(1px); }
.btn-primary {
  background: linear-gradient(180deg, #f04452, #c7202b);
  border-color: #a8252f;
}
.btn-primary:hover { background: linear-gradient(180deg, #ff5762, #e02a37); }
.btn-ghost { background: transparent; }
.btn-good { background: linear-gradient(180deg,#23aa55,#158a40); border-color:#156b34; }
.btn-bad { background: linear-gradient(180deg,#e14a4a,#b63232); border-color:#8e2929; }
.btn[disabled] { opacity: .5; cursor: not-allowed; }

.select, .input {
  background: #0f1527; color: var(--text);
  border: 1px solid var(--border);
  padding: 10px 12px; border-radius: 10px;
  font-family: inherit; font-size: 14px; outline: none;
}
.input:focus { border-color: #3a4a80; }

/* ======== HOME ======== */
.hero {
  display: grid; grid-template-columns: 1.3fr 1fr; gap: 16px;
}
@media (max-width: 860px) { .hero { grid-template-columns: 1fr; } }
.hero h1 { font-size: 34px; margin: 0 0 10px; line-height: 1.1; letter-spacing: -.5px; }
.hero p { color: var(--text-dim); margin: 0 0 18px; font-size: 16px; }
.hero-cards { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.hero-card {
  background: #0f1527;
  border: 1px solid var(--border); border-radius: 12px;
  padding: 14px; cursor: pointer; transition: transform .1s ease, border-color .15s;
}
.hero-card:hover { border-color: #3a4a80; transform: translateY(-2px); }
.hero-card .emoji { font-size: 26px; }
.hero-card .title { font-weight: 700; margin-top: 6px; }
.hero-card .desc { color: var(--text-dim); font-size: 13px; margin-top: 2px; }

.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-top: 14px;}
.stat { background: #0f1527; border:1px solid var(--border); border-radius: 12px; padding: 12px; text-align:center;}
.stat .val { font-size: 22px; font-weight: 800; }
.stat .lab { color: var(--text-dim); font-size: 12px; }

/* ======== FLASHCARDS ======== */
.flash-wrap { display: flex; flex-direction: column; align-items: center; gap: 14px; }
.flashcard {
  width: 100%; max-width: 520px; height: 280px;
  perspective: 1200px; cursor: pointer;
}
.flashcard-inner {
  position: relative; width: 100%; height: 100%;
  transform-style: preserve-3d; transition: transform .55s cubic-bezier(.2,.7,.2,1);
}
.flashcard.flipped .flashcard-inner { transform: rotateY(180deg); }
.flashcard-face {
  position: absolute; inset: 0; backface-visibility: hidden;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  padding: 20px; text-align: center;
  background: linear-gradient(180deg, #1a2240, #131a31);
  border: 1px solid var(--border); border-radius: 18px;
  box-shadow: var(--shadow);
}
.flashcard-face.back { transform: rotateY(180deg); background: linear-gradient(180deg, #221027, #1a0a1f); }
.flashcard .word { font-size: 42px; font-weight: 800; letter-spacing: -.5px; }
.flashcard .ex { color: var(--text-dim); font-size: 14px; margin-top: 10px; font-style: italic; }
.flashcard .lang { position: absolute; top: 12px; left: 14px; font-size: 12px; color: var(--text-dim); letter-spacing: 2px; }
.flashcard .hint { position: absolute; bottom: 12px; right: 14px; font-size: 11px; color: var(--text-dim); }
.flashcard .mnemo { margin-top: 12px; padding: 8px 12px; background: rgba(255,210,63,0.1); border: 1px solid rgba(255,210,63,0.35); border-radius: 10px; color: #ffd23f; font-size: 14px; max-width: 80%; text-align: center; line-height: 1.35; }
.flash-controls { display: flex; gap: 8px; flex-wrap: wrap; justify-content: center; }
.progress-bar { width: 100%; max-width: 520px; height: 6px; background: #0f1527; border-radius: 99px; overflow:hidden; border: 1px solid var(--border);}
.progress-bar > div { height: 100%; background: linear-gradient(90deg, var(--accent), var(--accent-2)); width: 0%; transition: width .25s ease; }
.chip { background:#0f1527; border:1px solid var(--border); padding: 4px 10px; border-radius: 99px; font-size: 12px; color: var(--text-dim);}

/* ======== WHEEL ======== */
.wheel-stage { display: grid; grid-template-columns: 1.1fr 1fr; gap: 18px;}
@media (max-width: 860px) { .wheel-stage { grid-template-columns: 1fr; } }
.wheel-holder { display: flex; flex-direction: column; align-items: center; gap: 10px; }
.wheel-canvas-wrap { position: relative; width: min(420px, 92vw); aspect-ratio: 1/1; }
.wheel-canvas-wrap canvas { width: 100%; height: 100%; display: block; }
.wheel-pointer {
  position: absolute; top: -4px; left: 50%; transform: translateX(-50%);
  width: 0; height: 0; border-left: 14px solid transparent; border-right: 14px solid transparent;
  border-top: 22px solid var(--accent-2); filter: drop-shadow(0 2px 4px rgba(0,0,0,.4));
}
.wheel-center {
  position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%);
  width: 70px; height: 70px; border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, #fff1a0, var(--accent-2) 60%, #c8a225);
  border: 4px solid #1a1a1a; display:flex; align-items:center; justify-content:center;
  font-weight: 800; color:#111; font-size: 13px; text-align:center;
  box-shadow: inset 0 2px 4px rgba(0,0,0,.25), 0 6px 14px rgba(0,0,0,.4);
  user-select: none;
}
.puzzle {
  display: flex; flex-wrap: wrap; gap: 6px; justify-content: center; margin: 10px 0;
}
.puzzle .letter {
  width: 38px; height: 46px; border-radius: 8px;
  background: #0f1527; border: 1px solid var(--border);
  display:flex; align-items:center; justify-content:center;
  font-weight: 800; font-size: 20px; text-transform: uppercase;
  color: var(--text); font-family: var(--mono);
  transition: background .2s, transform .2s, border-color .2s;
}
.puzzle .letter.space { background: transparent; border-color: transparent; width: 14px; }
.puzzle .letter.revealed { background: linear-gradient(180deg,#2a3561,#1a2240); border-color:#3a4a80; color:#fff; }
.puzzle .letter.flash { animation: flash .5s ease; }
@keyframes flash { 0%{background:#f3c40b;color:#111;} 100%{} }
.kbd {
  display: grid; grid-template-columns: repeat(10, 1fr); gap: 4px;
}
@media (max-width: 500px) { .kbd { grid-template-columns: repeat(7, 1fr); } }
.kbd button {
  padding: 10px 0; font-family: var(--mono); font-weight: 700; font-size: 16px;
  background: #0f1527; color: var(--text); border: 1px solid var(--border);
  border-radius: 8px; cursor: pointer; transition: all .12s;
}
.kbd button:hover:not(:disabled) { background: #202a50; }
.kbd button.good { background: #1b5e34; border-color: #2a7d46; color:#fff;}
.kbd button.bad { background: #542325; border-color: #7a2c2e; color:#fff; opacity:.7;}
.kbd button:disabled { cursor: not-allowed; }
.hint-box {
  background: #0f1527; border:1px solid var(--border); border-radius: 12px;
  padding: 12px 14px; margin-bottom: 10px;
}
.hint-box .cat { font-size: 12px; color: var(--accent-2); text-transform: uppercase; letter-spacing: 1px; font-weight: 700;}
.hint-box .hint { font-size: 16px; color: var(--text); margin-top: 2px; }
.status-line { font-size: 14px; color: var(--text-dim); margin-top: 8px; min-height: 20px;}

/* ======== HANGMAN ======== */
.hangman-stage { display: grid; grid-template-columns: 1fr 1.2fr; gap: 18px; align-items: flex-start;}
@media (max-width: 760px) { .hangman-stage { grid-template-columns: 1fr; } }
.hangman-art {
  background: #0f1527; border:1px solid var(--border); border-radius: 12px;
  padding: 16px; display:flex; flex-direction:column; align-items:center; gap: 10px;
}
.hangman-art svg { width: 100%; max-width: 260px; height: auto; }
.hearts { font-size: 22px; letter-spacing: 4px; }

/* ======== MATCH ======== */
.match-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px;
}
@media (max-width: 640px) { .match-grid { grid-template-columns: repeat(3, 1fr); } }
.match-cell {
  min-height: 84px; padding: 10px;
  background: #0f1527; border: 1px solid var(--border);
  border-radius: 12px; display:flex; align-items:center; justify-content:center;
  text-align:center; font-weight: 700; font-size: 15px;
  cursor: pointer; transition: all .15s ease;
  user-select: none;
}
.match-cell:hover { border-color: #3a4a80; background: #131a31;}
.match-cell.selected { background: linear-gradient(180deg,#2a3561,#1a2240); border-color:#6278c2; box-shadow: 0 0 0 2px rgba(98,120,194,.3);}
.match-cell.matched { background: linear-gradient(180deg,#184d30,#0e3520); border-color: #2a7d46; color: #bff3cd; pointer-events:none;}
.match-cell.wrong { background: linear-gradient(180deg,#5a2323,#3a1616); border-color: #8b3232; }

/* ======== QUIZ ======== */
.quiz-card { max-width: 560px; margin: 0 auto; }
.quiz-q { font-size: 28px; font-weight: 800; text-align:center; padding: 18px 10px; }
.quiz-opts { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
@media (max-width: 520px) { .quiz-opts { grid-template-columns: 1fr; } }
.quiz-opt {
  padding: 14px; text-align:center; font-weight: 600; font-size: 15px;
  background: #0f1527; border: 1px solid var(--border);
  border-radius: 12px; cursor: pointer; transition: all .15s;
}
.quiz-opt:hover { background:#131a31; border-color:#3a4a80; }
.quiz-opt.correct { background: linear-gradient(180deg,#1b5e34,#114225); border-color:#2a7d46; color:#fff; }
.quiz-opt.wrong { background: linear-gradient(180deg,#542325,#3a1616); border-color:#8b3232; color:#fff; }

.toast {
  position: fixed; bottom: 20px; left: 50%; transform: translate(-50%, 20px);
  background: #131a31; color: #fff; padding: 10px 14px; border-radius: 10px;
  border: 1px solid var(--border); font-size: 14px; opacity: 0; pointer-events: none;
  transition: opacity .25s, transform .25s; z-index: 50;
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }

.footer {
  margin-top: 28px; text-align: center; color: var(--text-dim); font-size: 12px;
}

/* ======== AI ======== */
.ai-fab {
  position: fixed; right: 18px; bottom: 18px; z-index: 60;
  width: 56px; height: 56px; border-radius: 50%;
  border: 1px solid var(--border);
  background: radial-gradient(circle at 30% 30%, #ff8792, var(--accent) 60%, #a8252f);
  color: #fff; font-size: 26px; cursor: pointer;
  box-shadow: 0 10px 28px rgba(239,59,71,.35), 0 2px 6px rgba(0,0,0,.4);
  transition: transform .12s ease;
}
.ai-fab:hover { transform: translateY(-2px) scale(1.04); }

.ai-panel {
  position: fixed; right: 18px; bottom: 90px; z-index: 61;
  width: 380px; max-width: calc(100vw - 24px);
  height: 560px; max-height: calc(100vh - 120px);
  display: flex; flex-direction: column;
  background: linear-gradient(180deg, #151c30, #111627);
  border: 1px solid var(--border); border-radius: 16px;
  box-shadow: 0 24px 60px rgba(0,0,0,.5);
  overflow: hidden;
  transition: opacity .18s ease, transform .18s ease;
}
.ai-panel.hidden { opacity: 0; transform: translateY(12px) scale(.98); pointer-events: none; }
.ai-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 12px; border-bottom: 1px solid var(--border);
  background: linear-gradient(180deg, #1a2240, #131a31);
}
.ai-title { font-weight: 700; font-size: 14px; }
.ai-sub { color: var(--text-dim); font-weight: 500; font-size: 11px; margin-left: 6px; }
.ai-actions { display: flex; gap: 4px; }
.ai-btn-mini {
  background: transparent; border: 1px solid var(--border); color: var(--text-dim);
  width: 28px; height: 28px; border-radius: 8px; cursor: pointer; font-size: 13px;
}
.ai-btn-mini:hover { background: var(--panel-2); color: var(--text); }
.ai-log { flex: 1; overflow-y: auto; padding: 12px; display: flex; flex-direction: column; gap: 8px; }
.ai-msg {
  padding: 9px 12px; border-radius: 12px; max-width: 90%;
  font-size: 14px; line-height: 1.45; white-space: pre-wrap; word-wrap: break-word;
  border: 1px solid var(--border);
}
.ai-msg.user { align-self: flex-end; background: linear-gradient(180deg,#2a3561,#1a2240); }
.ai-msg.assistant { align-self: flex-start; background: #0f1527; }
.ai-msg.assistant.streaming::after {
  content: "▊"; display: inline-block; margin-left: 2px; color: var(--accent-2);
  animation: cursor-blink 1s steps(1) infinite;
}
.ai-msg.error { border-color: #7a2c2e; background: #2a1414; color: #ffb3b3; }
@keyframes cursor-blink { 50% { opacity: 0; } }

.ai-quick { display: flex; gap: 6px; flex-wrap: wrap; padding: 0 12px 8px; }
.ai-quick button {
  background: #0f1527; color: var(--text-dim); border: 1px solid var(--border);
  padding: 6px 10px; border-radius: 99px; font-size: 11px; cursor: pointer;
  font-family: inherit;
}
.ai-quick button:hover { background: var(--panel-2); color: var(--text); border-color: #3a4a80; }

.ai-inputwrap {
  display: flex; gap: 6px; padding: 10px; border-top: 1px solid var(--border);
  background: #0e1323;
}
.ai-input {
  flex: 1; resize: none; background: #0f1527; color: var(--text);
  border: 1px solid var(--border); border-radius: 10px; padding: 9px 10px;
  font-family: inherit; font-size: 13px; outline: none;
}
.ai-input:focus { border-color: #3a4a80; }
.ai-send {
  background: linear-gradient(180deg, #f04452, #c7202b);
  color: #fff; border: 1px solid #a8252f;
  width: 42px; border-radius: 10px; cursor: pointer; font-size: 16px;
  font-family: inherit; font-weight: 800;
}
.ai-send:hover { filter: brightness(1.1); }
.ai-send:disabled { opacity: .5; cursor: not-allowed; }

/* Встроенный AI-блок в играх */
.ai-box {
  margin-top: 12px; padding: 12px;
  background: linear-gradient(180deg, rgba(239,59,71,.08), rgba(255,210,63,.05));
  border: 1px solid var(--border); border-radius: 12px;
}
.ai-box-head { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.ai-box-title { color: var(--text-dim); font-size: 12px; }
.ai-box-btn { background: linear-gradient(180deg, #6d3bff, #4a23bd); border-color: #3a1ba0; }
.ai-box-btn:hover { background: linear-gradient(180deg, #7f4eff, #5a2fd0); }
.ai-box-body {
  margin-top: 10px; padding: 10px 12px;
  background: #0f1527; border: 1px solid var(--border); border-radius: 10px;
  font-size: 14px; line-height: 1.5; white-space: pre-wrap;
  min-height: 40px;
}
.ai-box-body.hidden { display: none; }
.ai-box-body.streaming::after {
  content: "▊"; color: var(--accent-2);
  animation: cursor-blink 1s steps(1) infinite;
}
.ai-box-body.error { border-color: #7a2c2e; background: #2a1414; color: #ffb3b3; }

@media (max-width: 480px) {
  .ai-panel { right: 8px; bottom: 80px; width: calc(100vw - 16px); height: 70vh; }
  .ai-fab { right: 10px; bottom: 10px; width: 50px; height: 50px; font-size: 22px; }
}

/* ======== Reasoning (V4) ======== */
.ai-reasoning {
  margin: 6px 0 8px;
  background: rgba(168, 85, 247, 0.06);
  border: 1px solid rgba(168, 85, 247, 0.25);
  border-radius: 10px;
  font-size: 12px;
  color: var(--text-dim);
}
.ai-reasoning summary {
  padding: 6px 10px; cursor: pointer; user-select: none;
  color: #c4a5ff; font-weight: 600;
  list-style: none;
}
.ai-reasoning summary::-webkit-details-marker { display: none; }
.ai-reasoning summary::before { content: "▸ "; transition: transform .15s; }
.ai-reasoning[open] summary::before { content: "▾ "; }
.ai-reasoning-body {
  padding: 2px 12px 10px 22px;
  white-space: pre-wrap;
  line-height: 1.45;
  max-height: 200px; overflow-y: auto;
  font-size: 12px;
}