* { box-sizing: border-box; }
body {
    font-family: 'Segoe UI', system-ui, sans-serif;
    margin: 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    color: #1a1a2e;
    transition: all 0.3s;
}
body.dark {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
    color: #fff;
}
.game-container {
    background: rgba(255,255,255,0.95);
    padding: 35px 45px;
    border-radius: 20px;
    box-shadow: 0 15px 50px rgba(0,0,0,0.3);
    text-align: center;
    max-width: 450px;
    width: 90%;
    transition: all 0.3s;
}
body.dark .game-container {
    background: rgba(255,255,255,0.05);
    backdrop-filter: blur(10px);
}
h1 { margin: 0 0 5px; font-size: 2em; color: #667eea; }
body.dark h1 { color: #a78bfa; }
.subtitle { color: #666; margin: 0 0 20px; font-size: 0.9em; }
body.dark .subtitle { color: #a0aec0; }
#scrambled {
    font-size: 2.8em;
    font-weight: bold;
    letter-spacing: 10px;
    margin: 25px 0;
    color: #667eea;
    min-height: 70px;
    transition: all 0.3s;
}
body.dark #scrambled { color: #a78bfa; text-shadow: 0 0 20px rgba(167,139,250,0.3); }
#guess {
    width: 100%;
    padding: 15px;
    font-size: 1.2em;
    border: 2px solid #667eea;
    border-radius: 10px;
    background: #fff;
    color: #1a1a2e;
    text-align: center;
    text-transform: uppercase;
    letter-spacing: 3px;
    outline: none;
    transition: all 0.2s;
}
body.dark #guess {
    background: rgba(0,0,0,0.3);
    color: #fff;
    border-color: #a78bfa;
}
#guess:focus { border-color: #764ba2; box-shadow: 0 0 10px rgba(102,126,234,0.3); }
body.dark #guess:focus { border-color: #c4b5fd; }
#guess::placeholder { color: #999; text-transform: none; letter-spacing: normal; }
body.dark #guess::placeholder { color: #718096; }
.btn-row { display: flex; gap: 10px; justify-content: center; margin: 15px 0; }
.btn {
    padding: 12px 24px;
    font-size: 1em;
    background: #667eea;
    color: #fff;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s;
}
.btn:hover { background: #764ba2; transform: translateY(-2px); }
.btn.primary { background: #764ba2; }
.btn.primary:hover { background: #5b21b6; }
.btn.small { padding: 8px 16px; font-size: 0.9em; }
body.dark .btn { background: #4a5568; }
body.dark .btn:hover { background: #5a6578; }
body.dark .btn.primary { background: #a78bfa; color: #1a1a2e; }
body.dark .btn.primary:hover { background: #c4b5fd; }
#message {
    min-height: 30px;
    font-size: 1.2em;
    font-weight: bold;
    margin: 15px 0;
}
#message.correct { color: #10b981; animation: pop 0.4s; }
#message.wrong { color: #ef4444; animation: shake 0.4s; }
.stats {
    display: flex;
    justify-content: space-around;
    margin: 20px 0;
    padding: 15px;
    background: rgba(102,126,234,0.1);
    border-radius: 10px;
}
body.dark .stats { background: rgba(0,0,0,0.2); }
.stat { text-align: center; }
.stat .label { display: block; font-size: 0.8em; color: #666; }
body.dark .stat .label { color: #a0aec0; }
.stat .value { display: block; font-size: 1.5em; font-weight: bold; }
.stat .streak { color: #f59e0b; }
.controls { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; }
select {
    padding: 8px 16px;
    font-size: 0.9em;
    background: #667eea;
    color: #fff;
    border: none;
    border-radius: 8px;
    cursor: pointer;
}
body.dark select { background: #4a5568; }
.music-controls {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: rgba(255,255,255,0.95);
    padding: 12px;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
    font-size: 0.85em;
}
body.dark .music-controls { background: rgba(45,55,72,0.95); }
.music-controls button {
    padding: 6px 12px;
    margin: 2px;
    background: #667eea;
    color: #fff;
    border: none;
    border-radius: 5px;
    cursor: pointer;
}
body.dark .music-controls button { background: #4a5568; }
.music-controls button:hover { background: #764ba2; }
body.dark .music-controls button:hover { background: #5a6578; }
.music-controls .song-name { color: #666; margin-top: 6px; font-size: 0.85em; }
body.dark .music-controls .song-name { color: #a0aec0; }
@keyframes pop { 50% { transform: scale(1.1); } }
@keyframes shake { 25%,75% { transform: translateX(-5px); } 50% { transform: translateX(5px); } }