:root {
    --bg-dark: #050508;
    --neon-pink: #ff007f;
    --neon-blue: #00f2ff;
    --neon-green: #39ff14;
    --neon-purple: #9d00ff;
    --neon-red: #ff3131;
    --text-white: #ffffff;
    --font-game: 'Orbitron', sans-serif;
}

body {
    margin: 0;
    background-color: var(--bg-dark);
    color: var(--text-white);
    font-family: 'Montserrat', sans-serif;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.main-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 20px;
}

h1 {
    font-family: var(--font-game);
    font-size: 2.2rem;
    color: var(--neon-blue);
    text-shadow: 0 0 10px var(--neon-blue);
    margin-bottom: 5px;
    text-align: center;
}

.subtitle { opacity: 0.5; font-size: 0.8rem; letter-spacing: 3px; margin-bottom: 20px; }

/* İstatistik Paneli */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
    width: 100%;
    max-width: 600px;
    margin-bottom: 20px;
}

.stat-box {
    background: rgba(255, 255, 255, 0.03);
    padding: 10px;
    border-radius: 12px;
    text-align: center;
    border-bottom: 2px solid rgba(255,255,255,0.1);
}

.stat-label { font-family: var(--font-game); font-size: 0.6rem; color: var(--neon-purple); display: block; }
.stat-value { font-family: var(--font-game); font-size: 1.1rem; }
.color-green { color: var(--neon-green); }
.color-red { color: var(--neon-red); }

/* Oyun Ekranı */
.game-interface {
    background: #0d0d1a;
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 30px;
    padding: 30px;
    box-shadow: 0 15px 40px rgba(0,0,0,0.9);
    max-width: 600px;
    width: 100%;
    text-align: center;
}

.visualizer-container { height: 120px; display: flex; justify-content: center; align-items: center; }

#rhythm-core {
    width: 80px; height: 80px; border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    border: 4px solid rgba(255,255,255,0.1);
    transition: 0.2s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    font-family: var(--font-game); font-size: 0.7rem;
}

.core-listening { border-color: var(--neon-green) !important; box-shadow: 0 0 20px var(--neon-green); }
.core-playing { border-color: var(--neon-pink) !important; box-shadow: 0 0 20px var(--neon-pink); }

/* Tuşlar */
.pads-container { display: flex; justify-content: center; gap: 15px; margin-top: 20px; }

.rhythm-pad {
    width: 100px; height: 100px; border-radius: 18px; border: none;
    font-family: var(--font-game); font-size: 1rem; cursor: pointer;
    background: #151525; color: white; transition: 0.1s;
    box-shadow: 0 5px 0 #000;
}

.pad-dum { border-top: 2px solid var(--neon-pink); }
.pad-tek { border-top: 2px solid var(--neon-blue); }
.pad-ka { border-top: 2px solid var(--neon-green); }
.pad-active { transform: translateY(3px); box-shadow: 0 2px 0 #000; filter: brightness(1.6); }

.key-hint { display: block; margin-top: 5px; font-size: 0.6rem; opacity: 0.4; }

.glow-button {
    margin-top: 25px; padding: 15px 40px; border-radius: 50px;
    border: 2px solid var(--neon-purple); background: transparent;
    color: var(--neon-purple); font-family: var(--font-game); cursor: pointer; transition: 0.3s;
    font-weight: bold;
}

.glow-button:hover { background: var(--neon-purple); color: #fff; box-shadow: 0 0 15px var(--neon-purple); }

/* Yönerge */
.instructions-container {
    background: rgba(255, 255, 255, 0.02);
    border-radius: 15px;
    padding: 20px;
    margin-top: 20px;
    max-width: 600px;
    width: 100%;
    border: 1px dashed rgba(255, 255, 255, 0.1);
}

.instructions-container h3 { color: var(--neon-blue); font-family: var(--font-game); font-size: 0.9rem; margin-top: 0; }
.rules-grid { font-size: 0.75rem; color: rgba(255,255,255,0.7); text-align: left; }
.rule-item { margin-bottom: 8px; line-height: 1.4; border-left: 2px solid var(--neon-purple); padding-left: 10px; }

footer { text-align: center; padding: 25px; margin-top: auto; border-top: 1px solid rgba(255,255,255,0.05); }
.footer-link { color: var(--neon-blue); text-decoration: none; font-family: var(--font-game); font-size: 0.8rem; font-weight: bold; }
.footer-sub { font-size: 0.75rem; margin-top: 8px; opacity: 0.5; }

@media (max-width: 500px) {
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .rhythm-pad { width: 80px; height: 80px; font-size: 0.8rem; }
}