body {
    background-color: #080808;
    color: #00ff41; /* 蛍光グリーン */
    font-family: 'Zen Old Mincho', serif;
    overflow-x: hidden;
}

.font-mono {
    font-family: 'Share Tech Mono', monospace;
}

/* 砂嵐ノイズ背景 */
.noise-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -1;
    opacity: 0.08;
    pointer-events: none;
    background: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='1.5' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)' opacity='1'/%3E%3C/svg%3E");
    animation: noise-anim 0.2s infinite;
}

@keyframes noise-anim {
    0% { transform: translate(0, 0); }
    10% { transform: translate(-5%, -5%); }
    20% { transform: translate(-10%, 5%); }
    30% { transform: translate(5%, -10%); }
    40% { transform: translate(-5%, 15%); }
    50% { transform: translate(-10%, 5%); }
    60% { transform: translate(15%, 0); }
    70% { transform: translate(0, 10%); }
    80% { transform: translate(-15%, 0); }
    90% { transform: translate(10%, 5%); }
    100% { transform: translate(5%, 0); }
}

/* グリッチテキスト */
.glitch {
    position: relative;
}
.glitch::before, .glitch::after {
    content: attr(data-text);
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: #080808;
}
.glitch::before {
    left: 2px;
    text-shadow: -1px 0 #ff00c1;
    clip: rect(44px, 450px, 56px, 0);
    animation: glitch-anim 5s infinite linear alternate-reverse;
}
.glitch::after {
    left: -2px;
    text-shadow: -1px 0 #00fff9;
    clip: rect(44px, 450px, 56px, 0);
    animation: glitch-anim2 5s infinite linear alternate-reverse;
}

@keyframes glitch-anim {
    0% { clip: rect(2px, 9999px, 5px, 0); }
    5% { clip: rect(40px, 9999px, 45px, 0); }
    100% { clip: rect(10px, 9999px, 80px, 0); }
}
@keyframes glitch-anim2 {
    0% { clip: rect(80px, 9999px, 85px, 0); }
    5% { clip: rect(10px, 9999px, 20px, 0); }
    100% { clip: rect(20px, 9999px, 60px, 0); }
}

/* 波形アニメーション（CSS） */
.waveform-bar {
    width: 4px;
    background-color: #00ff41;
    animation: wave 1s ease-in-out infinite;
}
@keyframes wave {
    0%, 100% { height: 10%; opacity: 0.3; }
    50% { height: 100%; opacity: 1; }
}

/* スキャンライン */
.scanline {
    width: 100%;
    height: 2px;
    background: rgba(0, 255, 65, 0.3);
    position: fixed;
    top: 0;
    left: 0;
    z-index: 50;
    animation: scan 3s linear infinite;
    pointer-events: none;
}
@keyframes scan {
    0% { top: -10%; }
    100% { top: 110%; }
}