:root {
    --color-bg: #0A0A0A;
    --color-midnight: #001F3F;
    --color-purple: #2A0A2A;
    --color-neon-blue: #00FFFF;
    --color-neon-pink: #FF00FF;
    --color-neon-green: #39FF14;
    --color-text: #E0E0E0;
    --font-main: 'Orbitron', sans-serif;
    --font-body: 'Roboto Mono', monospace;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background-color: var(--color-bg);
    color: var(--color-text);
    font-family: var(--font-body);
    overflow-x: hidden;
    line-height: 1.6;
}

/* ローディングアニメーション */
#loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--color-bg);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    transition: opacity 0.5s ease-out;
}

#loader.hidden {
    opacity: 0;
    pointer-events: none;
}

.loader-text {
    font-family: var(--font-main);
    color: var(--color-neon-blue);
    font-size: 1.5rem;
    margin-bottom: 20px;
    animation: blink 1s infinite;
}

.loader-bar {
    width: 200px;
    height: 3px;
    background: var(--color-neon-blue);
    animation: load 2s forwards;
}

@keyframes load {
    0% { width: 0; }
    100% { width: 200px; }
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* パーティクル背景 */
#particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

.container {
    position: relative;
    z-index: 1;
}

/* ナビゲーション */
.cyber-nav {
    position: fixed;
    top: 0;
    width: 100%;
    padding: 20px 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(10, 10, 10, 0.8);
    backdrop-filter: blur(5px);
    z-index: 1000;
    border-bottom: 1px solid rgba(0, 255, 255, 0.2);
}

.logo {
    font-family: var(--font-main);
    font-size: 1.5rem;
    color: var(--color-neon-blue);
    text-shadow: 0 0 10px var(--color-neon-blue);
}

.nav-links a {
    color: var(--color-text);
    text-decoration: none;
    margin-left: 30px;
    font-family: var(--font-main);
    font-size: 0.9rem;
    transition: color 0.3s, text-shadow 0.3s;
}

.nav-links a:hover {
    color: var(--color-neon-pink);
    text-shadow: 0 0 10px var(--color-neon-pink);
}

.nav-cta {
    border: 1px solid var(--color-neon-green);
    padding: 5px 15px;
    color: var(--color-neon-green) !important;
}

/* セクション共通 */
.section {
    min-height: 100vh;
    padding: 120px 40px 40px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    position: relative;
}

/* ヒーローセクション */
#hero {
    text-align: center;
    background: radial-gradient(ellipse at center, rgba(0,31,63,0.5) 0%, rgba(10,10,10,1) 70%);
}

.hero-content h1 {
    font-family: var(--font-main);
    font-size: 4rem;
    font-weight: 900;
    margin-bottom: 20px;
    color: #FFFFFF;
    text-shadow: 0 0 10px #FFFFFF, 0 0 20px var(--color-neon-blue), 0 0 30px var(--color-neon-blue);
}

.sub-copy {
    font-size: 1.2rem;
    margin-bottom: 40px;
    color: var(--color-text);
    opacity: 0.8;
}

/* グリッチエフェクト */
.glitch {
    position: relative;
    animation: glitch-anim 5s infinite linear alternate-reverse;
}

.glitch::before,
.glitch::after {
    content: attr(data-text);
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.glitch::before {
    left: 2px;
    text-shadow: -2px 0 var(--color-neon-pink);
    clip: rect(44px, 450px, 56px, 0);
    animation: glitch-anim-1 5s infinite linear alternate-reverse;
}

.glitch::after {
    left: -2px;
    text-shadow: -2px 0 var(--color-neon-blue);
    clip: rect(44px, 450px, 56px, 0);
    animation: glitch-anim-2 5s infinite linear alternate-reverse;
}

@keyframes glitch-anim-1 {
    0% { clip: rect(31px, 9999px, 94px, 0); }
    5% { clip: rect(112px, 9999px, 76px, 0); }
    10% { clip: rect(85px, 9999px, 77px, 0); }
    15% { clip: rect(27px, 9999px, 97px, 0); }
    20% { clip: rect(64px, 9999px, 98px, 0); }
    100% { clip: rect(1px, 9999px, 100px, 0); }
}

@keyframes glitch-anim-2 {
    0% { clip: rect(65px, 9999px, 100px, 0); }
    5% { clip: rect(52px, 9999px, 74px, 0); }
    10% { clip: rect(79px, 9999px, 85px, 0); }
    15% { clip: rect(75px, 9999px, 5px, 0); }
    20% { clip: rect(46px, 9999px, 87px, 0); }
    100% { clip: rect(40px, 9999px, 66px, 0); }
}

/* CTAボタン */
.cta-button {
    display: inline-block;
    padding: 15px 40px;
    font-family: var(--font-main);
    font-size: 1.2rem;
    color: var(--color-neon-green);
    border: 2px solid var(--color-neon-green);
    text-decoration: none;
    text-transform: uppercase;
    position: relative;
    overflow: hidden;
    transition: 0.3s;
}

.cta-button:hover {
    background: var(--color-neon-green);
    color: var(--color-bg);
    box-shadow: 0 0 20px var(--color-neon-green);
}

.pulse {
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(57, 255, 20, 0.7); }
    70% { box-shadow: 0 0 0 10px rgba(57, 255, 20, 0); }
    100% { box-shadow: 0 0 0 0 rgba(57, 255, 20, 0); }
}

/* スクロールインジケーター */
.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
    font-family: var(--font-main);
    font-size: 0.8rem;
    color: var(--color-neon-blue);
}

.scroll-line {
    width: 1px;
    height: 50px;
    background: var(--color-neon-blue);
    margin: 10px auto 0;
    animation: scroll 2s infinite;
}

@keyframes scroll {
    0% { transform: translateY(0); opacity: 1; }
    100% { transform: translateY(20px); opacity: 0; }
}

/* セクション見出し */
.section-header h2 {
    font-family: var(--font-main);
    font-size: 2.5rem;
    color: #FFFFFF;
    margin-bottom: 60px;
    text-shadow: 0 0 5px #FFFFFF;
}

/* コンテンツグリッド */
.content-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
}

.text-block p {
    font-size: 1.1rem;
    line-height: 1.8;
    border-left: 3px solid var(--color-neon-pink);
    padding-left: 20px;
}

/* HUD要素 */
.hud-element {
    position: relative;
    width: 100%;
    height: 300px;
    border: 1px solid rgba(0, 255, 255, 0.5);
    background: rgba(0, 31, 63, 0.2);
}

.hud-corner {
    position: absolute;
    width: 20px;
    height: 20px;
    border-color: var(--color-neon-blue);
    border-style: solid;
}

.top-left { top: -2px; left: -2px; border-width: 2px 0 0 2px; }
.top-right { top: -2px; right: -2px; border-width: 2px 2px 0 0; }
.bottom-left { bottom: -2px; left: -2px; border-width: 0 0 2px 2px; }
.bottom-right { bottom: -2px; right: -2px; border-width: 0 2px 2px 0; }

.data-stream {
    position: absolute;
    bottom: 20px;
    left: 20px;
    font-family: var(--font-body);
    font-size: 0.9rem;
    color: var(--color-neon-green);
    display: flex;
    flex-direction: column;
    gap: 5px;
}

/* 特徴カード */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.feature-card {
    background: rgba(42, 10, 42, 0.5);
    border: 1px solid rgba(255, 0, 255, 0.3);
    padding: 30px;
    transition: 0.3s;
}

.feature-card:hover {
    transform: translateY(-10px);
    border-color: var(--color-neon-pink);
    box-shadow: 0 10px 20px rgba(255, 0, 255, 0.2);
}

.feature-icon {
    font-family: var(--font-main);
    font-size: 2rem;
    color: var(--color-neon-blue);
    margin-bottom: 20px;
}

.feature-card h3 {
    font-family: var(--font-main);
    color: #FFFFFF;
    margin-bottom: 15px;
    font-size: 1.2rem;
}

/* テックダイアグラム */
.tech-diagram {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
}

.node {
    padding: 20px 40px;
    border: 2px solid var(--color-neon-blue);
    font-family: var(--font-main);
    color: var(--color-neon-blue);
    text-align: center;
    position: relative;
}

.main-node {
    background: rgba(0, 255, 255, 0.1);
    font-size: 1.5rem;
}

.connector {
    width: 50px;
    height: 2px;
    background: var(--color-neon-blue);
    position: relative;
}

.connector::after {
    content: '';
    position: absolute;
    right: -5px;
    top: -4px;
    width: 10px;
    height: 10px;
    border-right: 2px solid var(--color-neon-blue);
    border-top: 2px solid var(--color-neon-blue);
    transform: rotate(45deg);
}

/* CTAセクション */
#contact {
    text-align: center;
    background: radial-gradient(ellipse at center, rgba(42,10,42,0.5) 0%, rgba(10,10,10,1) 70%);
}

.cta-content h2 {
    font-size: 3rem;
    margin-bottom: 20px;
}

.countdown {
    margin-top: 40px;
    font-family: var(--font-main);
    font-size: 1.5rem;
    color: var(--color-neon-pink);
    animation: blink 1s infinite;
}

/* フッター */
.cyber-footer {
    padding: 40px;
    text-align: center;
    border-top: 1px solid rgba(0, 255, 255, 0.2);
    background: rgba(10, 10, 10, 0.9);
}

.footer-links {
    margin-bottom: 20px;
}

.footer-links a {
    color: var(--color-text);
    text-decoration: none;
    margin: 0 15px;
    font-family: var(--font-main);
    font-size: 0.8rem;
    transition: color 0.3s;
}

.footer-links a:hover {
    color: var(--color-neon-blue);
}

.copyright {
    font-size: 0.8rem;
    opacity: 0.6;
}

/* レスポンシブ */
@media (max-width: 768px) {
    .hero-content h1 {
        font-size: 2.5rem;
    }

    .content-grid {
        grid-template-columns: 1fr;
    }

    .cyber-nav {
        padding: 15px 20px;
    }

    .nav-links a {
        margin-left: 15px;
        font-size: 0.8rem;
    }

    .section {
        padding: 100px 20px 20px;
    }
}