/* リセットCSS */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* CSS変数 */
:root {
    --primary-color: #6366f1;
    --secondary-color: #8b5cf6;
    --accent-color: #f59e0b;
    --dark-bg: #0f172a;
    --light-bg: #1e293b;
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    --gradient-dark: linear-gradient(180deg, #0f172a 0%, #1e293b 100%);
    --transition-fast: 0.3s ease;
    --transition-normal: 0.5s ease;
    --transition-slow: 0.8s ease;
}

/* ベーススタイル */
body {
    font-family: 'Noto Sans JP', sans-serif;
    background-color: var(--dark-bg);
    color: var(--text-primary);
    overflow-x: hidden;
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ローディング画面 */
.loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: var(--dark-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.8s ease;
}

.loading-screen.fade-out {
    opacity: 0;
    pointer-events: none;
}

.loading-content {
    text-align: center;
}

.loading-clock {
    width: 100px;
    height: 100px;
    border: 3px solid var(--primary-color);
    border-radius: 50%;
    position: relative;
    margin: 0 auto 20px;
    animation: pulse 2s infinite;
}

.clock-hand {
    position: absolute;
    background: var(--accent-color);
    transform-origin: bottom center;
    bottom: 50%;
    left: 50%;
    transform: translateX(-50%);
}

.hour-hand {
    width: 3px;
    height: 30px;
    animation: rotate-fast 2s linear infinite;
}

.minute-hand {
    width: 2px;
    height: 40px;
    animation: rotate-faster 0.5s linear infinite;
}

@keyframes rotate-fast {
    from { transform: translateX(-50%) rotate(0deg); }
    to { transform: translateX(-50%) rotate(360deg); }
}

@keyframes rotate-faster {
    from { transform: translateX(-50%) rotate(0deg); }
    to { transform: translateX(-50%) rotate(360deg); }
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.1); opacity: 0.8; }
}

.loading-text {
    color: var(--text-secondary);
    font-size: 18px;
    animation: fade-pulse 1.5s infinite;
}

@keyframes fade-pulse {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 1; }
}

/* ヒーローセクション */
.hero {
    position: relative;
    height: 100vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

.hero-bg-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: brightness(0.4);
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(180deg, rgba(15,23,42,0.4) 0%, rgba(15,23,42,0.8) 100%);
}

.particle-effect {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(2px 2px at 20% 30%, white, transparent),
        radial-gradient(2px 2px at 60% 70%, white, transparent),
        radial-gradient(1px 1px at 90% 10%, white, transparent);
    background-size: 50% 50%;
    animation: float 20s infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    33% { transform: translateY(-20px) rotate(1deg); }
    66% { transform: translateY(20px) rotate(-1deg); }
}

.hero-content {
    text-align: center;
    z-index: 1;
    animation: fadeInUp 1s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 900;
    margin-bottom: 20px;
    line-height: 1.2;
}

.title-line {
    display: block;
    margin: 10px 0;
}

.title-line.emphasis {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-fill-color: transparent;
    font-size: 1.2em;
}

.hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--text-secondary);
    margin-bottom: 40px;
    line-height: 1.8;
}

.countdown-timer {
    display: flex;
    gap: 30px;
    justify-content: center;
    margin: 40px 0;
}

.timer-digit {
    text-align: center;
}

.timer-digit .digit {
    display: block;
    font-size: 3rem;
    font-weight: 700;
    color: var(--accent-color);
    text-shadow: 0 0 20px rgba(245, 158, 11, 0.5);
}

.timer-digit .label {
    display: block;
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-top: 5px;
}

.cta-button {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 18px 40px;
    font-size: 1.125rem;
    font-weight: 700;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
    color: #ffffff;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.8);
}

.cta-button.primary {
    background: var(--gradient-primary);
    box-shadow: 0 10px 30px rgba(99, 102, 241, 0.3);
    border: 2px solid rgba(255, 255, 255, 0.9);
}

.cta-button.primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 40px rgba(99, 102, 241, 0.4);
    border: 2px solid #ffffff;
}

.button-icon {
    display: inline-block;
    transition: transform var(--transition-fast);
}

.cta-button:hover .button-icon {
    transform: translateX(5px);
}

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s infinite;
}

.scroll-arrow {
    width: 30px;
    height: 30px;
    border-right: 2px solid var(--text-secondary);
    border-bottom: 2px solid var(--text-secondary);
    transform: rotate(45deg);
    opacity: 0.7;
}

@keyframes bounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(10px); }
}

/* セクション共通スタイル */
section {
    padding: 100px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 60px;
}

.title-en {
    display: block;
    font-size: 0.875rem;
    letter-spacing: 0.2em;
    color: var(--primary-color);
    margin-bottom: 10px;
    text-transform: uppercase;
}

.title-ja {
    display: block;
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
}

/* コンセプトセクション */
.concept {
    background: var(--light-bg);
}

.concept-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.concept-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    padding: 40px;
    text-align: center;
    transition: all var(--transition-normal);
}

.concept-card:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.08);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.card-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.card-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    filter: drop-shadow(0 0 20px rgba(99, 102, 241, 0.5));
}

.card-title {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--accent-color);
}

.card-text {
    color: var(--text-secondary);
    line-height: 1.8;
}

/* 機能セクション */
.features {
    background: var(--dark-bg);
    position: relative;
    overflow: hidden;
}

.features::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--primary-color), transparent);
}

.feature-showcase {
    margin-bottom: 60px;
}

.feature-item {
    display: none;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.feature-item.active {
    display: grid;
    animation: fadeIn 0.8s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateX(-20px); }
    to { opacity: 1; transform: translateX(0); }
}

.feature-title {
    font-size: 2rem;
    margin-bottom: 20px;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.feature-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 30px;
    line-height: 1.8;
}

.feature-list {
    list-style: none;
}

.feature-list li {
    padding: 10px 0;
    padding-left: 30px;
    position: relative;
    color: var(--text-secondary);
}

.feature-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--accent-color);
    font-weight: bold;
}

.feature-visual {
    position: relative;
}

.feature-visual img {
    width: 100%;
    height: auto;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.feature-nav {
    display: flex;
    justify-content: center;
    gap: 20px;
}

.feature-nav-item {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    padding: 20px 30px;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    gap: 15px;
    color: var(--text-secondary);
}

.feature-nav-item:hover,
.feature-nav-item.active {
    background: var(--gradient-primary);
    color: white;
    transform: translateY(-2px);
}

.nav-number {
    font-size: 0.875rem;
    opacity: 0.7;
}

.nav-title {
    font-weight: 600;
}

/* 実証セクション */
.proof {
    background: var(--light-bg);
}

.proof-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    margin-bottom: 60px;
}

.proof-card {
    text-align: center;
    padding: 30px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.proof-number {
    font-size: 3rem;
    font-weight: 900;
    color: var(--accent-color);
    display: inline-block;
}

.proof-unit {
    font-size: 1.5rem;
    color: var(--text-secondary);
    margin-left: 5px;
    display: inline-block;
}

.proof-label {
    margin-top: 10px;
    color: var(--text-secondary);
}

.graph-container {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 20px;
    padding: 40px;
}

.graph-title {
    font-size: 1.5rem;
    margin-bottom: 30px;
    text-align: center;
}

.comparison-graph {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.graph-bar {
    position: relative;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    height: 60px;
    overflow: hidden;
}

.bar-fill {
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    border-radius: 10px;
    transition: width 2s ease-out;
}

.traditional .bar-fill {
    width: 100%;
    background: linear-gradient(135deg, #64748b 0%, #94a3b8 100%);
    border: 1px solid rgba(0, 0, 0, 0.3);
}

.speed-sleep .bar-fill {
    width: 10%;
    background: var(--gradient-primary);
}

.bar-label {
    position: absolute;
    left: 20px;
    top: 50%;
    transform: translateY(-50%);
    font-weight: 700;
    z-index: 1;
    color: #ffffff;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.9);
}

/* 料金プラン */
.pricing {
    background: var(--dark-bg);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
    max-width: 1000px;
    margin: 0 auto;
}

.pricing-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    padding: 40px;
    text-align: center;
    position: relative;
    transition: all var(--transition-normal);
}

.pricing-card:hover {
    transform: translateY(-5px);
}

.pricing-card.featured {
    border-color: var(--primary-color);
    transform: scale(1.05);
}

.featured-badge {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--gradient-primary);
    padding: 5px 20px;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 600;
}

.plan-name {
    font-size: 1.5rem;
    margin-bottom: 20px;
}

.plan-price {
    margin-bottom: 30px;
}

.currency {
    font-size: 1.5rem;
    color: var(--text-secondary);
}

.amount {
    font-size: 3rem;
    font-weight: 900;
    color: var(--accent-color);
}

.period {
    font-size: 1rem;
    color: var(--text-secondary);
}

.plan-features {
    list-style: none;
    margin-bottom: 30px;
}

.plan-features li {
    padding: 10px 0;
    color: var(--text-secondary);
}

.plan-button {
    width: 100%;
    padding: 15px 30px;
    border: 2px solid rgba(255, 255, 255, 0.2);
    background: transparent;
    color: white;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.plan-button:hover {
    background: rgba(255, 255, 255, 0.1);
}

.plan-button.primary {
    background: var(--gradient-primary);
    border: none;
}

.plan-button.primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(99, 102, 241, 0.3);
}

/* CTAセクション */
.cta-section {
    background: var(--light-bg);
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.1) 0%, transparent 70%);
    animation: rotate-slow 30s linear infinite;
}

@keyframes rotate-slow {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.cta-content {
    text-align: center;
    position: relative;
    z-index: 1;
}

.cta-title {
    font-size: clamp(2rem, 5vw, 3.5rem);
    margin-bottom: 20px;
}

.highlight {
    color: var(--accent-color);
    text-shadow: 0 0 30px rgba(245, 158, 11, 0.5);
}

.cta-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 40px;
}

.cta-timer {
    display: inline-block;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    padding: 20px 40px;
    margin-bottom: 40px;
}

.timer-label {
    display: block;
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 10px;
}

.timer-display {
    font-size: 2rem;
    font-weight: 700;
    font-variant-numeric: tabular-nums;
    color: var(--accent-color);
}

.cta-button.large {
    font-size: 1.25rem;
    padding: 20px 60px;
    color: #000000;
    text-shadow: 0 1px 2px rgba(255, 255, 255, 0.3);
    background: linear-gradient(135deg, #f59e0b 0%, #fbbf24 100%);
    border: 3px solid #000000;
    font-weight: 900;
}

.cta-button.large:hover {
    background: linear-gradient(135deg, #fbbf24 0%, #f59e0b 100%);
    transform: translateY(-3px);
    box-shadow: 0 20px 40px rgba(245, 158, 11, 0.4);
    border: 3px solid #1f2937;
}

/* フッター */
.footer {
    background: var(--dark-bg);
    padding: 60px 0 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 60px;
    margin-bottom: 40px;
}

.footer-logo {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.footer-tagline {
    color: var(--text-secondary);
}

.footer-links {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}

.link-list {
    list-style: none;
}

.link-list li {
    margin-bottom: 15px;
}

.link-list a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.link-list a:hover {
    color: var(--primary-color);
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.copyright {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* レスポンシブデザイン */
@media (max-width: 768px) {
    .feature-item {
        grid-template-columns: 1fr;
    }
    
    .feature-visual {
        order: -1;
    }
    
    .pricing-card.featured {
        transform: scale(1);
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
    }
}