/* Variables */
:root {
    --bg-color: #0a0a0a;
    --bg-secondary: #111827;
    --text-primary: #ffffff;
    --text-secondary: #94a3b8;
    --accent-primary: #3b82f6; /* Neon Blue */
    --accent-secondary: #06b6d4; /* Cyan */
    --accent-glow: rgba(59, 130, 246, 0.5);
    --gradient-main: linear-gradient(135deg, #3b82f6 0%, #06b6d4 100%);
    --font-heading: 'Noto Sans JP', sans-serif;
    --font-body: 'Inter', 'Noto Sans JP', sans-serif;
    --spacing-container: 1200px;
    --spacing-section: 100px;
}

/* Reset & Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

a {
    text-decoration: none;
    color: inherit;
    transition: opacity 0.3s;
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    display: block;
}

/* Typography */
h1, h2, h3, h4 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
}

.text-gradient {
    background: var(--gradient-main);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
}

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

/* Layout Utilities */
.container {
    max-width: var(--spacing-container);
    margin: 0 auto;
    padding: 0 20px;
}

section {
    padding: var(--spacing-section) 0;
}

/* Components */
.btn {
    display: inline-block;
    padding: 12px 32px;
    border-radius: 50px;
    font-weight: 700;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
    text-align: center;
}

.btn-primary {
    background: var(--gradient-main);
    color: white;
    box-shadow: 0 4px 15px var(--accent-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px var(--accent-glow);
}

.btn-sm { padding: 8px 20px; font-size: 0.9rem; }
.btn-lg { padding: 16px 48px; font-size: 1.2rem; }
.btn-full { width: 100%; }

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 20px 0;
    background: rgba(10, 10, 10, 0.8);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 900;
    letter-spacing: 1px;
    background: var(--gradient-main);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav {
    display: flex;
    align-items: center;
    gap: 30px;
}

.nav-link {
    font-weight: 600;
    font-size: 0.9rem;
}

.nav-link:hover {
    color: var(--accent-primary);
}

/* Hero Section */
.hero {
    padding-top: 180px;
    padding-bottom: 100px;
    position: relative;
    overflow: hidden;
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.hero-title {
    font-size: 4rem;
    margin-bottom: 20px;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 40px;
}

.hero-note {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-top: 10px;
}

.hero-image {
    position: relative;
    z-index: 1;
}

.mockup-placeholder {
    width: 100%;
    max-width: 350px;
    margin: 0 auto;
    border-radius: 40px;
    overflow: hidden;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
    border: 8px solid #222;
    background: #000;
    aspect-ratio: 9/19.5;
    position: relative;
}

.mockup-placeholder img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-bg-glow {
    position: absolute;
    top: 50%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: var(--accent-primary);
    filter: blur(150px);
    opacity: 0.2;
    z-index: 0;
    border-radius: 50%;
    transform: translateY(-50%);
}

/* Problem Section */
.problem {
    background: var(--bg-secondary);
}

.problem-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 60px;
}

.problem-card {
    background: rgba(255, 255, 255, 0.03);
    padding: 40px 30px;
    border-radius: 20px;
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: transform 0.3s;
}

.problem-card:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.05);
}

.icon-box {
    font-size: 2.5rem;
    color: var(--text-secondary);
    margin-bottom: 20px;
}

.problem-card h3 {
    margin-bottom: 15px;
    font-size: 1.2rem;
}

.problem-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Solution Section */
.section-header {
    margin-bottom: 80px;
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.section-subtitle {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

.feature-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
    margin-bottom: 120px;
}

.feature-row.reverse {
    direction: rtl;
}

.feature-row.reverse .feature-text {
    direction: ltr;
}

.feature-icon {
    font-size: 2rem;
    color: var(--accent-primary);
    margin-bottom: 20px;
    width: 60px;
    height: 60px;
    background: rgba(59, 130, 246, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 15px;
}

.feature-text h3 {
    font-size: 1.8rem;
    margin-bottom: 20px;
}

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

/* Features Grid */
.features-grid-section {
    background: var(--bg-secondary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-top: 60px;
}

.feature-card {
    background: var(--bg-color);
    padding: 30px;
    border-radius: 15px;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.feature-card h4 {
    margin-bottom: 10px;
    color: var(--accent-secondary);
}

.feature-card p {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* Reviews */
.reviews-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 60px;
}

.review-card {
    background: rgba(255, 255, 255, 0.03);
    padding: 30px;
    border-radius: 20px;
}

.review-header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 20px;
}

.review-avatar {
    width: 50px;
    height: 50px;
    background: #333;
    border-radius: 50%;
}

.review-meta {
    display: flex;
    flex-direction: column;
}

.review-meta .name {
    font-weight: 700;
    font-size: 0.9rem;
}

.review-meta .role {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.review-text {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-style: italic;
}

/* Benefit */
.benefit {
    position: relative;
    height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    overflow: hidden;
}

.benefit-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(rgba(10, 10, 10, 0.7), rgba(10, 10, 10, 0.9)), url('assets/lifestyle_image.png');
    background-size: cover;
    background-position: center;
    z-index: 0;
}

.benefit-content {
    position: relative;
    z-index: 1;
}

/* Pricing */
.pricing-card {
    max-width: 400px;
    margin: 60px auto 0;
    background: var(--bg-secondary);
    padding: 50px;
    border-radius: 30px;
    border: 1px solid rgba(59, 130, 246, 0.3);
    box-shadow: 0 0 30px rgba(59, 130, 246, 0.1);
    text-align: center;
}

.pricing-header h3 {
    font-size: 1.5rem;
    margin-bottom: 10px;
}

.pricing-header .price {
    font-size: 3rem;
    font-weight: 900;
    color: var(--accent-primary);
    margin-bottom: 30px;
}

.pricing-features {
    margin-bottom: 40px;
    text-align: left;
}

.pricing-features li {
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.pricing-features i {
    color: var(--accent-secondary);
}

.pricing-note {
    margin-top: 20px;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

/* Final CTA */
.final-cta {
    padding: 150px 0;
    background: radial-gradient(circle at center, rgba(59, 130, 246, 0.1) 0%, rgba(10, 10, 10, 0) 70%);
}

.cta-title {
    font-size: 3rem;
    margin-bottom: 40px;
}

.cta-sub {
    margin-top: 20px;
    color: var(--text-secondary);
}

/* Footer */
.footer {
    padding: 50px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-logo {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--text-secondary);
}

.copyright {
    font-size: 0.8rem;
    color: #555;
}

/* Responsive */
@media (max-width: 768px) {
    .header-container { padding: 0 20px; }
    .nav { display: none; } /* Simplified for now */

    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 30px;
    }

    .hero-title { font-size: 2.5rem; }

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

    .feature-row {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }

    .feature-row.reverse { direction: ltr; }

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

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