:root {
    --primary: #3b82f6;
    --secondary: #8b5cf6;
    --bg-dark: #0f172a;
    --bg-darker: #020617;
    --text-main: #f8fafc;
    --text-dim: #94a3b8;
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
}

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

body {
    font-family: 'Outfit', 'Noto Sans JP', sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Material Symbols Icon Base Style */
.material-symbols-rounded {
    font-family: 'Material Symbols Rounded' !important;
    font-weight: normal;
    font-style: normal;
    font-size: 24px;
    line-height: 1;
    display: inline-block;
    white-space: nowrap;
    word-wrap: normal;
    direction: ltr;
    -webkit-font-smoothing: antialiased;
    font-feature-settings: 'liga';
}

/* Glassmorphism */
.glass {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
}

.glass-dark {
    background: rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-top: 1px solid var(--glass-border);
    border-bottom: 1px solid var(--glass-border);
}

/* Navigation */
nav {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
}

.nav-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 800;
    font-size: 1.25rem;
}

.logo img {
    height: 40px;
    border-radius: 10px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-dim);
    font-weight: 600;
    transition: color 0.3s;
}

.nav-links a:hover {
    color: var(--text-main);
}

/* Buttons */
.btn-primary-small {
    padding: 0.6rem 1.2rem;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 50px;
    color: white !important;
    font-size: 0.9rem;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.4);
}

.btn-secondary {
    padding: 1rem 2rem;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 50px;
    color: white;
    text-decoration: none;
    font-weight: 600;
    transition: background 0.3s;
}

.btn-secondary:hover {
    background: var(--glass-border);
}

/* Hero Section */
.hero {
    padding: 180px 2rem 100px;
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-content {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.badge {
    display: inline-block;
    width: fit-content;
    padding: 0.5rem 1rem;
    background: rgba(59, 130, 246, 0.1);
    color: var(--primary);
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.9rem;
    border: 1px solid rgba(59, 130, 246, 0.2);
}

h1 {
    font-size: 4rem;
    line-height: 1.1;
    font-weight: 800;
}

.gradient-text {
    background: linear-gradient(135deg, #60a5fa, #c084fc);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.subtitle {
    font-size: 1.25rem;
    color: var(--text-dim);
    max-width: 500px;
}

.cta-buttons {
    display: flex;
    gap: 1.5rem;
    align-items: center;
    margin-top: 1rem;
}

.btn-appstore img {
    height: 60px;
    transition: transform 0.3s;
}

.btn-appstore:hover img {
    transform: translateY(-3px);
}

.hero-image {
    position: relative;
    display: flex;
    justify-content: center;
}

.phone-mockup {
    width: 300px;
    height: 600px;
    background: #020617;
    border-radius: 40px;
    border: 8px solid #334155;
    overflow: hidden;
    box-shadow: 0 50px 100px rgba(0, 0, 0, 0.8);
    position: relative;
}

.phone-mockup::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 120px;
    height: 25px;
    background: #334155;
    border-bottom-left-radius: 15px;
    border-bottom-right-radius: 15px;
    z-index: 2;
}

.screenshot {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Features Section */
.features {
    padding: 120px 2rem;
    max-width: 1240px;
    margin: 0 auto;
}

.section-header {
    text-align: center;
    margin-bottom: 6rem;
}

.section-header h2 {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, #fff 30%, #94a3b8 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-header p {
    color: var(--text-dim);
    font-size: 1.3rem;
    font-weight: 300;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 3rem;
}

.feature-card {
    position: relative;
    padding: 3rem;
    border-radius: 48px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    transition: all 0.5s cubic-bezier(0.16, 1, 0.3, 1);
    display: flex;
    flex-direction: column;
    align-items: center; /* Center align for a cleaner look */
    text-align: center;
}

.feature-card:hover {
    transform: translateY(-15px);
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(59, 130, 246, 0.3);
    box-shadow: 0 30px 60px -12px rgba(0, 0, 0, 0.5);
}

.icon-box {
    width: 96px;
    height: 96px;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.15), rgba(139, 92, 246, 0.15));
    border-radius: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 2.5rem;
    color: #3b82f6;
    border: 1px solid rgba(59, 130, 246, 0.2);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

.icon-box .material-symbols-rounded {
    font-size: 48px;
    line-height: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    /* Ensure text doesn't appear if font hasn't loaded yet */
    white-space: nowrap;
}

.feature-card h3 {
    margin-bottom: 1.25rem;
    font-size: 1.8rem;
    font-weight: 700;
    color: #fff;
    letter-spacing: -0.01em;
}

.feature-card p {
    color: var(--text-dim);
    font-size: 1.15rem;
    line-height: 1.8;
}

/* Sparkle effect on hover */
.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: inherit;
    background: radial-gradient(800px circle at var(--mouse-x) var(--mouse-y), rgba(255,255,255,0.06), transparent 40%);
    opacity: 0;
    transition: opacity 0.5s;
    pointer-events: none;
}

.feature-card:hover::before {
    opacity: 1;
}

/* About Section */
.about {
    padding: 120px 2rem;
    text-align: center;
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
}

.about h2 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
}

.about p {
    font-size: 1.2rem;
    color: var(--text-dim);
    margin-bottom: 3rem;
}

.keywords {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem;
}

.keywords span {
    padding: 0.5rem 1.2rem;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 50px;
    font-size: 0.9rem;
    color: var(--text-dim);
}

/* Recommended Section */
.recommended {
    padding: 100px 2rem;
    text-align: center;
}

.recommended h2 {
    font-size: 2rem;
    margin-bottom: 3rem;
}

.rec-list {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 2rem;
}

.rec-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
}

.rec-item .material-symbols-rounded {
    color: #10b981;
}

/* Footer */
footer {
    padding: 4rem 2rem;
    border-top: 1px solid var(--glass-border);
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-links {
    display: flex;
    gap: 2rem;
}

.footer-links a {
    color: var(--text-dim);
    text-decoration: none;
    font-size: 0.9rem;
}

.footer-links a:hover {
    color: var(--text-main);
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeInUp 0.8s ease-out forwards;
}

.hero-content .fade-in:nth-child(1) { animation-delay: 0.1s; }
.hero-content .fade-in:nth-child(2) { animation-delay: 0.2s; }
.hero-content .fade-in:nth-child(3) { animation-delay: 0.3s; }
.hero-content .fade-in:nth-child(4) { animation-delay: 0.4s; }
.hero-image { animation-delay: 0.5s; }

/* Responsive */
@media (max-width: 768px) {
    .hero {
        grid-template-columns: 1fr;
        padding-top: 120px;
        text-align: center;
    }

    .hero-content {
        align-items: center;
    }

    h1 {
        font-size: 2.8rem;
    }

    .nav-links {
        display: none;
    }

    .cta-buttons {
        flex-direction: column;
    }

    .footer-content {
        flex-direction: column;
        gap: 2rem;
        text-align: center;
    }
}