/* CSS Variables for Premium Dark Theme */
:root {
    --bg-base: #050505;
    --bg-surface: rgba(20, 20, 25, 0.6);
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --accent-primary: #ff2a5f;
    --accent-secondary: #ff7e40;
    --glass-border: rgba(255, 255, 255, 0.08);
    --glass-bg: rgba(255, 255, 255, 0.03);
    
    --font-sans: 'Inter', 'Noto Sans JP', sans-serif;
    --font-serif: 'Shippori Mincho', serif;
}

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

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Ambient Background Animation */
.ambient-background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -1;
    overflow: hidden;
    background: radial-gradient(circle at 50% 50%, #111 0%, #000 100%);
}

.orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.4;
    animation: float 20s infinite ease-in-out alternate;
}

.orb-1 {
    width: 600px;
    height: 600px;
    background: var(--accent-primary);
    top: -100px;
    left: -200px;
    animation-delay: 0s;
}

.orb-2 {
    width: 500px;
    height: 500px;
    background: var(--accent-secondary);
    bottom: -100px;
    right: -100px;
    animation-delay: -5s;
}

.orb-3 {
    width: 400px;
    height: 400px;
    background: #6a00ff;
    top: 40%;
    left: 50%;
    animation-delay: -10s;
}

@keyframes float {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(50px, 50px) scale(1.1); }
}

/* Header */
.header {
    padding: 24px 0;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.05em;
    background: linear-gradient(135deg, #fff, #aaa);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding-top: 100px;
}

.hero-content {
    max-width: 800px;
    z-index: 10;
}

.hero-title {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-bottom: 32px;
}

.hero-title-main {
    font-family: var(--font-serif);
    font-size: clamp(3rem, 8vw, 6rem);
    line-height: 1.1;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.hero-title-sub {
    font-size: clamp(1.2rem, 3vw, 2rem);
    font-weight: 600;
    color: var(--accent-primary);
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.hero-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 48px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* Buttons */
.cta-group {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    padding: 16px 32px;
    border-radius: 100px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    border: none;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    color: white;
    box-shadow: 0 10px 30px rgba(255, 42, 95, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 40px rgba(255, 42, 95, 0.5);
}

.btn-secondary {
    background: var(--glass-bg);
    color: white;
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

/* Glassmorphism Cards */
.glass-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
}

/* Mockup */
.hero-mockup-container {
    margin-top: 64px;
    width: 100%;
    max-width: 600px;
    z-index: 10;
    perspective: 1000px;
}

.mockup-card {
    padding: 16px;
    transform: rotateX(10deg);
    transition: transform 0.5s ease;
    box-shadow: 0 30px 60px rgba(0,0,0,0.5);
}

.mockup-card:hover {
    transform: rotateX(0deg) translateY(-10px);
}

.mockup-header {
    display: flex;
    gap: 8px;
    margin-bottom: 16px;
    padding: 0 8px;
}

.mockup-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}
.red { background: #ff5f56; }
.yellow { background: #ffbd2e; }
.green { background: #27c93f; }

.mockup-image {
    width: 100%;
    height: 300px;
    border-radius: 16px;
    overflow: hidden;
    background: #111;
    position: relative;
}

.mockup-image-inner {
    width: 100%;
    height: 100%;
    background-image: url('https://images.unsplash.com/photo-1511285560929-80b456fea0bc?q=80&w=2069&auto=format&fit=crop');
    background-size: cover;
    background-position: center;
    opacity: 0.8;
}

.mockup-info {
    padding: 24px 8px 8px;
    text-align: left;
}

.mockup-info h3 {
    font-size: 1.25rem;
    margin-bottom: 4px;
}

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

/* Features */
.features {
    padding: 120px 0;
    z-index: 10;
    position: relative;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
}

.feature-card {
    padding: 40px 32px;
    transition: transform 0.3s ease, background 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.08);
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 24px;
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 16px;
    font-weight: 600;
}

.feature-card p {
    color: var(--text-secondary);
}

/* Footer */
.footer {
    padding: 64px 0 32px;
    border-top: 1px solid var(--glass-border);
    position: relative;
    z-index: 10;
    background: rgba(0,0,0,0.5);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 48px;
    flex-wrap: wrap;
    gap: 24px;
}

.footer-logo {
    font-size: 1.5rem;
    font-weight: 800;
}

.footer-links {
    display: flex;
    gap: 24px;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.2s ease;
}

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

.footer-bottom {
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* Responsive */
@media (max-width: 768px) {
    .cta-group {
        flex-direction: column;
        align-items: stretch;
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
}