/* Global Variables (60-30-10 Rule) */
:root {
    /* 60%: Backgrounds */
    --bg-base: #050505; /* Deep, pure dark */
    --bg-surface: #111111; /* Elevated surface */
    
    /* 30%: Secondary / Borders */
    --border-subtle: #222222;
    --border-hover: #333333;
    
    /* 10%: Accents */
    --accent-red: #E63946;
    --accent-red-hover: #F25C68;
    
    /* Typography */
    --text-primary: #F8F9FA;
    --text-secondary: #8B8B8B;
    --text-muted: #555555;
    
    /* Layout */
    --max-width: 1200px;
    --transition: 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

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

body {
    background-color: var(--bg-base);
    color: var(--text-primary);
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

/* Typography Classes */
h1, h2, h3, h4 {
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.02em;
}

.accent {
    color: var(--accent-red);
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(5, 5, 5, 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-subtle);
    z-index: 100;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo-img {
    height: 32px;
    width: auto;
    border-radius: 4px;
}

.nav-links {
    display: flex;
    gap: 2rem;
    list-style: none;
    align-items: center;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 600;
    transition: var(--transition);
}

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

/* Buttons */
.btn-primary {
    display: inline-block;
    background-color: var(--accent-red);
    color: #fff;
    padding: 0.8rem 1.5rem;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    border: 1px solid transparent;
}

.btn-primary:hover {
    background-color: var(--accent-red-hover);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(230, 57, 70, 0.2);
}

.btn-outline {
    display: inline-block;
    background-color: transparent;
    color: var(--text-primary) !important;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    border: 1px solid var(--border-subtle);
}

.btn-outline:hover {
    border-color: var(--border-hover);
    background-color: var(--bg-surface);
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 6rem 2rem 2rem;
    overflow: hidden;
}

.hero-content {
    max-width: 800px;
    z-index: 2;
    /* For fade-in animation via JS */
    opacity: 0;
    transform: translateY(20px);
}

.hero-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    border-radius: 100px;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 5rem);
    margin-bottom: 1.5rem;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.glow-bg {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(230,57,70,0.15) 0%, rgba(5,5,5,0) 70%);
    z-index: 1;
    pointer-events: none;
}

/* Section Common */
.section {
    padding: 8rem 2rem;
    max-width: var(--max-width);
    margin: 0 auto;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.section-subtitle {
    color: var(--text-secondary);
    font-size: 1.1rem;
    max-width: 500px;
    margin: 0 auto;
}

/* Grid & Cards */
.grid-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1.5rem;
}

.card {
    flex: 0 1 calc(25% - 1.5rem);
    min-width: 280px;
    background-color: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    border-radius: 12px;
    padding: 2rem;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    /* For scroll animation */
    opacity: 0;
    transform: translateY(20px);
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background-color: var(--accent-red);
    opacity: 0;
    transition: var(--transition);
}

.card:hover {
    transform: translateY(-5px);
    border-color: var(--border-hover);
    box-shadow: 0 20px 40px rgba(0,0,0,0.4);
}

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

.card-icon {
    font-size: 2rem;
    color: var(--accent-red);
    margin-bottom: 1.5rem;
    font-family: serif; /* Better for Kanji */
}

.card-title {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
}

.card-desc {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* Footer */
.footer {
    text-align: center;
    padding: 4rem 2rem;
    border-top: 1px solid var(--border-subtle);
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Animation Classes */
.fade-in {
    opacity: 1 !important;
    transform: translateY(0) !important;
    transition: opacity 0.8s ease, transform 0.8s ease;
}

/* Responsive */
@media (max-width: 768px) {
    .nav-links {
        display: none; /* Simplification for now */
    }
}