/* 
  style.css 
  Chronos Chronicle Landing Page
*/

:root {
    --color-bg: #0a0c10;
    --color-bg-alt: #12151c;
    --color-text: #e0e6ed;
    --color-text-muted: #8b949e;
    --color-primary: #d4af37; /* Gold */
    --color-primary-hover: #f1c40f;
    --color-accent: #3498db;
    
    --font-base: 'Noto Serif JP', serif;
    --font-heading: 'Cinzel', 'Noto Serif JP', serif;
    
    --transition-smooth: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

body {
    background-color: var(--color-bg);
    color: var(--color-text);
    font-family: var(--font-base);
    line-height: 1.8;
    overflow-x: hidden;
    scroll-behavior: smooth;
}

a {
    color: var(--color-text);
    text-decoration: none;
    transition: var(--transition-smooth);
}

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

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

.section-padding {
    padding: 100px 0;
}

.bg-darker {
    background-color: var(--color-bg-alt);
}

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

.section-title {
    font-size: 2.5rem;
    text-align: center;
    color: var(--color-primary);
    margin-bottom: 20px;
    letter-spacing: 2px;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 2px;
    background-color: var(--color-primary);
    margin: 15px auto 40px;
}

.section-desc {
    text-align: center;
    color: var(--color-text-muted);
    margin-bottom: 60px;
    font-size: 1.1rem;
}

/* Header */
header {
    position: fixed;
    top: 0;
    width: 100%;
    padding: 20px 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 1000;
    transition: var(--transition-smooth);
}

header.scrolled {
    background-color: rgba(10, 12, 16, 0.95);
    backdrop-filter: blur(10px);
    padding: 15px 40px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

.logo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    color: var(--color-primary);
    font-weight: 900;
    letter-spacing: 1px;
}

nav ul {
    list-style: none;
    display: flex;
    gap: 30px;
}

nav a {
    font-size: 0.95rem;
    letter-spacing: 1px;
    text-transform: uppercase;
}

/* Hero Section */
#hero {
    position: relative;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    background-image: url('assets/images/bg_hero.png');
    background-size: cover;
    background-position: center;
    background-attachment: fixed; /* Parallax effect */
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, rgba(10, 12, 16, 0.4), rgba(10, 12, 16, 0.9));
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    padding: 0 20px;
}

.catchphrase {
    font-size: 1.4rem;
    color: var(--color-primary);
    margin-bottom: 20px;
    font-weight: 400;
    letter-spacing: 3px;
}

.game-title {
    font-size: 3.5rem;
    line-height: 1.2;
    margin-bottom: 40px;
    text-shadow: 0 4px 20px rgba(0,0,0,0.8);
}

.game-title .subtitle {
    font-size: 1.8rem;
    display: block;
    margin-top: 10px;
    color: #ccc;
    font-weight: 400;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn-primary, .btn-secondary {
    display: inline-block;
    padding: 15px 40px;
    font-family: var(--font-heading);
    font-size: 1.1rem;
    letter-spacing: 2px;
    position: relative;
    overflow: hidden;
    z-index: 1;
    border-radius: 4px;
}

.btn-primary {
    background: transparent;
    color: var(--color-primary);
    border: 1px solid var(--color-primary);
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 0;
    height: 100%;
    background-color: var(--color-primary);
    z-index: -1;
    transition: var(--transition-smooth);
}

.btn-primary:hover {
    color: var(--color-bg);
}

.btn-primary:hover::before {
    width: 100%;
}

.btn-secondary {
    background: transparent;
    color: var(--color-text);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.btn-secondary::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 0;
    height: 100%;
    background-color: rgba(255, 255, 255, 0.1);
    z-index: -1;
    transition: var(--transition-smooth);
}

.btn-secondary:hover {
    border-color: var(--color-text);
}

.btn-secondary:hover::before {
    width: 100%;
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    opacity: 0.7;
    animation: bounce 2s infinite;
}

.scroll-indicator span {
    font-family: var(--font-heading);
    font-size: 0.8rem;
    letter-spacing: 2px;
    margin-bottom: 10px;
}

.arrow {
    width: 1px;
    height: 40px;
    background-color: var(--color-text);
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0) translateX(-50%); }
    40% { transform: translateY(-15px) translateX(-50%); }
    60% { transform: translateY(-7px) translateX(-50%); }
}

/* Story Section */
.story-content {
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
    font-size: 1.1rem;
}

.story-content p {
    margin-bottom: 30px;
}

/* Trailer Section */
.video-wrapper {
    position: relative;
    width: 100%;
    max-width: 800px;
    margin: 0 auto;
    padding-bottom: 56.25%; /* 16:9 Aspect Ratio */
    height: 0;
    overflow: hidden;
    border-radius: 8px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    background: var(--color-bg);
}

.video-wrapper iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
}

/* System Section */
.system-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.05);
    padding: 40px 30px;
    border-radius: 4px;
    text-align: center;
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--color-primary), transparent);
    transform: translateX(-100%);
    transition: transform 0.6s ease;
}

.card:hover {
    transform: translateY(-10px);
    background: rgba(255, 255, 255, 0.05);
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}

.card:hover::before {
    transform: translateX(100%);
}

.card-icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

.card h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--color-primary);
}

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

/* Character Section */
.character-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

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

.char-img {
    width: 100%;
    height: 400px;
    overflow: hidden;
    border-radius: 4px;
    margin-bottom: 20px;
    background: radial-gradient(circle, rgba(212,175,55,0.1) 0%, transparent 70%);
}

.char-img img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    transition: var(--transition-smooth);
}

.char-box:hover .char-img img {
    transform: scale(1.05);
}

.char-info h3 {
    font-size: 1.8rem;
    color: var(--color-primary);
    margin-bottom: 5px;
}

.char-role {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    margin-bottom: 15px;
    letter-spacing: 2px;
}

.char-desc {
    font-size: 0.95rem;
}

/* Footer */
footer {
    background-color: #050608;
    padding: 60px 0;
    text-align: center;
    border-top: 1px solid rgba(255,255,255,0.05);
}

.footer-logo {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    color: var(--color-primary);
    margin-bottom: 20px;
}

footer p {
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

/* Animations (Triggered via JS) */
.fade-in {
    opacity: 0;
    transition: opacity 0.8s ease;
}

.fade-in.appear {
    opacity: 1;
}

.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in-up.appear {
    opacity: 1;
    transform: translateY(0);
}

.delay-1 { transition-delay: 0.2s; }
.delay-2 { transition-delay: 0.4s; }

/* Responsive */
@media (max-width: 768px) {
    header {
        padding: 20px;
    }
    
    nav {
        display: none; /* simple hidden for mobile in this mockup */
    }
    
    .game-title {
        font-size: 2.2rem;
    }
    
    .game-title .subtitle {
        font-size: 1.2rem;
    }
    
    .section-padding {
        padding: 60px 0;
    }
}