/* 
  ATTeND Games - Grimoire-inspired Clean Light & Dark Stylesheet 
*/

:root {
    /* Light Mode Basics */
    --color-bg: #FFFFFF;           /* Pure white */
    --color-bg-light: #FAFAFA;     /* Very light gray for subtle contrast */
    --color-surface: #FFFFFF;      /* Card backgrounds */
    --color-border: #E5E7EB;       /* Light border */
    
    /* Dark Mode Basics (for specific sections) */
    --color-bg-dark: #050505;
    --color-surface-dark: #111111;
    --color-border-dark: #222222;
    
    /* Primary Colors */
    --color-primary: #111827;      /* Very dark gray, almost black for primary text */
    --color-primary-inverse: #FFFFFF; 
    --color-accent: #0056D2;       /* ATTeND Blue */
    --color-accent-dim: rgba(0, 86, 210, 0.1);
    
    --color-text: #374151;         /* Dark gray for general text */
    --color-text-muted: #6B7280;   /* Medium gray for muted text */
    
    --shadow-subtle: 0 4px 20px rgba(0, 0, 0, 0.05);
    --shadow-hover: 0 10px 40px rgba(0, 0, 0, 0.1);
    
    --font-main: 'Inter', 'Noto Sans JP', sans-serif;
}

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

html {
    scroll-behavior: smooth;
    background-color: var(--color-bg);
}

body {
    font-family: var(--font-main);
    color: var(--color-text);
    background-color: var(--color-bg);
    line-height: 1.6;
    overflow-x: hidden;
    /* Clean subtle grid background pattern for the whole site */
    background-image: 
        linear-gradient(to right, rgba(0,0,0,0.03) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(0,0,0,0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    background-position: center;
}

::selection {
    background: var(--color-accent);
    color: #fff;
}

a {
    text-decoration: none;
    color: var(--color-primary);
    transition: all 0.3s ease;
}

ul {
    list-style: none;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 800;
    line-height: 1.2;
    letter-spacing: -0.02em;
    color: var(--color-primary);
}

.text-center { text-align: center; }
.text-white { color: var(--color-primary-inverse); }

/* Section Backgrounds */
.bg-light { background-color: var(--color-bg-light); border-top: 1px solid var(--color-border); border-bottom: 1px solid var(--color-border); }
.bg-blue { background-color: var(--color-bg-dark); color: var(--color-primary-inverse); border-top: 1px solid var(--color-border-dark); }
.bg-blue h2, .bg-blue p { color: var(--color-primary-inverse); }

/* --- DARK SECTION (Company) --- */
.section-dark {
    background-color: var(--color-bg-dark) !important;
    color: var(--color-primary-inverse);
    border-top: 1px solid var(--color-border-dark);
}
.section-dark::before {
    content: none;
}
.section-dark h1, .section-dark h2, .section-dark h3, .section-dark h4, .section-dark h5, .section-dark h6 {
    color: var(--color-primary-inverse);
}
.section-dark .section-title::after {
    background: linear-gradient(90deg, transparent, #fff, transparent);
}
.section-dark .text-muted {
    color: #9CA3AF;
}
.section-dark .info-list dt, .section-dark .info-list dd {
    border-color: rgba(255,255,255,0.1);
    color: #E5E7EB;
}
.section-dark .company-meaning {
    background: #FAFAFA;
    border: 1px solid #E5E7EB;
    box-shadow: 0 10px 40px rgba(0,0,0,0.6);
}
.section-dark .company-meaning::before {
    background: var(--color-primary);
    box-shadow: none;
}
.section-dark .company-meaning h3 { color: var(--color-primary); }
.section-dark .meaning-list li { color: var(--color-text); }
.section-dark .meaning-list li span { color: var(--color-primary); background: transparent; }
.section-dark .origin { border-color: #E5E7EB; color: var(--color-text-muted); }
.section-dark .source { color: var(--color-text-muted); }

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    position: relative;
    z-index: 1;
}

.section {
    padding: 8rem 0;
}

.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin: 0 auto 2.5rem auto;
    width: fit-content;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-primary), transparent);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 1rem 3rem;
    border-radius: 4px;
    font-weight: 600;
    font-size: 1rem;
    letter-spacing: 0.05em;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    z-index: 1;
}

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

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

.btn-outline-white {
    background-color: transparent;
    color: var(--color-primary-inverse);
    border: 1px solid rgba(255,255,255,0.5);
    backdrop-filter: blur(10px);
}

.btn-outline-white:hover {
    border-color: var(--color-primary-inverse);
    background: var(--color-primary-inverse);
    color: var(--color-primary);
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(0,0,0,0.05);
    transition: all 0.3s ease;
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--color-primary);
    letter-spacing: 0.15em;
    /* Removed text-transform: uppercase; so "e" stays lowercase */
}

.nav ul {
    display: flex;
    gap: 3rem;
}

.nav a {
    color: var(--color-text-muted);
    font-size: 0.85rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    transition: color 0.3s ease;
}

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

.mobile-menu-btn {
    display: none;
    cursor: pointer;
}

/* Hero Section */
.hero {
    position: relative;
    height: 85vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: -2;
    opacity: 0.8;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at center, rgba(255,255,255,0.4) 0%, var(--color-bg) 90%);
    z-index: -1;
}

.hero-content {
    max-width: 900px;
    text-align: center;
    padding: 0 2rem;
    position: relative;
    margin-top: 80px;
}

.hero-title {
    font-size: 5rem;
    margin-bottom: 2rem;
    line-height: 1.1;
    color: var(--color-primary);
    letter-spacing: -0.03em;
}

.hero-title .highlight {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    position: relative;
}

.hero-subtitle {
    font-size: 1.65rem;
    color: var(--color-text-muted);
    margin-bottom: 4rem;
    letter-spacing: 0.02em;
    line-height: 1.8;
}

.text-accent {
    color: var(--color-accent);
    font-weight: 800;
}

/* Service Section */
.service-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.service-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    position: relative;
    box-shadow: var(--shadow-subtle);
}

.service-card:hover {
    transform: translateY(-5px);
    border-color: rgba(0, 0, 0, 0.1);
    box-shadow: var(--shadow-hover);
}

.card-image {
    width: 100%;
    height: 200px;
    overflow: hidden;
    position: relative;
    border-bottom: 1px solid var(--color-border);
}

.card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.service-card:hover .card-image img {
    transform: scale(1.05);
}

.card-content {
    padding: 2rem;
    position: relative;
    z-index: 2;
}

.card-content h3 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
    color: var(--color-primary);
}

.card-content .subtitle {
    color: var(--color-text-muted);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: 1rem;
}

.card-content p {
    color: var(--color-text);
    font-size: 0.9rem;
    line-height: 1.7;
}

/* Company Section - Restyled structure */
.company-wrapper {
    display: grid;
    grid-template-columns: 3fr 2fr;
    gap: 5rem;
}

.info-list {
    display: grid;
    grid-template-columns: 140px 1fr;
    gap: 2rem 1rem;
}

.info-list dt {
    font-weight: 600;
    color: var(--color-text-muted);
    font-size: 0.9rem;
    letter-spacing: 0.05em;
    border-top: 1px solid var(--color-border);
    padding-top: 1rem;
}

.info-list dd {
    font-weight: 400;
    color: var(--color-primary);
    border-top: 1px solid var(--color-border);
    padding-top: 1rem;
}

.company-meaning {
    background: var(--color-bg-light);
    border: 1px solid var(--color-border);
    padding: 3rem;
    border-radius: 8px;
    position: relative;
    overflow: hidden;
}

.company-meaning::before {
    content: '';
    position: absolute;
    top: 0; left: 0; width: 2px; height: 100%;
    background: var(--color-primary);
}

.company-meaning h3 {
    font-size: 1.5rem;
    margin-bottom: 2rem;
    color: var(--color-primary);
    letter-spacing: 0.05em;
}

.phonetic {
    font-weight: 400;
    color: var(--color-text-muted);
    font-size: 1rem;
    margin-left: 0.5rem;
}

.meaning-list li {
    margin-bottom: 1.2rem;
    display: flex;
    align-items: flex-start;
    color: var(--color-text);
}

.meaning-list li span {
    display: inline-block;
    color: var(--color-primary);
    font-family: monospace;
    font-size: 0.9rem;
    font-weight: bold;
    margin-right: 16px;
    margin-top: 2px;
}

.company-meaning .source {
    margin-top: 3rem;
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

.company-meaning .origin {
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--color-border);
    font-weight: 400;
    color: var(--color-text-muted);
}

/* Contact Section */
.contact-desc {
    font-size: 1.25rem;
    color: var(--color-primary-inverse);
    margin-bottom: 4rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    opacity: 0.8;
}

/* Footer */
.footer {
    background: var(--color-bg-dark);
    border-top: 1px solid var(--color-border-dark);
    padding: 4rem 0;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 2rem;
}

.footer-links a {
    color: #9CA3AF;
    margin-right: 2rem;
    font-size: 0.85rem;
    letter-spacing: 0.05em;
}

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

.copyright {
    font-size: 0.85rem;
    color: #4B5563;
}

/* Animations */
.fade-in-section {
    opacity: 0;
    transform: translateY(40px);
    visibility: hidden;
    transition: opacity 1s cubic-bezier(0.16, 1, 0.3, 1), transform 1s cubic-bezier(0.16, 1, 0.3, 1);
    will-change: opacity, transform;
}

.fade-in-section.is-visible {
    opacity: 1;
    transform: none;
    visibility: visible;
}

/* Responsive */
@media (max-width: 900px) {
    .company-wrapper {
        grid-template-columns: 1fr;
        gap: 4rem;
    }
    
    .hero-title {
        font-size: 3.5rem;
    }
    
    .section-title {
        font-size: 2.2rem;
    }
}

@media (max-width: 768px) {
    .header-container {
        padding: 1.5rem;
    }
    
    .nav {
        display: none;
    }
    
    .mobile-menu-btn {
        display: flex;
        flex-direction: column;
        gap: 6px;
    }
    
    .mobile-menu-btn span {
        width: 30px;
        height: 2px;
        background: var(--color-primary);
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .info-list {
        grid-template-columns: 1fr;
        gap: 0.5rem;
    }
    
    .info-list dt {
        border-top: none;
        padding-top: 1.5rem;
        border-top: 1px solid var(--color-border);
    }
    
    .info-list dd {
        border-top: none;
        padding-top: 0;
    }
    
    .section {
        padding: 5rem 0;
    }
}

/* Custom Contact Form */
.custom-form-wrapper {
    max-width: 700px;
    margin: 3rem auto 0;
    background: var(--color-bg-light);
    border-radius: 12px;
    padding: 3rem;
    box-shadow: 0 10px 40px rgba(0,0,0,0.1);
    text-align: left;
    border: 1px solid var(--color-border);
    color: var(--color-text);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-control {
    width: 100%;
    padding: 1rem 1.25rem;
    background: #ffffff;
    border: 1px solid #d1d5db;
    border-radius: 8px;
    font-size: 1rem;
    font-family: inherit;
    color: var(--color-text);
    transition: all 0.3s ease;
}

.form-control:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

textarea.form-control {
    resize: vertical;
    min-height: 120px;
}

.form-submit-btn {
    width: 100%;
    padding: 1.25rem;
    font-size: 1.1rem;
    margin-top: 1rem;
    border-radius: 8px;
}

.form-success-message {
    text-align: center;
    padding: 2rem 0;
    color: var(--color-text);
}

.form-success-message .success-icon {
    width: 60px;
    height: 60px;
    background: #10b981;
    color: white;
    font-size: 2rem;
    line-height: 60px;
    border-radius: 50%;
    margin: 0 auto 1.5rem;
}

.form-success-message h4 {
    font-size: 1.5rem;
    color: var(--color-primary);
    margin-bottom: 0.5rem;
}

@media (max-width: 768px) {
    .custom-form-wrapper {
        padding: 2rem 1.5rem;
    }
}

/* Typography refinements */
.hero-title .particle {
    font-size: 0.55em;
    font-weight: 500;
    margin: 0 0.1em;
    vertical-align: baseline;
}