@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;700&family=Noto+Sans+JP:wght@400;500;700;900&display=swap');

:root {
    --primary-color: #0f172a;
    --accent-color: #3b82f6;
    --accent-gradient: linear-gradient(135deg, #2563eb 0%, #3b82f6 100%);
    --text-color: #1e293b;
    --text-light: #64748b;
    --bg-color: #ffffff;
    --bg-light: #f8fafc;
    --border-color: #e2e8f0;
    --glass-bg: rgba(255, 255, 255, 0.85);
    --glass-border: rgba(255, 255, 255, 0.4);
    --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 10px 30px -5px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 25px 50px -12px rgba(0, 0, 0, 0.15);
}

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

body {
    font-family: 'Inter', 'Noto Sans JP', sans-serif;
    color: var(--text-color);
    background-color: var(--bg-color);
    line-height: 1.8;
    letter-spacing: 0.03em;
    -webkit-font-smoothing: antialiased;
}

img {
    max-width: 100%;
    height: auto;
}

a {
    color: var(--accent-color);
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

a:hover {
    color: #1d4ed8;
}

/* Header (Glassmorphism) */
.header {
    position: fixed;
    top: 0;
    width: 100%;
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--glass-border);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: all 0.3s ease;
}

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

.logo a {
    font-size: 1.75rem;
    font-weight: 900;
    background: linear-gradient(135deg, #0f172a 0%, #3b82f6 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: 0.05em;
}

.global-nav ul {
    display: flex;
    list-style: none;
    align-items: center;
    gap: 2.5rem;
}

.global-nav a {
    color: var(--primary-color);
    font-weight: 500;
    font-size: 0.95rem;
    position: relative;
}

.global-nav a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -4px;
    left: 0;
    background: var(--accent-gradient);
    transition: width 0.3s ease;
}

.global-nav a:hover::after {
    width: 100%;
}

.btn-contact {
    background: var(--accent-gradient);
    color: white !important;
    padding: 0.75rem 1.75rem;
    border-radius: 50px;
    font-weight: 700;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.btn-contact:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(59, 130, 246, 0.4);
}

/* Hero */
.hero {
    height: 90vh;
    min-height: 600px;
    background: linear-gradient(to right, rgba(15, 23, 42, 0.85), rgba(15, 23, 42, 0.4)), url('https://images.unsplash.com/photo-1451187580459-43490279c0fa?auto=format&fit=crop&w=1920&q=80') center/cover;
    background-attachment: fixed;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: white;
    padding-top: 80px;
}

.hero-inner {
    max-width: 900px;
    padding: 0 2rem;
}

.hero h1 {
    font-size: clamp(3rem, 6vw, 4.5rem);
    margin-bottom: 1rem;
    font-weight: 900;
    letter-spacing: 0.05em;
    text-shadow: 0 10px 30px rgba(0,0,0,0.5);
    background: linear-gradient(135deg, #ffffff 0%, #cbd5e1 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Page Header (Sub pages) */
.page-header {
    padding: 160px 2rem 5rem;
    background: linear-gradient(135deg, var(--bg-light) 0%, #e2e8f0 100%);
    text-align: center;
    border-bottom: 1px solid var(--border-color);
}

.page-header h1 {
    font-size: clamp(2.5rem, 4vw, 3.5rem);
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-weight: 900;
    background: linear-gradient(135deg, #0f172a 0%, #3b82f6 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Sections */
.section {
    padding: 8rem 2rem;
}

.section-inner {
    max-width: 1100px;
    margin: 0 auto;
}

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

.section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 900;
    color: var(--primary-color);
    margin-bottom: 4rem;
    position: relative;
    letter-spacing: 0.05em;
}

.section-title::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: var(--accent-gradient);
    margin: 1.5rem auto 0;
    border-radius: 2px;
}

/* Service / Achievements Cards */
.service-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 3rem;
}

.service-card {
    background: white;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
    border: 1px solid rgba(0,0,0,0.03);
    position: relative;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; width: 100%; height: 4px;
    background: var(--accent-gradient);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.service-card:hover::before {
    transform: scaleX(1);
}

.service-image {
    height: 240px;
    background-color: var(--bg-light);
    background-size: cover;
    background-position: center;
    transition: transform 0.6s ease;
}

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

.img-retail { background-image: url('https://images.unsplash.com/photo-1604719312566-8912e9227c6a?auto=format&fit=crop&w=800&q=80'); }
.img-system { background-image: url('https://images.unsplash.com/photo-1551288049-bebda4e38f71?auto=format&fit=crop&w=800&q=80'); }

.service-body {
    padding: 2.5rem;
    background: white;
    position: relative;
    z-index: 1;
}

.service-body h3 {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

/* Rich Achievements List */
.achievements-list > div {
    background: white;
    border-left: 5px solid transparent;
    border-image: var(--accent-gradient) 1;
    padding: 2.5rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow-md);
    border-radius: 0 12px 12px 0;
    transition: transform 0.3s ease;
}

.achievements-list > div:hover {
    transform: translateX(10px);
}

/* Buttons */
.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-gradient);
    color: white;
    padding: 1rem 2.5rem;
    border-radius: 50px;
    font-weight: 700;
    letter-spacing: 0.05em;
    box-shadow: 0 10px 25px rgba(59, 130, 246, 0.4);
    transition: all 0.3s ease;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 35px rgba(59, 130, 246, 0.5);
    color: white;
}

/* Footer */
.footer {
    background-color: var(--primary-color);
    color: white;
}

.contact-box {
    background: var(--accent-gradient);
    text-align: center;
    padding: 6rem 2rem;
}

.contact-box h2 {
    font-size: 2.5rem;
    font-weight: 900;
    margin-bottom: 1.5rem;
}

.footer-bottom {
    max-width: 1200px;
    margin: 0 auto;
    padding: 4rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-logo {
    font-size: 1.75rem;
    font-weight: 900;
}

.footer-links a {
    color: white;
    opacity: 0.7;
    font-weight: 500;
}

.footer-links a:hover {
    opacity: 1;
}

.copyright {
    text-align: center;
    padding: 2rem;
    font-size: 0.9rem;
    opacity: 0.5;
}

/* Animations */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s cubic-bezier(0.165, 0.84, 0.44, 1), transform 0.8s cubic-bezier(0.165, 0.84, 0.44, 1);
}

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

/* Responsive */
@media (max-width: 768px) {
    .global-nav { display: none; }
    .hero h1 { font-size: 2.5rem; }
    .section { padding: 5rem 1.5rem; }
    .footer-bottom { flex-direction: column; gap: 2rem; text-align: center; }
}