/* ==========================================
   CSS Variables & Tokens 
   ========================================== */
:root {
    /* Colors */
    --clr-primary-400: hsl(210, 100%, 50%);
    --clr-primary-500: hsl(210, 100%, 40%);
    --clr-primary-600: hsl(210, 100%, 30%);
    
    --clr-accent: hsl(190, 100%, 50%);
    
    --clr-dark-900: hsl(220, 20%, 10%);
    --clr-dark-800: hsl(220, 20%, 15%);
    --clr-dark-700: hsl(220, 20%, 25%);

    --clr-light-100: hsl(0, 0%, 100%);
    --clr-light-200: hsl(210, 20%, 98%);
    --clr-light-300: hsl(210, 10%, 90%);

    --clr-text-main: hsl(220, 20%, 20%);
    --clr-text-muted: hsl(220, 10%, 40%);
    
    /* Typography */
    --ff-heading: 'Outfit', sans-serif;
    --ff-body: 'Noto Sans JP', sans-serif;
    
    /* Spacing */
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 2rem;
    --space-xl: 4rem;
    --space-xxl: 8rem;

    /* Shadows & Effects */
    --shadow-sm: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-md: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    
    --radius-md: 0.5rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ==========================================
   Reset & Base Styles
   ========================================== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--ff-body);
    color: var(--clr-text-main);
    background-color: var(--clr-light-100);
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--ff-heading);
    line-height: 1.2;
    color: var(--clr-dark-900);
    letter-spacing: -0.02em;
}

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

ul {
    list-style: none;
}

img {
    max-width: 100%;
    display: block;
}

/* ==========================================
   Typography & Utilities
   ========================================== */
.text-gradient {
    background: linear-gradient(135deg, var(--clr-primary-400), var(--clr-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.section {
    padding: var(--space-xxl) 0;
}

.bg-light { background-color: var(--clr-light-200); }
.bg-dark { 
    background-color: var(--clr-dark-900); 
    color: var(--clr-light-100);
}
.bg-dark h2, .bg-dark h3, .bg-dark p {
    color: var(--clr-light-100);
}

/* Section Headers */
.section-header {
    text-align: center;
    margin-bottom: var(--space-xl);
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    margin-bottom: var(--space-md);
}

.section-line {
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--clr-primary-400), var(--clr-accent));
    margin: 0 auto var(--space-md);
    border-radius: 2px;
}

.section-desc {
    color: var(--clr-text-muted);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
}

/* Glassmorphism */
.glass-card {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.5);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: var(--space-lg);
}

.bg-dark .glass-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

/* Buttons */
.btn-primary {
    display: inline-block;
    background: linear-gradient(135deg, var(--clr-primary-500), var(--clr-primary-400));
    color: var(--clr-light-100) !important;
    padding: 0.75rem 1.5rem;
    border-radius: 50px;
    font-weight: 600;
    font-family: var(--ff-heading);
    border: none;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(0, 100, 255, 0.3);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 100, 255, 0.4);
}

.btn-large {
    padding: 1rem 2.5rem;
    font-size: 1.1rem;
}

.btn-block {
    display: block;
    width: 100%;
}

/* ==========================================
   Navigation
   ========================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 1.25rem 0;
    transition: background var(--transition-base), padding var(--transition-base), box-shadow var(--transition-base);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    padding: 1rem 0;
    box-shadow: var(--shadow-sm);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--ff-heading);
    font-weight: 800;
    font-size: 1.5rem;
}

.logo-icon {
    color: var(--clr-primary-500);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-links a:not(.btn-primary) {
    font-family: var(--ff-heading);
    font-weight: 600;
    position: relative;
    padding: 0.5rem 0;
}

.nav-links a:not(.btn-primary)::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--clr-primary-500);
    transition: width var(--transition-fast);
}

.nav-links a:not(.btn-primary):hover::after {
    width: 100%;
}

.mobile-menu-btn {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
}

/* ==========================================
   Hero Section
   ========================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding-top: 5rem;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background: var(--clr-light-200);
    overflow: hidden;
}

.blob {
    position: absolute;
    filter: blur(80px);
    z-index: -1;
    opacity: 0.6;
    border-radius: 50%;
    animation: float 10s infinite ease-in-out alternate;
}

.blob-1 {
    top: 10%;
    left: 10%;
    width: 400px;
    height: 400px;
    background: rgba(0, 150, 255, 0.4);
}

.blob-2 {
    bottom: 0%;
    right: 10%;
    width: 500px;
    height: 500px;
    background: rgba(0, 255, 200, 0.3);
    animation-delay: -5s;
}

@keyframes float {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(30px, 50px) scale(1.1); }
}

.hero-content {
    text-align: center;
    max-width: 800px;
    padding: 0 var(--space-md);
    z-index: 1;
}

.hero-title {
    font-size: clamp(3rem, 8vw, 5.5rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--space-lg);
    opacity: 0;
    animation: fadeInUp 1s forwards;
}

.hero-subtitle {
    font-size: clamp(1.1rem, 2vw, 1.4rem);
    color: var(--clr-text-muted);
    margin-bottom: var(--space-xl);
    opacity: 0;
    animation: fadeInUp 1s forwards 0.3s;
}

.hero-cta {
    opacity: 0;
    animation: fadeInUp 1s forwards 0.6s;
}

/* ==========================================
   About Section
   ========================================== */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
    align-items: center;
}

.about-heading {
    font-size: clamp(1.8rem, 3vw, 2.5rem);
    margin-bottom: var(--space-lg);
    line-height: 1.4;
}

.about-text p {
    color: var(--clr-text-muted);
    font-size: 1.1rem;
}

.about-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-md);
}

.stat-card {
    background: #fff;
    padding: var(--space-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    text-align: center;
    transition: transform var(--transition-fast);
}

.stat-card:nth-child(3) {
    grid-column: span 2;
}

.stat-card:hover {
    transform: translateY(-5px);
}

.stat-icon {
    font-size: 2.5rem;
    color: var(--clr-primary-500);
    margin-bottom: var(--space-sm);
}

/* ==========================================
   Services Section
   ========================================== */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-lg);
}

.service-card {
    padding: var(--space-xl) var(--space-lg);
    text-align: center;
    transition: var(--transition-base);
}

.hover-lift:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(0, 150, 255, 0.3);
}

.service-icon-wrapper {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--space-lg);
    background: linear-gradient(135deg, rgba(0, 150, 255, 0.1), rgba(0, 255, 200, 0.1));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.service-icon {
    font-size: 2.5rem;
    color: var(--clr-primary-500);
}

.service-title {
    font-size: 1.5rem;
    margin-bottom: var(--space-md);
}

.service-text {
    color: var(--clr-text-muted);
}

/* ==========================================
   Company Section
   ========================================== */
.company-card {
    max-width: 800px;
    margin: 0 auto;
}

.company-table {
    width: 100%;
    border-collapse: collapse;
}

.company-table th, .company-table td {
    padding: 1.5rem;
    border-bottom: 1px solid var(--clr-light-300);
    text-align: left;
}

.company-table tr:last-child th,
.company-table tr:last-child td {
    border-bottom: none;
}

.company-table th {
    width: 30%;
    font-weight: 600;
    color: var(--clr-dark-700);
}

/* ==========================================
   Contact Section
   ========================================== */
.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
    align-items: center;
}

.contact-title {
    font-size: clamp(2.5rem, 4vw, 3.5rem);
    margin-bottom: var(--space-lg);
}

.contact-desc {
    font-size: 1.2rem;
    margin-bottom: var(--space-lg);
    opacity: 0.8;
}

.contact-details p {
    font-size: 1.1rem;
    margin-bottom: var(--space-sm);
    display: flex;
    align-items: center;
    gap: 1rem;
}

.contact-details i {
    color: var(--clr-accent);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
    opacity: 0.8;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-md);
    background: rgba(0, 0, 0, 0.2);
    color: var(--clr-light-100);
    font-family: inherit;
    transition: var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--clr-accent);
    background: rgba(0, 0, 0, 0.4);
}

/* ==========================================
   Footer
   ========================================== */
.footer {
    background: var(--clr-dark-900);
    color: var(--clr-light-100);
    padding: var(--space-lg) 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

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

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

/* ==========================================
   Animations & Interactivity
   ========================================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

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

.delay-1 { transition-delay: 0.2s; }
.delay-2 { transition-delay: 0.4s; }
.delay-3 { transition-delay: 0.6s; }

/* ==========================================
   Responsive
   ========================================== */
@media (max-width: 991px) {
    .about-grid, .contact-wrapper {
        grid-template-columns: 1fr;
    }
    
    .about-stats {
        order: -1;
    }
    
    .company-table th, .company-table td {
        display: block;
        width: 100%;
    }
    
    .company-table th {
        padding-bottom: 0.5rem;
        border-bottom: none;
    }
    
    .company-table td {
        padding-top: 0;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none; /* simple mobile menu hiding for now */
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .footer-content {
        flex-direction: column;
        gap: var(--space-md);
        text-align: center;
    }
}