:root {
    /* Color Palette */
    --clr-bg: #070B14;
    --clr-surface: rgba(15, 23, 42, 0.6);
    --clr-surface-hover: rgba(30, 41, 59, 0.8);
    --clr-primary: #00E5FF; /* Cyan */
    --clr-secondary: #7B61FF; /* Purple */
    --clr-text: #F8FAFC;
    --clr-text-muted: #94A3B8;
    --clr-border: rgba(255, 255, 255, 0.1);
    
    /* Typography */
    --font-sans: 'Inter', 'Noto Sans JP', sans-serif;
    --font-display: 'Outfit', 'Noto Sans JP', sans-serif;
    
    /* Transitions */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Layout */
    --container-max: 1200px;
    --header-height: 80px;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    background-color: var(--clr-bg);
    color: var(--clr-text);
    font-family: var(--font-sans);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
}

/* Background elements for depth */
body::before {
    content: '';
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: 
        radial-gradient(circle at 15% 50%, rgba(0, 229, 255, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 85% 30%, rgba(123, 97, 255, 0.05) 0%, transparent 50%);
    z-index: -2;
    pointer-events: none;
}

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

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

ul {
    list-style: none;
}

/* Typography Utilities */
h1, h2, h3, h4 {
    font-family: var(--font-display);
    line-height: 1.2;
    margin-bottom: 1rem;
}

h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
}

.text-gradient {
    background: linear-gradient(135deg, var(--clr-primary), var(--clr-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.subtitle {
    display: inline-block;
    color: var(--clr-primary);
    font-family: var(--font-display);
    font-size: 0.875rem;
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-bottom: 0.5rem;
}

/* Containers */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 5%;
}

.section {
    padding: 8rem 0;
    position: relative;
}

.section-dark {
    background: rgba(4, 7, 16, 0.4);
    border-top: 1px solid var(--clr-border);
    border-bottom: 1px solid var(--clr-border);
}

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

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

/* UI Elements */
.glass-card {
    background: var(--clr-surface);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--clr-border);
    border-radius: 16px;
    padding: 2rem;
    transition: var(--transition);
}

.glass-card:hover {
    background: var(--clr-surface-hover);
    border-color: rgba(0, 229, 255, 0.3);
    transform: translateY(-5px);
}

/* Buttons */
.btn-primary, .btn-primary-small, .btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    border-radius: 50px;
    font-family: var(--font-display);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.btn-primary {
    background: linear-gradient(135deg, var(--clr-primary), #00A6DA);
    color: #000;
    padding: 1rem 2rem;
    font-size: 1.125rem;
    border: none;
    box-shadow: 0 0 20px rgba(0, 229, 255, 0.3);
}

.btn-primary:hover {
    box-shadow: 0 0 30px rgba(0, 229, 255, 0.5);
    transform: translateY(-2px);
}

.btn-primary-small {
    background: var(--clr-primary);
    color: #000;
    padding: 0.5rem 1.25rem;
    font-size: 0.875rem;
}

.btn-primary-small:hover {
    background: #fff;
}

.btn-secondary {
    background: transparent;
    color: var(--clr-text);
    padding: 1rem 2rem;
    font-size: 1.125rem;
    border: 1px solid var(--clr-border);
}

.btn-secondary:hover {
    border-color: var(--clr-primary);
    background: rgba(0, 229, 255, 0.05);
}

/* Header */
#header {
    position: fixed;
    top: 0;
    width: 100%;
    height: var(--header-height);
    background: rgba(7, 11, 20, 0.8);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    z-index: 100;
    transition: var(--transition);
}

#header.scrolled {
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
    border-color: rgba(0, 229, 255, 0.1);
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 300;
    letter-spacing: 1px;
}

.logo strong {
    font-weight: 700;
}

.logo i {
    color: var(--clr-primary);
    font-size: 1.75rem;
}

.desktop-nav ul {
    display: flex;
    align-items: center;
    gap: 2.5rem;
}

.desktop-nav a:not(.btn-primary-small) {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--clr-text-muted);
}

.desktop-nav a:not(.btn-primary-small):hover {
    color: var(--clr-primary);
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--clr-text);
    font-size: 1.5rem;
    cursor: pointer;
}

/* Mobile Nav */
.mobile-nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    width: 100%;
    background: var(--clr-bg);
    padding: 2rem;
    border-bottom: 1px solid var(--clr-border);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 99;
}

.mobile-nav.open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
}

.mobile-nav ul {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    text-align: center;
}

.mobile-nav a {
    font-size: 1.25rem;
    font-weight: 500;
}

/* Hero Section */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding-top: var(--header-height);
}

.hero-bg {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background-image: url('../images/hero-bg.png');
    background-size: cover;
    background-position: center;
    z-index: -1;
    opacity: 0.4;
}

.hero-bg::after {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: linear-gradient(to bottom, transparent, var(--clr-bg));
}

.hero-content {
    max-width: 900px;
    text-align: left;
}

.hero-badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    border: 1px solid var(--clr-border);
    border-radius: 50px;
    font-family: var(--font-display);
    font-size: 0.875rem;
    color: var(--clr-text-muted);
    margin-bottom: 1.5rem;
    background: rgba(255, 255, 255, 0.03);
    backdrop-filter: blur(4px);
}

.hero h1 {
    font-size: clamp(3rem, 6vw, 5rem);
    margin-bottom: 1.5rem;
    letter-spacing: -0.02em;
}

.hero p {
    font-size: clamp(1.125rem, 2vw, 1.25rem);
    color: var(--clr-text-muted);
    margin-bottom: 2.5rem;
    max-width: 700px;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    color: var(--clr-text-muted);
    font-size: 0.875rem;
    opacity: 0.5;
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0) translateX(-50%); }
    40% { transform: translateY(-10px) translateX(-50%); }
    60% { transform: translateY(-5px) translateX(-50%); }
}

/* Target Section */
.issues-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.issue-icon {
    font-size: 2.5rem;
    color: var(--clr-secondary);
    margin-bottom: 1rem;
}

.issue-card h3 {
    font-size: 1.25rem;
}

.issue-card p {
    color: var(--clr-text-muted);
    font-size: 0.9375rem;
}

.solution-banner {
    background: linear-gradient(135deg, rgba(0, 229, 255, 0.1), rgba(123, 97, 255, 0.1));
    border-color: rgba(0, 229, 255, 0.3);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.solution-banner::before {
    content: '';
    position: absolute;
    top: -50%; left: -50%; right: -50%; bottom: -50%;
    background: radial-gradient(circle at center, rgba(0, 229, 255, 0.1) 0%, transparent 70%);
    z-index: 0;
}

.banner-content {
    position: relative;
    z-index: 1;
}

.banner-content h3 {
    font-size: 1.75rem;
    color: var(--clr-primary);
}

.banner-content p {
    font-size: 1.125rem;
    max-width: 800px;
    margin: 0 auto;
}

/* Services Section */
.services-timeline {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    position: relative;
}

.services-timeline::before {
    content: '';
    position: absolute;
    top: 0; bottom: 0; left: 24px;
    width: 2px;
    background: linear-gradient(to bottom, transparent, var(--clr-primary), var(--clr-secondary), transparent);
}

.service-item {
    display: flex;
    gap: 2rem;
    position: relative;
}

.service-number {
    width: 50px;
    height: 50px;
    background: var(--clr-bg);
    border: 2px solid var(--clr-primary);
    color: var(--clr-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1.25rem;
    flex-shrink: 0;
    z-index: 2;
}

.service-content {
    flex: 1;
}

.service-icon {
    font-size: 2rem;
    color: #fff;
    margin-bottom: 1rem;
    display: inline-block;
    padding: 1rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 12px;
}

/* About Section */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-text p {
    color: var(--clr-text-muted);
    font-size: 1.125rem;
    margin-bottom: 3rem;
}

.company-info .info-row {
    display: flex;
    padding: 1rem 0;
    border-bottom: 1px solid var(--clr-border);
}

.info-label {
    width: 120px;
    color: var(--clr-primary);
    font-weight: 500;
}

.info-value {
    color: var(--clr-text);
}

.visual-box {
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 8rem;
    color: rgba(255, 255, 255, 0.1);
    position: relative;
    overflow: hidden;
}

.visual-glow {
    position: absolute;
    top: 50%; left: 50%; transform: translate(-50%, -50%);
    width: 60%; height: 60%;
    background: var(--clr-primary);
    filter: blur(100px);
    opacity: 0.3;
    animation: pulse 4s ease-in-out infinite alternate;
}

@keyframes pulse {
    0% { transform: translate(-50%, -50%) scale(1); opacity: 0.2; }
    100% { transform: translate(-50%, -50%) scale(1.2); opacity: 0.4; }
}

/* Contact Form */
.contact-wrapper {
    max-width: 700px;
    margin: 0 auto;
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.required {
    color: var(--clr-secondary);
}

input, textarea {
    width: 100%;
    padding: 1rem;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--clr-border);
    border-radius: 8px;
    color: var(--clr-text);
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition);
}

input:focus, textarea:focus {
    outline: none;
    border-color: var(--clr-primary);
    background: rgba(0, 229, 255, 0.05);
}

.btn-submit {
    width: 100%;
    margin-top: 1rem;
}

.direct-email {
    text-align: center;
    margin-top: 1.5rem;
    font-size: 0.875rem;
    color: var(--clr-text-muted);
}

.direct-email a {
    color: var(--clr-primary);
}

.alert {
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 2rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.alert-success {
    background: rgba(0, 255, 128, 0.1);
    border: 1px solid rgba(0, 255, 128, 0.2);
    color: #00FF80;
}

.alert-error {
    background: rgba(255, 0, 0, 0.1);
    border: 1px solid rgba(255, 0, 0, 0.2);
    color: #FF6B6B;
}

/* Footer */
.footer {
    border-top: 1px solid var(--clr-border);
    padding: 3rem 0;
    text-align: center;
}

.footer-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--clr-text-muted);
    margin-bottom: 1rem;
}

.copyright {
    color: var(--clr-text-muted);
    font-size: 0.875rem;
}

/* Reveal Animations setup */
.reveal-up {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s cubic-bezier(0.5, 0, 0, 1);
}

.reveal-left {
    opacity: 0;
    transform: translateX(-30px);
    transition: all 0.8s cubic-bezier(0.5, 0, 0, 1);
}

.reveal-right {
    opacity: 0;
    transform: translateX(30px);
    transition: all 0.8s cubic-bezier(0.5, 0, 0, 1);
}

.reveal-up.active, .reveal-left.active, .reveal-right.active {
    opacity: 1;
    transform: translate(0);
}

.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }

/* Responsive Design */
@media (max-width: 900px) {
    .about-grid {
        grid-template-columns: 1fr;
    }
    
    .visual-box {
        display: none;
    }
}

@media (max-width: 768px) {
    .desktop-nav {
        display: none;
    }
    
    .menu-toggle {
        display: block;
    }
    
    .hero-content {
        text-align: center;
    }
    
    .hero h1 {
        font-size: clamp(2.5rem, 8vw, 3rem);
    }
    
    .hero-actions {
        justify-content: center;
    }

    .services-timeline::before {
        left: 20px;
    }

    .service-number {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }
    
    .service-item {
        gap: 1rem;
    }
}