/* ==========================================================================
   株式会社イージードライブ - メインスタイルシート
   ========================================================================== */

/* --------------------------------------------------------------------------
   CSS Variables
   -------------------------------------------------------------------------- */
:root {
    /* Colors - 知的で信頼感のあるブルー系 */
    --color-primary: #2563eb;
    --color-primary-dark: #1d4ed8;
    --color-primary-light: #3b82f6;
    --color-secondary: #0f172a;
    --color-accent: #06b6d4;

    /* Neutral Colors */
    --color-white: #ffffff;
    --color-gray-50: #f8fafc;
    --color-gray-100: #f1f5f9;
    --color-gray-200: #e2e8f0;
    --color-gray-300: #cbd5e1;
    --color-gray-400: #94a3b8;
    --color-gray-500: #64748b;
    --color-gray-600: #475569;
    --color-gray-700: #334155;
    --color-gray-800: #1e293b;
    --color-gray-900: #0f172a;

    /* Typography */
    --font-family: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    --spacing-4xl: 6rem;

    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 300ms ease;
    --transition-slow: 500ms ease;

    /* Container */
    --container-max: 1200px;
    --container-padding: 1.5rem;
}

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

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

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.8;
    color: var(--color-gray-700);
    background-color: var(--color-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

ul, ol {
    list-style: none;
}

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

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

input, textarea, select {
    font-family: inherit;
    font-size: inherit;
}

/* --------------------------------------------------------------------------
   Utility Classes
   -------------------------------------------------------------------------- */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.pc-only {
    display: none;
}

@media (min-width: 768px) {
    .pc-only {
        display: inline;
    }
}

/* --------------------------------------------------------------------------
   Header
   -------------------------------------------------------------------------- */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    transition: box-shadow var(--transition-base);
}

.header.scrolled {
    box-shadow: var(--shadow-md);
}

.header-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.logo-icon {
    font-size: 1.8rem;
    color: #2563eb;
    transform: scaleX(-1);
}

.footer .logo-icon {
    color: #60a5fa;
}

.logo-text {
    font-family: 'Poppins', sans-serif;
    font-weight: 600;
    font-size: 1.4rem;
    color: var(--color-secondary);
    letter-spacing: 0.08em;
}

.nav {
    display: none;
}

@media (min-width: 1024px) {
    .nav {
        display: block;
    }
}

.nav-list {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
}

.nav-link {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-gray-600);
    transition: color var(--transition-fast);
}

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

.nav-contact {
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--color-primary);
    color: var(--color-white) !important;
    border-radius: var(--radius-full);
}

.nav-contact:hover {
    background: var(--color-primary-dark);
}

/* Hamburger Menu */
.hamburger {
    display: flex;
    flex-direction: column;
    gap: 5px;
    padding: var(--spacing-sm);
}

@media (min-width: 1024px) {
    .hamburger {
        display: none;
    }
}

.hamburger span {
    width: 24px;
    height: 2px;
    background: var(--color-gray-700);
    border-radius: var(--radius-full);
    transition: var(--transition-fast);
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile Navigation */
@media (max-width: 1023px) {
    .nav {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--color-white);
        padding: var(--spacing-xl);
        box-shadow: var(--shadow-lg);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition-base);
    }

    .nav.active {
        display: block;
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .nav-list {
        flex-direction: column;
        gap: var(--spacing-lg);
    }

    .nav-link {
        font-size: var(--font-size-lg);
    }
}

/* --------------------------------------------------------------------------
   Hero Section
   -------------------------------------------------------------------------- */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 120px var(--container-padding) var(--spacing-4xl);
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 50%, #f0fdf4 100%);
    z-index: -2;
}

.hero-bg::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 80%;
    height: 150%;
    background: radial-gradient(circle, rgba(37, 99, 235, 0.08) 0%, transparent 60%);
    z-index: -1;
}

.hero-bg::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -20%;
    width: 60%;
    height: 100%;
    background: radial-gradient(circle, rgba(6, 182, 212, 0.06) 0%, transparent 60%);
    z-index: -1;
}

.hero-content {
    text-align: center;
    max-width: 800px;
}

.hero-subtitle {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-lg);
    background: rgba(37, 99, 235, 0.1);
    color: var(--color-primary);
    font-size: var(--font-size-sm);
    font-weight: 500;
    letter-spacing: 0.1em;
    border-radius: var(--radius-full);
    margin-bottom: var(--spacing-lg);
}

.hero-title {
    font-size: clamp(2rem, 5vw, var(--font-size-5xl));
    font-weight: 700;
    color: var(--color-secondary);
    line-height: 1.3;
    margin-bottom: var(--spacing-xl);
}

.hero-title .highlight {
    color: var(--color-primary);
    position: relative;
}

.hero-title .highlight::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 8px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    opacity: 0.3;
    border-radius: var(--radius-full);
}

.hero-description {
    font-size: var(--font-size-lg);
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-2xl);
    line-height: 2;
}

.hero-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    justify-content: center;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-base);
    font-weight: 500;
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
}

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

.btn-primary:hover {
    background: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: var(--color-white);
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
}

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

.btn-large {
    padding: var(--spacing-lg) var(--spacing-2xl);
    font-size: var(--font-size-lg);
}

/* Hero Scroll Indicator */
.hero-scroll {
    position: absolute;
    bottom: var(--spacing-2xl);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--color-gray-400);
    font-size: var(--font-size-xs);
    letter-spacing: 0.1em;
}

.scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, var(--color-gray-400), transparent);
    animation: scrollLine 2s infinite;
}

@keyframes scrollLine {
    0% {
        transform: scaleY(0);
        transform-origin: top;
    }
    50% {
        transform: scaleY(1);
        transform-origin: top;
    }
    51% {
        transform-origin: bottom;
    }
    100% {
        transform: scaleY(0);
        transform-origin: bottom;
    }
}

/* --------------------------------------------------------------------------
   Section Common Styles
   -------------------------------------------------------------------------- */
section {
    padding: var(--spacing-4xl) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.section-label {
    display: inline-block;
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-primary);
    letter-spacing: 0.15em;
    text-transform: uppercase;
    margin-bottom: var(--spacing-sm);
}

.section-title {
    font-size: clamp(1.75rem, 4vw, var(--font-size-4xl));
    font-weight: 700;
    color: var(--color-secondary);
    margin-bottom: var(--spacing-md);
}

.section-description {
    font-size: var(--font-size-lg);
    color: var(--color-gray-500);
    max-width: 600px;
    margin: 0 auto;
}

/* --------------------------------------------------------------------------
   About Section
   -------------------------------------------------------------------------- */
.about {
    background: var(--color-white);
}

.about-content {
    display: grid;
    gap: var(--spacing-3xl);
    align-items: center;
}

@media (min-width: 768px) {
    .about-content {
        grid-template-columns: 1fr 1fr;
    }
}

.about-lead {
    font-size: var(--font-size-xl);
    font-weight: 500;
    color: var(--color-secondary);
    margin-bottom: var(--spacing-xl);
    line-height: 1.8;
}

.about-text p {
    margin-bottom: var(--spacing-lg);
}

.about-image {
    display: flex;
    justify-content: center;
}

.about-image-inner {
    position: relative;
    width: 280px;
    height: 280px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.about-icon {
    width: 200px;
    height: 200px;
    color: var(--color-primary);
    animation: pulse 3s infinite;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.05);
        opacity: 0.8;
    }
}

.about-stats {
    position: absolute;
    bottom: 0;
    right: 0;
    background: var(--color-white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
}

.stat-number {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--color-primary);
    display: block;
    line-height: 1;
}

.stat-unit {
    font-size: var(--font-size-xl);
}

.stat-label {
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
}

/* --------------------------------------------------------------------------
   Services Section
   -------------------------------------------------------------------------- */
.services {
    background: var(--color-gray-50);
}

.services-grid {
    display: grid;
    gap: var(--spacing-xl);
}

@media (min-width: 768px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.service-card {
    background: var(--color-white);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.service-icon {
    width: 60px;
    height: 60px;
    color: var(--color-primary);
    margin-bottom: var(--spacing-lg);
}

.service-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-secondary);
    margin-bottom: var(--spacing-md);
}

.service-description {
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-lg);
}

.service-list {
    border-top: 1px solid var(--color-gray-200);
    padding-top: var(--spacing-lg);
}

.service-list li {
    position: relative;
    padding-left: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
}

.service-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.6em;
    width: 6px;
    height: 6px;
    background: var(--color-accent);
    border-radius: var(--radius-full);
}

/* --------------------------------------------------------------------------
   Features Section
   -------------------------------------------------------------------------- */
.features {
    background: var(--color-white);
}

.features-grid {
    display: grid;
    gap: var(--spacing-2xl);
}

@media (min-width: 768px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.feature-item {
    position: relative;
    padding-left: var(--spacing-3xl);
}

.feature-number {
    position: absolute;
    left: 0;
    top: 0;
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--color-gray-200);
    line-height: 1;
}

.feature-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-secondary);
    margin-bottom: var(--spacing-sm);
}

.feature-description {
    color: var(--color-gray-600);
    font-size: var(--font-size-base);
}

/* --------------------------------------------------------------------------
   Flow Section
   -------------------------------------------------------------------------- */
.flow {
    background: linear-gradient(135deg, var(--color-secondary) 0%, #1e3a5f 100%);
    color: var(--color-white);
}

.flow .section-label {
    color: var(--color-accent);
}

.flow .section-title {
    color: var(--color-white);
}

.flow-steps {
    max-width: 800px;
    margin: 0 auto;
}

.flow-step {
    display: flex;
    gap: var(--spacing-xl);
    position: relative;
    padding-bottom: var(--spacing-2xl);
}

.flow-step:not(:last-child)::after {
    content: '';
    position: absolute;
    left: 20px;
    top: 50px;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--color-accent), transparent);
}

.flow-step-number {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-accent);
    color: var(--color-secondary);
    font-weight: 700;
    border-radius: var(--radius-full);
}

.flow-step-content h3 {
    font-size: var(--font-size-lg);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.flow-step-content p {
    color: var(--color-gray-300);
    font-size: var(--font-size-base);
}

/* --------------------------------------------------------------------------
   Company Section
   -------------------------------------------------------------------------- */
.company {
    background: var(--color-gray-50);
}

.company-info {
    max-width: 800px;
    margin: 0 auto var(--spacing-2xl);
}

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

.company-table tr {
    border-bottom: 1px solid var(--color-gray-200);
}

.company-table th,
.company-table td {
    padding: var(--spacing-lg);
    text-align: left;
    vertical-align: top;
}

.company-table th {
    width: 150px;
    font-weight: 500;
    color: var(--color-gray-500);
    background: var(--color-gray-100);
}

.company-table td {
    color: var(--color-gray-700);
}

.company-table td ul {
    list-style: disc;
    padding-left: var(--spacing-lg);
}

.company-table td li {
    margin-bottom: var(--spacing-xs);
}

@media (max-width: 767px) {
    .company-table th,
    .company-table td {
        display: block;
        width: 100%;
    }

    .company-table th {
        padding-bottom: var(--spacing-sm);
    }

    .company-table td {
        padding-top: var(--spacing-sm);
    }
}

.company-map {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.company-map iframe {
    display: block;
}

/* --------------------------------------------------------------------------
   Contact Section
   -------------------------------------------------------------------------- */
.contact {
    background: var(--color-white);
}

.contact-content {
    max-width: 700px;
    margin: 0 auto;
}

.contact-form {
    background: var(--color-gray-50);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-xl);
}

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group label {
    display: block;
    font-weight: 500;
    color: var(--color-gray-700);
    margin-bottom: var(--spacing-sm);
}

.required {
    color: #ef4444;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-md);
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-md);
    background: var(--color-white);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

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

.form-group textarea {
    resize: vertical;
    min-height: 150px;
}

.form-submit {
    text-align: center;
    margin-top: var(--spacing-xl);
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
.footer {
    background: var(--color-gray-900);
    color: var(--color-gray-400);
    padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer-content {
    display: grid;
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
}

@media (min-width: 768px) {
    .footer-content {
        grid-template-columns: 1fr 2fr;
    }
}

.footer .logo-icon {
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
}

.footer .logo-text {
    color: var(--color-white);
}

.footer-tagline {
    margin-top: var(--spacing-md);
    font-size: var(--font-size-sm);
}

.footer-nav {
    display: grid;
    gap: var(--spacing-2xl);
}

@media (min-width: 480px) {
    .footer-nav {
        grid-template-columns: repeat(2, 1fr);
    }
}

.footer-nav h4 {
    color: var(--color-white);
    font-size: var(--font-size-base);
    font-weight: 500;
    margin-bottom: var(--spacing-md);
}

.footer-nav ul li {
    margin-bottom: var(--spacing-sm);
}

.footer-nav a {
    font-size: var(--font-size-sm);
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--color-gray-800);
    text-align: center;
}

.copyright {
    font-size: var(--font-size-sm);
}

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

.fade-in-up {
    animation: fadeInUp 0.6s ease forwards;
}

/* --------------------------------------------------------------------------
   Responsive Adjustments
   -------------------------------------------------------------------------- */
@media (max-width: 767px) {
    section {
        padding: var(--spacing-3xl) 0;
    }

    .hero {
        padding-top: 100px;
    }

    .hero-description br {
        display: none;
    }
}