/* ============================================
   株式会社ユーワン - Corporate Website Styles
   Theme Color: Orange (#FF6B00)
   ============================================ */

/* CSS Variables */
:root {
    --color-primary: #FF6B00;
    --color-primary-dark: #E55A00;
    --color-primary-light: #FF8533;
    --color-secondary: #FF9500;
    --color-dark: #1a1a1a;
    --color-text: #333333;
    --color-text-light: #666666;
    --color-bg: #ffffff;
    --color-bg-alt: #f8f8f8;
    --color-border: #e0e0e0;
    --font-primary: 'Noto Sans JP', sans-serif;
    --font-accent: 'Montserrat', sans-serif;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.12);
    --transition: all 0.3s ease;
    --header-height: 80px;
}

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

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

body {
    font-family: var(--font-primary);
    color: var(--color-text);
    background-color: var(--color-bg);
    line-height: 1.8;
    overflow-x: hidden;
}

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

ul {
    list-style: none;
}

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

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 16px 40px;
    font-size: 1rem;
    font-weight: 500;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    transition: var(--transition);
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    color: #fff;
    box-shadow: 0 4px 20px rgba(255, 107, 0, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 30px rgba(255, 107, 0, 0.4);
}

.btn-submit {
    width: 100%;
    background: var(--color-primary);
    color: #fff;
    font-size: 1.1rem;
    padding: 18px 40px;
}

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

/* Text Utilities */
.text-orange {
    color: var(--color-primary);
}

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

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

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-text {
    font-family: var(--font-accent);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
}

.nav-list {
    display: flex;
    align-items: center;
    gap: 40px;
}

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

.nav-list a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-primary);
    transition: var(--transition);
}

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

.nav-contact {
    background: var(--color-primary);
    color: #fff !important;
    padding: 10px 24px;
    border-radius: 50px;
}

.nav-contact::after {
    display: none;
}

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

/* Mobile Menu Toggle */
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    width: 30px;
    padding: 5px;
    background: none;
    border: none;
    cursor: pointer;
}

.menu-toggle span {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--color-text);
    transition: var(--transition);
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: calc(var(--header-height) + 40px) 20px 80px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.hero-shape {
    position: absolute;
    border-radius: 50%;
    opacity: 0.1;
}

.hero-shape-1 {
    width: 600px;
    height: 600px;
    background: var(--color-primary);
    top: -200px;
    right: -200px;
    animation: float 8s ease-in-out infinite;
}

.hero-shape-2 {
    width: 400px;
    height: 400px;
    background: var(--color-secondary);
    bottom: -100px;
    left: -100px;
    animation: float 10s ease-in-out infinite reverse;
}

.hero-shape-3 {
    width: 200px;
    height: 200px;
    background: var(--color-primary);
    top: 50%;
    left: 50%;
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-30px); }
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 800px;
}

.hero-subtitle {
    font-family: var(--font-accent);
    font-size: 1rem;
    font-weight: 500;
    color: var(--color-primary);
    letter-spacing: 2px;
    margin-bottom: 20px;
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 30px;
}

.hero-title-line {
    display: block;
}

.hero-description {
    font-size: 1.1rem;
    color: var(--color-text-light);
    margin-bottom: 40px;
    line-height: 2;
}

.hero-scroll {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    font-family: var(--font-accent);
    font-size: 0.8rem;
    color: var(--color-text-light);
    letter-spacing: 1px;
}

.scroll-line {
    width: 1px;
    height: 60px;
    background: linear-gradient(to bottom, var(--color-primary), transparent);
    animation: scrollLine 1.5s ease-in-out infinite;
}

@keyframes scrollLine {
    0% { transform: scaleY(0); transform-origin: top; }
    50% { transform: scaleY(1); transform-origin: top; }
    50.1% { transform: scaleY(1); transform-origin: bottom; }
    100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ============================================
   Section Common Styles
   ============================================ */
section {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-label {
    display: inline-block;
    font-family: var(--font-accent);
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-primary);
    letter-spacing: 2px;
    margin-bottom: 15px;
}

.section-label-white {
    color: rgba(255, 255, 255, 0.8);
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 20px;
}

.section-title-white {
    color: #fff;
}

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

/* ============================================
   Service Section
   ============================================ */
.service {
    background: var(--color-bg-alt);
}

.service-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.service-card {
    background: var(--color-bg);
    padding: 40px;
    border-radius: 16px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

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

.service-icon {
    margin-bottom: 24px;
}

.service-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--color-dark);
}

.service-text {
    font-size: 0.95rem;
    color: var(--color-text-light);
    line-height: 1.8;
}

/* ============================================
   About Section
   ============================================ */
.about-inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.about-content .section-label,
.about-content .section-title {
    text-align: left;
}

.about-text {
    font-size: 1rem;
    color: var(--color-text-light);
    margin-bottom: 20px;
}

.about-features {
    margin-top: 40px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.about-feature {
    display: flex;
    align-items: center;
    gap: 16px;
}

.feature-number {
    font-family: var(--font-accent);
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--color-primary);
}

.feature-text {
    font-size: 1rem;
    font-weight: 500;
}

.about-visual {
    position: relative;
}

.about-image-wrapper {
    position: relative;
}

.about-pattern {
    position: absolute;
    top: -20px;
    right: -20px;
    width: 100%;
    height: 100%;
    border: 2px solid var(--color-primary);
    border-radius: 16px;
    opacity: 0.3;
}

.about-image {
    position: relative;
    background: var(--color-bg);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

/* ============================================
   Company Section
   ============================================ */
.company {
    background: var(--color-bg-alt);
}

.company-table-wrapper {
    max-width: 900px;
    margin: 0 auto;
    background: var(--color-bg);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

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

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

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

.company-table th,
.company-table td {
    padding: 24px 30px;
    text-align: left;
    vertical-align: top;
}

.company-table th {
    width: 180px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    color: #fff;
    font-weight: 500;
    font-size: 0.95rem;
}

.company-table td {
    font-size: 0.95rem;
    color: var(--color-text);
}

.business-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.business-list li {
    position: relative;
    padding-left: 20px;
}

.business-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 10px;
    width: 8px;
    height: 8px;
    background: var(--color-primary);
    border-radius: 50%;
}

/* ============================================
   Contact Section
   ============================================ */
.contact {
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    color: #fff;
}

.contact-inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: start;
}

.contact-info .section-label,
.contact-info .section-title {
    text-align: left;
}

.contact-text {
    font-size: 1rem;
    opacity: 0.9;
    margin-bottom: 40px;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.contact-item {
    display: flex;
    gap: 16px;
}

.contact-icon {
    flex-shrink: 0;
    width: 50px;
    height: 50px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.contact-item-content {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.contact-label {
    font-size: 0.85rem;
    opacity: 0.8;
}

.contact-value {
    font-size: 1.1rem;
    font-weight: 500;
}

.contact-value:hover {
    text-decoration: underline;
}

.contact-note {
    font-size: 0.8rem;
    opacity: 0.7;
}

/* Contact Form */
.contact-form-wrapper {
    background: var(--color-bg);
    padding: 40px;
    border-radius: 16px;
    box-shadow: var(--shadow-lg);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text);
}

.required {
    color: var(--color-primary);
    font-size: 0.8rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 14px 16px;
    font-size: 1rem;
    font-family: var(--font-primary);
    border: 2px solid var(--color-border);
    border-radius: 8px;
    transition: var(--transition);
    background: var(--color-bg);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: #aaa;
}

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

/* ============================================
   Footer
   ============================================ */
.footer {
    background: var(--color-dark);
    color: #fff;
    padding: 60px 0 30px;
}

.footer-inner {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 60px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-accent);
    font-size: 1.3rem;
    font-weight: 700;
    color: #fff;
}

.footer-description {
    margin-top: 20px;
    font-size: 0.9rem;
    opacity: 0.7;
    line-height: 1.8;
}

.footer-nav {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.footer-nav-group h4 {
    font-family: var(--font-accent);
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--color-primary);
}

.footer-nav-group ul {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-nav-group a,
.footer-nav-group li {
    font-size: 0.9rem;
    opacity: 0.7;
    transition: var(--transition);
}

.footer-nav-group a:hover {
    opacity: 1;
    color: var(--color-primary);
}

.footer-bottom {
    padding-top: 30px;
    text-align: center;
}

.copyright {
    font-size: 0.85rem;
    opacity: 0.5;
}

/* ============================================
   Back to Top Button
   ============================================ */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--color-primary);
    color: #fff;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    box-shadow: var(--shadow-md);
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--color-primary-dark);
    transform: translateY(-3px);
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 1024px) {
    .about-inner,
    .contact-inner {
        grid-template-columns: 1fr;
        gap: 50px;
    }

    .about-content .section-label,
    .about-content .section-title,
    .contact-info .section-label,
    .contact-info .section-title {
        text-align: center;
    }

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

    .about-features {
        align-items: center;
    }

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

    .contact-details {
        align-items: center;
    }

    .footer-inner {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }

    .footer-logo {
        justify-content: center;
    }

    .footer-nav {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    :root {
        --header-height: 70px;
    }

    section {
        padding: 70px 0;
    }

    .section-title {
        font-size: 2rem;
    }

    /* Navigation */
    .nav {
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        background: var(--color-bg);
        padding: 30px 20px;
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition);
        box-shadow: var(--shadow-md);
    }

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

    .nav-list {
        flex-direction: column;
        gap: 20px;
    }

    .menu-toggle {
        display: flex;
    }

    .menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(6px, 6px);
    }

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

    .menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(6px, -6px);
    }

    /* Service Grid */
    .service-grid {
        grid-template-columns: 1fr;
    }

    .service-card {
        padding: 30px;
    }

    /* Company Table */
    .company-table th,
    .company-table td {
        padding: 16px 20px;
        display: block;
        width: 100%;
    }

    .company-table th {
        background: var(--color-primary);
    }

    /* Footer */
    .footer-nav {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    /* Back to Top */
    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 44px;
        height: 44px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }

    .hero-description {
        font-size: 1rem;
    }

    .btn {
        padding: 14px 30px;
        font-size: 0.95rem;
    }

    .contact-form-wrapper {
        padding: 30px 20px;
    }
}