/* ============================================
   リセット & 基本スタイル
============================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Sans JP', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
}

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

a {
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
}

ul {
    list-style: none;
}

/* ============================================
   コンテナ
============================================ */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ============================================
   ヘッダー & ナビゲーション
============================================ */
#header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: #1a4d7a;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    z-index: 1000;
}

.navbar {
    padding: 0;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 20px;
}

.nav-brand {
    display: flex;
    align-items: center;
}

.nav-brand img {
    height: 50px;
    width: auto;
}

.nav-menu {
    display: flex;
    gap: 2rem;
}

.nav-link {
    color: #fff;
    font-weight: 500;
    padding: 0.5rem 0;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: #fff;
    transition: width 0.3s ease;
}

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

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background-color: #fff;
    transition: all 0.3s ease;
}

/* ============================================
   メインビジュアル（ヒーローセクション）
============================================ */
.hero {
    margin-top: 70px;
    background-image: url('../img/hero-background.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    color: #fff;
    padding: 150px 20px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(26, 77, 122, 0.85) 0%, rgba(37, 99, 166, 0.75) 100%);
    z-index: 0;
}

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

.hero-title {
    font-size: 2.5rem;
    font-weight: 400;
    margin-bottom: 1.5rem;
    letter-spacing: 3px;
    text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.3);
}

.hero-company {
    font-size: 4rem;
    font-weight: 700;
    margin-bottom: 0;
    letter-spacing: 5px;
    text-shadow: 3px 3px 10px rgba(0, 0, 0, 0.4);
}

.hero-subtitle {
    font-size: 1.2rem;
    font-weight: 300;
    opacity: 0.9;
}

/* ============================================
   セクション共通スタイル
============================================ */
section {
    padding: 80px 20px;
}

.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 1rem;
    color: #1a4d7a;
    font-weight: 700;
    position: relative;
    padding-bottom: 1rem;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, #1a4d7a, #2563a6);
    border-radius: 2px;
}

.section-subtitle {
    text-align: center;
    color: #666;
    margin-bottom: 3rem;
    font-size: 1.1rem;
}

/* ============================================
   About Us セクション
============================================ */
.about {
    background-color: #f8f9fa;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 3rem;
    align-items: start;
    margin-top: 3rem;
}

.about-image {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding-top: 3.3rem;
}

.about-image img {
    width: 100%;
    max-width: 300px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.about-text {
    display: flex;
    flex-direction: column;
}

.about-text h3 {
    font-size: 1.8rem;
    color: #1a4d7a;
    margin-bottom: 1.5rem;
    margin-top: 0;
    text-align: left;
}

.company-info {
    background: #fff;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    margin-bottom: 2rem;
}

.info-row {
    display: grid;
    grid-template-columns: 120px 1fr;
    padding: 1rem 0;
    border-bottom: 1px solid #e0e0e0;
}

.info-row:last-child {
    border-bottom: none;
}

.info-label {
    font-weight: 700;
    color: #1a4d7a;
}

.info-value {
    color: #333;
}

.about-description {
    line-height: 1.8;
    color: #555;
}

/* ============================================
   取り扱い商品セクション
============================================ */
.products {
    background-color: #fff;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.product-card {
    background: #fff;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 30px rgba(26, 77, 122, 0.2);
}

.product-image {
    height: 250px;
    overflow: hidden;
    background-color: #f8f9fa;
    display: flex;
    align-items: center;
    justify-content: center;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.product-image.placeholder {
    background: linear-gradient(135deg, #1a4d7a 0%, #2563a6 100%);
}

.product-image.placeholder span {
    color: #fff;
    font-size: 1.5rem;
    font-weight: 700;
}

.product-name {
    font-size: 1.3rem;
    color: #1a4d7a;
    padding: 1.5rem 1.5rem 0.5rem;
    font-weight: 700;
}

.product-description {
    padding: 0 1.5rem 1.5rem;
    color: #555;
    line-height: 1.6;
}

/* ============================================
   オリジナルブランドセクション
============================================ */
.brands {
    background: linear-gradient(135deg, #1a4d7a 0%, #2563a6 100%);
    color: #fff;
}

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

.brands .section-title::after {
    background: #fff;
}

.brands-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 3rem;
    margin-top: 3rem;
}

.brands-content-single {
    display: flex;
    justify-content: center;
    margin-top: 3rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.brand-item {
    background: rgba(255, 255, 255, 0.1);
    padding: 2.5rem;
    border-radius: 10px;
    text-align: center;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: all 0.3s ease;
}

.brand-item:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-5px);
}

.brand-logo {
    height: 120px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.brand-logo img {
    max-height: 100%;
    width: auto;
    margin: 0 auto;
}

.brand-item h3 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
    font-weight: 700;
}

.brand-item p {
    line-height: 1.8;
    opacity: 0.9;
}

/* ============================================
   ネットショップセクション
============================================ */
.shop {
    background-color: #f8f9fa;
}

.shop-links {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.shop-button {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    border-radius: 10px;
    font-size: 1.3rem;
    font-weight: 700;
    color: #fff;
    transition: all 0.3s ease;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.shop-button:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}

.shop-button.rakuten {
    background: linear-gradient(135deg, #bf0000 0%, #e60012 100%);
}

.shop-button.amazon {
    background: linear-gradient(135deg, #f90 0%, #ff9900 100%);
}

.shop-button.yahoo {
    background: linear-gradient(135deg, #ff0033 0%, #ff3366 100%);
}

.shop-button.stores {
    background: linear-gradient(135deg, #1a4d7a 0%, #2563a6 100%);
}

/* ============================================
   お問い合わせセクション
============================================ */
.contact {
    background-color: #fff;
}

.contact-info {
    display: flex;
    justify-content: center;
    margin-top: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.contact-item {
    background: #f8f9fa;
    padding: 2.5rem;
    border-radius: 10px;
    text-align: center;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.contact-item:hover {
    border-color: #1a4d7a;
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(26, 77, 122, 0.1);
}

.contact-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #fff;
    border-radius: 50%;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.contact-icon img {
    width: 40px;
    height: 40px;
    margin: 0 auto;
}

.contact-item h3 {
    font-size: 1.5rem;
    color: #1a4d7a;
    margin-bottom: 1rem;
    font-weight: 700;
}

.contact-detail {
    color: #666;
    line-height: 1.8;
    margin-bottom: 1rem;
}

.contact-email {
    display: inline-block;
    font-size: 1.3rem;
    font-weight: 600;
    color: #1a4d7a;
    padding: 0.8rem 2rem;
    background: #fff;
    border-radius: 50px;
    transition: all 0.3s ease;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
    margin-top: 1rem;
}

.contact-email:hover {
    background: #1a4d7a;
    color: #fff;
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(26, 77, 122, 0.3);
}

/* ============================================
   フッター
============================================ */
.footer {
    background-color: #1a4d7a;
    color: #fff;
    padding: 3rem 20px 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 3rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

.footer-info h3 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
    font-weight: 700;
}

.footer-tagline {
    font-size: 1rem;
    margin-bottom: 1.5rem;
    opacity: 0.9;
}

.footer-address {
    line-height: 1.8;
    opacity: 0.8;
}

.footer-nav h4 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    font-weight: 700;
}

.footer-nav ul {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.footer-nav a {
    opacity: 0.8;
    transition: opacity 0.3s ease;
}

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

.footer-bottom {
    padding-top: 2rem;
    text-align: center;
    opacity: 0.7;
}

/* ============================================
   レスポンシブデザイン
============================================ */

/* タブレット */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        background-color: #1a4d7a;
        flex-direction: column;
        padding: 2rem;
        gap: 1rem;
        transition: left 0.3s ease;
        box-shadow: 0 5px 10px rgba(0, 0, 0, 0.1);
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-toggle {
        display: flex;
    }

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

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

    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -7px);
    }

    .hero {
        padding: 100px 20px;
    }

    .hero-title {
        font-size: 1.6rem;
        letter-spacing: 2px;
    }

    .hero-company {
        font-size: 2.8rem;
        letter-spacing: 3px;
    }

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

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

    .about-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .products-grid {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}

/* スマートフォン */
@media (max-width: 480px) {
    .nav-brand img {
        height: 40px;
    }

    .hero {
        padding: 80px 20px;
    }

    .hero-title {
        font-size: 1.3rem;
        letter-spacing: 1px;
    }

    .hero-company {
        font-size: 2.2rem;
        letter-spacing: 2px;
    }

    section {
        padding: 60px 20px;
    }

    .section-title {
        font-size: 1.8rem;
    }

    .info-row {
        grid-template-columns: 1fr;
        gap: 0.5rem;
    }

    .shop-links {
        grid-template-columns: 1fr;
    }

    .contact-info {
        grid-template-columns: 1fr;
    }
}