:root {
    /* カラーパレット */
    --color-primary: #FF5A00;
    /* テーマカラー：オレンジ */
    --color-primary-dark: #D94A00;
    --color-primary-light: #FF884D;
    --color-secondary: #8B0029;
    /* ディープレッド（ロゴイメージ） */
    --color-bg-dark: #111111;
    /* 炭をイメージした黒 */
    --color-bg-light: #FFFFFF;
    --color-bg-gray: #F9F9F9;
    --color-text-main: #222222;
    --color-text-muted: #666666;

    /* フォント */
    --font-jp: 'Noto Sans JP', sans-serif;
    --font-en: 'Outfit', sans-serif;

    /* サイズ・レイアウト */
    --header-height: 80px;
    --container-width: 1200px;
}

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

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

body {
    font-family: var(--font-jp);
    color: var(--color-text-main);
    background-color: var(--color-bg-light);
    line-height: 1.7;
    overflow-x: hidden;
}

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

ul {
    list-style: none;
}

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

.pc-only {
    display: block;
}

.sp-only {
    display: none;
}

/* ======== 共通コンポーネント ======== */
.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-en-title {
    font-family: var(--font-en);
    font-size: 1.1rem;
    color: var(--color-primary);
    font-weight: 700;
    letter-spacing: 0.1em;
    margin-bottom: 0.5rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 900;
    color: var(--color-text-main);
    position: relative;
    display: inline-block;
}

.highlight {
    color: var(--color-primary);
}

.btn-primary {
    display: inline-block;
    padding: 1.2rem 3rem;
    background: linear-gradient(135deg, var(--color-primary) 0%, #ff2a00 100%);
    color: #fff;
    font-weight: 700;
    font-size: 1.1rem;
    border-radius: 50px;
    box-shadow: 0 10px 20px rgba(255, 90, 0, 0.3);
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 25px rgba(255, 90, 0, 0.4);
    background: transparent;
    color: var(--color-primary);
    border-color: var(--color-primary);
}

/* ======== ヘッダー ======== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 100;
    transition: all 0.3s ease;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.header.scrolled {
    height: 70px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
}

.header-inner {
    max-width: var(--container-width);
    height: 100%;
    margin: 0 auto;
    padding: 0 5%;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-text {
    font-size: 1.8rem;
    font-weight: 900;
    color: var(--color-text-main);
    letter-spacing: 0.05em;
}

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

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

.nav-list a {
    font-weight: 500;
    font-size: 1rem;
}

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

.btn-contact-header {
    background: var(--color-primary);
    color: #fff;
    padding: 0.6rem 1.5rem;
    border-radius: 30px;
    font-weight: 700;
    font-size: 0.9rem;
}

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

.menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 20px;
    background: transparent;
    border: none;
    cursor: pointer;
    z-index: 101;
}

.menu-toggle span {
    width: 100%;
    height: 2px;
    background-color: var(--color-text-main);
    transition: all 0.3s ease;
}

/* ======== ヒーローセクション ======== */
.hero {
    position: relative;
    min-height: 100vh;
    background: radial-gradient(circle at center, #2a2a2a 0%, #111111 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    overflow: hidden;
    padding: var(--header-height) 5% 0;
}

.hero::before {
    content: '';
    position: absolute;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(255, 90, 0, 0.12) 0%, rgba(255, 90, 0, 0) 70%);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 1;
    border-radius: 50%;
    animation: pulse 4s ease-in-out infinite alternate;
}

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

    100% {
        transform: translate(-50%, -50%) scale(1.1);
        opacity: 1;
    }
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    width: 100%;
    max-width: 900px;
}

.hero-subtitle {
    font-family: var(--font-en);
    font-size: 1.2rem;
    letter-spacing: 0.3em;
    color: var(--color-primary);
    margin-bottom: 1.5rem;
    font-weight: 700;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 900;
    line-height: 1.5;
    margin-bottom: 2rem;
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

.hero-text {
    font-size: 1.2rem;
    color: #cccccc;
    margin-bottom: 3.5rem;
    line-height: 1.8;
}

.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    z-index: 2;
}

.scroll-indicator span {
    font-family: var(--font-en);
    font-size: 0.8rem;
    letter-spacing: 0.2em;
    color: rgba(255, 255, 255, 0.6);
}

.scroll-indicator .line {
    width: 1px;
    height: 60px;
    background: rgba(255, 255, 255, 0.2);
    position: relative;
    overflow: hidden;
}

.scroll-indicator .line::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 50%;
    background: var(--color-primary);
    animation: scrollDrop 1.5s cubic-bezier(0.77, 0, 0.175, 1) infinite;
}

@keyframes scrollDrop {
    0% {
        transform: translateY(-100%);
    }

    100% {
        transform: translateY(200%);
    }
}

/* ======== コンセプトセクション ======== */
.concept {
    padding: 100px 0;
    background-color: var(--color-bg-light);
}

.concept-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 4rem;
}

.concept-text-box {
    flex: 1;
}

.concept-headline {
    font-size: 2rem;
    font-weight: 900;
    margin-bottom: 2rem;
    line-height: 1.5;
}

.concept-text {
    color: var(--color-text-muted);
    font-size: 1.05rem;
}

.concept-image-box {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}

/* CSSで表現したテンパイル（炭と炎）のグラフィック */
.tempile-graphic {
    position: relative;
    width: 300px;
    height: 300px;
    background: var(--color-bg-gray);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    box-shadow: inset 0 0 50px rgba(0, 0, 0, 0.05);
}

.charcoal {
    position: absolute;
    width: 100px;
    height: 40px;
    background: linear-gradient(135deg, #333 0%, #111 100%);
    border-radius: 8px;
    display: flex;
    justify-content: center;
    align-items: center;
    color: var(--color-primary);
    font-family: var(--font-en);
    font-weight: 900;
    font-size: 1.2rem;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2), inset 0 2px 2px rgba(255, 255, 255, 0.1);
    z-index: 2;
}

.charcoal.c1 {
    transform: rotate(-15deg) translate(-20px, -30px);
}

.charcoal.c2 {
    transform: rotate(25deg) translate(30px, 10px);
}

.charcoal.c3 {
    transform: rotate(-5deg) translate(-10px, 40px);
}

.fire-glow {
    position: absolute;
    width: 150px;
    height: 150px;
    background: radial-gradient(circle, rgba(255, 90, 0, 0.4) 0%, rgba(255, 90, 0, 0) 70%);
    border-radius: 50%;
    z-index: 1;
    animation: firePulse 2s ease-in-out infinite alternate;
}

@keyframes firePulse {
    0% {
        transform: scale(1);
        opacity: 0.6;
    }

    100% {
        transform: scale(1.3);
        opacity: 1;
    }
}

/* ======== レスポンシブ (1024px以下) ======== */
@media screen and (max-width: 1024px) {
    .hero-title {
        font-size: 2.8rem;
    }
}

/* ======== レスポンシブ (768px以下 - SP) ======== */
@media screen and (max-width: 768px) {
    .pc-only {
        display: none;
    }

    .sp-only {
        display: block;
    }

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

    /* ヘッダーSP */
    .menu-toggle {
        display: flex;
    }

    .global-nav {
        position: fixed;
        top: var(--header-height);
        left: 0;
        width: 100%;
        height: calc(100vh - var(--header-height));
        background: #fff;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 3rem;
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all 0.4s cubic-bezier(0.77, 0, 0.175, 1);
        z-index: 99;
    }

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

    .nav-list {
        flex-direction: column;
        align-items: center;
        gap: 2rem;
    }

    .nav-list a {
        font-size: 1.2rem;
    }

    .menu-toggle.active span:nth-child(1) {
        transform: translateY(9px) rotate(45deg);
    }

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

    .menu-toggle.active span:nth-child(3) {
        transform: translateY(-9px) rotate(-45deg);
    }

    /* ヒーローSP */
    .hero {
        padding-top: var(--header-height);
    }

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

    .hero-text {
        font-size: 1rem;
        margin-bottom: 2rem;
    }

    .btn-primary {
        padding: 1rem 2rem;
        font-size: 1rem;
        width: 100%;
        max-width: 300px;
    }

    /* コンセプトSP */
    .concept-content {
        flex-direction: column;
        gap: 3rem;
    }

    .concept-headline {
        font-size: 1.6rem;
    }

    .concept-headline br {
        display: none;
    }
}

/* ======== サービスセクション ======== */
.service {
    padding: 100px 0;
    background-color: var(--color-bg-gray);
}

.service-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.service-card {
    background: #fff;
    padding: 40px 30px;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.03);
    transition: all 0.3s ease;
    border-bottom: 5px solid transparent;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.08);
    border-color: var(--color-primary);
}

.card-icon {
    width: 60px;
    height: 60px;
    background: rgba(255, 90, 0, 0.1);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 25px;
}

.card-icon span {
    font-family: var(--font-en);
    font-weight: 900;
    font-size: 1.5rem;
    color: var(--color-primary);
}

.card-title {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 15px;
}

.card-text {
    color: var(--color-text-muted);
    font-size: 0.95rem;
}

/* ======== 焼肉店様向け提案セクション ======== */
.yakiniku {
    position: relative;
    padding: 120px 0;
    background: linear-gradient(135deg, var(--color-bg-dark) 0%, #3a0000 100%);
    color: #fff;
    overflow: hidden;
}

.yakiniku-inner {
    position: relative;
    z-index: 2;
}

.yakiniku-content {
    max-width: 600px;
}

.yakiniku-text {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-top: 1rem;
    margin-bottom: 2.5rem;
    color: rgba(255, 255, 255, 0.85);
}

.btn-yakiniku {
    background: #fff;
    color: var(--color-primary);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.3);
}

.btn-yakiniku:hover {
    background: var(--color-bg-dark);
    color: #fff;
    box-shadow: 0 10px 20px rgba(255, 90, 0, 0.3);
    border-color: var(--color-primary);
}

/* 網と火の装飾的な背景 */
.yakiniku-bg {
    position: absolute;
    top: 0;
    right: -20%;
    width: 65%;
    height: 100%;
    background: repeating-linear-gradient(45deg,
            rgba(255, 255, 255, 0.03) 0px,
            rgba(255, 255, 255, 0.03) 2px,
            transparent 2px,
            transparent 30px),
        repeating-linear-gradient(-45deg,
            rgba(255, 255, 255, 0.03) 0px,
            rgba(255, 255, 255, 0.03) 2px,
            transparent 2px,
            transparent 30px);
    z-index: 1;
    border-radius: 50% 0 0 50%;
}

.yakiniku-bg::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 40%;
    width: 350px;
    height: 350px;
    background: radial-gradient(circle, rgba(255, 90, 0, 0.4) 0%, transparent 70%);
    transform: translate(-50%, -50%);
    border-radius: 50%;
    animation: firePulse 3s infinite alternate;
}

/* ======== 会社概要とコンタクト ======== */
.company {
    padding: 100px 0;
    background-color: var(--color-bg-light);
}

.company-contact-wrap {
    display: flex;
    justify-content: space-between;
    gap: 60px;
}

.company-info {
    flex: 1;
}

.company-dl {
    width: 100%;
}

.company-dl dt {
    font-weight: 700;
    padding: 15px 0 5px;
    border-top: 1px solid #eee;
}

.company-dl dt:first-child {
    border-top: none;
    padding-top: 0;
}

.company-dl dd {
    padding-bottom: 15px;
    color: var(--color-text-muted);
}

.contact-form {
    flex: 1.2;
    background: var(--color-bg-gray);
    padding: 40px 50px;
    border-radius: 20px;
}

.contact-title {
    font-size: 1.6rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.contact-desc {
    color: var(--color-text-muted);
    font-size: 0.95rem;
    margin-bottom: 30px;
}

.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 700;
    font-size: 0.9rem;
}

.required {
    background: var(--color-primary);
    color: #fff;
    font-size: 0.7rem;
    padding: 2px 8px;
    border-radius: 10px;
    margin-left: 10px;
    vertical-align: middle;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 15px;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-family: inherit;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(255, 90, 0, 0.1);
}

.form-btn {
    width: 100%;
    border: none;
    cursor: pointer;
    margin-top: 10px;
}

/* ======== フッター ======== */
.footer {
    background: var(--color-bg-dark);
    color: #fff;
    padding: 50px 0;
    text-align: center;
}

.footer-logo {
    display: block;
    font-size: 1.8rem;
    font-weight: 900;
    margin-bottom: 20px;
    color: #fff;
}

.copyright {
    font-family: var(--font-en);
    letter-spacing: 0.1em;
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.5);
}

/* ======== 追加のレスポンシブ (1024px, 768px用) ======== */
@media screen and (max-width: 1024px) {
    .service-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .company-contact-wrap {
        flex-direction: column;
    }
}

@media screen and (max-width: 768px) {
    .service-grid {
        grid-template-columns: 1fr;
    }

    .yakiniku-bg {
        width: 100%;
        border-radius: 0;
        opacity: 0.2;
    }

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