:root {
    /* Color Palette */
    --primary-color: #d4af37;
    /* Metallic Gold */
    --secondary-color: #1a1a1a;
    /* Rich Black */
    --accent-color: #8b0000;
    /* Deep Red for Meat */
    --text-color: #f5f5f5;
    /* Off White */
    --text-muted: #a0a0a0;
    --bg-color: #0a0a0a;
    --overlay-bg: rgba(10, 10, 10, 0.85);

    /* Typography */
    --font-serif: "Noto Serif JP", serif;
    --font-sans: "Noto Sans JP", sans-serif;

    /* Transitions */
    --transition-smooth: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
}

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

h1,
h2,
h3,
.serif {
    font-family: var(--font-serif);
    font-weight: 700;
    letter-spacing: 0.1em;
}

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

ul {
    list-style: none;
}

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

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

.section-padding {
    padding: 100px 0;
}

.text-gold {
    color: var(--primary-color);
}

.bg-gold {
    background-color: var(--primary-color);
}

/* Animations */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: var(--transition-smooth);
}

.fade-in.appear {
    opacity: 1;
    transform: translateY(0);
}

/* Header/Nav */
html {
    scroll-padding-top: 86px;
}

header {
    position: sticky;
    top: 0;
    width: 100%;
    z-index: 1000;
    background: transparent;
    transition: var(--transition-smooth);
}

header.scrolled {
    background: var(--overlay-bg);
    backdrop-filter: blur(10px);
    padding: 10px 0;
    border-bottom: 1px solid rgba(212, 175, 55, 0.3);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
}

.logo {
    font-size: 2rem;
    font-family: var(--font-serif);
    font-weight: 700;
    letter-spacing: 0.2em;
    color: var(--primary-color);
    text-shadow: 0 0 10px rgba(0, 0, 0, 0.5);
}

.nav-links {
    display: flex;
    gap: 40px;
}

.nav-links a {
    font-family: var(--font-serif);
    letter-spacing: 0.15em;
    font-size: 0.95rem;
    text-transform: uppercase;
    position: relative;
    padding-bottom: 5px;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 1px;
    background-color: var(--primary-color);
    transition: var(--transition-smooth);
}

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

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

/* Hero Section */
#hero {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero-video-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: -1;
    filter: brightness(0.4);
}

/* Using a placeholder gradient for now, will replace with image */
.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(rgba(0, 0, 0, 0.4), rgba(0, 0, 0, 0.7)), url('焼肉A.png') center/cover no-repeat;
    background-color: #1a1a1a;
    z-index: -1;
    transition: transform 10s ease-out;
}

#hero:hover .hero-bg {
    transform: scale(1.1);
}

.hero-content h1 {
    font-size: clamp(3rem, 10vw, 5rem);
    margin-bottom: 20px;
}

.hero-content p {
    font-size: 1.2rem;
    letter-spacing: 0.3em;
    margin-bottom: 40px;
}

.btn-gold {
    display: inline-block;
    padding: 15px 40px;
    border: 1px solid var(--primary-color);
    color: var(--primary-color);
    letter-spacing: 0.2em;
    transition: var(--transition-smooth);
}

.btn-gold:hover {
    background-color: var(--primary-color);
    color: var(--secondary-color);
    transform: translateY(-5px);
}

/* About/Concept Section */
#about {
    background-color: var(--secondary-color);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-text h2 {
    font-size: 2.5rem;
    margin-bottom: 30px;
}

.about-text p {
    margin-bottom: 20px;
    color: var(--text-muted);
}

.about-image {
    position: relative;
}

.about-image img {
    border: 1px solid var(--primary-color);
    padding: 10px;
}

/* Menu Section */
.menu-category {
    margin-bottom: 60px;
    /* 読みやすさのために幅を制限して中央揃え */
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.menu-category h3 {
    text-align: center;
    margin-bottom: 40px;
    border-bottom: 1px solid rgba(212, 175, 55, 0.3);
    padding-bottom: 10px;
    display: inline-block;
    left: 50%;
    position: relative;
    transform: translateX(-50%);
    font-size: 1.5rem;
    letter-spacing: 0.2em;
}

.menu-item {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: 25px;
    border-bottom: 1px dotted rgba(255, 255, 255, 0.1);
    padding-bottom: 8px;
    transition: var(--transition-smooth);
}

.menu-item:hover {
    padding-left: 10px;
    border-bottom-color: var(--primary-color);
}

.item-name {
    font-family: var(--font-serif);
    font-size: 1.1rem;
    letter-spacing: 0.1em;
}

.item-desc {
    display: block;
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 5px;
}

.item-price {
    font-family: var(--font-serif);
    color: var(--primary-color);
    font-weight: 700;
    white-space: nowrap;
    margin-left: 40px;
    /* 名前との間隔を確保 */

    /* 価格を左寄せにしてラインを統一 */
    min-width: 150px;
    text-align: left;
    font-feature-settings: "palt";
}

/* Responsive Adjustments */
@media (max-width: 768px) {
    .nav-links {
        display: none;
        /* In a real app, you'd add a hamburger menu */
    }

    .about-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .about-text h2 {
        font-size: 2rem;
    }

    .section-padding {
        padding: 60px 0;
    }

    .hero-content h1 {
        font-size: 2.5rem;
    }
}

/* Footer / Access */
footer {
    padding: 60px 0;
    background-color: #000;
    text-align: center;
    border-top: 1px solid rgba(212, 175, 55, 0.2);
}

.footer-info {
    margin-top: 30px;
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* デモヘッダー用スタイル */
.demo-head {
    padding: 40px 0 22px;
    background: #0b1220;
    color: #fff;
    position: relative;
    z-index: 1001;
}

.demo-head__inner {
    width: min(1100px, 92%);
    margin: 0 auto;
}

.demo-badge {
    display: inline-block;
    padding: 6px 10px;
    border-radius: 999px;
    background: rgba(245, 158, 11, 0.18);
    border: 1px solid rgba(245, 158, 11, 0.35);
    color: #f59e0b;
    font-weight: 800;
    margin-bottom: 10px;
}

.demo-title {
    font-size: 1.9rem;
    font-weight: 900;
    margin-bottom: 10px;
    line-height: 1.25;
    color: #fff;
}

.demo-desc {
    color: rgba(255, 255, 255, 0.85);
    line-height: 1.7;
    max-width: 920px;
}

.demo-actions {
    display: flex;
    gap: 12px;
    margin: 16px 0 8px;
    flex-wrap: wrap;
}

.demo-note {
    color: rgba(255, 255, 255, 0.65);
    font-size: 0.9rem;
}

/* 既存の .btn が無い/弱い場合に備えて最低限の見た目 */
.demo-actions .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    padding: 10px 16px;
    border-radius: 999px;
    font-weight: 800;
    text-decoration: none;
    white-space: nowrap;
}

.demo-actions .btn-primary {
    background: #ffffff;
    color: #0b1220;
}

.demo-actions .btn-accent {
    background: #f59e0b;
    color: #0b1220;
}

/* sticky化済みのため、オフセットオーバーライド不要 */