@font-face {
    font-family: 'Google Sans';
    src: url('https://fonts.gstatic.com/s/googlesans/v35/4UaGrENHsxJlGwyg_OUCIzQyLQ.woff2') format('woff2');
    font-weight: 400;
    font-style: normal;
}

:root {
    --primary-text: #111111;
    --secondary-text: #666666;
    --bg-color: #FFFFFF;
    --accent-bg: #111111;
    --accent-text: #FFFFFF;
    --border-color: #D1D1D1;
    --card-bg: rgba(255, 255, 255, 0.95);
    --section-bg: #F9F9F9;
}

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

body {
    font-family: 'Google Sans', sans-serif;
    background-color: var(--bg-color);
    color: var(--primary-text);
    line-height: 1.6;
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    padding-bottom: 80px; /* ボトムナビゲーション用の余白 */
}

h1, h2, h3 { color: var(--primary-text); }
a { text-decoration: none; color: inherit; }

/* Header */
.header {
    position: fixed;
    top: 0;
    width: 100%;
    max-width: 800px;
    background: var(--card-bg);
    border-bottom: 1px solid var(--border-color);
    z-index: 50;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    backdrop-filter: blur(8px);
}

.logo {
    font-size: 1.25rem;
    font-weight: bold;
    letter-spacing: 0.1em;
}

.subtitle {
    display: block;
    font-size: 0.75rem;
    color: var(--secondary-text);
    font-weight: normal;
    letter-spacing: normal;
}

.menu-btn {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--primary-text);
}

/* Hero Section */
.hero {
    height: 50vh;
    min-height: 400px;
    background: linear-gradient(rgba(255,255,255,0.85), rgba(255,255,255,1)), url('img/hero.webp') center/cover;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 0 16px;
    border-bottom: 1px solid var(--border-color);
    margin-top: 60px;
}

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.hero p {
    color: var(--secondary-text);
    font-size: 0.9rem;
    margin-bottom: 2rem;
}

.btn-primary {
    background-color: var(--accent-bg);
    color: var(--accent-text);
    padding: 12px 32px;
    border-radius: 999px;
    font-weight: bold;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    transition: transform 0.2s ease;
}

.btn-primary:active {
    transform: scale(0.98);
}

/* Sections */
section { padding: 48px 24px; }
section:not(:last-of-type) { border-bottom: 1px solid var(--border-color); }

h2 {
    text-align: center;
    font-size: 1.5rem;
    margin-bottom: 32px;
}

.section-subtitle {
    display: block;
    font-size: 0.875rem;
    color: var(--secondary-text);
    font-weight: normal;
    margin-bottom: 4px;
}

.card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    padding: 24px;
    border-radius: 16px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.02);
    font-size: 0.875rem;
}

.concept.card p {
    color: var(--secondary-text);
    text-align: center;
}

/* Menu List */
.menu-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.menu-item {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border-color);
}

.menu-info h3 { font-size: 1.125rem; }

.menu-info p {
    font-size: 0.75rem;
    color: var(--secondary-text);
    margin-top: 4px;
}

.menu-price {
    font-size: 1.25rem;
    font-weight: bold;
}

/* Access Information */
.access { background-color: var(--section-bg); }

.address-card dl {
    display: grid;
    gap: 12px;
}

.address-card dt {
    font-weight: bold;
    color: var(--primary-text);
}

.address-card dd {
    color: var(--secondary-text);
    margin-bottom: 8px;
}

.address-card a {
    color: var(--primary-text);
    text-decoration: underline;
}

.footer {
    text-align: center;
    padding: 24px;
    font-size: 0.75rem;
    color: var(--secondary-text);
}

/* Bottom Navigation */
.bottom-nav {
    position: fixed;
    bottom: 0;
    width: 100%;
    max-width: 800px;
    background: var(--card-bg);
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: space-around;
    padding: 12px 0;
    z-index: 50;
}

.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    color: var(--secondary-text);
    font-size: 0.625rem;
    transition: color 0.2s ease;
}

.nav-item.active,.nav-item:hover {
    color: var(--primary-text);
    font-weight: bold;
}

.nav-item.material-symbols-outlined { margin-bottom: 4px; }

/* Micro-Interactions (Intersection Observer Fade-in) */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
    will-change: opacity, transform;
}

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