@charset "UTF-8";

/* =========================================
   Base Setup (Option C: Luxurious Dark)
   ========================================= */
:root {
    --bg-color: #000000;
    --text-main: #e6e6e6;
    --text-muted: #999999;
    --accent: #bf9b30; /* ゴールド */
    --accent-red: #8a1c1c; /* 深紅 */
    --font-serif: 'Hina Mincho', serif;
    --font-gothic: 'Zen Kaku Gothic New', sans-serif;
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-main);
    font-family: var(--font-gothic);
    line-height: 2;
    letter-spacing: 0.05em;
    overflow-x: hidden;
}

a { text-decoration: none; color: inherit; transition: 0.4s; }
img { width: 100%; height: 100%; object-fit: cover; display: block; }
ul { list-style: none; }

/* =========================================
   Typography & Utilities
   ========================================= */
.serif { font-family: var(--font-serif); }
.gold { color: var(--accent); }
.vertical-text {
    writing-mode: vertical-rl;
    text-orientation: upright;
    letter-spacing: 0.2em;
}

/* フェードインアニメーション用クラス */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 1s ease, transform 1s ease;
}
.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* =========================================
   Header
   ========================================= */
.header {
    position: fixed;
    top: 0; left: 0; width: 100%;
    padding: 1.5rem 4%;
    display: flex; justify-content: space-between; align-items: center;
    z-index: 100;
    background: linear-gradient(to bottom, rgba(0,0,0,0.9), transparent);
    transition: background 0.3s;
}
.header.scrolled { background: #000; border-bottom: 1px solid #222; }

.logo { font-family: var(--font-serif); font-size: 1.8rem; letter-spacing: 0.1em; }
.nav ul { display: flex; gap: 2.5rem; }
.nav a { font-size: 0.9rem; font-weight: 500; }
.nav a:hover, .nav a.active { color: var(--accent); }

.btn-reserve-nav {
    border: 1px solid var(--accent);
    color: var(--accent);
    padding: 0.5rem 1.5rem;
    font-family: var(--font-serif);
}
.btn-reserve-nav:hover { background: var(--accent); color: #000; }

.hamburger { display: none; cursor: pointer; }
.hamburger span { display: block; width: 30px; height: 1px; background: #fff; margin: 8px 0; transition: 0.3s; }

/* =========================================
   Hero Section
   ========================================= */
.hero {
    height: 100vh;
    position: relative;
    display: flex; align-items: center; justify-content: center;
    overflow: hidden;
}
.hero-bg {
    position: absolute; top: 0; left: 0; width: 100%; height: 100%;
    background-size: cover; background-position: center;
    filter: brightness(0.6);
    transform: scale(1.1);
    animation: zoomOut 20s infinite alternate;
}
@keyframes zoomOut { from { transform: scale(1.1); } to { transform: scale(1.0); } }

.hero-content {
    position: relative; z-index: 2;
    text-align: center;
    border: 1px solid rgba(255,255,255,0.3);
    padding: 3rem 5rem;
    background: rgba(0,0,0,0.3);
    backdrop-filter: blur(2px);
}
.hero-title {
    font-family: var(--font-serif);
    font-size: 3rem; margin-bottom: 1rem;
    line-height: 1.4;
}
.hero-sub { color: var(--accent); font-size: 1rem; letter-spacing: 0.2em; }

/* =========================================
   Common Layout
   ========================================= */
.section { padding: 8rem 5%; }
.container { max-width: 1100px; margin: 0 auto; }

.section-title {
    text-align: center; margin-bottom: 5rem;
    position: relative;
}
.section-title h2 {
    font-family: var(--font-serif); font-size: 2.5rem; font-weight: 400;
}
.section-title span {
    display: block; color: var(--accent); font-size: 0.8rem; letter-spacing: 0.2em; margin-bottom: 1rem;
}
.section-title::after {
    content: ''; display: block; width: 1px; height: 60px; background: var(--accent);
    margin: 2rem auto 0;
}

/* =========================================
   Top Page Elements
   ========================================= */
/* Concept Teaser */
.split-layout {
    display: flex; align-items: center; gap: 5%;
}
.split-text { width: 45%; }
.split-img { width: 50%; height: 500px; }
.split-text h3 {
    font-family: var(--font-serif); font-size: 2rem; margin-bottom: 2rem;
    line-height: 1.6;
}
.split-text p { color: var(--text-muted); margin-bottom: 3rem; }
.btn-link {
    display: inline-block; border-bottom: 1px solid var(--accent); padding-bottom: 5px;
    font-family: var(--font-serif); color: var(--accent);
}

/* Instagram */
.instagram-embed-wrapper {
    width: 100%; max-width: 800px; margin: 0 auto;
    border: 1px solid #333; padding: 2rem; text-align: center;
}

/* =========================================
   Sub Pages
   ========================================= */
.page-head {
    height: 60vh; position: relative;
    display: flex; align-items: center; justify-content: center;
}
.page-head-bg {
    position: absolute; top: 0; left: 0; width: 100%; height: 100%;
    background-size: cover; background-position: center; filter: brightness(0.4);
}
.page-head h1 {
    position: relative; z-index: 2; font-family: var(--font-serif); font-size: 3rem;
}

/* Menu Page */
.menu-section { margin-bottom: 6rem; }
.menu-cat-title {
    font-family: var(--font-serif); font-size: 1.8rem; color: var(--accent);
    border-bottom: 1px solid #333; padding-bottom: 1rem; margin-bottom: 3rem;
}
.menu-list { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem 2rem; }
.menu-item { display: flex; justify-content: space-between; border-bottom: 1px dotted #444; padding-bottom: 0.5rem; }
.menu-name { font-weight: 500; }
.menu-price { font-family: var(--font-serif); color: var(--accent); }

/* Rooms Page */
.room-card {
    display: flex; margin-bottom: 6rem; background: #111;
}
.room-card:nth-child(even) { flex-direction: row-reverse; }
.room-img { width: 55%; height: 400px; }
.room-info { width: 45%; padding: 4rem; display: flex; flex-direction: column; justify-content: center; }
.room-info h3 { font-family: var(--font-serif); font-size: 1.8rem; margin-bottom: 1.5rem; color: var(--accent); }
.room-specs { margin-top: 2rem; font-size: 0.9rem; color: var(--text-muted); border-top: 1px solid #333; padding-top: 1rem; }

/* Form */
.form-wrap { max-width: 700px; margin: 0 auto; }
input, textarea, select {
    width: 100%; background: #111; border: 1px solid #333; color: #fff; padding: 1rem;
    margin-bottom: 1.5rem; font-family: inherit;
}
.btn-submit {
    width: 100%; background: var(--accent-red); border: none; padding: 1.2rem;
    color: #fff; font-size: 1.1rem; cursor: pointer; letter-spacing: 0.1em;
}

/* Footer */
.footer {
    background: #050505; padding: 5rem 5%; text-align: center; border-top: 1px solid #222;
}
.footer-logo { font-family: var(--font-serif); font-size: 2rem; margin-bottom: 2rem; }
.footer-info { color: var(--text-muted); font-size: 0.9rem; margin-bottom: 2rem; }

/* Responsive */
@media (max-width: 768px) {
    .nav { display: none; } /* ハンバーガー省略時の簡易対応 */
    .hamburger { display: block; }
    .hero-content { padding: 2rem; width: 90%; }
    .hero-title { font-size: 2rem; }
    .split-layout, .menu-list, .room-card { display: block; }
    .split-text, .split-img, .room-img, .room-info { width: 100%; }
    .split-img { margin-bottom: 2rem; height: 300px; }
    .room-img { height: 250px; }
    .room-info { padding: 2rem; }
    .menu-item { margin-bottom: 2rem; }
}