/* ==========================================================================
   柳茶屋 Modern Theme - Main Stylesheet

   Design intent: Warm minimalism with tactile materials

   Sections:
   1. Custom Properties
   2. Reset & Base
   3. Layout
   4. Typography
   5. Header & Navigation
   6. Hero
   7. Concept
   8. Sections (News, About, Menu, Party, Scenes, Gallery, Access)
   9. Components (Buttons, Cards, Media)
   10. Footer
   11. Utilities
   12. Animations
   13. Responsive
   ========================================================================== */

/* Fonts loaded via functions.php wp_enqueue_style */

/* ==========================================================================
   1. Custom Properties
   Rule Applied: Consistency (統一されたデザイントークン)
   ========================================================================== */

:root {
    color-scheme: light;

    /* Typography */
    --font-serif: "Shippori Mincho", "Noto Serif JP", "Hiragino Mincho ProN", "Yu Mincho", serif;
    --font-sans: "Noto Sans JP", -apple-system, blinkmacsystemfont, "Segoe UI", sans-serif;

    /* Colors - Warm, traditional palette */
    --c-ink: #1f1a16;
    --c-ink-soft: #6f6256;
    --c-ink-muted: #8a7c6f;
    --c-bg: #f8f3eb;
    --c-bg-alt: #fffdf9;
    --c-bg-warm: #f8f3eb;
    --c-border: #e5ddd2;
    --c-border-light: #efe7dd;
    --c-gold: #b88a3b;
    --c-gold-dark: #9a6f2a;
    --c-gold-light: #d4b377;
    --c-accent: #2e4a3b;

    /* Spacing - Following reference's generous whitespace */
    --space-xs: 8px;
    --space-sm: 16px;
    --space-md: 24px;
    --space-lg: 40px;
    --space-xl: 64px;
    --space-2xl: 100px;

    /* Layout */
    --radius: 12px;
    --radius-lg: 20px;
    --container: 1100px;
    --container-narrow: 800px;
    --container-wide: 1400px;
    --section-gap: 96px;
    --header-height: 72px;
    --sticky-cta-height: 86px;

    /* Animation */
    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-in-out: cubic-bezier(0.45, 0, 0.55, 1);
    --duration-fast: 0.2s;
    --duration-normal: 0.3s;
    --duration-slow: 0.6s;
}

/* ==========================================================================
   2. Reset & Base
   Rule Applied: Universal Usability (アクセシブルな基盤)
   ========================================================================== */

*, *::before, *::after {
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    margin: 0;
    font-family: var(--font-serif);
    font-size: 1rem;
    font-weight: 400;
    color: var(--c-ink);
    background: var(--c-bg);
    line-height: 1.9;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    color: inherit;
    text-decoration: none;
    transition: opacity var(--duration-normal) ease;
}

a:hover {
    opacity: 0.7;
}

/* Rule: Informative Feedback - Focus states */
a:focus-visible,
button:focus-visible {
    outline: 2px solid var(--c-gold);
    outline-offset: 2px;
}

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

button, input, select, textarea {
    font: inherit;
    color: inherit;
}

button {
    cursor: pointer;
    border: none;
    background: none;
}

h1, h2, h3, h4, h5, h6 {
    margin: 0;
    font-weight: 500;
    line-height: 1.4;
}

p {
    margin: 0;
}

ul, ol {
    margin: 0;
    padding: 0;
    list-style: none;
}

/* ==========================================================================
   3. Layout
   Rule Applied: Consistency (一貫したレイアウトシステム)
   ========================================================================== */

.container {
    width: 100%;
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.container-narrow {
    max-width: var(--container-narrow);
}

.container-wide {
    max-width: var(--container-wide);
}

.section {
    padding: var(--section-gap) 0;
}

.section-bleed {
    padding: var(--section-gap) 0;
}

/* ==========================================================================
   4. Typography
   Rule Applied: Visual Hierarchy (明確な階層構造)
   ========================================================================== */

.section-header {
    text-align: center;
    margin-bottom: var(--space-xl);
}

.section-kicker {
    display: block;
    font-family: var(--font-sans);
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.18em;
    color: var(--c-gold);
    margin: 0 0 var(--space-sm);
}

.section-title {
    font-family: var(--font-serif);
    font-size: clamp(1.6rem, 3vw, 2.3rem);
    font-weight: 500;
    letter-spacing: 0.05em;
    margin: 0 0 var(--space-md);
    line-height: 1.4;
}

.section-title::after {
    display: none;
}

.section-lead {
    margin: 0 auto;
    max-width: 600px;
    font-size: 0.98rem;
    color: var(--c-ink-soft);
    line-height: 1.9;
}

.text-link {
    font-family: var(--font-sans);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--c-ink);
    border-bottom: 1px solid currentColor;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding-bottom: 2px;
    transition: color var(--duration-normal) ease;
}

.text-link:hover {
    color: var(--c-gold-dark);
    opacity: 1;
}

.prose {
    max-width: 640px;
}

.prose p {
    margin: 0 0 1.5em;
    line-height: 2;
}

.prose p:last-child {
    margin-bottom: 0;
}

/* ==========================================================================
   5. Header & Navigation
   Rule Applied: Reduce Memory Load (常に表示されるナビゲーション)
   ========================================================================== */

.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.96);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--c-border-light);
    transition: transform var(--duration-normal) ease,
                box-shadow var(--duration-normal) ease;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--header-height);
}

/* Brand */
.brand-link {
    display: inline-flex;
    flex-direction: column;
    color: inherit;
    transition: opacity var(--duration-normal) ease;
}

.brand-link:hover {
    opacity: 0.8;
}

.brand-link.brand-logo {
    flex-direction: row;
    align-items: center;
}

.brand-logo img,
.brand-logo .custom-logo,
.brand-logo .custom-logo-link img {
    max-height: 44px;
    width: auto;
    display: block;
}

.brand-logo .custom-logo-link {
    display: flex;
    align-items: center;
}

.brand-title {
    font-family: var(--font-serif);
    font-size: 1.1rem;
    font-weight: 500;
    letter-spacing: 0.15em;
}

/* Navigation */
.primary-nav {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
}

.nav-list {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
}

.nav-list a {
    font-family: var(--font-sans);
    font-size: 0.72rem;
    font-weight: 500;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--c-ink);
    transition: color var(--duration-normal) ease;
    position: relative;
}

.nav-list a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--c-gold);
    transition: width var(--duration-normal) ease;
}

.nav-list a:hover {
    color: var(--c-ink);
    opacity: 1;
}

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

/* Rule: Informative Feedback - Active state indicator */
.nav-list a[aria-current="page"] {
    color: var(--c-gold-dark);
}

.nav-list a[aria-current="page"]::after {
    width: 100%;
    background: var(--c-gold-dark);
}

/* Header Actions */
.header-actions {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

/* Menu Toggle */
.menu-toggle {
    display: none;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    padding: 0;
    background: none;
    border: none;
}

.menu-toggle-icon {
    width: 22px;
    height: 2px;
    background: var(--c-ink);
    position: relative;
    display: block;
    transition: background var(--duration-fast) ease;
}

.menu-toggle-icon::before,
.menu-toggle-icon::after {
    content: "";
    position: absolute;
    left: 0;
    width: 22px;
    height: 2px;
    background: var(--c-ink);
    transition: transform var(--duration-normal) ease;
}

.menu-toggle-icon::before { top: -7px; }
.menu-toggle-icon::after { top: 7px; }

/* ==========================================================================
   6. Hero
   Rule Applied: Visual Hierarchy (インパクトのあるファーストビュー)
   ========================================================================== */

.site-main {
    padding-top: var(--header-height);
    padding-bottom: calc(var(--sticky-cta-height) + var(--space-lg));
}

.hero {
    position: relative;
    overflow: hidden;
    background: var(--c-bg-warm);
}

.hero-slider-viewport {
    position: relative;
    height: calc(100vh - var(--header-height));
    max-height: 900px;
    min-height: 500px;
}

/* Ken Burns effect - matching reference */
.hero-slide {
    position: absolute;
    inset: 0;
    opacity: 0;
    transform: scale(1.1);
    transition: opacity 1.2s ease, transform 9s ease-out;
}

.hero-slide.is-active {
    opacity: 1;
    transform: scale(1);
    z-index: 1;
}

.hero-slide .media-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Hero navigation dots */
.hero-dots {
    position: absolute;
    left: 50%;
    bottom: var(--space-lg);
    transform: translateX(-50%);
    display: inline-flex;
    gap: 10px;
    z-index: 10;
}

.hero-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    border: 1px solid rgba(255, 255, 255, 0.5);
    background: transparent;
    cursor: pointer;
    transition: all var(--duration-normal) ease;
    padding: 0;
}

.hero-dot:hover {
    border-color: rgba(255, 255, 255, 0.8);
}

.hero-dot.is-active {
    background: #fff;
    border-color: #fff;
}

.hero-dot:focus-visible {
    outline: 2px solid #fff;
    outline-offset: 3px;
}

/* ==========================================================================
   7. Concept
   Rule Applied: Brand Identity (ブランド認知を強化)
   ========================================================================== */

.concept {
    padding: var(--space-xl) 0;
    text-align: center;
    background: var(--c-bg);
}

.concept-inner {
    max-width: 640px;
    margin: 0 auto;
}

.concept-logo {
    max-width: 200px;
    height: auto;
    margin: 0 auto var(--space-md);
}

.concept-title {
    font-family: var(--font-serif);
    font-size: clamp(1.6rem, 4vw, 2.2rem);
    font-weight: 500;
    letter-spacing: 0.15em;
    margin: 0 0 var(--space-md);
}

.concept-tagline {
    font-family: var(--font-serif);
    font-size: 1.1rem;
    font-weight: 500;
    letter-spacing: 0.06em;
    color: var(--c-ink);
    margin: 0 0 var(--space-md);
    line-height: 1.8;
}

.concept-lead {
    font-size: 0.95rem;
    color: var(--c-ink-soft);
    line-height: 2.2;
    margin: 0;
    max-width: 560px;
}

/* ==========================================================================
   8. Section Styles
   ========================================================================== */

/* --- News Section --- */
.news {
    background: var(--c-bg);
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-md);
}

.news-card {
    border: 1px solid var(--c-border);
    border-radius: var(--radius);
    overflow: hidden;
    background: #fff;
    transition: box-shadow var(--duration-normal) ease,
                transform var(--duration-normal) ease;
}

.news-card:hover {
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
    transform: translateY(-2px);
}

.news-media {
    aspect-ratio: 16 / 10;
    overflow: hidden;
}

.news-media .media-img {
    transition: transform var(--duration-slow) var(--ease-out);
}

.news-card:hover .news-media .media-img {
    transform: scale(1.05);
}

.news-body {
    padding: var(--space-md);
    display: grid;
    gap: var(--space-xs);
}

.news-date {
    margin: 0;
    font-family: var(--font-sans);
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.2em;
    color: var(--c-ink-muted);
}

.news-title {
    margin: 0;
    font-size: 1rem;
    font-weight: 500;
    line-height: 1.6;
}

.news-excerpt {
    margin: 0;
    font-size: 0.875rem;
    color: var(--c-ink-soft);
    line-height: 1.8;
}

/* --- About Section --- */
.about {
    background: var(--c-bg-alt);
}

.about-inner {
    max-width: var(--container-narrow);
    margin: 0 auto;
    text-align: center;
}

.about .section-kicker {
    margin-bottom: var(--space-sm);
}

.about .section-title {
    margin-bottom: var(--space-md);
}

.about-text {
    text-align: left;
    max-width: 640px;
    margin: 0 auto var(--space-xl);
    font-size: 0.95rem;
    color: var(--c-ink-soft);
    line-height: 2.2;
}

.about-text p {
    margin-bottom: 1.5em;
}

.about-text p:last-child {
    margin-bottom: 0;
}

.about-image {
    max-width: 100%;
}

.about-image .media-frame {
    border-radius: var(--radius-lg);
    overflow: hidden;
}

/* --- Menu Section --- */
.menu-section {
    background: var(--c-bg);
}

.menu-feature-image {
    max-width: var(--container-narrow);
    margin: 0 auto var(--space-xl);
}

.menu-feature-image .media-frame {
    border-radius: var(--radius-lg);
    box-shadow: 0 12px 28px rgba(0, 0, 0, 0.08);
}

.menu-categories {
    max-width: 700px;
    margin: 0 auto;
}

.menu-accordion {
    display: grid;
    gap: var(--space-md);
}

.menu-accordion-item {
    border: 1px solid var(--c-border);
    border-radius: var(--radius-lg);
    background: var(--c-bg-alt);
    overflow: hidden;
}

.menu-accordion-item[open] .menu-accordion-toggle {
    border-bottom: 1px solid var(--c-border);
}

.menu-accordion-toggle {
    list-style: none;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    justify-content: space-between;
    padding: var(--space-sm) var(--space-md);
    cursor: pointer;
    font-family: var(--font-sans);
    font-size: 0.88rem;
    letter-spacing: 0.08em;
    color: var(--c-ink);
    position: relative;
}

.menu-accordion-toggle::-webkit-details-marker {
    display: none;
}

.menu-accordion-title {
    font-family: var(--font-serif);
    font-size: 1.05rem;
    letter-spacing: 0.06em;
}

.menu-accordion-icon {
    position: relative;
    width: 20px;
    height: 20px;
    border: 1px solid var(--c-border);
    border-radius: 999px;
    flex: 0 0 auto;
}

.menu-accordion-icon::before,
.menu-accordion-icon::after {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    width: 10px;
    height: 2px;
    background: var(--c-ink);
    transform: translate(-50%, -50%);
    transition: transform var(--duration-normal) ease;
}

.menu-accordion-icon::after {
    width: 2px;
    height: 10px;
}

.menu-accordion-item[open] .menu-accordion-icon::after {
    transform: translate(-50%, -50%) scaleY(0);
}

.menu-accordion-toggle:hover .menu-accordion-icon,
.menu-accordion-toggle:focus-visible .menu-accordion-icon {
    border-color: var(--c-gold);
    box-shadow: 0 0 0 3px rgba(184, 138, 59, 0.15);
}

.menu-accordion-toggle::after {
    content: "＋";
    position: absolute;
    right: calc(var(--space-md) + 30px);
    top: 50%;
    transform: translateY(-50%);
    color: var(--c-gold);
    font-size: 0.9rem;
    letter-spacing: 0.1em;
}

.menu-accordion-item[open] .menu-accordion-toggle::after {
    content: "－";
}

.menu-accordion-panel {
    padding: var(--space-md);
    background: var(--c-bg-alt);
}

.menu-accordion-item--section .menu-accordion-toggle {
    font-size: 0.95rem;
    padding: var(--space-md);
    text-transform: none;
}

.menu-accordion-item--section .menu-accordion-title {
    font-size: 1.1rem;
}

.menu-accordion-item--section .menu-accordion-hint {
    font-size: 0.7rem;
}

.menu-category {
    margin-bottom: var(--space-xl);
}

.menu-category:last-child {
    margin-bottom: 0;
}

.menu-category-title {
    font-family: var(--font-sans);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.25em;
    text-transform: uppercase;
    color: var(--c-gold);
    margin: 0 0 var(--space-sm);
    padding-bottom: var(--space-xs);
    border-bottom: 1px solid var(--c-border);
}

.menu-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.menu-list-item {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: var(--space-sm);
    padding: 14px 0;
    border-bottom: 1px solid var(--c-border-light);
    font-size: 0.98rem;
}

.menu-list-item:last-child {
    border-bottom: none;
}

.menu-item-name {
    color: var(--c-ink);
    line-height: 1.6;
}

.menu-item-price {
    font-family: var(--font-sans);
    font-weight: 500;
    color: var(--c-ink-soft);
    white-space: nowrap;
    font-size: 0.92rem;
}

.menu-category-note {
    margin: var(--space-sm) 0 0;
    font-size: 0.85rem;
    color: var(--c-ink-muted);
}

.menu-actions {
    margin-top: var(--space-xl);
    text-align: center;
}

/* --- Party Section --- */
.party {
    background: var(--c-bg-alt);
}

.party-grid {
    display: grid;
    grid-template-columns: 1.15fr 0.85fr;
    gap: var(--space-xl);
    align-items: center;
}

.party-media .media-frame {
    border-radius: var(--radius-lg);
}

.party-copy .section-kicker {
    text-align: left;
}

.party-copy .section-title {
    text-align: left;
    margin-bottom: var(--space-sm);
}

.party-copy .section-lead {
    text-align: left;
    max-width: none;
    margin-bottom: var(--space-md);
}

.party-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    margin-top: var(--space-md);
}

/* --- Scenes Section --- */
.scenes {
    background: var(--c-bg);
}

.scenes-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
}

.scene-card {
    text-align: center;
}

.scene-card-media {
    margin-bottom: var(--space-md);
}

.scene-card-media .media-frame {
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.scene-card-media .media-img {
    transition: transform var(--duration-slow) var(--ease-out);
}

.scene-card:hover .scene-card-media .media-img {
    transform: scale(1.05);
}

.scene-card-number {
    display: block;
    font-family: var(--font-sans);
    font-size: 0.65rem;
    font-weight: 600;
    letter-spacing: 0.25em;
    color: var(--c-gold);
    margin-bottom: var(--space-xs);
}

.scene-card-title {
    font-family: var(--font-serif);
    font-size: 1.1rem;
    font-weight: 500;
    margin: 0 0 var(--space-sm);
    letter-spacing: 0.04em;
}

.scene-card-text {
    font-size: 0.875rem;
    color: var(--c-ink-soft);
    line-height: 1.9;
    margin: 0;
}

/* --- Gallery Section --- */
.gallery {
    background: var(--c-bg-alt);
}

.gallery-group {
    margin-bottom: var(--space-xl);
}

.gallery-group:last-child {
    margin-bottom: 0;
}

.gallery-group-title {
    font-family: var(--font-sans);
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.25em;
    text-transform: uppercase;
    color: var(--c-ink-muted);
    margin: 0 0 var(--space-md);
    text-align: center;
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-sm);
}

.gallery-card {
    margin: 0;
}

.gallery-card .media-frame {
    border-radius: var(--radius);
    overflow: hidden;
    transition: transform var(--duration-normal) var(--ease-out);
}

.gallery-card:hover .media-frame {
    transform: scale(1.03);
}

.gallery-card .media-img {
    transition: transform var(--duration-slow) var(--ease-out);
}

.gallery-card:hover .media-img {
    transform: scale(1.08);
}

.gallery-card figcaption {
    margin-top: var(--space-xs);
    font-size: 0.75rem;
    color: var(--c-ink-muted);
    text-align: center;
}

/* --- Access Section --- */
.access {
    background: var(--c-bg);
}

.access-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
    align-items: start;
}

.access-company {
    font-weight: 600;
    font-size: 1.1rem;
    margin: 0 0 var(--space-md);
    letter-spacing: 0.05em;
}

.access-list {
    margin: 0 0 var(--space-lg);
}

.access-item {
    display: grid;
    grid-template-columns: 6.5rem 1fr;
    gap: var(--space-sm);
    padding: 12px 0;
    border-bottom: 1px solid var(--c-border-light);
    font-size: 0.9rem;
}

.access-item:last-child {
    border-bottom: none;
}

.access-list dt {
    font-family: var(--font-sans);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--c-ink-muted);
    letter-spacing: 0.08em;
}

.access-list dd {
    margin: 0;
    color: var(--c-ink);
    line-height: 1.7;
}

.access-list dd a {
    color: var(--c-ink);
    border-bottom: 1px solid transparent;
    transition: border-color var(--duration-normal) ease;
}

.access-list dd a:hover {
    border-color: var(--c-ink);
    opacity: 1;
}

.access-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.map-card {
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--c-border);
}

.map-embed {
    width: 100%;
    border: 0;
    aspect-ratio: 4 / 3;
    display: block;
}

/* ==========================================================================
   9. Components
   ========================================================================== */

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    font-family: var(--font-sans);
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: none;
    cursor: pointer;
    transition: all var(--duration-normal) ease;
    border: 1px solid transparent;
    min-height: 48px;
    padding: 12px 32px;
    border-radius: 20px;
}

.btn-reserve,
.btn-primary {
    background: var(--c-gold);
    color: #1f1a16;
    border-color: var(--c-gold);
    box-shadow: 0 8px 20px rgba(184, 138, 59, 0.28);
}

.btn-reserve:hover,
.btn-primary:hover {
    background: var(--c-gold-light);
    color: #1f1a16;
    opacity: 1;
}

.btn-outline {
    background: transparent;
    color: var(--c-ink);
    border-color: var(--c-gold);
}

.btn-outline:hover {
    border-color: var(--c-gold-dark);
    color: var(--c-ink);
    opacity: 1;
}

.btn-sm {
    padding: 10px 24px;
    font-size: 0.7rem;
    min-height: 40px;
}

.btn-sticky {
    width: 100%;
    padding: 14px 20px;
    font-size: 0.8rem;
}

/* --- Media Frames --- */
.media-frame {
    position: relative;
    overflow: hidden;
    background: var(--c-bg-alt);
}

.media-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.media-16-9 { aspect-ratio: 16 / 9; }
.media-4-3 { aspect-ratio: 4 / 3; }
.media-3-2 { aspect-ratio: 3 / 2; }
.media-1-1 { aspect-ratio: 1 / 1; }
.media-portrait { aspect-ratio: 3 / 4; }

/* ==========================================================================
   10. Footer
   ========================================================================== */

.site-footer {
    background: var(--c-ink);
    color: rgba(255, 255, 255, 0.8);
    padding: var(--space-xl) 0 0;
}

.footer-inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-md);
    text-align: center;
}

.footer-title {
    font-size: 0.95rem;
    font-weight: 500;
    letter-spacing: 0.12em;
    margin: 0;
    color: #fff;
}

.footer-social-link {
    font-family: var(--font-sans);
    font-size: 0.75rem;
    letter-spacing: 0.15em;
    color: rgba(255, 255, 255, 0.5);
    transition: color var(--duration-normal) ease;
}

.footer-social-link:hover {
    color: #fff;
    opacity: 1;
}

.footer-list {
    display: flex;
    gap: var(--space-md);
}

.footer-list a {
    font-family: var(--font-sans);
    font-size: 0.7rem;
    letter-spacing: 0.12em;
    color: rgba(255, 255, 255, 0.5);
    text-transform: uppercase;
}

.footer-list a:hover {
    color: #fff;
    opacity: 1;
}

.footer-top {
    font-family: var(--font-sans);
    font-size: 0.65rem;
    font-weight: 600;
    letter-spacing: 0.25em;
    color: rgba(255, 255, 255, 0.35);
    border: 1px solid rgba(255, 255, 255, 0.15);
    padding: 10px 24px;
    transition: all var(--duration-normal) ease;
}

.footer-top:hover {
    color: #fff;
    border-color: rgba(255, 255, 255, 0.4);
    opacity: 1;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    margin-top: var(--space-lg);
    padding: var(--space-md) 0;
    text-align: center;
}

.footer-bottom p {
    margin: 0;
    font-family: var(--font-sans);
    font-size: 0.65rem;
    letter-spacing: 0.1em;
    color: rgba(255, 255, 255, 0.3);
}

/* ==========================================================================
   11. Utilities
   Rule Applied: Universal Usability (アクセシビリティ)
   ========================================================================== */

.skip-link {
    position: absolute;
    left: -999px;
    top: auto;
    width: 1px;
    height: 1px;
    overflow: hidden;
}

.skip-link:focus {
    left: var(--space-sm);
    top: var(--space-sm);
    width: auto;
    height: auto;
    padding: var(--space-xs) var(--space-sm);
    background: var(--c-ink);
    color: #fff;
    z-index: 1000;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Mobile Sticky CTA */
.mobile-sticky-cta {
    position: fixed;
    bottom: var(--space-sm);
    left: 50%;
    transform: translateX(-50%);
    width: min(720px, calc(100% - 32px));
    z-index: 90;
    display: block;
    background: rgba(255, 253, 249, 0.96);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--c-border);
    border-radius: var(--radius-lg);
    padding: var(--space-sm);
    box-shadow: 0 12px 30px rgba(31, 26, 22, 0.14);
}

.mobile-sticky-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(0, 1fr));
    gap: var(--space-xs);
}

.sticky-phone {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    font-family: var(--font-sans);
    letter-spacing: 0.08em;
    text-transform: none;
}

.sticky-phone-label {
    font-size: 0.7rem;
    color: var(--c-ink-muted);
}

.sticky-phone-number {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--c-ink);
    letter-spacing: 0.12em;
}

/* ==========================================================================
   12. Animations
   Rule Applied: Informative Feedback (視覚的フィードバック)
   ========================================================================== */

.js [data-reveal] {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity var(--duration-slow) var(--ease-out),
                transform var(--duration-slow) var(--ease-out);
}

.js [data-reveal].is-visible {
    opacity: 1;
    transform: translateY(0);
}

.js [data-reveal-item] {
    opacity: 0;
    transform: translateY(16px);
    transition: opacity 0.5s var(--ease-out),
                transform 0.5s var(--ease-out);
    transition-delay: var(--reveal-delay, 0s);
}

.js [data-reveal-item].is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* ==========================================================================
   13. Responsive
   Rule Applied: Universal Usability (あらゆるデバイスで使いやすく)
   ========================================================================== */

@media (max-width: 960px) {
    :root {
        --header-height: 64px;
        --section-gap: 80px;
    }

    .primary-nav {
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        padding: var(--space-xl) var(--space-lg);
        display: none;
        transform: none;
        overflow-y: auto;
    }

    .primary-nav.is-open {
        display: block;
    }

    .nav-list {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-md);
    }

    .nav-list a {
        font-size: 0.85rem;
    }

    .header-actions .btn-reserve {
        display: none;
    }

    .menu-toggle {
        display: flex;
    }

    .scenes-grid {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
        max-width: 480px;
        margin: 0 auto;
    }

    .party-grid {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }

    .party-media {
        order: -1;
    }

    .gallery-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .access-grid {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }

    .mobile-sticky-cta {
        display: block;
    }
}

@media (max-width: 640px) {
    :root {
        --header-height: 60px;
        --section-gap: 64px;
    }

    .container {
        padding: 0 var(--space-md);
    }

    .hero-slider-viewport {
        height: calc(100vh - var(--header-height));
        max-height: 650px;
        min-height: 400px;
    }

    .concept-logo {
        max-width: 160px;
    }

    .section-title {
        font-size: clamp(1.3rem, 5vw, 1.6rem);
    }

    .brand-logo img,
    .brand-logo .custom-logo,
    .brand-logo .custom-logo-link img {
        max-height: 36px;
    }

    .gallery-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-xs);
    }

    .menu-feature-image {
        margin-bottom: var(--space-lg);
    }

    .access-item {
        grid-template-columns: 1fr;
        gap: 4px;
    }

    .footer-list {
        flex-direction: column;
        gap: var(--space-sm);
    }

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

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }

    .hero-slide {
        transition: opacity 0.01ms ease !important;
        transform: none !important;
    }

    .js [data-reveal],
    .js [data-reveal-item] {
        opacity: 1;
        transform: none;
    }
}

/* High Contrast */
@media (prefers-contrast: high) {
    :root {
        --c-ink: #000;
        --c-border: #000;
    }
}