/* ==========================================================================
   雅 MIYABI - 居酒屋サイト CSS
   和風モダンデザイン / レスポンシブ / アクセシビリティ対応
   ========================================================================== */

/* CSS Reset & Base Styles */
*,
*::before,
*::after {
    box-sizing: border-box;
}

* {
    margin: 0;
    padding: 0;
}

html {
    line-height: 1.5;
    -webkit-text-size-adjust: 100%;
    scroll-behavior: smooth;
}

body {
    font-family: 'Hiragino Kaku Gothic Pro', 'ヒラギノ角ゴ Pro W3', 'Meiryo', 'メイリオ', sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: #2c3e50;
    background-color: #fefefe;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img,
picture,
video,
canvas,
svg {
    display: block;
    max-width: 100%;
    height: auto;
}

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

p,
h1,
h2,
h3,
h4,
h5,
h6 {
    overflow-wrap: break-word;
}

/* CSS Variables */
:root {
    /* Colors - 和風パレット */
    --primary-color: #1a365d;        /* 深い藍色 */
    --primary-light: #2d5a87;        
    --secondary-color: #c53030;       /* 朱色 */
    --accent-color: #d69e2e;          /* 金色 */
    --text-primary: #2c3e50;
    --text-secondary: #4a5568;
    --text-light: #718096;
    --background-light: #f7fafc;
    --background-cream: #fefcf7;
    --border-color: #e2e8f0;
    --white: #ffffff;
    
    /* Typography */
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    
    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    
    /* Breakpoints */
    --breakpoint-sm: 640px;
    --breakpoint-md: 768px;
    --breakpoint-lg: 1024px;
    --breakpoint-xl: 1280px;
    
    /* Layout */
    --container-max-width: 1200px;
    --header-height: 80px;
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.2s ease;
    --transition-slow: 0.3s ease;
}

/* Utility Classes */
.container {
    width: 100%;
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--space-md);
}

@media (min-width: 640px) {
    .container {
        padding: 0 var(--space-xl);
    }
}

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.25;
    color: var(--primary-color);
}

h1 {
    font-size: var(--font-size-3xl);
}

h2 {
    font-size: var(--font-size-2xl);
}

h3 {
    font-size: var(--font-size-xl);
}

a {
    color: inherit;
    text-decoration: none; /* ユーザー希望: リンクの下線を削除 */
    transition: color var(--transition-base);
}

a:hover,
a:focus {
    color: var(--secondary-color);
}

a:focus {
    outline: 2px solid var(--accent-color);
    outline-offset: 2px;
}

/* Button Styles */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    font-size: var(--font-size-base);
    font-weight: 600;
    text-align: center;
    text-decoration: none;
    border: 2px solid transparent;
    border-radius: 8px;
    cursor: pointer;
    transition: all var(--transition-base);
    min-height: 48px; /* アクセシビリティ: 最小タップエリア */
}

.btn:focus {
    outline: 2px solid var(--accent-color);
    outline-offset: 2px;
}

.btn-primary {
    background-color: var(--secondary-color);
    color: var(--white);
    border-color: var(--secondary-color);
}

.btn-primary:hover,
.btn-primary:focus {
    background-color: #b91c1c;
    border-color: #b91c1c;
    color: var(--white);
}

.btn-secondary {
    background-color: transparent;
    color: var(--white);
    border-color: var(--white);
}

.btn-secondary:hover,
.btn-secondary:focus {
    background-color: var(--white);
    color: var(--primary-color);
}

.btn-outline {
    background-color: transparent;
    color: var(--primary-color);
    border-color: var(--primary-color);
}

.btn-outline:hover,
.btn-outline:focus {
    background-color: var(--primary-color);
    color: var(--white);
}

.btn-icon {
    width: 18px;
    height: 18px;
}

/* Header & Navigation */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: rgba(26, 54, 93, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.nav {
    height: var(--header-height);
}

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

.nav-logo {
    display: flex;
    flex-direction: column;
    align-items: center;
    color: var(--white);
    text-decoration: none;
}

.logo-text {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--white);
    margin: 0;
}

.logo-subtitle {
    font-size: var(--font-size-xs);
    letter-spacing: 0.1em;
    color: var(--accent-color);
}

.nav-toggle {
    display: block;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-sm);
    color: var(--white);
}

.hamburger {
    display: block;
    width: 24px;
    height: 2px;
    background-color: currentColor;
    position: relative;
    transition: background-color var(--transition-base);
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 2px;
    background-color: currentColor;
    transition: all var(--transition-base);
}

.hamburger::before {
    top: -8px;
}

.hamburger::after {
    bottom: -8px;
}

.nav-menu {
    display: none;
    list-style: none;
    gap: var(--space-xl);
}

.nav-link {
    color: var(--white);
    font-weight: 500;
    padding: var(--space-sm) 0;
    position: relative;
    transition: color var(--transition-base);
}

.nav-link:hover,
.nav-link:focus,
.nav-link.active {
    color: var(--accent-color);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    right: 0;
    height: 2px;
    background-color: var(--accent-color);
}

.nav-phone {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    color: var(--white);
    font-weight: 600;
    padding: var(--space-sm) var(--space-md);
    border: 1px solid var(--accent-color);
    border-radius: 6px;
    transition: all var(--transition-base);
}

.nav-phone:hover,
.nav-phone:focus {
    background-color: var(--accent-color);
    color: var(--primary-color);
}

.phone-icon {
    width: 16px;
    height: 16px;
}

/* Mobile Navigation */
@media (max-width: 639px) {
    .nav-container {
        padding: 0 var(--space-md);
    }
    
    .nav-menu {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--primary-color);
        flex-direction: column;
        padding: var(--space-lg);
        border-top: 1px solid rgba(255, 255, 255, 0.1);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-base);
    }
    
    .nav-menu.active {
        display: flex;
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav-phone {
        display: none;
    }
}

@media (min-width: 640px) {
    .nav-toggle {
        display: none;
    }
    
    .nav-menu {
        display: flex;
    }
    
    .nav-container {
        padding: 0 var(--space-xl);
    }
}

/* Main Content */
.main {
    padding-top: var(--header-height); /* ヘッダー固定分の余白をマージンでなくパディングで確保（マージン折り畳み防止） */
}

/* 先頭がヒーローのページでは、ヒーローをヘッダー下に重ねる */
.main > .hero:first-child {
    margin-top: calc(var(--header-height) * -1);
}

/* Hero Section */
.hero {
    position: relative;
    height: 100vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background-color: #0b0f14; /* ローディング時の白透け防止 */
}

.hero-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.hero-image img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    background-color: transparent; /* ユーザー希望: 透明背景 */
    z-index: 0;
}

.hero-image::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(0deg, rgba(0, 0, 0, 0.65) 0%, rgba(0, 0, 0, 0.65) 100%);
    z-index: 1; /* 画像の上に配置 */
}

.hero-content {
    text-align: center;
    color: var(--white);
    max-width: 800px;
    padding: 0 var(--space-lg);
    position: relative;
    z-index: 2; /* オーバーレイより前面 */
}

.hero-title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    margin-bottom: var(--space-lg);
    color: #ffffff;
    text-shadow: 0 3px 12px rgba(0, 0, 0, 0.7);
}

.hero-subtitle {
    font-size: var(--font-size-lg);
    margin-bottom: var(--space-2xl);
    opacity: 0.98;
    color: #f7fafc;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.6);
}

.hero-actions {
    display: flex;
    gap: var(--space-lg);
    justify-content: center;
    flex-wrap: wrap;
}

@media (min-width: 640px) {
    .hero-title {
        font-size: var(--font-size-4xl);
    }
    
    .hero-subtitle {
        font-size: var(--font-size-xl);
    }
}

/* Section Styles */
section {
    padding: var(--space-3xl) 0;
}

.section-title {
    text-align: center;
    font-size: var(--font-size-3xl);
    font-weight: 700;
    margin-bottom: var(--space-xl);
    color: var(--primary-color);
}

.section-subtitle {
    text-align: center;
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    margin-bottom: var(--space-2xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* Features Section */
.features {
    background-color: var(--background-light);
}

.features-grid {
    display: grid;
    gap: var(--space-xl);
    grid-template-columns: 1fr;
}

.feature-card {
    text-align: center;
    padding: var(--space-xl);
    background-color: var(--white);
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.feature-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 80px;
    height: 80px;
    background-color: var(--background-cream);
    border-radius: 50%;
    margin-bottom: var(--space-lg);
    color: var(--primary-color);
}

.feature-icon svg {
    width: 40px;
    height: 40px;
}

.feature-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--space-md);
    color: var(--primary-color);
}

.feature-description {
    color: var(--text-secondary);
    line-height: 1.7;
}

@media (min-width: 640px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* Menu Preview Section */
.menu-preview {
    background-color: var(--background-cream);
}

.menu-grid {
    display: grid;
    gap: var(--space-xl);
    grid-template-columns: 1fr;
    margin-bottom: var(--space-2xl);
}

.menu-item {
    background-color: var(--white);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.menu-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.menu-item img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    background-color: transparent; /* ユーザー希望: 透明背景 */
}

.menu-content {
    padding: var(--space-lg);
}

.menu-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--space-sm);
    color: var(--primary-color);
}

.menu-description {
    color: var(--text-secondary);
    margin-bottom: var(--space-md);
    line-height: 1.6;
}

.menu-price {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--secondary-color);
}

.menu-action {
    text-align: center;
}

@media (min-width: 640px) {
    .menu-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .menu-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* Info Section */
.info-section {
    background-color: var(--white);
}

.info-grid {
    display: grid;
    gap: var(--space-xl);
    grid-template-columns: 1fr;
}

.info-card {
    text-align: center;
    padding: var(--space-xl);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    transition: border-color var(--transition-base);
}

.info-card:hover {
    border-color: var(--primary-light);
}

.info-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--space-lg);
    color: var(--primary-color);
}

.info-content p {
    margin-bottom: var(--space-sm);
    color: var(--text-secondary);
}

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

.info-phone {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--secondary-color);
}

.info-note {
    font-size: var(--font-size-sm);
    color: var(--text-light);
}

@media (min-width: 640px) {
    .info-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .info-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* Footer */
.footer {
    background-color: var(--primary-color);
    color: var(--white);
    padding: var(--space-3xl) 0 var(--space-xl);
}

.footer-content {
    display: grid;
    gap: var(--space-2xl);
    grid-template-columns: 1fr;
    margin-bottom: var(--space-2xl);
}

.footer-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin-bottom: var(--space-lg);
    color: var(--white);
}

.footer-address {
    font-style: normal;
    line-height: 1.7;
    margin-bottom: var(--space-md);
}

.footer-phone {
    color: var(--accent-color);
    font-weight: 600;
}

.footer-hours {
    font-size: var(--font-size-sm);
    opacity: 0.8;
}

.footer-nav-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--space-lg);
    color: var(--white);
}

.footer-menu {
    list-style: none;
}

.footer-menu li {
    margin-bottom: var(--space-sm);
}

.footer-menu a {
    color: rgba(255, 255, 255, 0.8);
    transition: color var(--transition-base);
}

.footer-menu a:hover,
.footer-menu a:focus {
    color: var(--accent-color);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--space-xl);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-copyright {
    font-size: var(--font-size-sm);
    opacity: 0.6;
}

@media (min-width: 640px) {
    .footer-content {
        grid-template-columns: 2fr 1fr;
    }
}

/* Gallery Grid */
.gallery-grid {
    display: grid;
    gap: var(--space-lg);
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.gallery-item {
    position: relative;
    border-radius: 12px;
    overflow: hidden;
    cursor: pointer;
    transition: transform var(--transition-base);
}

.gallery-item:hover {
    transform: scale(1.02);
}

.gallery-item img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    background-color: transparent; /* ユーザー希望: 透明背景 */
}

.gallery-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to bottom, transparent 0%, rgba(0, 0, 0, 0.7) 100%);
    display: flex;
    align-items: flex-end;
    padding: var(--space-lg);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.gallery-item:hover .gallery-overlay {
    opacity: 1;
}

.gallery-caption {
    color: var(--white);
    font-weight: 600;
}

/* Lightbox */
.lightbox {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
}

.lightbox.active {
    opacity: 1;
    visibility: visible;
}

.lightbox-content {
    position: relative;
    max-width: 90%;
    max-height: 90%;
}

.lightbox img {
    max-width: 100%;
    max-height: 100%;
    border-radius: 8px;
}

.lightbox-close {
    position: absolute;
    top: -40px;
    right: 0;
    background: none;
    border: none;
    color: var(--white);
    font-size: var(--font-size-2xl);
    cursor: pointer;
    padding: var(--space-sm);
    transition: color var(--transition-base);
}

.lightbox-close:hover {
    color: var(--accent-color);
}

/* Form Styles */
.form-group {
    margin-bottom: var(--space-lg);
}

.form-label {
    display: block;
    font-weight: 600;
    margin-bottom: var(--space-sm);
    color: var(--primary-color);
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: var(--space-md);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: var(--font-size-base);
    transition: border-color var(--transition-base);
    background-color: var(--white);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.form-textarea {
    resize: vertical;
    min-height: 120px;
}

.form-error {
    color: var(--secondary-color);
    font-size: var(--font-size-sm);
    margin-top: var(--space-xs);
}

.form-actions {
    display: flex;
    gap: var(--space-lg);
    justify-content: center;
    flex-wrap: wrap;
}

/* Contact Info Cards */
.contact-info {
    display: grid;
    gap: var(--space-xl);
    grid-template-columns: 1fr;
    margin-bottom: var(--space-3xl);
}

.contact-card {
    text-align: center;
    padding: var(--space-xl);
    background-color: var(--white);
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
}

.contact-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 60px;
    height: 60px;
    background-color: var(--background-cream);
    border-radius: 50%;
    margin-bottom: var(--space-lg);
    color: var(--primary-color);
}

.contact-icon svg {
    width: 24px;
    height: 24px;
}

@media (min-width: 640px) {
    .contact-info {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .contact-info {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* Map Container */
.map-container {
    position: relative;
    width: 100%;
    height: 400px;
    border-radius: 12px;
    overflow: hidden;
    margin-bottom: var(--space-3xl);
}

.map-container iframe {
    width: 100%;
    height: 100%;
    border: none;
}

/* Menu Categories */
.menu-category {
    margin-bottom: var(--space-3xl);
}

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

.category-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: var(--space-xl);
    text-align: center;
    position: relative;
}

.category-title::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background-color: var(--accent-color);
}

.menu-items {
    display: grid;
    gap: var(--space-lg);
}

.menu-dish {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    padding: var(--space-lg);
    background-color: var(--white);
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    transition: box-shadow var(--transition-base);
}

.menu-dish:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.dish-info {
    flex: 1;
}

.dish-name {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: var(--space-xs);
}

.dish-description {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    line-height: 1.5;
}

.dish-price {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--secondary-color);
    margin-left: var(--space-lg);
    white-space: nowrap;
}

/* About Page Styles */
.concept-section {
    background-color: var(--background-cream);
}

.concept-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.concept-text {
    font-size: var(--font-size-lg);
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: var(--space-xl);
}

.stats-grid {
    display: grid;
    gap: var(--space-xl);
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    margin-top: var(--space-2xl);
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--secondary-color);
    margin-bottom: var(--space-sm);
}

.stat-label {
    color: var(--text-secondary);
    font-weight: 500;
}

/* Accessibility improvements */
@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;
    }
}

/* Focus indicators for keyboard navigation */
button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
    outline: 2px solid var(--accent-color);
    outline-offset: 2px;
}

/* Print styles */
@media print {
    .header,
    .nav-toggle,
    .hero-actions,
    .lightbox {
        display: none;
    }
    
    .main {
        margin-top: 0;
    }
    
    * {
        background: white !important;
        color: black !important;
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --primary-color: #000000;
        --text-primary: #000000;
        --border-color: #000000;
    }
}