/* ===================================
   YUKI IZAKAYA - MAIN STYLESHEET
   Premium Restaurant Website
   =================================== */

/* CSS Variables */
:root {
    /* Colors */
    --primary-color: #c41e3a;
    --primary-dark: #9a1829;
    --primary-light: #e63950;
    --secondary-color: #1a1a1a;
    --accent-color: #d4af37;
    --text-dark: #2c2c2c;
    --text-light: #6b6b6b;
    --text-white: #ffffff;
    --bg-light: #f8f8f8;
    --bg-white: #ffffff;
    --border-color: #e0e0e0;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.16);

    /* Typography */
    --font-primary: 'Noto Sans JP', sans-serif;
    --font-heading: 'Playfair Display', serif;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
    font-weight: 700;
}

h1 { font-size: 3.5rem; }
h2 { font-size: 2.5rem; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: var(--spacing-sm);
}

.lead {
    font-size: 1.25rem;
    font-weight: 500;
    color: var(--text-light);
}

.japanese {
    font-family: 'Noto Sans JP', sans-serif;
    font-weight: 400;
    color: var(--accent-color);
}

/* Links */
a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--primary-dark);
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.container-fluid {
    max-width: 100%;
    padding: 0 var(--spacing-md);
}

/* Buttons */
.btn-primary,
.btn-secondary,
.btn-outline {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    font-weight: 500;
    text-align: center;
    cursor: pointer;
    border: none;
    transition: all var(--transition-normal);
    font-family: var(--font-primary);
    font-size: 1rem;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    color: var(--text-white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

.btn-secondary:hover {
    background: #333;
    color: var(--text-white);
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

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

.btn-lg {
    padding: 1rem 2.5rem;
    font-size: 1.1rem;
}

.btn-block {
    display: block;
    width: 100%;
}

.btn-icon {
    background: transparent;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    position: relative;
}

.btn-close {
    background: transparent;
    border: none;
    font-size: 2rem;
    cursor: pointer;
    color: var(--text-dark);
    line-height: 1;
}

/* Badge */
.badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-popular {
    background: var(--primary-color);
    color: var(--text-white);
}

.badge-new {
    background: var(--accent-color);
    color: var(--text-dark);
}

/* Hero Section */
.hero {
    position: relative;
    height: 100vh;
    min-height: 600px;
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--secondary-color) 100%);
    background-image: url('../assets/images/hero-bg.jpg');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: var(--text-white);
    padding: var(--spacing-md);
}

.hero-title {
    font-size: 4rem;
    margin-bottom: var(--spacing-sm);
    text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-lg);
    font-weight: 300;
    letter-spacing: 2px;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    flex-wrap: wrap;
}

.hero-scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    text-align: center;
    color: var(--text-white);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.scroll-arrow {
    margin-top: 0.5rem;
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-10px);
    }
    60% {
        transform: translateY(-5px);
    }
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-fade-in {
    animation: fadeIn 0.8s ease forwards;
}

.animate-fade-in-delay {
    opacity: 0;
    animation: fadeIn 0.8s ease 0.3s forwards;
}

.animate-fade-in-delay-2 {
    opacity: 0;
    animation: fadeIn 0.8s ease 0.6s forwards;
}

/* Features Section */
.features {
    padding: var(--spacing-xl) 0;
    background: var(--bg-white);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
}

.feature-card {
    text-align: center;
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    transition: transform var(--transition-normal);
}

.feature-card:hover {
    transform: translateY(-5px);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
}

.feature-card h3 {
    color: var(--text-dark);
    margin-bottom: var(--spacing-xs);
}

.feature-card p {
    color: var(--text-light);
    margin-bottom: 0;
}

/* Section Header */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.section-header h2 {
    color: var(--text-dark);
}

.section-header p {
    color: var(--text-light);
    font-size: 1.125rem;
}

/* Featured Menu */
.featured-menu {
    padding: var(--spacing-xl) 0;
    background: var(--bg-light);
}

.menu-carousel {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.menu-item-card {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
}

.menu-item-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-5px);
}

.menu-item-image {
    height: 250px;
    background-size: cover;
    background-position: center;
    background-color: var(--border-color);
    position: relative;
}

.menu-item-image .badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
}

.menu-item-content {
    padding: var(--spacing-md);
}

.menu-item-content h3 {
    color: var(--text-dark);
    margin-bottom: var(--spacing-xs);
}

.menu-item-content p {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-sm);
}

.menu-item-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: var(--spacing-sm);
}

.price {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.btn-add-to-cart {
    background: var(--primary-color);
    color: var(--text-white);
    border: none;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-weight: 500;
    transition: all var(--transition-fast);
}

.btn-add-to-cart:hover {
    background: var(--primary-dark);
    transform: scale(1.05);
}

/* About Preview */
.about-preview {
    padding: var(--spacing-xl) 0;
    background: var(--bg-white);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    align-items: center;
}

.about-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.about-content h2 {
    color: var(--text-dark);
    margin-bottom: var(--spacing-sm);
}

.about-content p {
    color: var(--text-light);
    margin-bottom: var(--spacing-sm);
}

/* Newsletter */
.newsletter {
    padding: var(--spacing-xl) 0;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: var(--text-white);
}

.newsletter-content {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.newsletter-content h2 {
    color: var(--text-white);
    margin-bottom: var(--spacing-sm);
}

.newsletter-content p {
    margin-bottom: var(--spacing-md);
}

.newsletter-form {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.newsletter-form input {
    flex: 1;
    padding: 0.75rem 1rem;
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
}

.newsletter-privacy {
    font-size: 0.875rem;
    opacity: 0.8;
    margin-bottom: 0;
}

/* Cart Sidebar */
.cart-sidebar {
    position: fixed;
    top: 0;
    right: -400px;
    width: 100%;
    max-width: 400px;
    height: 100vh;
    background: var(--bg-white);
    box-shadow: var(--shadow-lg);
    z-index: 1001;
    transition: right var(--transition-normal);
    display: flex;
    flex-direction: column;
}

.cart-sidebar.open {
    right: 0;
}

.cart-header {
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.cart-header h3 {
    margin-bottom: 0;
}

.cart-items {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-md);
}

.cart-empty {
    text-align: center;
    color: var(--text-light);
    padding: var(--spacing-lg) 0;
}

.cart-footer {
    padding: var(--spacing-md);
    border-top: 1px solid var(--border-color);
}

.cart-total {
    display: flex;
    justify-content: space-between;
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

/* Overlay */
.overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

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

/* Cart Count Badge */
.cart-count {
    position: absolute;
    top: -8px;
    right: -8px;
    background: var(--primary-color);
    color: var(--text-white);
    border-radius: 50%;
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 700;
}

/* Utility Classes */
.text-center {
    text-align: center;
}

.text-right {
    text-align: right;
}

.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }

.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }

/* Responsive Design */
@media (max-width: 768px) {
    h1 { font-size: 2.5rem; }
    h2 { font-size: 2rem; }
    h3 { font-size: 1.5rem; }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.2rem;
    }

    .hero-buttons {
        flex-direction: column;
    }

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

    .newsletter-form {
        flex-direction: column;
    }

    .menu-carousel {
        grid-template-columns: 1fr;
    }

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

/* Performance Optimizations */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}