/* ========================================
   Yakiniku Jian - Main Stylesheet
   Mobile-First Design for Booking Experience
   ======================================== */

/* --- 1. VARIABLES & RESET --- */
:root {
    --bg-color: #1a1a1a;
    --bg-secondary: #252525;
    --text-color: #f0f0f0;
    --accent-color: #d4af37;
    --font-main: 'Noto Sans JP', sans-serif;
    --font-serif: 'Shippori Mincho', serif;
    --transition: all 0.4s ease;
    --shadow-gold: 0 4px 20px rgba(212, 175, 55, 0.3);

    /* Mobile Touch Targets */
    --touch-target: 48px;
    --spacing-xs: 8px;
    --spacing-sm: 12px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
}

body {
    overflow-x: hidden;
    font-family: var(--font-main);
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.8;
    letter-spacing: 0.05em;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

ul {
    list-style: none;
}

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

/* --- 2. TYPOGRAPHY --- */
h1, h2, h3 {
    font-family: var(--font-serif);
    font-weight: 700;
}

.section-title {
    font-size: clamp(1.8rem, 5vw, 2.5rem);
    color: var(--accent-color);
    text-align: center;
    margin-bottom: var(--spacing-xl);
    position: relative;
    display: block;
    width: 100%;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 2px;
    background: var(--accent-color);
    margin: 15px auto 0;
}

.container {
    width: 92%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

/* --- 3. BUTTONS --- */
.btn-gold {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-xl);
    border: 1px solid var(--accent-color);
    color: var(--accent-color);
    font-family: var(--font-serif);
    font-size: 1rem;
    margin-top: var(--spacing-md);
    position: relative;
    overflow: hidden;
    z-index: 1;
    min-height: var(--touch-target);
    touch-action: manipulation;
}

.btn-gold::before {
    content: '';
    position: absolute;
    top: 0; left: 0; width: 0%; height: 100%;
    background: var(--accent-color);
    z-index: -1;
    transition: var(--transition);
}

.btn-gold:hover, .btn-gold:active {
    color: #000;
}

.btn-gold:hover::before, .btn-gold:active::before {
    width: 100%;
}

/* --- 4. HEADER & NAVIGATION --- */
header {
    position: fixed;
    top: 0;
    width: 100%;
    padding: var(--spacing-md) 0;
    z-index: 2000;
    background: rgba(26, 26, 26, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(212, 175, 55, 0.2);
    transition: background 0.3s ease;
}

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

.logo h1 {
    font-size: clamp(1.4rem, 4vw, 1.8rem);
    color: var(--text-color);
    letter-spacing: 0.1em;
}

.logo span {
    color: var(--accent-color);
}

/* Desktop Nav */
.desktop-nav {
    display: none;
    gap: 30px;
}

.desktop-nav a {
    font-size: 0.9rem;
    text-transform: uppercase;
    position: relative;
}

.desktop-nav a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--accent-color);
    transition: var(--transition);
}

.desktop-nav a:hover {
    color: var(--accent-color);
}

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

/* Header Booking Button */
.header-book-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--accent-color);
    color: #000;
    font-family: var(--font-serif);
    font-size: 0.85rem;
    font-weight: 700;
    border-radius: 4px;
    transition: var(--transition);
    text-decoration: none;
    min-height: var(--touch-target);
    touch-action: manipulation;
}

.header-book-btn:hover, .header-book-btn:active {
    background: #fff;
    color: #000;
    transform: translateY(-2px);
    box-shadow: var(--shadow-gold);
}

.header-book-btn svg {
    width: 18px;
    height: 18px;
    fill: currentColor;
}

/* Mobile Menu Button (Hamburger → X) */
.hamburger {
    display: flex;
    flex-direction: column;
    cursor: pointer;
    z-index: 100;
    padding: var(--spacing-sm);
    width: var(--touch-target);
    height: var(--touch-target);
    justify-content: center;
    align-items: center;
    border-radius: 8px;
    transition: background 0.2s ease;
    position: relative;
}

.hamburger:active {
    background: rgba(212, 175, 55, 0.1);
}

.bar {
    display: block;
    width: 24px;
    height: 2px;
    margin: 3px auto;
    background-color: var(--accent-color);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1),
                opacity 0.2s ease;
    transform-origin: center;
}

/* Mobile Nav Overlay */
.mobile-nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    height: 100dvh;
    background: var(--bg-color);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 8px;
    z-index: 1500;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.mobile-nav.active {
    opacity: 1;
    visibility: visible;
}

.mobile-nav a {
    font-size: 1.4rem;
    font-family: var(--font-serif);
    padding: var(--spacing-md) var(--spacing-xl);
    min-height: var(--touch-target);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    transition: color 0.2s ease, background 0.2s ease;
    letter-spacing: 0.15em;
    color: var(--text-color);
    opacity: 0;
    transform: translateY(15px);
}

.mobile-nav.active a {
    opacity: 1;
    transform: translateY(0);
}

.mobile-nav.active a:nth-child(1) { transition: opacity 0.3s 0.05s ease, transform 0.3s 0.05s ease, color 0.2s ease, background 0.2s ease; }
.mobile-nav.active a:nth-child(2) { transition: opacity 0.3s 0.10s ease, transform 0.3s 0.10s ease, color 0.2s ease, background 0.2s ease; }
.mobile-nav.active a:nth-child(3) { transition: opacity 0.3s 0.15s ease, transform 0.3s 0.15s ease, color 0.2s ease, background 0.2s ease; }
.mobile-nav.active a:nth-child(4) { transition: opacity 0.3s 0.20s ease, transform 0.3s 0.20s ease, color 0.2s ease, background 0.2s ease; }
.mobile-nav.active a:nth-child(5) { transition: opacity 0.3s 0.25s ease, transform 0.3s 0.25s ease, color 0.2s ease, background 0.2s ease; }
.mobile-nav.active a:nth-child(6) { transition: opacity 0.3s 0.30s ease, transform 0.3s 0.30s ease, color 0.2s ease, background 0.2s ease; }

.mobile-nav a:hover,
.mobile-nav a:active {
    color: var(--accent-color);
    background: rgba(212, 175, 55, 0.08);
}

.mobile-nav .header-book-btn {
    margin-top: var(--spacing-lg) !important;
    font-size: 1rem;
    letter-spacing: 0.1em;
}

/* Hamburger → X Animation */
.hamburger.active .bar:nth-child(2) {
    opacity: 0;
}
.hamburger.active .bar:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}
.hamburger.active .bar:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}

/* Header becomes transparent over the nav overlay */
header:has(.hamburger.active),
header.nav-open {
    background: transparent !important;
    border-bottom-color: transparent;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
}

/* Hide header booking button when nav is open */
header.nav-open .header-book-btn,
header:has(.hamburger.active) .header-book-btn {
    opacity: 0;
    pointer-events: none;
}

/* --- 5. HERO SECTION --- */
.hero {
    height: 100vh;
    height: 100dvh;
    width: 100%;
    background-image: linear-gradient(rgba(0,0,0,0.3), rgba(0,0,0,0.6)), url('https://images.unsplash.com/photo-1504544750208-dc0358e63f7f?q=80&w=1920&auto=format&fit=crop');
    background-size: cover;
    background-position: center;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 0 var(--spacing-md);
}

.hero-content {
    max-width: 600px;
    padding: 0 var(--spacing-md);
}

.hero h2 {
    font-size: clamp(2rem, 7vw, 3.2rem);
    margin-bottom: var(--spacing-md);
    text-shadow: 0 2px 20px rgba(0,0,0,0.7);
    line-height: 1.3;
}

.hero h2 span {
    display: block;
    font-size: clamp(0.85rem, 2.8vw, 1.1rem);
    font-family: var(--font-main);
    font-weight: 300;
    margin-bottom: var(--spacing-sm);
    color: var(--accent-color);
    letter-spacing: 0.2em;
}

.hero p {
    font-size: clamp(0.85rem, 2.5vw, 1.05rem);
    margin-bottom: var(--spacing-xl);
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
    opacity: 0.9;
    line-height: 2;
}

.hero-buttons {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    align-items: center;
}

.hero-buttons .btn-gold:first-child {
    font-size: 0.9rem;
    opacity: 0.85;
}

.hero-buttons .btn-gold:last-child {
    font-size: 1rem;
    padding: var(--spacing-md) var(--spacing-xl);
    font-weight: 700;
    letter-spacing: 0.1em;
}

/* --- 6. SECTIONS & LAYOUT --- */
section {
    padding: 60px 0;
    overflow: hidden;
}

/* News Ticker */
.news-bar {
    background: var(--bg-secondary);
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid #333;
}

.news-container {
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.news-label {
    color: var(--accent-color);
    font-weight: bold;
    border: 1px solid var(--accent-color);
    padding: 2px 8px;
}

/* Concept (Grid Layout) */
.concept-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
    align-items: center;
    overflow: hidden;
}

.concept-img {
    position: relative;
}

.concept-img::before {
    content: '';
    position: absolute;
    top: -10px; left: -10px;
    width: 100%; height: 100%;
    border: 1px solid var(--accent-color);
    z-index: -1;
}

.concept-content { order: 1; }
.concept-img { order: 2; }

/* Menu (Card Grid) */
.menu-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
}

.menu-card {
    background: var(--bg-secondary);
    transition: var(--transition);
    overflow: hidden;
    position: relative;
    border-radius: 8px;
}

.menu-card:hover, .menu-card:active {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.5);
}

.menu-card img {
    height: 200px;
    transition: var(--transition);
}

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

.menu-info {
    padding: var(--spacing-lg);
    text-align: center;
}

.menu-info h3 {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-xs);
    color: var(--text-color);
}

.menu-info p {
    font-size: 0.85rem;
    color: #aaa;
    margin-bottom: var(--spacing-sm);
}

.price {
    color: var(--accent-color);
    font-weight: bold;
    font-size: 1.1rem;
    font-family: var(--font-serif);
}

/* Space Section */
.space-section {
    background-color: var(--bg-secondary);
}

/* --- 7. BOOKING WIDGET (Mobile Optimized) --- */
.booking-section {
    background: linear-gradient(135deg, var(--bg-color) 0%, #0d0d0d 100%);
    position: relative;
    overflow: hidden;
    padding: 40px 0;
}

.booking-section::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: url('https://images.unsplash.com/photo-1555939594-58d7cb561ad1?q=80&w=1920&auto=format&fit=crop');
    background-size: cover;
    background-position: center;
    opacity: 0.1;
}

.booking-container {
    position: relative;
    z-index: 1;
    max-width: 500px;
    margin: 0 auto;
}

.booking-widget {
    background: rgba(37, 37, 37, 0.98);
    border: 1px solid rgba(212, 175, 55, 0.3);
    border-radius: 12px;
    padding: var(--spacing-lg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

/* Progress Steps */
.booking-progress {
    display: flex;
    justify-content: space-between;
    margin-bottom: var(--spacing-xl);
    position: relative;
}

.booking-progress::before {
    content: '';
    position: absolute;
    top: 20px;
    left: 12%;
    right: 12%;
    height: 2px;
    background: #333;
}

.progress-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
    z-index: 1;
}

.step-number {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: #333;
    border: 2px solid #444;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-serif);
    font-size: 1rem;
    color: #666;
    transition: var(--transition);
    margin-bottom: var(--spacing-xs);
}

.progress-step.active .step-number,
.progress-step.completed .step-number {
    background: var(--accent-color);
    border-color: var(--accent-color);
    color: #000;
}

.progress-step.completed .step-number::after {
    content: '✓';
}

.step-label {
    font-size: 0.7rem;
    color: #666;
    text-align: center;
    transition: var(--transition);
}

.progress-step.active .step-label,
.progress-step.completed .step-label {
    color: var(--accent-color);
}

/* Booking Steps Content */
.booking-step {
    display: none;
    animation: fadeInUp 0.4s ease;
}

.booking-step.active {
    display: block;
}

.step-title {
    font-family: var(--font-serif);
    font-size: 1.3rem;
    color: var(--text-color);
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

.step-title span {
    display: block;
    font-size: 0.8rem;
    color: #888;
    font-family: var(--font-main);
    font-weight: 300;
    margin-top: 4px;
}

/* Date Picker (Mobile Optimized) */
.month-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
}

.month-nav button {
    background: transparent;
    border: 1px solid #444;
    color: var(--text-color);
    padding: var(--spacing-sm) var(--spacing-md);
    cursor: pointer;
    transition: var(--transition);
    font-size: 1.4rem;
    min-width: var(--touch-target);
    min-height: var(--touch-target);
    border-radius: 4px;
}

.month-nav button:active {
    border-color: var(--accent-color);
    color: var(--accent-color);
}

.current-month {
    font-family: var(--font-serif);
    font-size: 1rem;
}

.date-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 6px;
    margin-bottom: var(--spacing-md);
}

.date-header {
    text-align: center;
    font-size: 0.7rem;
    color: #888;
    padding: var(--spacing-xs) 0;
}

.date-header:first-child { color: #e74c3c; }
.date-header:last-child { color: #3498db; }

.date-cell {
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid #333;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: var(--transition);
    background: transparent;
    color: var(--text-color);
    min-height: 42px;
    touch-action: manipulation;
}

.date-cell:active:not(.disabled):not(.empty) {
    border-color: var(--accent-color);
    background: rgba(212, 175, 55, 0.1);
}

.date-cell.selected {
    background: var(--accent-color);
    border-color: var(--accent-color);
    color: #000;
    font-weight: 700;
}

.date-cell.disabled {
    color: #444;
    cursor: not-allowed;
    opacity: 0.5;
}

.date-cell.empty {
    border: none;
    cursor: default;
}

.date-cell.sunday { color: #e74c3c; }
.date-cell.saturday { color: #3498db; }
.date-cell.sunday.selected,
.date-cell.saturday.selected { color: #000; }

/* Time Picker (Mobile Optimized) */
.time-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-sm);
}

.time-slot {
    padding: var(--spacing-md);
    border: 1px solid #333;
    border-radius: 8px;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    background: transparent;
    color: var(--text-color);
    font-size: 1rem;
    min-height: var(--touch-target);
    touch-action: manipulation;
}

.time-slot:active:not(.disabled) {
    border-color: var(--accent-color);
    background: rgba(212, 175, 55, 0.1);
}

.time-slot.selected {
    background: var(--accent-color);
    border-color: var(--accent-color);
    color: #000;
    font-weight: 700;
}

.time-slot.disabled {
    color: #444;
    cursor: not-allowed;
    border-color: #2a2a2a;
}

/* Guest Picker (Mobile Optimized) */
.guest-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-sm);
}

.guest-btn {
    padding: var(--spacing-md);
    border: 1px solid #333;
    border-radius: 8px;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    background: transparent;
    color: var(--text-color);
    min-height: 70px;
    touch-action: manipulation;
}

.guest-btn:active {
    border-color: var(--accent-color);
    background: rgba(212, 175, 55, 0.1);
}

.guest-btn.selected {
    background: var(--accent-color);
    border-color: var(--accent-color);
    color: #000;
}

.guest-btn .num {
    font-size: 1.4rem;
    font-family: var(--font-serif);
    display: block;
}

.guest-btn .label {
    font-size: 0.7rem;
    color: #888;
}

.guest-btn.selected .label {
    color: #333;
}

/* Form Inputs (Mobile Optimized) */
.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-size: 0.9rem;
    color: #aaa;
}

.form-group label .required {
    color: #e74c3c;
    margin-left: 4px;
}

.form-input {
    width: 100%;
    padding: var(--spacing-md);
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid #333;
    border-radius: 8px;
    color: var(--text-color);
    font-size: 16px; /* Prevent zoom on iOS */
    font-family: var(--font-main);
    transition: var(--transition);
    min-height: var(--touch-target);
}

.form-input:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(212, 175, 55, 0.1);
}

.form-input::placeholder {
    color: #555;
}

textarea.form-input {
    resize: vertical;
    min-height: 100px;
}

/* Navigation Buttons (Mobile Optimized) */
.booking-nav {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-lg);
}

.btn-booking {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-lg);
    border: 1px solid var(--accent-color);
    background: transparent;
    color: var(--accent-color);
    font-family: var(--font-serif);
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    min-height: 52px;
    border-radius: 8px;
    touch-action: manipulation;
}

.btn-booking::before {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 0%; height: 100%;
    background: var(--accent-color);
    z-index: -1;
    transition: var(--transition);
}

.btn-booking:active {
    color: #000;
}

.btn-booking:active::before {
    width: 100%;
}

.btn-booking.btn-back {
    border-color: #444;
    color: #888;
    order: 2;
}

.btn-booking.btn-back::before {
    background: #444;
}

.btn-booking.btn-back:active {
    color: #fff;
}

.btn-booking:not(.btn-back) {
    order: 1;
}

.btn-booking:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Confirmation Summary */
.confirmation-summary {
    background: rgba(0, 0, 0, 0.3);
    border-radius: 12px;
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.summary-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid #333;
}

.summary-row:last-child {
    border-bottom: none;
}

.summary-label {
    color: #888;
    font-size: 0.85rem;
}

.summary-value {
    color: var(--text-color);
    font-family: var(--font-serif);
    text-align: right;
}

/* Success State */
.booking-success {
    text-align: center;
    padding: var(--spacing-xl) var(--spacing-md);
}

.success-icon {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: var(--accent-color);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-lg);
    font-size: 2.5rem;
    color: #000;
    animation: scaleIn 0.5s ease;
}

.success-title {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    color: var(--accent-color);
    margin-bottom: var(--spacing-md);
}

.success-message {
    color: #aaa;
    margin-bottom: var(--spacing-xl);
    line-height: 1.8;
    font-size: 0.9rem;
}

/* Floating Book Button (Mobile) */
.floating-book-btn {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--accent-color);
    border: none;
    cursor: pointer;
    box-shadow: var(--shadow-gold);
    z-index: 999;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    touch-action: manipulation;
}

.floating-book-btn:active {
    transform: scale(0.95);
}

.floating-book-btn svg {
    width: 24px;
    height: 24px;
    fill: #000;
}

/* --- 8. FOOTER --- */
footer {
    background-color: #000;
    padding: 40px 0 20px;
    border-top: 1px solid #333;
    text-align: center;
}

.footer-logo {
    font-family: var(--font-serif);
    font-size: 1.8rem;
    color: var(--accent-color);
    margin-bottom: var(--spacing-md);
}

.footer-info {
    color: #888;
    margin-bottom: var(--spacing-lg);
    font-size: 0.9rem;
}

.footer-info .phone {
    font-size: 1.4rem;
    color: #fff;
    margin: var(--spacing-sm) 0;
}

.footer-info a {
    color: var(--accent-color);
}

.copyright {
    font-size: 0.75rem;
    color: #555;
    border-top: 1px solid #222;
    padding-top: var(--spacing-md);
}

/* --- 9. ANIMATIONS --- */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes scaleIn {
    from { transform: scale(0); }
    to { transform: scale(1); }
}

/* --- 10. RESPONSIVE (Tablet & Desktop) --- */
@media (min-width: 768px) {
    .hamburger { display: none; }
    .desktop-nav { display: flex; }

    .hero {
        background-attachment: fixed;
    }

    .hero-buttons {
        flex-direction: row;
        gap: var(--spacing-md);
    }

    section {
        padding: 100px 0;
    }

    .concept-grid {
        grid-template-columns: 1fr 1fr;
        gap: 50px;
    }

    .concept-content { order: initial; }
    .concept-img { order: initial; }

    .concept-img::before {
        top: -15px; left: -15px;
    }

    .menu-grid {
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    }

    .menu-card img {
        height: 250px;
    }

    .booking-widget {
        padding: 40px;
    }

    .booking-nav {
        flex-direction: row;
    }

    .btn-booking {
        width: auto;
        flex: 1;
    }

    .btn-booking.btn-back {
        order: initial;
    }

    .btn-booking:not(.btn-back) {
        order: initial;
    }

    .guest-grid {
        grid-template-columns: repeat(4, 1fr);
    }

    .floating-book-btn {
        bottom: 30px;
        right: 30px;
        width: 60px;
        height: 60px;
    }
}

@media (min-width: 1024px) {
    .header-book-btn:not(.mobile-nav .header-book-btn) {
        display: inline-flex;
        margin-left: 20px;
    }

    .floating-book-btn {
        display: none;
    }
}

/* --- 11. AOS CUSTOM ANIMATIONS --- */
[data-aos] {
    pointer-events: none;
}

[data-aos].aos-animate {
    pointer-events: auto;
}

[data-aos="fade-up-custom"] {
    transform: translateY(30px);
    opacity: 0;
    transition-property: transform, opacity;
}

[data-aos="fade-up-custom"].aos-animate {
    transform: translateY(0);
    opacity: 1;
}

/* Reduce motion for users who prefer it */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    [data-aos] {
        opacity: 1 !important;
        transform: none !important;
    }
}

/* --- 12. CHAT WIDGET --- */
.chat-widget {
    position: fixed;
    bottom: 20px;
    left: 20px;
    z-index: 1000;
    font-family: var(--font-main);
}

.chat-toggle {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: linear-gradient(135deg, #00B900 0%, #00a000 100%);
    border: none;
    cursor: pointer;
    box-shadow: 0 4px 20px rgba(0, 185, 0, 0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    position: relative;
}

.chat-toggle:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 30px rgba(0, 185, 0, 0.5);
}

.chat-toggle:active {
    transform: scale(0.95);
}

.chat-toggle svg {
    width: 26px;
    height: 26px;
    fill: #fff;
    transition: var(--transition);
}

.chat-toggle .close-icon {
    display: none;
}

.chat-widget.active .chat-toggle .chat-icon {
    display: none;
}

.chat-widget.active .chat-toggle .close-icon {
    display: block;
}

.chat-badge {
    position: absolute;
    top: -4px;
    right: -4px;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: #e74c3c;
    color: #fff;
    font-size: 0.7rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: pulse 2s infinite;
}

.chat-badge.hidden {
    display: none;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

/* Chat Window */
.chat-window {
    position: absolute;
    bottom: 70px;
    left: 0;
    width: 340px;
    max-width: calc(100vw - 40px);
    height: 480px;
    max-height: calc(100vh - 140px);
    background: var(--bg-secondary);
    border-radius: 16px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px) scale(0.95);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid rgba(212, 175, 55, 0.2);
}

.chat-widget.active .chat-window {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
}

/* Chat Header */
.chat-header {
    background: linear-gradient(135deg, var(--bg-color) 0%, #0d0d0d 100%);
    padding: var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid rgba(212, 175, 55, 0.3);
}

.chat-header-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.chat-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--accent-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-serif);
    font-size: 1.2rem;
    color: #000;
    font-weight: 700;
}

.chat-header-text h4 {
    font-size: 0.95rem;
    color: var(--text-color);
    margin-bottom: 2px;
}

.chat-status {
    font-size: 0.75rem;
    color: #00B900;
    display: flex;
    align-items: center;
    gap: 4px;
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #00B900;
    animation: pulse 2s infinite;
}

.chat-close {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: transparent;
    border: 1px solid #444;
    color: #888;
    font-size: 1.2rem;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.chat-close:hover {
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
}

/* Chat Messages */
.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    background: var(--bg-color);
}

.chat-message {
    max-width: 85%;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: 16px;
    font-size: 0.9rem;
    line-height: 1.5;
    animation: messageIn 0.3s ease;
}

@keyframes messageIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.chat-message.incoming {
    background: var(--bg-secondary);
    border-bottom-left-radius: 4px;
    align-self: flex-start;
}

.chat-message.outgoing {
    background: var(--accent-color);
    color: #000;
    border-bottom-right-radius: 4px;
    align-self: flex-end;
}

.chat-message .time {
    font-size: 0.7rem;
    opacity: 0.7;
    margin-top: 4px;
    display: block;
}

.chat-message.incoming .time {
    color: #888;
}

.chat-message.outgoing .time {
    color: #333;
}

/* Typing Indicator */
.typing-indicator {
    display: flex;
    gap: 4px;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-secondary);
    border-radius: 16px;
    align-self: flex-start;
    width: fit-content;
}

.typing-indicator span {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #666;
    animation: typing 1.4s infinite ease-in-out;
}

.typing-indicator span:nth-child(1) { animation-delay: 0s; }
.typing-indicator span:nth-child(2) { animation-delay: 0.2s; }
.typing-indicator span:nth-child(3) { animation-delay: 0.4s; }

@keyframes typing {
    0%, 60%, 100% { transform: translateY(0); }
    30% { transform: translateY(-8px); }
}

/* Quick Actions */
.chat-quick-actions {
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-color);
    border-top: 1px solid #333;
    display: flex;
    gap: var(--spacing-xs);
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.chat-quick-actions::-webkit-scrollbar {
    display: none;
}

.quick-action-btn {
    flex-shrink: 0;
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--bg-secondary);
    border: 1px solid #444;
    border-radius: 20px;
    color: var(--text-color);
    font-size: 0.8rem;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}

.quick-action-btn:hover, .quick-action-btn:active {
    background: var(--accent-color);
    color: #000;
    border-color: var(--accent-color);
}

/* Chat Input */
.chat-input-area {
    background: var(--bg-secondary);
    padding: var(--spacing-sm);
    border-top: 1px solid #333;
}

.chat-customer-name {
    display: flex;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-xs);
}

.chat-customer-name.hidden {
    display: none;
}

.chat-name-input {
    flex: 1;
    padding: var(--spacing-xs) var(--spacing-sm);
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid #444;
    border-radius: 8px;
    color: var(--text-color);
    font-size: 0.85rem;
}

.chat-name-input:focus {
    outline: none;
    border-color: var(--accent-color);
}

.chat-name-save {
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--accent-color);
    border: none;
    border-radius: 8px;
    color: #000;
    font-size: 0.85rem;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
}

.chat-name-save:hover {
    background: #fff;
}

.chat-input-wrapper {
    display: flex;
    gap: var(--spacing-xs);
    align-items: flex-end;
}

.chat-input-wrapper textarea {
    flex: 1;
    padding: var(--spacing-sm);
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid #444;
    border-radius: 12px;
    color: var(--text-color);
    font-size: 16px;
    font-family: var(--font-main);
    resize: none;
    min-height: 44px;
    max-height: 100px;
    line-height: 1.4;
}

.chat-input-wrapper textarea:focus {
    outline: none;
    border-color: var(--accent-color);
}

.chat-input-wrapper textarea::placeholder {
    color: #666;
}

.chat-send {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--accent-color);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    flex-shrink: 0;
}

.chat-send:hover {
    background: #fff;
    transform: scale(1.05);
}

.chat-send:active {
    transform: scale(0.95);
}

.chat-send svg {
    width: 20px;
    height: 20px;
    fill: #000;
}

/* Chat Footer with LINE */
.chat-footer {
    padding: var(--spacing-sm);
    background: var(--bg-secondary);
    border-top: 1px solid #333;
}

.line-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm);
    background: #00B900;
    border-radius: 8px;
    color: #fff;
    font-size: 0.85rem;
    font-weight: 700;
    transition: var(--transition);
}

.line-btn:hover {
    background: #00a000;
}

.line-btn svg {
    width: 20px;
    height: 20px;
    fill: #fff;
}

/* Mobile adjustments for chat */
@media (max-width: 480px) {
    .chat-widget {
        bottom: 15px;
        left: 15px;
    }

    .chat-window {
        width: calc(100vw - 30px);
        height: calc(100vh - 100px);
        bottom: 65px;
        left: 0;
        right: 0;
        border-radius: 12px;
    }

    .chat-toggle {
        width: 52px;
        height: 52px;
    }
}

/* Adjust floating book button position when chat exists */
.floating-book-btn {
    right: 20px;
    left: auto;
}