/* ========================================
   TonoIzakaya - 居酒屋风格网站样式
   ======================================== */

/* --- CSS Variables --- */
:root {
    --color-bg-primary: #1a1a1a;
    --color-bg-secondary: #242424;
    --color-bg-card: #2d2d2d;
    --color-bg-dark: #111111;
    --color-text-primary: #f5f0e8;
    --color-text-secondary: #b8a88a;
    --color-text-muted: #7a7062;
    --color-accent: #e8733a;
    --color-accent-hover: #ff8c42;
    --color-accent-dark: #c45a25;
    --color-gold: #d4a847;
    --color-gold-light: #f0d078;
    --color-warm-white: #faf5eb;
    --color-border: #3d3529;
    --font-jp: 'Noto Serif JP', serif;
    --font-body: 'Noto Sans JP', sans-serif;
    --transition: all 0.3s ease;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.6);
    --radius: 8px;
    --radius-lg: 16px;
}

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

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

body {
    font-family: var(--font-body);
    background-color: var(--color-bg-primary);
    color: var(--color-text-primary);
    line-height: 1.7;
    overflow-x: hidden;
}

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

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* --- Header --- */
#header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(17, 17, 17, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
    transition: var(--transition);
}

#header.scrolled {
    background: rgba(17, 17, 17, 0.98);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.5);
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.logo {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.logo-jp {
    font-family: var(--font-jp);
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--color-gold);
    line-height: 1.2;
}

.logo-en {
    font-size: 0.75rem;
    letter-spacing: 2px;
    color: var(--color-text-muted);
    text-transform: uppercase;
}

.nav {
    display: flex;
    gap: 32px;
}

.nav a {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    position: relative;
    padding: 5px 0;
    letter-spacing: 1px;
}

.nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-accent);
    transition: var(--transition);
}

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

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

/* Mobile Menu Toggle */
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-text-primary);
    transition: var(--transition);
}

/* --- Hero Section --- */
.hero {
    position: relative;
    height: 100vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: url('https://images.unsplash.com/photo-1514933651103-005eec06c04b?w=1920&h=1080&fit=crop') center/cover no-repeat;
    text-align: center;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        to bottom,
        rgba(17, 17, 17, 0.7) 0%,
        rgba(17, 17, 17, 0.5) 50%,
        rgba(26, 26, 26, 0.9) 100%
    );
}

.hero-content {
    position: relative;
    z-index: 2;
    padding: 20px;
}

.hero-lantern {
    font-size: 4rem;
    margin-bottom: 20px;
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.hero-title {
    font-family: var(--font-jp);
    font-size: 4rem;
    font-weight: 900;
    color: var(--color-warm-white);
    letter-spacing: 4px;
    margin-bottom: 8px;
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

.hero-subtitle-jp {
    font-family: var(--font-jp);
    font-size: 1.8rem;
    color: var(--color-gold);
    margin-bottom: 24px;
    letter-spacing: 8px;
}

.hero-tagline {
    font-size: 1.3rem;
    color: var(--color-text-primary);
    margin-bottom: 12px;
    font-weight: 300;
}

.hero-desc {
    font-size: 0.95rem;
    color: var(--color-text-secondary);
    margin-bottom: 40px;
}

.hero-btn {
    display: inline-block;
    padding: 14px 40px;
    background: var(--color-accent);
    color: white;
    font-size: 1rem;
    font-weight: 500;
    border-radius: var(--radius);
    letter-spacing: 2px;
    transition: var(--transition);
    box-shadow: 0 4px 15px rgba(232, 115, 58, 0.3);
}

.hero-btn:hover {
    background: var(--color-accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(232, 115, 58, 0.5);
}

.hero-scroll {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    text-align: center;
    color: var(--color-text-muted);
    font-size: 0.8rem;
}

.scroll-arrow {
    margin-top: 8px;
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
    40% { transform: translateY(8px); }
    60% { transform: translateY(4px); }
}

/* --- Features Section --- */
.features {
    padding: 80px 0;
    background: var(--color-bg-secondary);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.feature-card {
    text-align: center;
    padding: 40px 20px;
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-5px);
    border-color: var(--color-accent);
    box-shadow: var(--shadow);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 16px;
}

.feature-card h3 {
    font-family: var(--font-jp);
    font-size: 1.2rem;
    color: var(--color-gold);
    margin-bottom: 8px;
}

.feature-card p {
    font-size: 0.85rem;
    color: var(--color-text-secondary);
}

/* --- Section Common --- */
.section-header {
    text-align: center;
    margin-bottom: 50px;
}

.section-tag {
    display: inline-block;
    font-size: 0.75rem;
    letter-spacing: 4px;
    color: var(--color-accent);
    border: 1px solid var(--color-accent);
    padding: 4px 16px;
    border-radius: 20px;
    margin-bottom: 16px;
}

.section-title {
    font-family: var(--font-jp);
    font-size: 2.5rem;
    color: var(--color-warm-white);
    margin-bottom: 8px;
}

.section-subtitle {
    font-family: var(--font-jp);
    font-size: 1.1rem;
    color: var(--color-text-muted);
}

/* --- Menu Section --- */
.menu-section {
    padding: 100px 0;
    background: var(--color-bg-primary);
}

.menu-tabs {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.tab-btn {
    padding: 10px 24px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    border-radius: 30px;
    cursor: pointer;
    transition: var(--transition);
    font-family: var(--font-body);
}

.tab-btn:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
}

.tab-btn.active {
    background: var(--color-accent);
    border-color: var(--color-accent);
    color: white;
}

.menu-content {
    display: none;
}

.menu-content.active {
    display: block;
    animation: fadeIn 0.4s ease;
}

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

.menu-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.menu-item {
    display: flex;
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--color-border);
    transition: var(--transition);
}

.menu-item:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow);
    border-color: var(--color-gold);
}

.menu-item-img {
    width: 140px;
    min-height: 120px;
    flex-shrink: 0;
    overflow: hidden;
}

.menu-item-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

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

.menu-item-info {
    padding: 20px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.menu-item-info h4 {
    font-family: var(--font-jp);
    font-size: 1.1rem;
    color: var(--color-warm-white);
    margin-bottom: 6px;
}

.menu-item-desc {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    margin-bottom: 10px;
}

.menu-item-price {
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-gold);
}

/* --- About Section --- */
.about-section {
    padding: 100px 0;
    background: var(--color-bg-secondary);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: start;
}

.about-info {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.info-card {
    display: flex;
    gap: 20px;
    padding: 24px;
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    transition: var(--transition);
}

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

.info-icon {
    font-size: 2rem;
    flex-shrink: 0;
}

.info-content h4 {
    font-family: var(--font-jp);
    font-size: 1.1rem;
    color: var(--color-gold);
    margin-bottom: 8px;
}

.info-content p {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    line-height: 1.8;
}

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

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

.info-note {
    font-size: 0.8rem !important;
    color: var(--color-text-muted) !important;
    margin-top: 4px;
}

.map-placeholder {
    width: 100%;
    height: 100%;
    min-height: 400px;
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: center;
}

.map-overlay-text {
    text-align: center;
    color: var(--color-text-muted);
}

.map-overlay-text span {
    font-size: 3rem;
    display: block;
    margin-bottom: 16px;
}

.map-overlay-text p {
    font-size: 1rem;
    line-height: 1.8;
}

.map-note {
    font-size: 0.8rem !important;
    margin-top: 12px;
    color: var(--color-accent) !important;
}

/* --- Reservation Section --- */
.reservation-section {
    padding: 100px 0;
    background: var(--color-bg-primary);
}

.reservation-wrapper {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 40px;
    align-items: start;
}

.reservation-info {
    padding: 40px;
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
}

.reservation-info h3 {
    font-family: var(--font-jp);
    font-size: 1.3rem;
    color: var(--color-gold);
    margin-bottom: 20px;
}

.reservation-info ul {
    list-style: none;
    margin-bottom: 30px;
}

.reservation-info ul li {
    font-size: 0.85rem;
    color: var(--color-text-secondary);
    margin-bottom: 10px;
    line-height: 1.6;
}

.reservation-contact {
    padding-top: 20px;
    border-top: 1px solid var(--color-border);
}

.reservation-contact p {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    margin-bottom: 10px;
}

.phone-link {
    font-size: 1.1rem;
    color: var(--color-accent);
    font-weight: 500;
}

.phone-link:hover {
    color: var(--color-accent-hover);
}

/* Form Styles */
.reservation-form {
    padding: 40px;
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group.full-width {
    margin-bottom: 20px;
}

.form-group label {
    font-size: 0.85rem;
    color: var(--color-text-secondary);
    margin-bottom: 8px;
    font-weight: 500;
}

.required {
    color: var(--color-accent);
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 12px 16px;
    background: var(--color-bg-primary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    color: var(--color-text-primary);
    font-size: 0.95rem;
    font-family: var(--font-body);
    transition: var(--transition);
    outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(232, 115, 58, 0.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--color-text-muted);
}

.form-group textarea {
    resize: vertical;
    min-height: 80px;
}

.submit-btn {
    width: 100%;
    padding: 16px;
    background: var(--color-accent);
    color: white;
    font-size: 1rem;
    font-weight: 500;
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    transition: var(--transition);
    letter-spacing: 2px;
    font-family: var(--font-body);
}

.submit-btn:hover {
    background: var(--color-accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(232, 115, 58, 0.3);
}

/* --- Footer --- */
.footer {
    padding: 60px 0 30px;
    background: var(--color-bg-dark);
    border-top: 1px solid var(--color-border);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 40px;
    flex-wrap: wrap;
    gap: 30px;
}

.footer-brand {
    display: flex;
    flex-direction: column;
}

.footer-logo-jp {
    font-family: var(--font-jp);
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--color-gold);
}

.footer-logo-en {
    font-size: 0.8rem;
    letter-spacing: 2px;
    color: var(--color-text-muted);
    margin-bottom: 8px;
}

.footer-slogan {
    font-size: 0.85rem;
    color: var(--color-text-secondary);
}

.footer-links {
    display: flex;
    gap: 24px;
}

.footer-links a {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
}

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

.footer-social {
    display: flex;
    gap: 16px;
}

.footer-social a {
    padding: 8px 16px;
    background: var(--color-bg-card);
    border-radius: 20px;
    font-size: 0.8rem;
    color: var(--color-text-secondary);
    border: 1px solid var(--color-border);
}

.footer-social a:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid var(--color-border);
}

.footer-bottom p {
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

/* --- Back to Top --- */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 48px;
    height: 48px;
    background: var(--color-accent);
    color: white;
    border: none;
    border-radius: 50%;
    font-size: 1.2rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 999;
    box-shadow: 0 4px 15px rgba(232, 115, 58, 0.3);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--color-accent-hover);
    transform: translateY(-3px);
}

/* ========================================
   Responsive Design
   ======================================== */

@media (max-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

    .reservation-wrapper {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .menu-toggle {
        display: flex;
    }

    .nav {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: rgba(17, 17, 17, 0.98);
        flex-direction: column;
        align-items: center;
        padding: 30px;
        gap: 20px;
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition);
        border-bottom: 1px solid var(--color-border);
    }

    .nav.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

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

    .hero-subtitle-jp {
        font-size: 1.3rem;
    }

    .hero-tagline {
        font-size: 1rem;
    }

    .section-title {
        font-size: 1.8rem;
    }

    .features-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }

    .feature-card {
        padding: 24px 16px;
    }

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

    .form-row {
        grid-template-columns: 1fr;
    }

    .menu-item {
        flex-direction: column;
    }

    .menu-item-img {
        width: 100%;
        height: 160px;
    }

    .footer-content {
        flex-direction: column;
        text-align: center;
    }

    .footer-brand {
        align-items: center;
    }

    .menu-tabs {
        gap: 8px;
    }

    .tab-btn {
        padding: 8px 16px;
        font-size: 0.8rem;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }

    .hero-lantern {
        font-size: 3rem;
    }

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

    .feature-icon {
        font-size: 2rem;
    }

    .reservation-form,
    .reservation-info {
        padding: 24px;
    }

    .container {
        padding: 0 16px;
    }
}