/* ====================================
   天然いのしし - Redesigned Styles
   ==================================== */

/* ====================================
   CSS Variables & Reset
   ==================================== */
:root {
    /* Colors - Dark izakaya theme */
    --color-bg-dark: #0f0d0b;
    --color-bg-main: #1a1512;
    --color-bg-card: #231e1a;
    --color-bg-accent: #2d2620;
    
    --color-gold: #d4a574;
    --color-gold-light: #e8c9a6;
    --color-gold-dark: #a67c52;
    
    --color-text-main: #f5f0e8;
    --color-text-sub: #c4b8a8;
    --color-text-muted: #8a7e70;
    
    /* Typography */
    --font-serif: 'Noto Serif JP', 'Yu Mincho', 'Hiragino Mincho ProN', serif;
    --font-sans: 'Hiragino Kaku Gothic ProN', 'Hiragino Sans', 'Yu Gothic', sans-serif;
    
    /* Spacing */
    --section-padding: 120px;
    --section-padding-sp: 80px;
    
    /* Header */
    --header-height: 80px;
    --header-height-sp: 60px;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.6s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--header-height);
}

body {
    font-family: var(--font-sans);
    color: var(--color-text-main);
    background-color: var(--color-bg-dark);
    line-height: 1.8;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

a:hover {
    color: var(--color-gold);
}

/* ====================================
   Container
   ==================================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 40px;
}

/* ====================================
   Header
   ==================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    background: rgba(15, 13, 11, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    transition: transform var(--transition-base), background var(--transition-base);
}

.header.hidden {
    transform: translateY(-100%);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 40px;
}

.header-logo {
    font-family: var(--font-serif);
    font-size: 24px;
    font-weight: 500;
    letter-spacing: 0.1em;
    color: var(--color-text-main);
}

.header-logo:hover {
    color: var(--color-gold);
}

.nav-list {
    display: flex;
    gap: 40px;
    list-style: none;
}

.nav-link {
    font-size: 13px;
    font-weight: 500;
    letter-spacing: 0.15em;
    color: var(--color-text-sub);
    transition: color var(--transition-fast);
}

.nav-link:hover {
    color: var(--color-gold);
}

.nav-link.reservation-link {
    padding: 10px 24px;
    background: var(--color-gold);
    color: var(--color-bg-dark);
    border-radius: 2px;
}

.nav-link.reservation-link:hover {
    background: var(--color-gold-light);
    color: var(--color-bg-dark);
}

/* Hamburger Menu */
.hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 44px;
    height: 44px;
    background: transparent;
    border: none;
    cursor: pointer;
    gap: 6px;
    z-index: 1001;
}

.hamburger span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-text-main);
    transition: transform var(--transition-base), opacity var(--transition-base);
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

/* ====================================
   Section Common Styles
   ==================================== */
.section {
    padding: var(--section-padding) 0;
}

.section-header {
    text-align: center;
    margin-bottom: 80px;
}

.section-label {
    display: block;
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 0.3em;
    color: var(--color-gold);
    margin-bottom: 16px;
}

.section-title {
    font-family: var(--font-serif);
    font-size: 32px;
    font-weight: 400;
    letter-spacing: 0.15em;
    color: var(--color-text-main);
}

/* Fade-in Animation Base */
.fade-in {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in.is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* ====================================
   HERO Section
   ==================================== */
.hero {
    position: relative;
    width: 100%;
    height: 100vh;
    min-height: 700px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

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

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        to bottom,
        rgba(15, 13, 11, 0.3) 0%,
        rgba(15, 13, 11, 0.5) 50%,
        rgba(15, 13, 11, 0.8) 100%
    );
    z-index: 2;
}

.hero-content {
    position: relative;
    z-index: 3;
    text-align: center;
    color: var(--color-text-main);
    padding: 0 20px;
}

.hero-subtitle {
    font-size: 14px;
    font-weight: 400;
    letter-spacing: 0.3em;
    color: var(--color-gold);
    margin-bottom: 24px;
}

.hero-title {
    margin-bottom: 40px;
}

.title-vertical {
    font-family: var(--font-serif);
    font-size: 64px;
    font-weight: 400;
    letter-spacing: 0.2em;
    line-height: 1.3;
    display: block;
}

.hero-copy {
    font-size: 16px;
    font-weight: 300;
    letter-spacing: 0.1em;
    line-height: 2.2;
    color: var(--color-text-sub);
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 3;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    cursor: pointer;
}

.scroll-text {
    font-size: 11px;
    letter-spacing: 0.2em;
    color: var(--color-text-muted);
}

.scroll-line {
    width: 1px;
    height: 50px;
    background: linear-gradient(to bottom, var(--color-gold) 50%, transparent 50%);
    background-size: 100% 200%;
    animation: scroll-line 1.5s ease-in-out infinite;
}

@keyframes scroll-line {
    0% {
        background-position: 0 -100%;
    }
    100% {
        background-position: 0 100%;
    }
}

/* ====================================
   CONCEPT Section
   ==================================== */
.concept {
    background-color: var(--color-bg-main);
}

.concept-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.concept-image img {
    width: 100%;
    height: 500px;
    object-fit: cover;
    border-radius: 4px;
}

.concept-content {
    padding: 20px 0;
}

.concept-text {
    font-size: 15px;
    line-height: 2.4;
    margin-bottom: 32px;
    color: var(--color-text-sub);
}

.concept-text.lead {
    font-family: var(--font-serif);
    font-size: 18px;
    color: var(--color-text-main);
}

.concept-text strong {
    font-weight: 500;
    color: var(--color-gold);
}

.concept-text:last-of-type {
    margin-bottom: 40px;
}

.concept-badge {
    display: inline-block;
    padding: 12px 24px;
    background: rgba(212, 165, 116, 0.15);
    border: 1px solid var(--color-gold);
    border-radius: 2px;
}

.badge-text {
    font-size: 13px;
    letter-spacing: 0.1em;
    color: var(--color-gold);
}

/* ====================================
   FOOD / MENU Section
   ==================================== */
.food {
    background-color: var(--color-bg-dark);
}

.food-gallery {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.food-item {
    position: relative;
    overflow: hidden;
    border-radius: 4px;
}

.food-image-wrapper {
    position: relative;
    aspect-ratio: 1;
    overflow: hidden;
}

.food-image-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.food-item:hover .food-image-wrapper img {
    transform: scale(1.08);
}

.food-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 30px 20px 20px;
    background: linear-gradient(to top, rgba(15, 13, 11, 0.95), transparent);
    display: flex;
    flex-direction: column;
    gap: 8px;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity var(--transition-base), transform var(--transition-base);
}

.food-item:hover .food-overlay {
    opacity: 1;
    transform: translateY(0);
}

.food-name {
    font-family: var(--font-serif);
    font-size: 16px;
    letter-spacing: 0.1em;
    color: var(--color-text-main);
}

.food-tag {
    display: inline-block;
    align-self: flex-start;
    padding: 4px 12px;
    background: var(--color-gold);
    color: var(--color-bg-dark);
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 0.1em;
    border-radius: 2px;
}

.food-note {
    margin-top: 40px;
    text-align: center;
    font-size: 13px;
    color: var(--color-text-muted);
}

/* ====================================
   SEAT / SPACE Section
   ==================================== */
.seat {
    background-color: var(--color-bg-main);
}

.seat-content {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 80px;
    align-items: center;
}

.seat-image img {
    width: 100%;
    height: 450px;
    object-fit: cover;
    border-radius: 4px;
}

.seat-info {
    padding: 20px 0;
}

.seat-total {
    display: flex;
    align-items: baseline;
    gap: 8px;
    margin-bottom: 40px;
}

.seat-number {
    font-family: var(--font-serif);
    font-size: 72px;
    font-weight: 300;
    line-height: 1;
    color: var(--color-gold);
}

.seat-unit {
    font-family: var(--font-serif);
    font-size: 24px;
    color: var(--color-text-main);
}

.seat-details {
    margin-bottom: 32px;
}

.seat-item {
    display: flex;
    justify-content: space-between;
    padding: 12px 0;
    border-bottom: 1px solid var(--color-bg-accent);
}

.seat-type {
    font-size: 15px;
    color: var(--color-text-sub);
}

.seat-count {
    font-size: 15px;
    color: var(--color-text-main);
}

.seat-description {
    font-size: 14px;
    line-height: 2;
    color: var(--color-text-muted);
    margin-bottom: 24px;
}

.seat-tags {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.seat-tag {
    padding: 6px 16px;
    background: var(--color-bg-accent);
    font-size: 12px;
    color: var(--color-text-sub);
    border-radius: 2px;
}

/* ====================================
   ACCESS Section
   ==================================== */
.access {
    background-color: var(--color-bg-dark);
}

.access-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.info-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px 60px;
}

.info-item {
    padding-bottom: 20px;
    border-bottom: 1px solid var(--color-bg-accent);
}

.info-label {
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 0.15em;
    color: var(--color-gold);
    margin-bottom: 12px;
}

.info-text {
    font-size: 14px;
    line-height: 2;
    color: var(--color-text-main);
}

.info-sub {
    font-size: 13px;
    color: var(--color-text-muted);
}

.info-note {
    display: block;
    font-size: 12px;
    color: var(--color-gold);
    margin-top: 8px;
}

.tel-link {
    font-size: 18px;
    font-weight: 500;
    letter-spacing: 0.05em;
}

.tel-link:hover {
    color: var(--color-gold);
}

.payment-info {
    margin-top: 40px;
    padding-top: 40px;
    border-top: 1px solid var(--color-bg-accent);
}

.payment-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.payment-item {
    font-size: 13px;
    color: var(--color-text-sub);
    padding-left: 16px;
    position: relative;
}

.payment-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 10px;
    width: 4px;
    height: 4px;
    background: var(--color-gold);
    border-radius: 50%;
}

.map-wrapper {
    width: 100%;
    border-radius: 4px;
    overflow: hidden;
}

.google-map {
    width: 100%;
    height: 400px;
    border: none;
    filter: grayscale(0.3) contrast(1.1);
}

/* ====================================
   RESERVATION Section
   ==================================== */
.reservation {
    background-color: var(--color-bg-main);
    padding: 100px 0;
}

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

.reservation-text {
    font-size: 15px;
    line-height: 2;
    margin-bottom: 50px;
    color: var(--color-text-sub);
}

.reservation-buttons {
    display: flex;
    flex-direction: column;
    gap: 16px;
    align-items: center;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 18px 48px;
    font-size: 15px;
    font-weight: 500;
    letter-spacing: 0.1em;
    text-align: center;
    border-radius: 2px;
    transition: all var(--transition-base);
    cursor: pointer;
    min-width: 300px;
}

.btn-tel {
    background: transparent;
    color: var(--color-text-main);
    border: 2px solid var(--color-gold);
    font-size: 20px;
}

.btn-tel:hover {
    background: var(--color-gold);
    color: var(--color-bg-dark);
}

.btn-primary {
    background: var(--color-gold);
    color: var(--color-bg-dark);
    border: 2px solid var(--color-gold);
}

.btn-primary:hover {
    background: var(--color-gold-light);
    border-color: var(--color-gold-light);
    color: var(--color-bg-dark);
}

.btn-secondary {
    background: transparent;
    color: var(--color-text-main);
    border: 1px solid var(--color-text-muted);
}

.btn-secondary:hover {
    background: var(--color-bg-accent);
    border-color: var(--color-text-main);
}

.btn-icon {
    font-size: 18px;
}

/* ====================================
   FOOTER
   ==================================== */
.footer {
    background-color: var(--color-bg-dark);
    color: var(--color-text-main);
    padding: 80px 0 40px;
    border-top: 1px solid var(--color-bg-accent);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 60px;
    gap: 60px;
}

.footer-brand {
    flex: 1;
}

.footer-title {
    font-family: var(--font-serif);
    font-size: 28px;
    font-weight: 400;
    letter-spacing: 0.15em;
    margin-bottom: 24px;
    color: var(--color-text-main);
}

.footer-address {
    font-size: 13px;
    line-height: 2;
    margin-bottom: 16px;
    color: var(--color-text-muted);
}

.footer-tel {
    font-size: 16px;
    font-weight: 500;
}

.footer-tel a {
    color: var(--color-text-main);
}

.footer-tel a:hover {
    color: var(--color-gold);
}

.footer-links {
    display: flex;
    gap: 80px;
}

.footer-nav-title,
.footer-sns-title {
    font-size: 13px;
    font-weight: 500;
    letter-spacing: 0.15em;
    margin-bottom: 20px;
    color: var(--color-gold);
}

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

.footer-nav-list li {
    margin-bottom: 12px;
}

.footer-nav-list a {
    font-size: 13px;
    color: var(--color-text-muted);
    transition: color var(--transition-fast);
}

.footer-nav-list a:hover {
    color: var(--color-gold);
}

.sns-list {
    list-style: none;
}

.sns-list li {
    margin-bottom: 12px;
}

.sns-link {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--color-text-muted);
    transition: color var(--transition-fast);
}

.sns-link:hover {
    color: var(--color-gold);
}

.sns-icon {
    font-size: 16px;
}

.footer-bottom {
    padding-top: 40px;
    border-top: 1px solid var(--color-bg-accent);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

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

.gibier-badge {
    display: inline-block;
    padding: 10px 24px;
    background: rgba(212, 165, 116, 0.1);
    border: 1px solid var(--color-gold);
    font-size: 12px;
    letter-spacing: 0.1em;
    color: var(--color-gold);
    border-radius: 2px;
    transition: background var(--transition-fast);
}

.gibier-badge:hover {
    background: rgba(212, 165, 116, 0.2);
}

.footer-copyright {
    text-align: center;
    font-size: 12px;
    color: var(--color-text-muted);
}

/* ====================================
   Responsive Styles
   ==================================== */

/* Tablet */
@media screen and (max-width: 1024px) {
    .container {
        padding: 0 24px;
    }
    
    .section {
        padding: var(--section-padding-sp) 0;
    }

    .section-header {
        margin-bottom: 60px;
    }

    .section-title {
        font-size: 28px;
    }

    .concept-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .concept-image img {
        height: 400px;
    }

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

    .seat-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .seat-image img {
        height: 350px;
    }

    .seat-total {
        justify-content: center;
    }

    .seat-info {
        text-align: center;
    }

    .seat-tags {
        justify-content: center;
    }

    .access-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .info-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .footer-content {
        flex-direction: column;
        gap: 40px;
    }
}

/* Smartphone */
@media screen and (max-width: 768px) {
    :root {
        --header-height: var(--header-height-sp);
    }
    
    .container {
        padding: 0 16px;
    }

    /* Header Mobile */
    .header-inner {
        padding: 0 16px;
    }

    .header-logo {
        font-size: 18px;
    }

    .header-nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 300px;
        height: 100vh;
        background: var(--color-bg-main);
        padding: 100px 40px 40px;
        transition: right var(--transition-base);
        z-index: 999;
    }

    .header-nav.active {
        right: 0;
    }

    .nav-list {
        flex-direction: column;
        gap: 0;
    }

    .nav-link {
        display: block;
        padding: 20px 0;
        font-size: 14px;
        border-bottom: 1px solid var(--color-bg-accent);
    }

    .nav-link.reservation-link {
        margin-top: 20px;
        text-align: center;
        border-bottom: none;
    }

    .hamburger {
        display: flex;
    }

    /* Hero Mobile */
    .hero {
        min-height: 100vh;
    }

    .title-vertical {
        font-size: 40px;
    }

    .hero-subtitle {
        font-size: 12px;
    }

    .hero-copy {
        font-size: 14px;
    }

    /* Section Mobile */
    .section {
        padding: 60px 0;
    }

    .section-header {
        margin-bottom: 40px;
    }

    .section-title {
        font-size: 24px;
    }

    .section-label {
        font-size: 11px;
    }

    /* Concept Mobile */
    .concept-image img {
        height: 280px;
    }

    .concept-text {
        font-size: 14px;
    }

    .concept-text.lead {
        font-size: 16px;
    }

    /* Food Mobile */
    .food-gallery {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }

    .food-overlay {
        opacity: 1;
        transform: translateY(0);
        padding: 20px 12px 12px;
    }

    .food-name {
        font-size: 13px;
    }

    .food-tag {
        font-size: 10px;
        padding: 3px 8px;
    }

    /* Seat Mobile */
    .seat-image img {
        height: 280px;
    }

    .seat-number {
        font-size: 56px;
    }

    .seat-unit {
        font-size: 20px;
    }

    /* Access Mobile */
    .info-item {
        text-align: center;
    }

    .google-map {
        height: 300px;
    }

    .payment-info {
        text-align: left;
    }

    .payment-item {
        font-size: 12px;
    }

    /* Reservation Mobile */
    .reservation {
        padding: 60px 0;
    }

    .btn {
        width: 100%;
        min-width: auto;
        padding: 16px 24px;
        font-size: 14px;
    }

    .btn-tel {
        font-size: 18px;
    }

    /* Footer Mobile */
    .footer {
        padding: 60px 0 30px;
    }

    .footer-title {
        font-size: 22px;
    }

    .footer-links {
        flex-direction: column;
        gap: 40px;
        width: 100%;
    }

    .footer-nav,
    .footer-sns {
        width: 100%;
    }
}

/* PC only - hide sp-only elements */
@media screen and (min-width: 769px) {
    .sp-only {
        display: none;
    }
}

/* SP only - hide pc-only elements */
@media screen and (max-width: 768px) {
    .pc-only {
        display: none;
    }
}

/* Nav Overlay for Mobile */
.nav-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-base), visibility var(--transition-base);
    z-index: 998;
}

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