/* =========================================
   inu.mono — Custom Theme Styles
   Reference: maruni.com aesthetic
   ========================================= */

/* --- Custom Properties --- */
:root {
    /* Brand Colors */
    --color-brown: #a46742;
    --color-dark: #42424c;
    --color-grey: #c0c4c7;
    --color-green: #9ab480;
    --color-bg: #f8f5f0;
    --color-bg-alt: #f0ece5;
    --color-text: #32373c;
    --color-text-light: #7a7a7a;
    --color-border: #d8d4ce;
    --color-white: #ffffff;

    /* Typography */
    --font-mincho: 'Shippori Mincho', 'Yu Mincho', serif;
    --font-gothic: 'BIZ UDPGothic', 'Hiragino Kaku Gothic ProN', sans-serif;
    --font-serif-en: 'Cormorant Garamond', 'Georgia', serif;

    /* Spacing — generous, maruni-like */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 2rem;
    --space-lg: 4rem;
    --space-xl: 5rem;
    --space-2xl: 7rem;

    /* Layout */
    --max-width: 1200px;
    --header-height: 80px;
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-mincho);
    font-size: 17px;
    line-height: 2;
    color: var(--color-text);
    background-color: var(--color-bg);
    letter-spacing: 0.05em;
    overflow-x: hidden;
}

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

a {
    color: var(--color-text);
    text-decoration: none;
    transition: opacity 0.3s ease;
}

a:hover {
    opacity: 0.6;
}

ul {
    list-style: none;
}

address {
    font-style: normal;
}

/* --- Header / Navigation --- */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    background-color: rgba(248, 245, 240, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: transform 0.4s ease;
}

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

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

.site-logo {
    display: flex;
    align-items: center;
}

.logo-img {
    height: 36px;
    width: auto;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
}

.nav-links a {
    font-family: var(--font-serif-en);
    font-size: 15px;
    font-weight: 400;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--color-text);
}

.nav-instagram svg {
    display: block;
}

/* Mobile menu toggle */
.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    width: 28px;
    height: 20px;
    position: relative;
}

.nav-toggle span {
    display: block;
    width: 100%;
    height: 1px;
    background-color: var(--color-text);
    position: absolute;
    left: 0;
    transition: all 0.3s ease;
}

.nav-toggle span:first-child { top: 4px; }
.nav-toggle span:last-child { bottom: 4px; }

.nav-toggle[aria-expanded="true"] span:first-child {
    top: 50%;
    transform: rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:last-child {
    bottom: 50%;
    transform: rotate(-45deg);
}

/* --- Hero Section --- */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-xl) var(--space-md);
}

.hero-inner {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-lg);
}

.hero-logo-img {
    height: 180px;
    width: auto;
    margin: 0 auto;
}

.hero-tagline-ja {
    font-family: var(--font-mincho);
    font-size: 24px;
    font-weight: 400;
    letter-spacing: 0.2em;
    color: var(--color-text);
}

.hero-tagline-en {
    font-family: var(--font-serif-en);
    font-size: 17px;
    font-weight: 300;
    letter-spacing: 0.15em;
    color: var(--color-text-light);
    margin-top: var(--space-xs);
}

/* Scroll indicator */
.scroll-indicator {
    display: block;
    width: 1px;
    height: 60px;
    background: linear-gradient(to bottom, var(--color-text), transparent);
    animation: scrollDown 2s ease-in-out infinite;
}

@keyframes scrollDown {
    0% { opacity: 0; transform: translateY(-10px); }
    50% { opacity: 1; }
    100% { opacity: 0; transform: translateY(10px); }
}

/* --- Section Base --- */
.section {
    padding: var(--space-2xl) var(--space-md);
}

.section-inner {
    max-width: var(--max-width);
    margin: 0 auto;
}

.section-header {
    margin-bottom: var(--space-lg);
    text-align: center;
}

.section-label-en {
    font-family: var(--font-serif-en);
    font-size: 16px;
    font-weight: 400;
    letter-spacing: 0.25em;
    text-transform: uppercase;
    color: var(--color-text-light);
    display: inline-block;
    padding-bottom: var(--space-sm);
    border-bottom: 1px solid var(--color-border);
}

/* --- Concept Section --- */
.concept-content {
    display: flex;
    align-items: flex-start;
    gap: var(--space-xl);
    margin-bottom: var(--space-xl);
}

.concept-vertical {
    flex-shrink: 0;
}

.vertical-text {
    writing-mode: vertical-rl;
    text-orientation: mixed;
    font-family: var(--font-mincho);
    font-size: 24px;
    letter-spacing: 0.3em;
    line-height: 2.5;
    color: var(--color-brown);
    height: 380px;
}

.concept-body {
    max-width: 680px;
}

.concept-lead {
    font-family: var(--font-mincho);
    font-size: 22px;
    font-weight: 500;
    line-height: 2.4;
    letter-spacing: 0.08em;
    margin-bottom: var(--space-lg);
    color: var(--color-text);
}

.concept-text {
    font-family: var(--font-mincho);
    font-size: 17px;
    line-height: 2.2;
    letter-spacing: 0.05em;
    color: var(--color-text);
}

/* Concept images */
.concept-images {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-md);
    margin-top: var(--space-xl);
}

.concept-img-placeholder {
    aspect-ratio: 4 / 3;
    background-color: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-light);
    font-family: var(--font-serif-en);
    font-size: 13px;
    letter-spacing: 0.1em;
}

.concept-img {
    margin: 0;
    overflow: hidden;
    aspect-ratio: 4 / 3;
    background-color: var(--color-bg-alt);
}

.concept-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 1.2s ease;
}

.concept-img:hover img {
    transform: scale(1.03);
}

/* --- Landscape Break Section --- */
.section-landscape {
    margin: var(--space-2xl) 0;
    position: relative;
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 1s ease, transform 1s ease;
}

.section-landscape.is-visible {
    opacity: 1;
    transform: translateY(0);
}

.landscape-image {
    width: 100%;
    aspect-ratio: 21 / 9;
    overflow: hidden;
}

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

.landscape-caption {
    text-align: center;
    padding: var(--space-lg) var(--space-md) 0;
}

.landscape-text-ja {
    font-family: var(--font-mincho);
    font-size: 22px;
    letter-spacing: 0.2em;
    color: var(--color-text);
    margin-bottom: var(--space-xs);
}

.landscape-text-en {
    font-family: var(--font-serif-en);
    font-size: 15px;
    letter-spacing: 0.15em;
    font-style: italic;
    color: var(--color-text-light);
}

/* --- Products Section (Horizontal Scroll) --- */
.section-products-scroll {
    padding: var(--space-2xl) 0;
    overflow: hidden;
    position: relative;
}

.products-scroller {
    display: flex;
    align-items: center;
    gap: 100px;
    padding: 80px 0;
    overflow-x: auto;
    overflow-y: visible;
    scroll-snap-type: x mandatory;
    scroll-behavior: smooth;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
}

.products-scroller::-webkit-scrollbar {
    display: none;
}

.product-slide {
    flex-shrink: 0;
    scroll-snap-align: center;
    position: relative;
    transition: transform 0.5s ease, opacity 0.5s ease;
    opacity: 0.85;
}

.product-slide.is-active {
    transform: scale(1.02);
    opacity: 1;
}

.product-slide .slide-image {
    margin: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    background-color: var(--color-bg-alt);
}

.product-slide .slide-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.slide-logo {
    position: absolute;
    z-index: 2;
    pointer-events: none;
    height: auto;
}

.slide-meta {
    position: absolute;
    z-index: 2;
    font-family: var(--font-serif-en);
    font-size: 11px;
    letter-spacing: 0.3em;
    text-transform: lowercase;
    color: var(--color-text-light);
    pointer-events: none;
}

/* --- dining (hero / largest) --- */
.product-slide--dining {
    width: 62vw;
    max-width: 820px;
    aspect-ratio: 4 / 5;
}

.product-slide--dining .slide-logo {
    width: 36%;
    bottom: -6%;
    left: -4%;
    opacity: 0.95;
}

.product-slide--dining .slide-meta {
    bottom: -3%;
    left: 32%;
}

/* --- wear --- */
.product-slide--wear {
    width: 46vw;
    max-width: 620px;
    aspect-ratio: 3 / 4;
}

.product-slide--wear .slide-logo {
    width: 32%;
    top: -6%;
    right: -4%;
    opacity: 0.9;
}

.product-slide--wear .slide-meta {
    top: -2%;
    right: 30%;
}

/* --- snack --- */
.product-slide--snack {
    width: 40vw;
    max-width: 540px;
    aspect-ratio: 3 / 4;
}

.product-slide--snack .slide-logo {
    width: 28%;
    bottom: -4%;
    right: -3%;
    opacity: 0.9;
}

.product-slide--snack .slide-meta {
    bottom: -1%;
    right: 26%;
}

/* --- empty space slide --- */
.product-slide--space {
    width: 30vw;
    max-width: 400px;
    aspect-ratio: 4 / 5;
    background: transparent;
    pointer-events: none;
}

/* --- Instagram Section --- */
.instagram-feed {
    margin-bottom: var(--space-lg);
}

.instagram-placeholder {
    text-align: center;
    padding: var(--space-xl) var(--space-md);
    background-color: var(--color-white);
    border: 1px solid var(--color-border);
}

.instagram-placeholder p:first-child {
    font-family: var(--font-serif-en);
    font-size: 26px;
    letter-spacing: 0.1em;
    color: var(--color-text);
    margin-bottom: var(--space-xs);
}

.instagram-placeholder-sub {
    font-size: 15px;
    color: var(--color-text-light);
}

.instagram-cta {
    text-align: center;
}

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

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
    max-width: 960px;
    margin: 0 auto;
}

.contact-heading {
    font-family: var(--font-serif-en);
    font-size: 20px;
    font-weight: 400;
    letter-spacing: 0.1em;
    margin-bottom: var(--space-md);
    color: var(--color-text);
}

.contact-text {
    font-size: 16px;
    line-height: 2.2;
    margin-bottom: var(--space-lg);
    color: var(--color-text);
}

.contact-address {
    font-size: 16px;
    line-height: 2;
    margin-bottom: var(--space-md);
}

.contact-address-detail {
    font-size: 14px;
    color: var(--color-text-light);
}

.contact-map-placeholder {
    aspect-ratio: 16 / 9;
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-light);
    font-family: var(--font-serif-en);
    font-size: 13px;
    letter-spacing: 0.1em;
}

/* Google Maps embed */
.contact-map {
    aspect-ratio: 16 / 9;
    overflow: hidden;
}

.contact-map iframe {
    width: 100%;
    height: 100%;
    border: 0;
    display: block;
    filter: saturate(0.85);
}

/* Instagram embed container */
.instagram-embed {
    max-width: 100%;
    overflow: hidden;
}

.instagram-embed iframe,
.instagram-embed blockquote {
    max-width: 100%;
    margin: 0 auto !important;
}

/* --- Buttons --- */
.btn {
    display: inline-block;
    font-family: var(--font-serif-en);
    font-size: 16px;
    letter-spacing: 0.12em;
    padding: 16px 44px;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
}

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

.btn--primary:hover {
    opacity: 0.85;
    color: var(--color-white);
}

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

.btn--outline:hover {
    background-color: var(--color-text);
    color: var(--color-bg);
    opacity: 1;
}

/* --- Footer --- */
.site-footer {
    padding: var(--space-xl) var(--space-md);
    text-align: center;
    border-top: 1px solid var(--color-border);
}

.footer-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-md);
}

.footer-logo-img {
    height: 48px;
    width: auto;
}

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

.footer-copy {
    font-family: var(--font-serif-en);
    font-size: 13px;
    letter-spacing: 0.1em;
    color: var(--color-text-light);
}

/* --- Animations --- */

/* Fade in on load (Hero) */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 1.2s ease forwards;
}

.fade-in--delay {
    animation-delay: 0.6s;
}

.fade-in--delay-2 {
    animation-delay: 1.2s;
}

@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Reveal on scroll (sections) */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

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

/* --- Responsive --- */

/* Tablet */
@media (max-width: 960px) {
    :root {
        --space-xl: 6rem;
        --space-2xl: 8rem;
    }

    .concept-content {
        flex-direction: column;
        gap: var(--space-lg);
    }

    .vertical-text {
        height: auto;
        font-size: 18px;
    }

    .products-scroller {
        gap: 60px;
    }

    .contact-content {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }
}

/* Mobile */
@media (max-width: 640px) {
    :root {
        --space-xl: 4rem;
        --space-2xl: 6rem;
        --header-height: 64px;
    }

    body {
        font-size: 16px;
    }

    /* Navigation */
    .nav-links {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100vh;
        background-color: var(--color-bg);
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: var(--space-lg);
        z-index: 99;
    }

    .nav-links.is-open {
        display: flex;
    }

    .nav-links a {
        font-size: 16px;
    }

    .nav-toggle {
        display: block;
        z-index: 101;
    }

    /* Hero */
    .hero-logo-img {
        height: 120px;
    }

    .hero-tagline-ja {
        font-size: 19px;
        letter-spacing: 0.15em;
    }

    .hero-tagline-en {
        font-size: 14px;
    }

    /* Concept */
    .concept-content {
        flex-direction: column;
    }

    .vertical-text {
        writing-mode: horizontal-tb;
        text-orientation: initial;
        height: auto;
        font-size: 20px;
        letter-spacing: 0.15em;
        text-align: center;
    }

    .concept-lead {
        font-size: 19px;
    }

    .concept-images {
        grid-template-columns: 1fr;
    }

    /* Products scroller on mobile */
    .products-scroller {
        gap: 40px;
        padding: 60px 0;
    }

    .product-slide--dining {
        width: 88vw;
    }

    .product-slide--wear {
        width: 72vw;
    }

    .product-slide--snack {
        width: 66vw;
    }

    .product-slide--space {
        width: 40vw;
    }

    .slide-meta {
        font-size: 10px;
    }

    /* Landscape */
    .landscape-image {
        aspect-ratio: 16 / 9;
    }

    .landscape-text-ja {
        font-size: 18px;
        letter-spacing: 0.15em;
    }

    .landscape-text-en {
        font-size: 13px;
    }

    /* Section */
    .section-label-en {
        font-size: 14px;
    }
}