/* style.css - Tack Blend Beach Design System */
@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+JP:wght@300;400;600&family=Zen+Kaku+Gothic+New:wght@300;400;500&display=swap');

:root {
    --c-navy: #0a2239;
    --c-sand: #e3dac9;
    --c-gold: #c5a059;
    --c-bg: #f9f8f6;
    --c-text: #2c3e50;
    --c-white: #ffffff;
    --c-gray: #8c9b9d;

    --f-serif: 'Noto Serif JP', serif;
    --f-sans: 'Zen Kaku Gothic New', sans-serif;

    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 2rem;
    --space-lg: 4rem;
    --space-xl: 8rem;

    --transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* Reset & Base */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; overflow-x: hidden; }
body {
    font-family: var(--f-sans);
    color: var(--c-text);
    background-color: var(--c-bg);
    line-height: 1.7;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--f-serif);
    font-weight: 400;
    line-height: 1.3;
    color: var(--c-navy);
}

a { color: inherit; text-decoration: none; transition: var(--transition); }
img { max-width: 100%; height: auto; display: block; }
ul { list-style: none; }

/* Typography */
.text-xs { font-size: 0.8rem; letter-spacing: 0.05em; }
.text-sm { font-size: 0.9rem; }
.text-lg { font-size: 1.2rem; }
.text-xl { font-size: 1.5rem; }
.heading-1 { font-size: clamp(2.5rem, 5vw, 5rem); letter-spacing: -0.02em; }
.heading-2 { font-size: clamp(2rem, 4vw, 3.5rem); }
.heading-3 { font-size: clamp(1.5rem, 3vw, 2.5rem); }
.serif { font-family: var(--f-serif); }
.sans { font-family: var(--f-sans); }
.tracking-wide { letter-spacing: 0.1em; }
.uppercase { text-transform: uppercase; }

/* Layout */
.container {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}
.container-sm { max-width: 800px; margin: 0 auto; padding: 0 20px; }
.section-padding { padding: var(--space-xl) 0; }
@media (max-width: 768px) {
    .section-padding { padding: var(--space-lg) 0; }
}

/* Header */
.site-header {
    position: fixed;
    top: 0; left: 0; width: 100%;
    background: rgba(249, 248, 246, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid rgba(10, 34, 57, 0.05);
    transition: var(--transition);
}
.site-header.scrolled { padding: 10px 0; box-shadow: 0 4px 20px rgba(0,0,0,0.03); }
.header-inner { display: flex; justify-content: space-between; align-items: center; padding: 15px 0; }
.logo { display: flex; align-items: center; gap: 10px; z-index: 1001; }
.logo img { height: 32px; }
.logo-text { font-family: var(--f-serif); font-size: 1.4rem; color: var(--c-navy); font-weight: 600; letter-spacing: 0.05em; }

.nav-links { display: flex; gap: 30px; }
.nav-links a { font-size: 0.9rem; font-weight: 500; text-transform: uppercase; letter-spacing: 0.1em; position: relative; }
.nav-links a::after { content: ''; position: absolute; bottom: -5px; left: 0; width: 0; height: 1px; background: var(--c-gold); transition: var(--transition); }
.nav-links a:hover::after { width: 100%; }

.header-actions { display: flex; align-items: center; gap: 20px; z-index: 1001; }
.cart-btn { position: relative; background: none; border: none; cursor: pointer; color: var(--c-navy); }
.cart-count { position: absolute; top: -8px; right: -8px; background: var(--c-gold); color: var(--c-white); font-size: 0.7rem; width: 18px; height: 18px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: 500; }

.menu-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 5px; }
.menu-toggle span { width: 25px; height: 1px; background: var(--c-navy); transition: var(--transition); }

/* Mobile Menu */
@media (max-width: 992px) {
    .nav-links {
        position: fixed; top: 0; left: 0; width: 100%; height: 100vh;
        background: var(--c-navy); flex-direction: column; align-items: center; justify-content: center;
        gap: 40px; transform: translateY(-100%); transition: transform 0.5s cubic-bezier(0.77,0.2,0.05,1); z-index: 1000;
    }
    .nav-links.active { transform: translateY(0); }
    .nav-links a { color: var(--c-white); font-size: 1.5rem; }
    .menu-toggle { display: flex; z-index: 1002; }
    .menu-toggle.active span:nth-child(1) { transform: translateY(6px) rotate(45deg); background: var(--c-white); }
    .menu-toggle.active span:nth-child(2) { opacity: 0; }
    .menu-toggle.active span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); background: var(--c-white); }
    .logo-text.active-menu { color: var(--c-white); }
    .cart-btn.active-menu { color: var(--c-white); }
}

/* Buttons */
.btn {
    display: inline-flex; align-items: center; justify-content: center;
    padding: 1rem 2.5rem; font-size: 0.9rem; font-weight: 500; text-transform: uppercase;
    letter-spacing: 0.1em; border: 1px solid var(--c-navy); cursor: pointer;
    transition: var(--transition); background: transparent; color: var(--c-navy);
}
.btn-primary { background: var(--c-navy); color: var(--c-white); }
.btn-primary:hover { background: var(--c-gold); border-color: var(--c-gold); }
.btn-outline:hover { background: var(--c-navy); color: var(--c-white); }

/* Components: Hero */
.hero {
    height: 100vh; min-height: 600px;
    display: flex; align-items: center; justify-content: center;
    position: relative; overflow: hidden;
    background-color: var(--c-navy);
}
.hero-img { position: absolute; top: 0; left: 0; width: 100%; height: 100%; object-fit: cover; opacity: 0.7; scale: 1.05; animation: slowZoom 20s infinite alternate; }
.hero-overlay { position: absolute; inset: 0; background: linear-gradient(to top, rgba(10,34,57,0.8), rgba(10,34,57,0.2)); }
.hero-content { position: relative; z-index: 10; text-align: center; color: var(--c-white); padding: 0 20px; max-width: 900px; }
.hero-subtitle { font-family: var(--f-sans); text-transform: uppercase; letter-spacing: 0.2em; font-size: 0.9rem; margin-bottom: 20px; display: block; color: var(--c-gold); }
.hero-title { margin-bottom: 30px; }

@keyframes slowZoom { from { transform: scale(1); } to { transform: scale(1.1); } }

/* Story Section */
.story-grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-xl); align-items: center; }
.story-text { padding-right: var(--space-lg); }
.story-image { position: relative; }
.story-image img { width: 100%; aspect-ratio: 4/5; object-fit: cover; }
.story-image::after { content: ''; position: absolute; bottom: -20px; right: -20px; width: 50%; height: 50%; border: 1px solid var(--c-gold); z-index: -1; }
@media (max-width: 992px) {
    .story-grid { grid-template-columns: 1fr; gap: var(--space-lg); }
    .story-text { padding-right: 0; text-align: center; }
    .story-image::after { display: none; }
}

/* Collections / Categories */
.collection-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 2px; background: var(--c-white); }
.collection-card { position: relative; aspect-ratio: 3/4; overflow: hidden; display: block; }
.collection-card img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.7s ease; }
.collection-card:hover img { transform: scale(1.05); }
.collection-card::before { content: ''; position: absolute; inset: 0; background: rgba(10,34,57,0.3); transition: var(--transition); z-index: 1; }
.collection-card:hover::before { background: rgba(10,34,57,0.5); }
.collection-content { position: absolute; bottom: 40px; left: 40px; z-index: 2; color: var(--c-white); }
.collection-content h3 { color: var(--c-white); margin-bottom: 10px; font-size: 2rem; }
.collection-link { font-size: 0.9rem; text-transform: uppercase; letter-spacing: 0.1em; display: flex; align-items: center; gap: 10px; }
.collection-link::after { content: '→'; transition: transform 0.3s; }
.collection-card:hover .collection-link::after { transform: translateX(5px); }

/* Editorial Block */
.editorial-section { background: var(--c-sand); padding: var(--space-xl) 0; }
.editorial-content { max-width: 800px; margin: 0 auto; text-align: center; }
.editorial-quote { font-family: var(--f-serif); font-size: 2rem; line-height: 1.5; color: var(--c-navy); margin-bottom: 30px; font-style: italic; }

/* Product Grid */
.product-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 40px 20px; }
.product-card { text-align: center; }
.product-img-wrap { position: relative; aspect-ratio: 3/4; overflow: hidden; margin-bottom: 20px; background: #eee; }
.product-img-wrap img { width: 100%; height: 100%; object-fit: cover; transition: opacity 0.4s; }
.product-img-wrap .img-hover { position: absolute; top: 0; left: 0; opacity: 0; }
.product-card:hover .product-img-wrap .img-primary { opacity: 0; }
.product-card:hover .product-img-wrap .img-hover { opacity: 1; }
.product-badge { position: absolute; top: 10px; left: 10px; background: var(--c-white); color: var(--c-navy); font-size: 0.7rem; padding: 4px 10px; text-transform: uppercase; letter-spacing: 0.1em; z-index: 2; }
.product-title { font-family: var(--f-serif); font-size: 1.2rem; margin-bottom: 5px; }
.product-price { font-family: var(--f-sans); color: var(--c-gray); }

/* Details Page */
.detail-layout { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-lg); margin-top: 100px; padding-bottom: var(--space-xl); }
.detail-gallery { display: grid; grid-template-columns: 1fr; gap: 10px; }
.detail-gallery img { width: 100%; aspect-ratio: 3/4; object-fit: cover; }
.detail-info { position: sticky; top: 120px; align-self: start; padding-right: 40px; }
.price-large { font-size: 1.5rem; color: var(--c-gold); margin: 20px 0; }
.detail-description { margin: 30px 0; color: #555; }
.size-selector { margin-bottom: 30px; }
.size-options { display: flex; gap: 10px; margin-top: 10px; }
.size-btn { width: 40px; height: 40px; border: 1px solid var(--c-gray); background: none; cursor: pointer; display: flex; align-items: center; justify-content: center; transition: var(--transition); }
.size-btn:hover, .size-btn.active { border-color: var(--c-navy); background: var(--c-navy); color: var(--c-white); }
.add-to-cart-wrap { display: flex; gap: 15px; margin-bottom: 40px; }
.add-to-cart-wrap .btn { flex: 1; }
.accordion { border-top: 1px solid #ddd; }
.accordion-item { border-bottom: 1px solid #ddd; }
.accordion-header { padding: 20px 0; cursor: pointer; display: flex; justify-content: space-between; font-family: var(--f-serif); font-size: 1.1rem; }
.accordion-content { max-height: 0; overflow: hidden; transition: max-height 0.3s ease; }
.accordion-content p { padding-bottom: 20px; color: #666; font-size: 0.9rem; }
@media (max-width: 768px) {
    .detail-layout { grid-template-columns: 1fr; margin-top: 80px; }
    .detail-info { position: static; padding: 20px 0; }
    .add-to-cart-wrap { position: fixed; bottom: 0; left: 0; width: 100%; padding: 15px; background: var(--c-white); box-shadow: 0 -5px 20px rgba(0,0,0,0.1); z-index: 100; margin: 0; gap: 10px; }
    .detail-layout { padding-bottom: 100px; } /* Space for sticky cart */
}

/* Footer */
.site-footer { background: var(--c-navy); color: var(--c-white); padding: var(--space-xl) 0 2rem; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 60px; }
.footer-brand h2 { color: var(--c-white); margin-bottom: 20px; font-size: 1.8rem; }
.footer-brand p { color: rgba(255,255,255,0.7); max-width: 300px; margin-bottom: 30px; }
.footer-heading { font-size: 0.9rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--c-gold); margin-bottom: 25px; }
.footer-links li { margin-bottom: 15px; }
.footer-links a { color: rgba(255,255,255,0.7); font-size: 0.9rem; }
.footer-links a:hover { color: var(--c-white); padding-left: 5px; }
.newsletter-form { display: flex; border-bottom: 1px solid rgba(255,255,255,0.3); padding-bottom: 5px; }
.newsletter-form input { background: none; border: none; color: var(--c-white); outline: none; flex: 1; padding: 5px 0; font-family: var(--f-sans); }
.newsletter-form input::placeholder { color: rgba(255,255,255,0.5); }
.newsletter-form button { background: none; border: none; color: var(--c-gold); cursor: pointer; text-transform: uppercase; font-size: 0.8rem; letter-spacing: 0.1em; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.1); padding-top: 2rem; display: flex; justify-content: space-between; align-items: center; font-size: 0.8rem; color: rgba(255,255,255,0.5); }
@media (max-width: 992px) {
    .footer-grid { grid-template-columns: 1fr; gap: 40px; }
    .footer-bottom { flex-direction: column; gap: 20px; text-align: center; }
}

/* Utilities & Animations */
.fade-in { opacity: 0; transform: translateY(20px); transition: opacity 0.8s ease, transform 0.8s ease; }
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* Cart Drawer */
.cart-drawer { position: fixed; top: 0; right: -100%; width: 100%; max-width: 450px; height: 100vh; background: var(--c-bg); z-index: 2000; transition: right 0.4s cubic-bezier(0.77,0.2,0.05,1); display: flex; flex-direction: column; box-shadow: -10px 0 30px rgba(0,0,0,0.1); }
.cart-drawer.open { right: 0; }
.cart-overlay { position: fixed; inset: 0; background: rgba(10,34,57,0.5); z-index: 1999; opacity: 0; pointer-events: none; transition: opacity 0.4s; backdrop-filter: blur(3px); }
.cart-overlay.open { opacity: 1; pointer-events: auto; }
.cart-header { padding: 30px; display: flex; justify-content: space-between; align-items: center; border-bottom: 1px solid rgba(0,0,0,0.05); }
.cart-header h3 { font-size: 1.5rem; margin: 0; }
.close-cart { background: none; border: none; font-size: 2rem; cursor: pointer; color: var(--c-navy); line-height: 1; }
.cart-body { flex: 1; overflow-y: auto; padding: 30px; }
.cart-item { display: flex; gap: 20px; margin-bottom: 30px; }
.cart-item img { width: 80px; height: 100px; object-fit: cover; }
.cart-item-info { flex: 1; }
.cart-item-title { font-family: var(--f-serif); margin-bottom: 5px; }
.cart-item-price { color: var(--c-gold); font-weight: 500; margin-bottom: 10px; }
.remove-item { font-size: 0.8rem; text-transform: uppercase; color: var(--c-gray); cursor: pointer; background: none; border: none; text-decoration: underline; }
.cart-footer { padding: 30px; background: var(--c-white); border-top: 1px solid rgba(0,0,0,0.05); }
.cart-total-row { display: flex; justify-content: space-between; font-family: var(--f-serif); font-size: 1.2rem; margin-bottom: 20px; }
.cart-footer .btn { width: 100%; }

/* Form Styles */
.form-group { margin-bottom: 25px; }
.form-label { display: block; margin-bottom: 8px; font-size: 0.9rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--c-navy); }
.form-control { width: 100%; padding: 15px; border: 1px solid #ccc; background: var(--c-white); font-family: var(--f-sans); font-size: 1rem; transition: border-color 0.3s; }
.form-control:focus { outline: none; border-color: var(--c-navy); }
textarea.form-control { resize: vertical; min-height: 150px; }

/* Page Header (Static Pages) */
.page-hero { padding: 150px 20px 80px; text-align: center; background: var(--c-white); }
.page-hero h1 { font-size: clamp(2.5rem, 5vw, 4rem); margin-bottom: 20px; }
.page-hero p { max-width: 600px; margin: 0 auto; color: var(--c-gray); }

.content-block { max-width: 800px; margin: 0 auto; padding: var(--space-lg) 20px; }
.content-block h2 { margin: 2rem 0 1rem; font-size: 1.8rem; }
.content-block p { margin-bottom: 1.5rem; }
.content-block ul { padding-left: 1.5rem; list-style: disc; margin-bottom: 1.5rem; }
.content-block li { margin-bottom: 0.5rem; }