/**
 * KIHARU Site Main Styles
 * Version: 1.0.0
 */

/* ============================================
   Strong Reset - Override Theme Styles
   ============================================ */
html, body, div, span, applet, object, iframe,
h1, h2, h3, h4, h5, h6, p, blockquote, pre,
a, abbr, acronym, address, big, cite, code,
del, dfn, em, img, ins, kbd, q, s, samp,
small, strike, strong, sub, sup, tt, var,
b, u, i, center,
dl, dt, dd, ol, ul, li,
fieldset, form, label, legend,
table, caption, tbody, tfoot, thead, tr, th, td,
article, aside, canvas, details, embed,
figure, figcaption, footer, header, hgroup,
menu, nav, output, ruby, section, summary,
time, mark, audio, video {
    margin: 0 !important;
    padding: 0 !important;
    border: 0 !important;
    font-size: 100% !important;
    font: inherit !important;
    vertical-align: baseline !important;
}

/* ============================================
   Reset & Base Styles
   ============================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Colors */
    --color-primary: #000;
    --color-secondary: #5f6360;
    --color-accent: #116dff;
    --color-white: #fff;
    --color-bg-light: #eff1f2;
    --color-border: #2f2e2e;

    /* Fonts */
    --font-primary: 'メイリオ', 'Meiryo', 'ヒラギノ角ゴ Pro W3', 'Hiragino Kaku Gothic Pro', sans-serif;
    --font-secondary: 'Tsukushi Old Mincho', 'MS Mincho', 'ヒラギノ明朝 Pro W3', 'Hiragino Mincho Pro', serif;
    --font-latin: 'DIN Next W01 Light', 'Helvetica', 'Arial', sans-serif;

    /* Spacing */
    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 32px;
    --spacing-xl: 48px;
    --spacing-xxl: 64px;

    /* Layout */
    --max-width: 980px;
    --header-height: 105px;
}

body {
    font-family: var(--font-primary);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-primary);
    background-color: var(--color-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

a:hover {
    opacity: 0.7;
}

/* ============================================
   Layout Components
   ============================================ */
#kiharu-site-wrapper {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.section-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ============================================
   Header
   ============================================ */
.kiharu-header {
    background-color: var(--color-white);
    border-bottom: 1px solid var(--color-border);
    height: var(--header-height);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.site-branding .site-title {
    font-family: var(--font-latin);
    font-size: 24px;
    font-weight: 300;
    margin: 0;
}

.site-branding .site-title a {
    color: var(--color-primary);
}

/* Navigation */
.main-navigation .nav-menu {
    list-style: none;
    display: flex;
    gap: var(--spacing-md);
    margin: 0;
}

.main-navigation .nav-menu li a {
    font-size: 14px;
    padding: var(--spacing-xs) 0;
    display: block;
    white-space: nowrap;
}

/* ============================================
   Footer
   ============================================ */
.kiharu-footer {
    background-color: var(--color-white);
    border-top: 1px solid var(--color-border);
    margin-top: auto;
    padding: var(--spacing-xl) 0 var(--spacing-lg);
}

.footer-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    text-align: center;
}

.footer-links {
    margin-bottom: var(--spacing-md);
    font-size: 14px;
}

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

.footer-social {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.footer-social .social-link img {
    width: 28px;
    height: 28px;
}

.footer-copyright {
    font-size: 12px;
    color: var(--color-secondary);
}

/* ============================================
   Main Content
   ============================================ */
.site-main {
    flex: 1;
}

/* Page Header */
.page-header {
    padding: var(--spacing-xl) 0 var(--spacing-lg);
    text-align: center;
}

.page-title {
    font-size: 36px;
    font-weight: normal;
    margin-bottom: var(--spacing-sm);
}

.page-description {
    font-size: 16px;
    color: var(--color-secondary);
}

/* Section Styles */
section {
    padding: var(--spacing-xl) 0;
}

.section-heading {
    font-size: 28px;
    font-weight: normal;
    margin-bottom: var(--spacing-lg);
}

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

.letter-spacing {
    letter-spacing: 0.2em;
}

/* ============================================
   Home Page
   ============================================ */
.hero-section {
    padding: 0;
}

.hero-content {
    max-width: var(--max-width);
    margin: 0 auto;
}

.hero-image img {
    width: 100%;
    height: auto;
}

.brand-vision-section {
    padding: var(--spacing-xxl) 0;
}

.vision-text {
    font-family: var(--font-secondary);
    font-size: 15px;
    line-height: 3em;
}

.mission-section {
    padding: var(--spacing-xl) 0;
}

.mission-text {
    font-size: 18px;
    margin-top: var(--spacing-md);
}

.brand-name-section {
    padding: var(--spacing-xxl) 0;
}

.brand-text {
    font-size: 14px;
    margin-bottom: var(--spacing-sm);
}

.brand-name {
    font-family: var(--font-latin);
    font-size: 48px;
    font-weight: 300;
}

/* ============================================
   Brand Page
   ============================================ */
.brand-story-section {
    padding: var(--spacing-xl) 0;
}

.content-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
}

.brand-image {
    max-width: 100%;
}

.section-heading {
    margin-bottom: var(--spacing-md);
}

.description {
    margin-bottom: var(--spacing-sm);
    line-height: 1.8;
}

.meaning-list {
    list-style: none;
    margin: var(--spacing-md) 0;
    padding-left: var(--spacing-md);
}

.meaning-list li {
    margin-bottom: var(--spacing-xs);
}

/* ============================================
   Vegetable Detergent Page
   ============================================ */
.product-intro-section {
    padding: var(--spacing-xl) 0;
}

.product-features {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.feature-item {
    text-align: center;
    padding: var(--spacing-md);
    background: var(--color-bg-light);
    border-radius: 8px;
}

.feature-item h3 {
    font-size: 18px;
    margin-bottom: var(--spacing-sm);
}

.feature-item ul {
    list-style: none;
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.benefit-item {
    text-align: center;
}

.benefit-icon {
    margin-bottom: var(--spacing-md);
}

.benefit-icon img {
    width: 80px;
    height: 80px;
    margin: 0 auto;
}

/* Gallery */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.gallery-item {
    overflow: hidden;
    border-radius: 8px;
}

.gallery-item img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    transition: transform 0.3s ease;
}

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

/* How to Use */
.steps {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.step-item {
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-start;
}

.step-number {
    background: var(--color-primary);
    color: var(--color-white);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    flex-shrink: 0;
}

/* ============================================
   Online Sales Page
   ============================================ */
.transaction-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: var(--spacing-lg);
}

.transaction-table th,
.transaction-table td {
    padding: var(--spacing-sm);
    border: 1px solid var(--color-border);
    text-align: left;
}

.transaction-table th {
    background: var(--color-bg-light);
    font-weight: normal;
    width: 200px;
}

/* ============================================
   Basalt Fiber Page
   ============================================ */
.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.feature-box {
    background: var(--color-bg-light);
    padding: var(--spacing-md);
    border-radius: 8px;
    text-align: center;
}

.feature-box h3 {
    font-size: 16px;
    margin-bottom: var(--spacing-xs);
}

.applications-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.application-item {
    text-align: center;
}

.application-image {
    margin-bottom: var(--spacing-md);
    overflow: hidden;
    border-radius: 8px;
}

.application-image img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.advantages-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.advantage-item {
    background: var(--color-bg-light);
    padding: var(--spacing-md);
    border-radius: 8px;
}

.advantage-item h3 {
    margin-bottom: var(--spacing-sm);
}

.advantage-item ul {
    list-style: none;
    padding-left: 0;
}

.advantage-item li {
    padding: var(--spacing-xs) 0;
    border-bottom: 1px solid rgba(0,0,0,0.1);
}

.advantage-item li:last-child {
    border-bottom: none;
}

/* ============================================
   Products (Blog) Page
   ============================================ */
.products-list {
    margin-top: var(--spacing-lg);
}

.product-item {
    margin-bottom: var(--spacing-xl);
    border-bottom: 1px solid var(--color-bg-light);
    padding-bottom: var(--spacing-xl);
}

.product-item:last-child {
    border-bottom: none;
}

.product-item-inner {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: var(--spacing-lg);
}

.product-thumbnail {
    overflow: hidden;
    border-radius: 8px;
}

.product-thumbnail img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.product-thumbnail:hover img {
    transform: scale(1.05);
}

.product-title {
    font-size: 24px;
    font-weight: normal;
    margin-bottom: var(--spacing-sm);
}

.product-title a {
    color: var(--color-primary);
}

.product-meta {
    font-size: 14px;
    color: var(--color-secondary);
    margin-bottom: var(--spacing-md);
}

.product-meta span {
    margin-right: var(--spacing-md);
}

.product-excerpt {
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
}

.read-more-link {
    color: var(--color-accent);
    font-weight: 500;
}

/* Pagination */
.pagination {
    margin-top: var(--spacing-xl);
    text-align: center;
}

.pagination ul {
    list-style: none;
    display: inline-flex;
    gap: var(--spacing-xs);
}

.pagination li a,
.pagination li span {
    padding: var(--spacing-xs) var(--spacing-sm);
    border: 1px solid var(--color-border);
    border-radius: 4px;
    display: block;
}

.pagination li.current span {
    background: var(--color-primary);
    color: var(--color-white);
    border-color: var(--color-primary);
}

.no-posts-found {
    text-align: center;
    padding: var(--spacing-xxl);
    color: var(--color-secondary);
}

/* ============================================
   Contact Page
   ============================================ */
.contact-form-wrapper {
    max-width: 600px;
    margin: 0 auto;
}

.kiharu-contact-form .form-group {
    margin-bottom: var(--spacing-md);
}

.kiharu-contact-form input[type="text"],
.kiharu-contact-form input[type="email"],
.kiharu-contact-form input[type="tel"],
.kiharu-contact-form textarea {
    width: 100%;
    padding: var(--spacing-sm);
    border: 1px solid var(--color-border);
    border-radius: 4px;
    font-family: var(--font-primary);
    font-size: 16px;
}

.kiharu-contact-form textarea {
    resize: vertical;
    min-height: 150px;
}

.kiharu-contact-form .submit-btn {
    background: var(--color-primary);
    color: var(--color-white);
    border: none;
    padding: var(--spacing-sm) var(--spacing-xl);
    font-size: 16px;
    cursor: pointer;
    border-radius: 4px;
    transition: background 0.3s ease;
}

.kiharu-contact-form .submit-btn:hover {
    background: var(--color-secondary);
}

.kiharu-contact-form .submit-btn:disabled {
    background: #ccc;
    cursor: not-allowed;
}

.form-message {
    margin-top: var(--spacing-md);
}

.success-message {
    color: green;
    background: #d4edda;
    padding: var(--spacing-sm);
    border-radius: 4px;
}

.error-message {
    color: #721c24;
    background: #f8d7da;
    padding: var(--spacing-sm);
    border-radius: 4px;
}

.contact-info-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.info-box {
    background: var(--color-bg-light);
    padding: var(--spacing-md);
    border-radius: 8px;
    text-align: center;
}

.info-box h3 {
    margin-bottom: var(--spacing-sm);
    font-size: 18px;
}

.info-box p {
    font-size: 14px;
    line-height: 1.6;
}

/* ============================================
   Mobile Menu Toggle
   ============================================ */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    padding: var(--spacing-xs);
    cursor: pointer;
    position: absolute;
    right: var(--spacing-md);
    top: 50%;
    transform: translateY(-50%);
}

.mobile-menu-toggle .menu-icon {
    display: block;
    width: 25px;
    height: 2px;
    background: var(--color-primary);
    position: relative;
}

.mobile-menu-toggle .menu-icon::before,
.mobile-menu-toggle .menu-icon::after {
    content: '';
    display: block;
    width: 25px;
    height: 2px;
    background: var(--color-primary);
    position: absolute;
    left: 0;
    transition: transform 0.3s ease;
}

.mobile-menu-toggle .menu-icon::before {
    top: -8px;
}

.mobile-menu-toggle .menu-icon::after {
    top: 8px;
}

.mobile-menu-toggle.active .menu-icon {
    background: transparent;
}

.mobile-menu-toggle.active .menu-icon::before {
    transform: rotate(45deg);
    top: 0;
}

.mobile-menu-toggle.active .menu-icon::after {
    transform: rotate(-45deg);
    top: 0;
}

.main-navigation.mobile-hidden {
    display: none;
}

@media screen and (max-width: 767px) {
    .mobile-menu-toggle {
        display: block;
    }
}

/* ============================================
   Scroll to Top Button
   ============================================ */
.scroll-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--color-primary);
    color: var(--color-white);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease, background 0.3s ease;
    z-index: 999;
    font-size: 24px;
    line-height: 1;
    box-shadow: 0 2px 10px rgba(0,0,0,0.2);
}

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

.scroll-to-top:hover {
    background: var(--color-secondary);
}

/* ============================================
   Lightbox
   ============================================ */
.kiharu-lightbox {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 9999;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.kiharu-lightbox.active {
    opacity: 1;
    visibility: visible;
}

.lightbox-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    cursor: pointer;
}

.lightbox-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    max-width: 90%;
    max-height: 90%;
    z-index: 1;
}

.lightbox-content img {
    max-width: 100%;
    max-height: 90vh;
    display: block;
    margin: 0 auto;
}

.lightbox-close {
    position: absolute;
    top: -40px;
    right: 0;
    background: none;
    border: none;
    color: var(--color-white);
    font-size: 40px;
    cursor: pointer;
    line-height: 1;
    padding: 0;
    width: 40px;
    height: 40px;
    transition: opacity 0.3s ease;
}

.lightbox-close:hover {
    opacity: 0.7;
}

/* ============================================
   Form Validation Styles
   ============================================ */
.kiharu-contact-form input.error,
.kiharu-contact-form textarea.error {
    border-color: #dc3545;
}

.kiharu-contact-form .field-error {
    color: #dc3545;
    font-size: 14px;
    display: block;
    margin-top: 5px;
}

/* ============================================
   Image Loading States
   ============================================ */
img.loading {
    opacity: 0.5;
    animation: pulse 1.5s ease-in-out infinite;
}

img.loaded {
    opacity: 1;
    animation: fadeIn 0.3s ease-in;
}

@keyframes pulse {
    0%, 100% {
        opacity: 0.5;
    }
    50% {
        opacity: 0.3;
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

/* ============================================
   Gallery Hover Effects
   ============================================ */
.gallery-item {
    cursor: pointer;
}

.gallery-item::after {
    content: '🔍';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 32px;
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
}

.gallery-item {
    position: relative;
}

.gallery-item:hover::after {
    opacity: 0.8;
}