/* =============================================
   Variables & Reset
   ============================================= */

:root {
    --color-bg: #1a1a1a;
    --color-bg-alt: #222222;
    --color-bg-light: #2a2a2a;
    --color-accent: #c8a84e;
    --color-accent-hover: #d4b85e;
    --color-text: #ffffff;
    --color-text-muted: #999999;
    --color-border: #333333;
    --font-primary: 'Noto Sans JP', 'Hiragino Kaku Gothic ProN', 'Yu Gothic', sans-serif;
    --font-heading: 'Montserrat', sans-serif;
    --container-width: 1100px;
    --header-height: 80px;
}

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

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

body {
    font-family: var(--font-primary);
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.8;
    -webkit-font-smoothing: antialiased;
}

a {
    color: inherit;
    text-decoration: none;
}

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

ul, ol {
    list-style: none;
}

table {
    border-collapse: collapse;
    width: 100%;
}

iframe {
    display: block;
}

/* =============================================
   Layout
   ============================================= */

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 20px;
}

.section {
    padding: 100px 0;
}

.section--alt {
    background-color: var(--color-bg-alt);
}

.section__header {
    text-align: center;
    margin-bottom: 60px;
}

.section__title {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    color: var(--color-accent);
}

.section__title-ja {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    margin-top: 8px;
    letter-spacing: 0.1em;
}

.section__more {
    text-align: center;
    margin-top: 50px;
}

/* =============================================
   Header
   ============================================= */

.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    background-color: rgba(26, 26, 26, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid var(--color-border);
}

.site-header__inner {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 20px;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.site-header__logo {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    color: var(--color-accent);
}

.site-nav__list {
    display: flex;
    gap: 40px;
}

.site-nav__list li a {
    font-family: var(--font-heading);
    font-size: 0.8125rem;
    font-weight: 500;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-text);
    transition: color 0.3s ease;
    position: relative;
}

.site-nav__list li a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background-color: var(--color-accent);
    transition: width 0.3s ease;
}

.site-nav__list li a:hover {
    color: var(--color-accent);
}

.site-nav__list li a:hover::after {
    width: 100%;
}

/* Hamburger */
.hamburger {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 10px;
    z-index: 1001;
}

.hamburger__line {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--color-text);
    margin: 5px 0;
    transition: transform 0.3s ease, opacity 0.3s ease;
}

.hamburger.is-active .hamburger__line:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

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

.hamburger.is-active .hamburger__line:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* =============================================
   Hero
   ============================================= */

.hero {
    position: relative;
    height: 100vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 50%, #1a1a1a 100%);
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(ellipse at center, rgba(200, 168, 78, 0.08) 0%, transparent 70%);
}

.hero__content {
    position: relative;
    z-index: 2;
    padding: 0 20px;
}

.hero__subtitle {
    font-family: var(--font-heading);
    font-size: 0.875rem;
    letter-spacing: 0.4em;
    color: var(--color-accent);
    margin-bottom: 20px;
}

.hero__title {
    font-family: var(--font-heading);
    font-size: 3.5rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    margin-bottom: 20px;
    line-height: 1.3;
}

.hero__description {
    font-size: 1rem;
    color: var(--color-text-muted);
    letter-spacing: 0.05em;
}

/* Page Hero */
.page-hero {
    padding-top: calc(var(--header-height) + 80px);
    padding-bottom: 80px;
    text-align: center;
    background: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 100%);
    border-bottom: 1px solid var(--color-border);
}

.page-hero--small {
    padding-top: calc(var(--header-height) + 60px);
    padding-bottom: 60px;
}

.page-hero__title {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 600;
    letter-spacing: 0.2em;
    color: var(--color-accent);
}

.page-hero__subtitle {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    margin-top: 8px;
    letter-spacing: 0.1em;
}

/* =============================================
   Buttons
   ============================================= */

.btn {
    display: inline-block;
    font-family: var(--font-heading);
    font-size: 0.8125rem;
    font-weight: 600;
    letter-spacing: 0.2em;
    padding: 14px 40px;
    transition: all 0.3s ease;
}

.btn--primary {
    background-color: var(--color-accent);
    color: var(--color-bg);
}

.btn--primary:hover {
    background-color: var(--color-accent-hover);
}

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

.btn--outline:hover {
    background-color: var(--color-accent);
    color: var(--color-bg);
}

/* =============================================
   News List
   ============================================= */

.news-list__item {
    display: flex;
    align-items: baseline;
    gap: 30px;
    padding: 20px 0;
    border-bottom: 1px solid var(--color-border);
    transition: opacity 0.3s ease;
}

.news-list__item:first-child {
    border-top: 1px solid var(--color-border);
}

.news-list__item:hover {
    opacity: 0.7;
}

.news-list__date {
    font-family: var(--font-heading);
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    letter-spacing: 0.05em;
    flex-shrink: 0;
    min-width: 90px;
}

.news-list__title {
    font-size: 0.9375rem;
    line-height: 1.6;
}

/* =============================================
   Service Cards (Top page)
   ============================================= */

.service-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.service-card {
    text-align: center;
    padding: 50px 30px;
    border: 1px solid var(--color-border);
    transition: border-color 0.3s ease, transform 0.3s ease;
}

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

.service-card__icon {
    color: var(--color-accent);
    margin-bottom: 25px;
}

.service-card__title {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 15px;
    letter-spacing: 0.05em;
}

.service-card__text {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    line-height: 1.8;
}

/* =============================================
   About CTA (Top page)
   ============================================= */

.section--about-cta {
    background: linear-gradient(135deg, var(--color-bg-alt) 0%, var(--color-bg) 100%);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.about-cta {
    text-align: center;
    padding: 40px 0;
}

.about-cta__title {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 600;
    letter-spacing: 0.2em;
    color: var(--color-accent);
    margin-bottom: 25px;
}

.about-cta__text {
    font-size: 1rem;
    line-height: 2;
    color: var(--color-text-muted);
    margin-bottom: 40px;
}

/* =============================================
   Greeting (About page)
   ============================================= */

.greeting__text {
    max-width: 700px;
    margin: 0 auto;
    font-size: 0.9375rem;
    line-height: 2.2;
    color: var(--color-text-muted);
}

.greeting__text p {
    margin-bottom: 1.5em;
}

.greeting__name {
    text-align: right;
    color: var(--color-text);
    font-weight: 700;
    font-size: 1rem;
    margin-top: 30px;
}

/* =============================================
   Company Info Table (About page)
   ============================================= */

.info-table {
    max-width: 800px;
    margin: 0 auto;
}

.info-table tr {
    border-bottom: 1px solid var(--color-border);
}

.info-table th,
.info-table td {
    padding: 20px;
    font-size: 0.9375rem;
    vertical-align: top;
    text-align: left;
}

.info-table th {
    width: 160px;
    color: var(--color-accent);
    font-weight: 500;
    white-space: nowrap;
}

.info-table td {
    color: var(--color-text-muted);
    line-height: 1.8;
}

/* =============================================
   Access (About page)
   ============================================= */

.access__map {
    margin-bottom: 20px;
}

.access__map iframe {
    width: 100%;
    height: 400px;
}

.access__info {
    text-align: center;
    color: var(--color-text-muted);
    font-size: 0.9375rem;
    padding: 20px 0;
}

/* =============================================
   Service Detail (Services page)
   ============================================= */

.service-detail {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.service-detail--reverse {
    direction: rtl;
}

.service-detail--reverse > * {
    direction: ltr;
}

.service-detail__number {
    font-family: var(--font-heading);
    font-size: 3rem;
    font-weight: 700;
    color: var(--color-accent);
    opacity: 0.5;
    display: block;
    margin-bottom: 15px;
}

.service-detail__title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    letter-spacing: 0.05em;
}

.service-detail__text {
    font-size: 0.9375rem;
    color: var(--color-text-muted);
    line-height: 2;
}

.service-detail__image {
    width: 100%;
}

.service-detail__placeholder {
    width: 100%;
    aspect-ratio: 4/3;
    background: linear-gradient(135deg, var(--color-bg-light) 0%, var(--color-border) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-heading);
    font-size: 1.25rem;
    letter-spacing: 0.15em;
    color: var(--color-text-muted);
    text-align: center;
    line-height: 1.6;
}

/* =============================================
   Single Post
   ============================================= */

.single-post {
    max-width: 800px;
    margin: 0 auto;
    padding: 60px 0 100px;
}

.single-post__header {
    margin-bottom: 50px;
    padding-bottom: 30px;
    border-bottom: 1px solid var(--color-border);
}

.single-post__date {
    font-family: var(--font-heading);
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    letter-spacing: 0.05em;
}

.single-post__title {
    font-size: 1.75rem;
    font-weight: 700;
    margin-top: 15px;
    line-height: 1.5;
}

.single-post__content {
    font-size: 0.9375rem;
    line-height: 2;
    color: var(--color-text-muted);
}

.single-post__content p {
    margin-bottom: 1.5em;
}

.single-post__content h2 {
    font-size: 1.375rem;
    font-weight: 700;
    color: var(--color-text);
    margin: 2em 0 1em;
    padding-left: 15px;
    border-left: 3px solid var(--color-accent);
}

.single-post__content h3 {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--color-text);
    margin: 1.5em 0 0.8em;
}

.single-post__content img {
    margin: 2em 0;
}

.single-post__content a {
    color: var(--color-accent);
    border-bottom: 1px solid var(--color-accent);
}

.single-post__content a:hover {
    opacity: 0.7;
}

/* Post Navigation */
.post-navigation {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 60px;
    padding-top: 30px;
    border-top: 1px solid var(--color-border);
    font-size: 0.875rem;
}

.post-navigation a {
    color: var(--color-text-muted);
    transition: color 0.3s ease;
}

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

.post-navigation__back a {
    font-family: var(--font-heading);
    font-weight: 600;
    letter-spacing: 0.1em;
    color: var(--color-accent);
}

/* =============================================
   News Archive
   ============================================= */

.news-archive {
    max-width: 800px;
    margin: 0 auto;
    padding: 60px 0 100px;
}

.no-posts {
    text-align: center;
    color: var(--color-text-muted);
    padding: 60px 0;
}

/* Pagination */
.pagination {
    margin-top: 60px;
    text-align: center;
}

.pagination .nav-links {
    display: flex;
    justify-content: center;
    gap: 10px;
}

.pagination .page-numbers {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 10px;
    font-family: var(--font-heading);
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    border: 1px solid var(--color-border);
    transition: all 0.3s ease;
}

.pagination .page-numbers:hover,
.pagination .page-numbers.current {
    background-color: var(--color-accent);
    border-color: var(--color-accent);
    color: var(--color-bg);
}

/* =============================================
   Page Content
   ============================================= */

.page-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 60px 0 100px;
    font-size: 0.9375rem;
    line-height: 2;
    color: var(--color-text-muted);
}

.page-content p {
    margin-bottom: 1.5em;
}

/* =============================================
   404 Page
   ============================================= */

.error-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.error-page__title {
    font-family: var(--font-heading);
    font-size: 8rem;
    font-weight: 700;
    color: var(--color-accent);
    opacity: 0.5;
    line-height: 1;
}

.error-page__message {
    font-size: 1rem;
    color: var(--color-text-muted);
    margin: 20px 0 40px;
}

/* =============================================
   Footer
   ============================================= */

.site-footer {
    background-color: #111111;
    border-top: 1px solid var(--color-border);
}

.site-footer__inner {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 60px 20px;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.site-footer__name {
    font-family: var(--font-heading);
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--color-accent);
    margin-bottom: 15px;
    letter-spacing: 0.1em;
}

.site-footer__address,
.site-footer__tel {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    line-height: 1.8;
}

.site-footer__tel {
    margin-top: 8px;
}

.site-footer__menu {
    display: flex;
    gap: 30px;
}

.site-footer__menu li a {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    transition: color 0.3s ease;
    letter-spacing: 0.05em;
}

.site-footer__menu li a:hover {
    color: var(--color-accent);
}

.site-footer__copyright {
    border-top: 1px solid var(--color-border);
    padding: 20px;
    text-align: center;
}

.site-footer__copyright p {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    letter-spacing: 0.05em;
}

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

@media (max-width: 768px) {
    :root {
        --header-height: 60px;
    }

    .hamburger {
        display: block;
    }

    .site-nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 100%;
        height: 100vh;
        background-color: rgba(26, 26, 26, 0.98);
        display: flex;
        align-items: center;
        justify-content: center;
        transition: right 0.3s ease;
    }

    .site-nav.is-open {
        right: 0;
    }

    .site-nav__list {
        flex-direction: column;
        align-items: center;
        gap: 30px;
    }

    .site-nav__list li a {
        font-size: 1rem;
    }

    .hero {
        min-height: 500px;
    }

    .hero__title {
        font-size: 2rem;
    }

    .hero__subtitle {
        font-size: 0.75rem;
    }

    .section {
        padding: 70px 0;
    }

    .section__title {
        font-size: 2rem;
    }

    .section__header {
        margin-bottom: 40px;
    }

    .service-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .service-card {
        padding: 35px 25px;
    }

    .service-detail {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .service-detail--reverse {
        direction: ltr;
    }

    .service-detail__number {
        font-size: 2rem;
    }

    .service-detail__title {
        font-size: 1.25rem;
    }

    .info-table th {
        display: block;
        width: 100%;
        padding-bottom: 5px;
    }

    .info-table td {
        display: block;
        padding-top: 0;
        padding-bottom: 20px;
    }

    .page-hero__title {
        font-size: 1.75rem;
    }

    .about-cta__title {
        font-size: 1.75rem;
    }

    .about-cta__text br {
        display: none;
    }

    .site-footer__inner {
        flex-direction: column;
        gap: 30px;
    }

    .site-footer__menu {
        flex-direction: column;
        gap: 15px;
    }

    .news-list__item {
        flex-direction: column;
        gap: 5px;
    }

    .post-navigation {
        flex-direction: column;
        gap: 15px;
    }

    .single-post__title {
        font-size: 1.375rem;
    }
}

/* Body padding for fixed header */
body:not(.home) {
    padding-top: 0;
}

body.home {
    padding-top: 0;
}

.site-main {
    padding-top: 0;
}

body:not(.home) .site-main {
    padding-top: 0;
}