@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;600&family=Lora:ital,wght@0,400;0,500;1,400&family=Playfair+Display:wght@700&display=swap');

/* ============================================================
   DESIGN SYSTEM — CSS Custom Properties
   ============================================================ */
:root {
    /* Colors */
    --color-bg:         #F7F2E9; /* 生成り色（ページ背景） */
    --color-text:       #2C2C2C; /* 墨色（本文テキスト） */
    --color-primary:    #C0392B; /* 朱色（CTA・強調） */
    --color-secondary:  #1A3A5C; /* 藍色（見出し・ブランド） */
    --color-subtle-bg:  #F0EDE8; /* 薄墨（カード背景・セクション背景） */
    --color-white:      #FFFFFF;
    --color-border:     #DDD8CF;
    --color-text-muted: #888888;

    /* Typography */
    --font-display: 'Playfair Display', Georgia, serif;  /* 見出し用 */
    --font-body:    'Lora', Georgia, serif;               /* 本文用 */
    --font-ui:      'Inter', -apple-system, sans-serif;  /* UI要素用 */

    /* Spacing Scale */
    --sp-xs:  4px;
    --sp-s:   8px;
    --sp-m:   16px;
    --sp-l:   24px;
    --sp-xl:  32px;
    --sp-2xl: 48px;
    --sp-3xl: 64px;
    --sp-4xl: 96px;

    /* Layout */
    --container-max:  1200px;
    --container-pad:  var(--sp-l);

    /* Effects */
    --radius:         6px;
    --shadow-sm:      0 2px 8px rgba(0,0,0,0.06);
    --shadow-md:      0 4px 16px rgba(0,0,0,0.10);
    --shadow-lg:      0 8px 32px rgba(0,0,0,0.14);
    --transition:     0.2s ease;
}

/* ============================================================
   RESET & BASE
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: var(--font-body);
    background-color: var(--color-bg);
    color: var(--color-text);
    font-size: 18px;
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}
h1, h2, h3, h4 { font-family: var(--font-display); color: var(--color-secondary); line-height: 1.2; }
a { color: var(--color-secondary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--color-primary); }
img { max-width: 100%; height: auto; display: block; }
ul { list-style: none; }
button { cursor: pointer; font-family: var(--font-ui); }

/* Accessibility: hide skip link until keyboard focus */
.skip-link {
    position: absolute;
    left: -9999px;
    top: auto;
    width: 1px;
    height: 1px;
    overflow: hidden;
}
.skip-link:focus,
.skip-link:focus-visible {
    left: var(--sp-m);
    top: var(--sp-m);
    width: auto;
    height: auto;
    z-index: 1001;
    padding: var(--sp-s) var(--sp-m);
    border-radius: var(--radius);
    background-color: var(--color-secondary);
    color: var(--color-white);
    font-family: var(--font-ui);
    font-size: 14px;
    text-decoration: none;
}

/* ============================================================
   UTILITY CLASSES
   ============================================================ */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-pad);
}
.section { padding: var(--sp-3xl) 0; }
.section__header { text-align: center; margin-bottom: var(--sp-xl); }
.section__title { font-size: clamp(28px, 4vw, 40px); }
.section__subtitle { font-family: var(--font-ui); font-size: 16px; color: var(--color-text-muted); margin-top: var(--sp-s); }

/* ============================================================
   SHARED COMPONENT: .article-card
   （複数のセクションで再利用されるカードコンポーネント）
   ============================================================ */
.article-card {
    display: block;
    background-color: var(--color-white);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition), box-shadow var(--transition);
    color: var(--color-text);
}
.article-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
    color: var(--color-text);
}
.article-card__image-wrapper {
    aspect-ratio: 4 / 3;
    overflow: hidden;
}
.article-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}
.article-card:hover img { transform: scale(1.03); }
.article-card__content { padding: var(--sp-l); }
.article-card__category {
    display: inline-block;
    font-family: var(--font-ui);
    font-size: 11px;
    font-weight: 600;
    color: var(--color-primary);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin-bottom: var(--sp-s);
}
.article-card__title {
    font-size: 20px;
    color: var(--color-secondary);
    margin-bottom: var(--sp-s);
    line-height: 1.3;
}
.article-card__excerpt {
    font-size: 15px;
    line-height: 1.6;
    color: var(--color-text-muted);
}

/* ============================================================
   SHARED COMPONENT: .search-form
   ============================================================ */
.search-form {
    display: flex;
    max-width: 500px;
    margin: 0 auto;
}
.search-form__input {
    flex-grow: 1;
    padding: var(--sp-m);
    border: 1px solid transparent;
    border-right: none;
    border-radius: var(--radius) 0 0 var(--radius);
    font-size: 16px;
    font-family: var(--font-ui);
    outline: none;
}
.search-form__input:focus { border-color: var(--color-secondary); }
.search-form__button {
    padding: 0 var(--sp-l);
    border: none;
    background-color: var(--color-primary);
    color: var(--color-white);
    border-radius: 0 var(--radius) var(--radius) 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--sp-s);
    font-size: 15px;
    font-weight: 600;
    transition: background-color var(--transition);
}
.search-form__button:hover { background-color: #a93226; }

/* ===== SECTION 1: SITE HEADER ===== */
.site-header {
    background-color: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 100;
}
.site-header__container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--sp-m);
    padding-bottom: var(--sp-m);
}
.site-header__logo {
    display: inline-flex;
    align-items: center;
    gap: 10px;
}
.site-header__logo-mark {
    width: 30px;
    height: 30px;
    object-fit: cover;
    border-radius: 50%;
    flex-shrink: 0;
}
.site-header__logo-name {
    font-family: var(--font-display);
    font-size: 22px;
    font-weight: 700;
    color: var(--color-secondary);
    line-height: 1.1;
}
.site-header__nav { display: none; } /* モバイルでは非表示 */
.site-header__nav-list { display: flex; gap: var(--sp-xl); }
.site-header__nav-link {
    font-family: var(--font-ui);
    font-size: 15px;
    font-weight: 600;
    color: var(--color-text);
    padding: var(--sp-s) 0;
    border-bottom: 2px solid transparent;
    transition: color var(--transition), border-color var(--transition);
}
.site-header__nav-link:hover {
    color: var(--color-primary);
    border-bottom-color: var(--color-primary);
}
.site-header__menu-toggle {
    background: none;
    border: none;
    color: var(--color-secondary);
    padding: var(--sp-s);
}

/* ===== SECTION 2: HERO ===== */
.hero {
    position: relative;
    height: 70vh;
    min-height: 500px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    overflow: hidden;
}
.hero__bg {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center center;
    z-index: 0;
}
.hero__bg::after {
    content: '';
    position: absolute;
    inset: 0;
    background-color: rgba(0, 0, 0, 0.45);
}
.hero__content {
    position: relative;
    z-index: 1;
    color: var(--color-white);
}
.hero__eyebrow {
    font-family: var(--font-ui);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
    opacity: 0.85;
    margin-bottom: var(--sp-m);
}
.hero__title {
    font-size: clamp(40px, 7vw, 72px);
    color: var(--color-white);
    margin-bottom: var(--sp-m);
    text-shadow: 0 2px 8px rgba(0,0,0,0.3);
}
.hero__subtitle {
    font-family: var(--font-ui);
    font-size: clamp(16px, 2vw, 20px);
    max-width: 580px;
    margin: 0 auto var(--sp-xl);
    opacity: 0.9;
    line-height: 1.6;
}
.hero__search { margin-top: var(--sp-xl); }

/* ===== SECTION 3: AFFILIATE DISCLOSURE ===== */
.affiliate-disclosure {
    background-color: var(--color-subtle-bg);
    border-bottom: 1px solid var(--color-border);
    padding: var(--sp-m) 0;
    text-align: center;
}
.affiliate-disclosure p {
    font-family: var(--font-ui);
    font-size: 13px;
    color: var(--color-text-muted);
    line-height: 1.5;
}
.affiliate-disclosure a {
    color: var(--color-primary);
    text-decoration: underline;
}

/* Responsible drinking note (article detail template) */
.responsible-drinking-note {
    background-color: var(--color-subtle-bg);
    border-top: 1px solid var(--color-border);
    min-height: 88px; /* Reserve space to reduce layout shifts */
    display: flex;
    align-items: center;
}
.responsible-drinking-note__inner {
    max-width: 860px;
    margin: 0 auto;
    padding: 14px var(--sp-l);
}
.responsible-drinking-note__line {
    font-family: var(--font-ui);
    font-size: 14px;
    line-height: 1.6;
    color: var(--color-text);
}

/* ===== SECTION 4: FEATURED ARTICLES ===== */
.featured-articles__grid {
    display: grid;
    grid-template-columns: 1fr; /* モバイル: 1列 */
    gap: var(--sp-xl);
}

/* ===== SECTION 5: CATEGORY NAV ===== */
.category-nav { background-color: var(--color-subtle-bg); }
.category-nav__grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr); /* モバイル: 2列 */
    gap: var(--sp-m);
}
.category-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: var(--sp-xl) var(--sp-l);
    background-color: var(--color-bg);
    border-radius: var(--radius);
    border: 1px solid var(--color-border);
    transition: background-color var(--transition), box-shadow var(--transition), transform var(--transition);
    gap: var(--sp-s);
}
.category-card:hover {
    background-color: var(--color-white);
    box-shadow: var(--shadow-md);
    transform: translateY(-3px);
    color: var(--color-text);
}
.category-card__icon {
    width: 52px;
    height: 52px;
    color: var(--color-secondary);
    margin-bottom: var(--sp-s);
}
.category-card__icon svg { width: 100%; height: 100%; }
.category-card__name {
    font-family: var(--font-ui);
    font-size: 16px;
    font-weight: 600;
    color: var(--color-secondary);
}
.category-card__desc {
    font-family: var(--font-ui);
    font-size: 13px;
    color: var(--color-text-muted);
    line-height: 1.4;
}

/* ===== SECTION 6: LATEST ARTICLES ===== */
.latest-articles__grid {
    display: grid;
    grid-template-columns: 1fr; /* モバイル: 1列 */
    gap: var(--sp-xl);
}
.latest-articles__footer {
    text-align: center;
    margin-top: var(--sp-2xl);
}

/* ===== SHARED COMPONENT: .btn ===== */
.btn {
    display: inline-block;
    padding: var(--sp-m) var(--sp-xl);
    border-radius: var(--radius);
    font-family: var(--font-ui);
    font-size: 15px;
    font-weight: 600;
    transition: all var(--transition);
}
.btn--outline {
    border: 2px solid var(--color-secondary);
    color: var(--color-secondary);
    background: transparent;
}
.btn--outline:hover {
    background-color: var(--color-secondary);
    color: var(--color-white);
}

/* ===== SECTION 7: RANKING WIDGET ===== */
.ranking-widget { background-color: var(--color-subtle-bg); }
.ranking-list { display: flex; flex-direction: column; gap: var(--sp-m); max-width: 800px; margin: 0 auto; }
.ranking-item {
    display: flex;
    align-items: center;
    gap: var(--sp-l);
    background-color: var(--color-white);
    border-radius: var(--radius);
    padding: var(--sp-m) var(--sp-l);
    box-shadow: var(--shadow-sm);
}
.ranking-item__rank {
    font-family: var(--font-display);
    font-size: 28px;
    font-weight: 700;
    color: var(--color-text-muted);
    min-width: 36px;
    text-align: center;
}
.ranking-item__rank--top { color: var(--color-primary); }
.ranking-item__thumb {
    width: 64px;
    height: 64px;
    border-radius: var(--radius);
    object-fit: cover;
    flex-shrink: 0;
}
.ranking-item__info { flex-grow: 1; }
.ranking-item__title {
    display: block;
    font-family: var(--font-ui);
    font-size: 16px;
    font-weight: 600;
    color: var(--color-secondary);
    margin-bottom: var(--sp-xs);
}
.ranking-item__category {
    font-family: var(--font-ui);
    font-size: 12px;
    color: var(--color-text-muted);
}
.ranking-item__cta { white-space: nowrap; }

.btn--primary {
    background-color: var(--color-primary);
    color: var(--color-white);
    border: 2px solid var(--color-primary);
}
.btn--primary:hover { background-color: #a93226; border-color: #a93226; color: var(--color-white); }

/* ===== SECTION 8: NEWSLETTER SIGNUP ===== */
.newsletter-signup { background-color: var(--color-secondary); }
.newsletter-signup__container { text-align: center; max-width: 600px; }
.newsletter-signup__eyebrow {
    font-family: var(--font-ui);
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: rgba(255,255,255,0.7);
    margin-bottom: var(--sp-m);
}
.newsletter-signup__title { color: var(--color-white); font-size: clamp(28px, 4vw, 40px); margin-bottom: var(--sp-m); }
.newsletter-signup__subtitle {
    font-family: var(--font-ui);
    font-size: 16px;
    color: rgba(255,255,255,0.85);
    margin-bottom: var(--sp-xl);
    line-height: 1.6;
}
.newsletter-signup__form { max-width: 480px; margin: 0 auto; }
.newsletter-signup__note {
    font-family: var(--font-ui);
    font-size: 12px;
    color: rgba(255,255,255,0.55);
    margin-top: var(--sp-m);
}

/* ===== SECTION 9: SITE FOOTER ===== */
.site-footer {
    background-color: var(--color-subtle-bg);
    padding-top: var(--sp-3xl);
    font-family: var(--font-ui);
    font-size: 14px;
    border-top: 1px solid var(--color-border);
}
.site-footer__main {
    display: grid;
    grid-template-columns: 1fr; /* モバイル: 1列 */
    gap: var(--sp-xl);
    padding-bottom: var(--sp-xl);
    border-bottom: 1px solid var(--color-border);
}
.footer-col__title {
    font-family: var(--font-ui);
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--color-secondary);
    margin-bottom: var(--sp-m);
}
.footer-col__desc {
    font-size: 14px;
    line-height: 1.6;
    color: var(--color-text-muted);
    margin-bottom: var(--sp-m);
}
.footer-col__links li { margin-bottom: var(--sp-s); }
.footer-col__links a { color: var(--color-text); font-size: 14px; }
.footer-col__links a:hover { color: var(--color-primary); }
.site-footer__bottom {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--sp-m);
    padding: var(--sp-l) 0;
}
.site-footer__copyright { color: var(--color-text-muted); font-size: 13px; }
.site-footer__socials { display: flex; gap: var(--sp-l); }
.site-footer__socials[hidden] { display: none !important; }
.social-icon { color: var(--color-text-muted); transition: color var(--transition); }
.social-icon:hover { color: var(--color-primary); }

/* Age gate modal */
.age-gate-overlay {
    position: fixed;
    inset: 0;
    z-index: 900;
    background-color: rgba(30, 26, 21, 0.64);
    display: grid;
    place-items: center;
    padding: var(--sp-l);
}
.age-gate-overlay[hidden] { display: none !important; }
.age-gate-modal {
    width: 100%;
    max-width: 480px;
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    padding: var(--sp-xl);
}
.age-gate-modal__title {
    font-size: 28px;
    margin-bottom: var(--sp-s);
}
.age-gate-modal__text {
    font-family: var(--font-ui);
    font-size: 15px;
    line-height: 1.6;
    color: var(--color-text);
}
.age-gate-modal__actions {
    margin-top: var(--sp-l);
    display: flex;
    gap: var(--sp-m);
    justify-content: flex-end;
}

/* ============================================================
   MOBILE SAFETY ADJUSTMENTS
   ============================================================ */
@media (max-width: 560px) {
    .container { padding: 0 var(--sp-m); }

    .search-form {
        flex-direction: column;
        max-width: 100%;
    }
    .search-form__input {
        border-right: 1px solid transparent;
        border-radius: var(--radius);
    }
    .search-form__button {
        margin-top: var(--sp-s);
        border-radius: var(--radius);
        padding: var(--sp-m);
    }

    .ranking-item {
        flex-wrap: wrap;
        gap: var(--sp-m);
        padding: var(--sp-m);
    }
    .ranking-item__info {
        min-width: 0;
        flex: 1 1 calc(100% - 120px);
    }
    .ranking-item__cta {
        width: 100%;
        text-align: center;
    }

    .age-gate-modal {
        padding: var(--sp-l);
    }
    .age-gate-modal__actions {
        flex-direction: column;
        justify-content: stretch;
    }
    .age-gate-modal__actions .btn {
        width: 100%;
        text-align: center;
    }
}

/* ============================================================
   RESPONSIVE — Tablet (769px and above)
   ============================================================ */
@media (min-width: 769px) {
    /* Header */
    .site-header__nav { display: block; }
    .site-header__menu-toggle { display: none; }

    /* Hero */
    .hero__title { font-size: 72px; }

    /* Featured Articles */
    .featured-articles__grid { grid-template-columns: repeat(3, 1fr); }

    /* Category Nav */
    .category-nav__grid { grid-template-columns: repeat(4, 1fr); }

    /* Latest Articles */
    .latest-articles__grid { grid-template-columns: repeat(2, 1fr); }

    /* Footer */
    .site-footer__main { grid-template-columns: 1.5fr 1fr 1fr; }
    .site-footer__bottom { flex-direction: row; justify-content: space-between; }
}

/* ============================================================
   RESPONSIVE — Desktop (1025px and above)
   ============================================================ */
@media (min-width: 1025px) {
    .site-header__logo-name { font-size: 26px; }
}

/* ============================================================
   JAVASCRIPT-DEPENDENT STYLES
   ============================================================ */

/* Mobile Nav Panel */
.mobile-nav-panel {
    position: fixed;
    top: 0;
    right: -100%;
    width: min(80vw, 320px);
    height: 100%;
    background-color: var(--color-white);
    box-shadow: var(--shadow-lg);
    z-index: 200;
    padding: var(--sp-xl);
    transition: right 0.3s ease-in-out;
    overflow-y: auto;
}
.mobile-nav-panel.is-open { right: 0; }
.mobile-nav-panel__close {
    background: none;
    border: none;
    color: var(--color-secondary);
    margin-bottom: var(--sp-xl);
    padding: var(--sp-s);
}
.mobile-nav-panel .site-header__nav-list {
    display: flex;
    flex-direction: column;
    gap: var(--sp-xl);
}
.mobile-nav-panel .site-header__nav-link { font-size: 20px; }

/* Overlay */
.mobile-nav-overlay {
    position: fixed;
    inset: 0;
    background-color: rgba(0,0,0,0.5);
    z-index: 150;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}
.mobile-nav-overlay.is-visible { opacity: 1; pointer-events: auto; }

/* Scrolled Header */
.site-header.is-scrolled { box-shadow: var(--shadow-sm); }