/*
Theme Name: Gift7 Ideas
Theme URI: https://example.com/gift7-ideas
Author: Gift7 Ideas Team
Author URI: https://example.com
Description: 大規模ギフトポータルサイト向けWordPressテーマ v1.1。SEO最適化（JSON-LD構造化データ7種・投稿別SEOメタ・サイトマップ拡張・Core Web Vitals対応）、アフィリエイトタグ一括置換、広告管理、13色カスタマイズ、ロゴ・背景・フォント自由変更機能を搭載。
Version: 1.1.0
Requires at least: 6.0
Tested up to: 6.7
Requires PHP: 7.0
License: GPL v2 or later
Text Domain: giftideas
Tags: gifts, affiliate, seo, responsive, custom-colors, custom-logo, customizer, e-commerce
*/

/* =========================================
   CSS変数（デザイントークン）
   ========================================= */
:root {
    --gi-primary:   #D4A574;
    --gi-secondary: #2E4057;
    --gi-accent:    #E76F51;
    --gi-bg:        #FAF8F3;
    --gi-text:      #2C2C2C;
    --gi-muted:     #8E8A82;
    --gi-border:    #E8E3D8;
    --gi-white:     #FFFFFF;
    --gi-dark:      #1A1A1A;
    --gi-header-bg: #FFFFFF;
    --gi-footer-bg: #1A1A1A;
    --gi-shadow-sm: 0 1px 3px rgba(0,0,0,.06);
    --gi-shadow-md: 0 4px 12px rgba(0,0,0,.08);
    --gi-shadow-lg: 0 16px 40px rgba(0,0,0,.12);
    --gi-radius:    12px;
    --gi-radius-sm: 6px;
    --gi-container: 1200px;
}

/* =========================================
   Reset & Base
   ========================================= */
*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
    margin: 0;
    font-family: var(--gi-font-body, 'Zen Kaku Gothic New', 'Noto Sans JP', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif);
    font-size: 16px;
    line-height: 1.7;
    color: var(--gi-text);
    background: var(--gi-bg);
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--gi-font-heading, 'Noto Serif JP', 'Playfair Display', serif);
    line-height: 1.3;
    margin: 0 0 .6em;
    color: var(--gi-dark);
}

a { color: var(--gi-secondary); text-decoration: none; transition: color .2s; }
a:hover { color: var(--gi-primary); }

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

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

.site-wrapper { min-height: 100vh; display: flex; flex-direction: column; }

main { flex: 1; }

/* =========================================
   Header
   ========================================= */
.gi-header {
    background: var(--gi-header-bg);
    border-bottom: 1px solid var(--gi-border);
    position: sticky;
    top: 0;
    z-index: 100;
    transition: box-shadow .2s;
}
.gi-header--scrolled { box-shadow: var(--gi-shadow-md); }

.gi-header-inner {
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: 24px;
    padding: 16px 0;
}

.gi-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--gi-dark);
}
.gi-logo-icon { font-size: 1.8rem; }
.gi-logo-text {
    font-family: 'Playfair Display', 'Noto Serif JP', serif;
    font-weight: 900;
    font-size: 1.5rem;
    letter-spacing: -.02em;
}
.gi-logo-text em { color: var(--gi-primary); font-style: normal; }

.gi-header-search { max-width: 500px; margin: 0 auto; width: 100%; }
.gi-header-search form {
    display: flex;
    background: var(--gi-bg);
    border: 1px solid var(--gi-border);
    border-radius: 50px;
    overflow: hidden;
}
.gi-header-search input {
    flex: 1;
    padding: 10px 20px;
    border: 0;
    background: transparent;
    outline: 0;
    font-size: 14px;
}
.gi-header-search button {
    padding: 0 20px;
    border: 0;
    background: var(--gi-primary);
    color: #fff;
    cursor: pointer;
    font-weight: 600;
}

.gi-nav { display: flex; align-items: center; gap: 20px; }
.gi-nav-list {
    display: flex;
    gap: 24px;
    list-style: none;
    margin: 0;
    padding: 0;
}
.gi-nav-list a {
    color: var(--gi-text);
    font-weight: 500;
    font-size: 14px;
    padding: 8px 0;
    position: relative;
}
.gi-nav-list a::after {
    content: '';
    position: absolute;
    left: 0; right: 0; bottom: 0;
    height: 2px;
    background: var(--gi-primary);
    transform: scaleX(0);
    transition: transform .2s;
}
.gi-nav-list a:hover::after { transform: scaleX(1); }

.gi-menu-toggle {
    display: none;
    background: none;
    border: 0;
    font-size: 1.5rem;
    cursor: pointer;
    padding: 8px;
}

/* =========================================
   Hero
   ========================================= */
.gi-hero {
    padding: 80px 0 100px;
    background: linear-gradient(135deg, #2E4057 0%, #1A2B3C 100%);
    color: #fff;
    text-align: center;
    position: relative;
    overflow: hidden;
}
.gi-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: radial-gradient(circle at 20% 50%, rgba(212,165,116,.15) 0%, transparent 50%),
                      radial-gradient(circle at 80% 30%, rgba(231,111,81,.1) 0%, transparent 50%);
}
.gi-hero-content { position: relative; z-index: 2; }
.gi-hero-eyebrow {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(212,165,116,.2);
    border: 1px solid rgba(212,165,116,.4);
    border-radius: 50px;
    font-size: 12px;
    letter-spacing: .15em;
    text-transform: uppercase;
    color: var(--gi-primary);
    margin-bottom: 24px;
}
.gi-hero-title {
    font-size: clamp(2rem, 5.5vw, 3.8rem);
    font-weight: 900;
    margin: 0 0 16px;
    line-height: 1.15;
    color: #fff;
    letter-spacing: -.02em;
}
.gi-hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.15rem);
    opacity: .85;
    max-width: 600px;
    margin: 0 auto 40px;
    font-weight: 400;
}
.gi-hero-search {
    max-width: 600px;
    margin: 0 auto;
    background: rgba(255,255,255,.12);
    padding: 8px;
    border-radius: 50px;
    backdrop-filter: blur(8px);
    display: flex;
    gap: 4px;
}
.gi-hero-search input {
    flex: 1;
    padding: 14px 24px;
    border: 0;
    border-radius: 50px;
    font-size: 15px;
    outline: 0;
}
.gi-hero-search button {
    padding: 14px 28px;
    background: var(--gi-primary);
    color: #fff;
    border: 0;
    border-radius: 50px;
    font-weight: 700;
    cursor: pointer;
}
.gi-hero-stats {
    display: flex;
    justify-content: center;
    gap: 48px;
    margin-top: 48px;
    flex-wrap: wrap;
}
.gi-hero-stats > div { text-align: center; }
.gi-hero-stats strong { display: block; font-size: 2rem; font-weight: 900; color: var(--gi-primary); }
.gi-hero-stats span { font-size: 12px; opacity: .7; letter-spacing: .1em; }

/* =========================================
   Sections
   ========================================= */
.gi-section { padding: 80px 0; }
.gi-section--gray { background: #fff; }
.gi-section-header {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    margin-bottom: 40px;
    flex-wrap: wrap;
    gap: 12px;
}
.gi-section-title {
    font-size: clamp(1.4rem, 3vw, 2rem);
    font-weight: 800;
    margin: 0;
}
.gi-section-lead {
    margin: 8px 0 0;
    color: var(--gi-muted);
    font-size: 14px;
}
.gi-section-link {
    color: var(--gi-primary);
    font-weight: 600;
    font-size: 14px;
}

/* =========================================
   Gift Card
   ========================================= */
.gi-gift-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.gi-gift-card {
    background: #fff;
    border-radius: var(--gi-radius);
    overflow: hidden;
    box-shadow: var(--gi-shadow-sm);
    transition: transform .25s, box-shadow .25s;
}
.gi-gift-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--gi-shadow-lg);
}
.gi-gift-card a { color: inherit; text-decoration: none; display: block; }
.gi-gift-img {
    position: relative;
    aspect-ratio: 4/3;
    background: var(--gi-border);
    overflow: hidden;
}
.gi-gift-img img {
    width: 100%; height: 100%;
    object-fit: cover;
    transition: transform .4s;
}
.gi-gift-card:hover .gi-gift-img img { transform: scale(1.05); }
.gi-gift-badge {
    position: absolute;
    top: 12px;
    left: 12px;
    background: var(--gi-accent);
    color: #fff;
    padding: 4px 12px;
    border-radius: 50px;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: .05em;
}
.gi-gift-body { padding: 16px; }
.gi-gift-category {
    font-size: 11px;
    color: var(--gi-primary);
    font-weight: 700;
    letter-spacing: .1em;
    text-transform: uppercase;
    margin-bottom: 6px;
}
.gi-gift-title {
    font-size: 15px;
    font-weight: 700;
    margin: 0 0 8px;
    line-height: 1.4;
    color: var(--gi-dark);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.gi-gift-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 12px;
}
.gi-gift-price {
    font-family: 'Playfair Display', serif;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--gi-secondary);
}
.gi-gift-rating { font-size: 13px; color: #F5A623; }

/* =========================================
   Occasion Grid
   ========================================= */
.gi-occasion-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 16px;
}
.gi-occasion-item {
    background: #fff;
    border-radius: var(--gi-radius);
    padding: 24px 12px;
    text-align: center;
    text-decoration: none;
    color: var(--gi-text);
    border: 2px solid transparent;
    transition: all .2s;
}
.gi-occasion-item:hover {
    border-color: var(--gi-primary);
    transform: translateY(-2px);
    box-shadow: var(--gi-shadow-md);
}
.gi-occasion-icon { font-size: 2rem; margin-bottom: 8px; }
.gi-occasion-name { font-size: 13px; font-weight: 600; }

/* =========================================
   Sidebar (Archive)
   ========================================= */
.gi-archive-layout {
    display: grid;
    grid-template-columns: 260px 1fr;
    gap: 32px;
    padding: 40px 0;
}
.gi-sidebar { display: flex; flex-direction: column; gap: 24px; }
.gi-sidebar-block {
    background: #fff;
    border-radius: var(--gi-radius);
    padding: 20px;
    box-shadow: var(--gi-shadow-sm);
}
.gi-sidebar-title {
    font-size: 14px;
    font-weight: 700;
    margin: 0 0 14px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--gi-border);
}
.gi-sidebar-list { list-style: none; padding: 0; margin: 0; }
.gi-sidebar-list li { border-bottom: 1px solid var(--gi-border); }
.gi-sidebar-list li:last-child { border: 0; }
.gi-sidebar-list a {
    display: flex;
    justify-content: space-between;
    padding: 10px 0;
    color: var(--gi-text);
    font-size: 14px;
}
.gi-sidebar-list a:hover,
.gi-sidebar-list a.active { color: var(--gi-primary); font-weight: 600; }
.gi-sidebar-list .count {
    color: var(--gi-muted);
    font-size: 12px;
    background: var(--gi-bg);
    padding: 2px 8px;
    border-radius: 10px;
}

/* =========================================
   Single Gift
   ========================================= */
.gi-single-gift { padding: 32px 0 60px; }
.gi-single-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    margin-bottom: 40px;
}
.gi-single-img { border-radius: var(--gi-radius); overflow: hidden; }
.gi-single-title {
    font-size: clamp(1.5rem, 3vw, 2.2rem);
    font-weight: 800;
    line-height: 1.25;
    margin: 8px 0 16px;
}
.gi-single-price {
    font-family: 'Playfair Display', serif;
    font-size: 2.4rem;
    font-weight: 800;
    color: var(--gi-primary);
    margin: 20px 0;
}
.gi-buy-btn {
    display: block;
    width: 100%;
    padding: 18px 32px;
    background: linear-gradient(135deg, var(--gi-primary) 0%, #B88859 100%);
    color: #fff;
    text-decoration: none;
    text-align: center;
    border-radius: var(--gi-radius-sm);
    font-size: 17px;
    font-weight: 700;
    transition: all .2s;
    box-shadow: 0 4px 16px rgba(212,165,116,.4);
}
.gi-buy-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 8px 24px rgba(212,165,116,.5);
    color: #fff;
    filter: brightness(1.05);
}
.gi-affiliate-disclaimer {
    font-size: 11px;
    color: var(--gi-muted);
    margin-top: 8px;
    text-align: center;
}
.gi-single-meta-list {
    border-top: 1px solid var(--gi-border);
    margin-top: 24px;
    padding-top: 20px;
}
.gi-meta-row {
    display: flex;
    padding: 10px 0;
    border-bottom: 1px solid var(--gi-border);
    font-size: 14px;
}
.gi-meta-row dt { font-weight: 600; min-width: 110px; color: var(--gi-muted); }
.gi-meta-row dd { margin: 0; }

/* =========================================
   Ad Zones
   ========================================= */
.gi-ad {
    margin: 24px 0;
    text-align: center;
}
.gi-ad-placeholder {
    padding: 20px;
    background: #f5f3ef;
    border: 1px dashed #d8d3c5;
    color: #a89f8c;
    font-size: 12px;
    border-radius: var(--gi-radius-sm);
}

/* =========================================
   Pagination
   ========================================= */
.gi-pagination {
    display: flex;
    justify-content: center;
    gap: 6px;
    margin: 40px 0;
    flex-wrap: wrap;
}
.gi-pagination a,
.gi-pagination span {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 12px;
    border-radius: var(--gi-radius-sm);
    background: #fff;
    border: 1px solid var(--gi-border);
    color: var(--gi-text);
    text-decoration: none;
    font-weight: 500;
    font-size: 14px;
}
.gi-pagination .current,
.gi-pagination a:hover {
    background: var(--gi-primary);
    color: #fff;
    border-color: var(--gi-primary);
}

/* =========================================
   Footer
   ========================================= */
.gi-footer {
    background: var(--gi-footer-bg);
    color: #9b9b9b;
    padding: 60px 0 20px;
    margin-top: 60px;
}
.gi-footer-cols {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}
.gi-footer h4 {
    color: #fff;
    font-size: 14px;
    font-weight: 700;
    margin: 0 0 16px;
    letter-spacing: .05em;
}
.gi-footer-brand p { max-width: 300px; font-size: 13px; line-height: 1.6; }
.gi-footer ul { list-style: none; padding: 0; margin: 0; }
.gi-footer li { margin-bottom: 8px; }
.gi-footer a { color: #9b9b9b; font-size: 13px; }
.gi-footer a:hover { color: var(--gi-primary); }
.gi-footer-bottom {
    border-top: 1px solid rgba(255,255,255,.08);
    padding-top: 20px;
    display: flex;
    justify-content: space-between;
    font-size: 12px;
    color: #666;
    flex-wrap: wrap;
    gap: 12px;
}
.gi-footer-disclaimer {
    background: rgba(255,255,255,.03);
    padding: 16px;
    border-radius: var(--gi-radius-sm);
    margin-bottom: 24px;
    font-size: 12px;
    color: #8a8a8a;
    line-height: 1.6;
}

/* =========================================
   Breadcrumb
   ========================================= */
.gi-breadcrumb {
    padding: 16px 0;
    font-size: 13px;
    color: var(--gi-muted);
}
.gi-breadcrumb a { color: var(--gi-muted); }
.gi-breadcrumb a:hover { color: var(--gi-primary); }
.gi-breadcrumb .sep { margin: 0 8px; opacity: .5; }

/* =========================================
   Archive Header
   ========================================= */
.gi-archive-header {
    padding: 48px 0 32px;
    background: #fff;
    border-bottom: 1px solid var(--gi-border);
}
.gi-archive-title {
    font-size: clamp(1.6rem, 3.5vw, 2.4rem);
    font-weight: 800;
    margin: 0 0 8px;
}
.gi-archive-count {
    color: var(--gi-muted);
    font-size: 14px;
}

/* =========================================
   Toolbar
   ========================================= */
.gi-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: #fff;
    padding: 14px 20px;
    border-radius: var(--gi-radius);
    margin-bottom: 24px;
    box-shadow: var(--gi-shadow-sm);
    flex-wrap: wrap;
    gap: 12px;
}
.gi-toolbar select {
    padding: 6px 12px;
    border: 1px solid var(--gi-border);
    border-radius: var(--gi-radius-sm);
    font-size: 13px;
    cursor: pointer;
}

/* =========================================
   Responsive
   ========================================= */
@media (max-width: 1024px) {
    .gi-gift-grid { grid-template-columns: repeat(3, 1fr); }
    .gi-occasion-grid { grid-template-columns: repeat(4, 1fr); }
    .gi-single-grid { grid-template-columns: 1fr; }
    .gi-archive-layout { grid-template-columns: 220px 1fr; }
    .gi-footer-cols { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
    .gi-gift-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
    .gi-occasion-grid { grid-template-columns: repeat(3, 1fr); }
    .gi-archive-layout { grid-template-columns: 1fr; }
    .gi-header-inner { grid-template-columns: auto 1fr auto; gap: 12px; }
    .gi-header-search { display: none; }
    .gi-nav-list { display: none; }
    .gi-menu-toggle { display: block; }
    .gi-hero { padding: 60px 0 80px; }
    .gi-section { padding: 56px 0; }
    .gi-hero-stats { gap: 24px; }
    .gi-footer-cols { grid-template-columns: 1fr; gap: 24px; }
}
@media (max-width: 480px) {
    .gi-gift-grid { grid-template-columns: 1fr; }
    .gi-occasion-grid { grid-template-columns: repeat(2, 1fr); }
}

/* =========================================
   Mobile Menu
   ========================================= */
.gi-mobile-menu {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,.5);
    z-index: 200;
}
.gi-mobile-menu.open { display: block; }
.gi-mobile-menu-inner {
    position: absolute;
    top: 0; right: 0;
    bottom: 0;
    width: 280px;
    background: #fff;
    padding: 24px;
    overflow-y: auto;
}
.gi-mobile-close {
    background: none;
    border: 0;
    font-size: 1.5rem;
    cursor: pointer;
    margin-bottom: 24px;
}
.gi-mobile-menu ul {
    list-style: none;
    padding: 0;
    margin: 0;
}
.gi-mobile-menu li {
    border-bottom: 1px solid var(--gi-border);
}
.gi-mobile-menu a {
    display: block;
    padding: 14px 0;
    color: var(--gi-text);
    font-weight: 500;
}

/* =========================================
   Utility
   ========================================= */
.gi-btn {
    display: inline-block;
    padding: 12px 28px;
    border-radius: var(--gi-radius-sm);
    font-weight: 600;
    text-decoration: none;
    transition: all .2s;
    border: 0;
    cursor: pointer;
    font-size: 14px;
}
.gi-btn--primary {
    background: var(--gi-primary);
    color: #fff;
}
.gi-btn--primary:hover {
    background: #B88859;
    color: #fff;
}
.gi-btn--outline {
    background: transparent;
    border: 1px solid var(--gi-border);
    color: var(--gi-text);
}
.gi-sr-only {
    position: absolute !important;
    width: 1px; height: 1px;
    padding: 0; margin: -1px;
    overflow: hidden;
    clip: rect(0,0,0,0);
    white-space: nowrap;
    border: 0;
}