/**
 * よろずやツール - 共通CSS
 * Major visual overhaul with dark mode support
 */

/* ===== CSS Custom Properties ===== */
:root {
    --bg-primary: #f0f4f8;
    --bg-secondary: #ffffff;
    --bg-tertiary: #e2e8f0;
    --text-primary: #1a202c;
    --text-secondary: #4a5568;
    --text-muted: #718096;
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.12);
    --accent: #3b82f6;
    --accent-hover: #2563eb;
    --footer-bg: #1e293b;
    --footer-text: #cbd5e1;
    --footer-link: #94a3b8;
    /* Category colors */
    --cat-text: #3b82f6;
    --cat-developer: #10b981;
    --cat-seo: #f59e0b;
    --cat-calculator: #8b5cf6;
    --cat-maker: #ec4899;
    --cat-party: #ef4444;
}

[data-theme="dark"] {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --border-color: #334155;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.4);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.5);
    --footer-bg: #0f172a;
    --footer-text: #94a3b8;
    --footer-link: #64748b;
}

/* ===== Animations ===== */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(16px); }
    to { opacity: 1; transform: translateY(0); }
}

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

/* ===== Base ===== */
html {
    font-size: 16px;
    line-height: 1.6;
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Hiragino Sans", "Hiragino Kaku Gothic ProN", Meiryo, sans-serif;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    transition: background-color 0.3s, color 0.3s;
    animation: fadeIn 0.4s ease-out;
}

a {
    color: var(--accent);
    text-decoration: none;
    transition: color 0.2s;
}

a:hover {
    text-decoration: underline;
    color: var(--accent-hover);
}

/* ===== Container ===== */
.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 1rem;
    width: 100%;
}

/* ===== Header ===== */
.site-header {
    background: var(--bg-secondary);
    border-bottom: none;
    padding: 0.75rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-sm);
    transition: background-color 0.3s, box-shadow 0.3s;
}

.site-header::after {
    content: '';
    display: block;
    height: 3px;
    background: linear-gradient(90deg, #3b82f6, #10b981, #f59e0b, #8b5cf6, #ec4899, #ef4444);
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
}

.site-header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.site-logo {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--accent);
    text-decoration: none;
    text-shadow: 0 1px 2px rgba(59, 130, 246, 0.15);
    transition: opacity 0.2s, text-shadow 0.2s;
}

.site-logo:hover {
    text-decoration: none;
    opacity: 0.85;
    text-shadow: 0 2px 6px rgba(59, 130, 246, 0.25);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.site-nav {
    display: flex;
    gap: 1.25rem;
}

.site-nav a {
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    transition: color 0.2s;
    position: relative;
}

.site-nav a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--accent);
    border-radius: 1px;
    transform: scaleX(0);
    transition: transform 0.2s ease;
}

.site-nav a:hover {
    color: var(--accent);
    text-decoration: none;
}

.site-nav a:hover::after {
    transform: scaleX(1);
}

.site-nav a.active {
    color: var(--accent);
    font-weight: 700;
}

.site-nav a.active::after {
    transform: scaleX(1);
}

/* ===== Dark Mode Toggle ===== */
.theme-toggle, .theme-toggle-btn {
    background: none;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    cursor: pointer;
    padding: 0.375rem;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.125rem;
    color: var(--text-secondary);
    transition: background-color 0.2s, color 0.2s, border-color 0.2s;
}

.theme-toggle:hover, .theme-toggle-btn:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

/* ===== Language Switcher ===== */
.lang-switcher {
    display: inline-flex;
    gap: 2px;
    font-size: 0.75rem;
    margin: 0 0.25rem;
}
.lang-switcher a {
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    color: var(--text-muted);
    text-decoration: none;
    border: 1px solid var(--border-color);
    font-weight: 600;
}
.lang-switcher a.active {
    color: #fff;
    background: var(--accent);
    border-color: var(--accent);
}
.lang-switcher a:hover:not(.active) {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    text-decoration: none;
}

/* ===== Japanese Notice Banner (for EN locale) ===== */
.ja-notice {
    background: #fef3c7;
    border-left: 4px solid #f59e0b;
    padding: 0.75rem 1rem;
    margin-bottom: 1rem;
    border-radius: 4px;
    color: #78350f;
    font-size: 0.875rem;
}
[data-theme="dark"] .ja-notice {
    background: #451a03;
    color: #fcd34d;
}

/* ===== Hamburger Menu ===== */
.hamburger-btn {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.375rem;
    color: var(--text-secondary);
    font-size: 1.5rem;
    line-height: 1;
    transition: color 0.2s;
}

.hamburger-btn:hover {
    color: var(--text-primary);
}

/* ===== Breadcrumb ===== */
.breadcrumb {
    padding: 0.75rem 0;
    font-size: 0.8125rem;
    color: var(--text-muted);
}

.breadcrumb ol {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 0.25rem;
}

.breadcrumb li::after {
    content: '>';
    margin-left: 0.5rem;
    color: var(--text-muted);
    opacity: 0.5;
}

.breadcrumb li:last-child::after {
    content: '';
}

.breadcrumb a {
    color: var(--text-muted);
    transition: color 0.2s;
}

.breadcrumb a:hover {
    color: var(--accent);
    text-decoration: none;
}

/* ===== Main ===== */
main {
    flex: 1;
    padding: 1.5rem 0 3rem;
    animation: fadeInUp 0.5s ease-out;
}

/* ===== Hero (Top page) ===== */
.hero {
    text-align: center;
    padding: 3rem 2rem;
    margin: 0 -1rem 2rem;
    background: linear-gradient(135deg, #1e3a5f 0%, #3b82f6 50%, #8b5cf6 100%);
    border-radius: 16px;
    margin-left: 0;
    margin-right: 0;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 20% 80%, rgba(255,255,255,0.08) 0%, transparent 50%),
                radial-gradient(circle at 80% 20%, rgba(255,255,255,0.06) 0%, transparent 50%);
    pointer-events: none;
}

[data-theme="dark"] .hero {
    background: linear-gradient(135deg, #0f1d32 0%, #1e3a6e 50%, #4c2889 100%);
}

.hero h1 {
    font-size: 2.25rem;
    font-weight: 800;
    color: #ffffff;
    margin-bottom: 0.75rem;
    position: relative;
    text-shadow: 0 2px 4px rgba(0,0,0,0.15);
    letter-spacing: -0.025em;
}

.hero-desc {
    color: rgba(255, 255, 255, 0.85);
    font-size: 1.0625rem;
    line-height: 1.8;
    position: relative;
    max-width: 600px;
    margin: 0 auto;
}

/* ===== Tool Search Bar ===== */
.tool-search {
    max-width: 500px;
    margin: 1.5rem auto 0;
    position: relative;
}

.tool-search input {
    width: 100%;
    padding: 0.75rem 1rem 0.75rem 2.75rem;
    font-size: 1rem;
    border: none;
    border-radius: 50px;
    background: rgba(255, 255, 255, 0.95);
    color: #1a202c;
    box-shadow: 0 4px 16px rgba(0,0,0,0.12);
    transition: box-shadow 0.2s, background 0.2s;
    font-family: inherit;
}

.tool-search input::placeholder {
    color: #94a3b8;
}

.tool-search input:focus {
    outline: none;
    box-shadow: 0 4px 20px rgba(59, 130, 246, 0.25);
    background: #ffffff;
}

[data-theme="dark"] .tool-search input {
    background: rgba(30, 41, 59, 0.95);
    color: #f1f5f9;
}

[data-theme="dark"] .tool-search input:focus {
    background: #1e293b;
}

.tool-search::before {
    content: '\1F50D';
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1rem;
    z-index: 1;
    pointer-events: none;
}

.search-filters {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    justify-content: center;
    margin-top: 1rem;
}

.search-filter-btn {
    padding: 0.25rem 0.875rem;
    font-size: 0.8125rem;
    font-weight: 500;
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 50px;
    background: rgba(255, 255, 255, 0.12);
    color: rgba(255, 255, 255, 0.85);
    cursor: pointer;
    transition: all 0.2s;
}

.search-filter-btn:hover,
.search-filter-btn.active {
    background: rgba(255, 255, 255, 0.25);
    border-color: rgba(255, 255, 255, 0.5);
    color: #ffffff;
}

/* ===== Category Section ===== */
.category-section {
    margin-bottom: 2.5rem;
    animation: fadeInUp 0.5s ease-out both;
}

.category-section:nth-child(2) { animation-delay: 0.05s; }
.category-section:nth-child(3) { animation-delay: 0.1s; }
.category-section:nth-child(4) { animation-delay: 0.15s; }
.category-section:nth-child(5) { animation-delay: 0.2s; }
.category-section:nth-child(6) { animation-delay: 0.25s; }

.category-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
    padding: 0.5rem 0 0.5rem 1rem;
    border-bottom: none;
    border-left: 4px solid var(--accent);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: border-color 0.3s;
}

.category-title a {
    color: var(--text-primary);
    transition: color 0.2s;
}

.category-title a:hover {
    color: var(--accent);
    text-decoration: none;
}

.category-title .tool-count {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 1.5rem;
    height: 1.5rem;
    padding: 0 0.375rem;
    font-size: 0.6875rem;
    font-weight: 700;
    border-radius: 50px;
    background: var(--bg-tertiary);
    color: var(--text-muted);
    margin-left: 0.25rem;
}

/* Category color borders */
.category-section[data-cat="text"] .category-title { border-left-color: var(--cat-text); }
.category-section[data-cat="developer"] .category-title { border-left-color: var(--cat-developer); }
.category-section[data-cat="seo"] .category-title { border-left-color: var(--cat-seo); }
.category-section[data-cat="calculator"] .category-title { border-left-color: var(--cat-calculator); }
.category-section[data-cat="maker"] .category-title { border-left-color: var(--cat-maker); }
.category-section[data-cat="party"] .category-title { border-left-color: var(--cat-party); }

.category-desc {
    color: var(--text-muted);
    font-size: 0.875rem;
    margin-bottom: 1rem;
    padding-left: 1.25rem;
}

/* Category Page */
.category-page h1 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

/* ===== Tool Grid ===== */
.tool-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1rem;
}

.tool-card {
    display: block;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-left: 4px solid var(--accent);
    border-radius: 8px;
    padding: 1.25rem;
    transition: all 0.2s ease;
    text-decoration: none;
    color: inherit;
    position: relative;
    box-shadow: var(--shadow-sm);
}

.tool-card:hover {
    text-decoration: none;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* Tool card category colors */
.tool-card[data-cat="text"] { border-left-color: var(--cat-text); }
.tool-card[data-cat="developer"] { border-left-color: var(--cat-developer); }
.tool-card[data-cat="seo"] { border-left-color: var(--cat-seo); }
.tool-card[data-cat="calculator"] { border-left-color: var(--cat-calculator); }
.tool-card[data-cat="maker"] { border-left-color: var(--cat-maker); }
.tool-card[data-cat="party"] { border-left-color: var(--cat-party); }

/* Category badge on cards */
.tool-card .cat-badge {
    position: absolute;
    top: 0.75rem;
    right: 0.75rem;
    padding: 0.125rem 0.5rem;
    font-size: 0.6875rem;
    font-weight: 600;
    border-radius: 50px;
    color: #ffffff;
    background: var(--accent);
}

.tool-card[data-cat="text"] .cat-badge { background: var(--cat-text); }
.tool-card[data-cat="developer"] .cat-badge { background: var(--cat-developer); }
.tool-card[data-cat="seo"] .cat-badge { background: var(--cat-seo); }
.tool-card[data-cat="calculator"] .cat-badge { background: var(--cat-calculator); }
.tool-card[data-cat="maker"] .cat-badge { background: var(--cat-maker); }
.tool-card[data-cat="party"] .cat-badge { background: var(--cat-party); }

.tool-card h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.375rem;
    transition: color 0.2s;
}

.tool-card:hover h3 {
    color: var(--accent);
}

.tool-card p {
    font-size: 0.8125rem;
    color: var(--text-muted);
    line-height: 1.5;
}

/* ===== Favorite Button ===== */
.fav-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    background: none;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.875rem;
    color: var(--text-muted);
    transition: all 0.2s ease;
    vertical-align: middle;
    margin-left: 0.375rem;
}

.fav-btn:hover {
    border-color: #f59e0b;
    color: #f59e0b;
    background: rgba(245, 158, 11, 0.08);
}

.fav-btn.active {
    border-color: #f59e0b;
    color: #f59e0b;
    background: rgba(245, 158, 11, 0.1);
}

/* ===== Recent / Favorite Sections ===== */
.recent-tools,
.favorite-tools {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.25rem;
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow-sm);
    transition: background-color 0.3s, border-color 0.3s;
}

.recent-tools h2,
.favorite-tools h2 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
}

.tool-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tool-chip {
    display: inline-flex;
    align-items: center;
    padding: 0.3125rem 0.75rem;
    font-size: 0.8125rem;
    font-weight: 500;
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    border-radius: 50px;
    text-decoration: none;
    transition: all 0.2s;
    border: 1px solid transparent;
}

.tool-chip:hover {
    text-decoration: none;
    background: var(--accent);
    color: #ffffff;
    border-color: var(--accent);
}

/* ===== Footer ===== */
.site-footer {
    background: var(--footer-bg);
    border-top: none;
    padding: 2rem 0 1.5rem;
    text-align: center;
    color: var(--footer-text);
    font-size: 0.8125rem;
    margin-top: auto;
    transition: background-color 0.3s;
}

.site-footer .footer-links {
    margin-bottom: 0.75rem;
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0.25rem 1.5rem;
}

.site-footer .footer-links a {
    color: var(--footer-link);
    font-size: 0.8125rem;
    transition: color 0.2s;
}

.site-footer .footer-links a:hover {
    color: #ffffff;
    text-decoration: none;
}

.site-footer .footer-links-secondary {
    margin-top: 0.5rem;
    padding-top: 0.75rem;
    border-top: 1px solid rgba(255,255,255,0.1);
    font-size: 0.75rem;
}

.site-footer .footer-links-secondary a {
    font-size: 0.75rem;
    opacity: 0.8;
}

/* Skip to main content link */
.skip-link {
    position: absolute;
    top: -100px;
    left: 0;
    padding: 0.75rem 1.25rem;
    background: var(--accent);
    color: #fff !important;
    text-decoration: none;
    z-index: 9999;
    border-radius: 0 0 8px 0;
    font-weight: 600;
}
.skip-link:focus {
    top: 0;
    outline: 3px solid #fbbf24;
}

.site-footer small {
    color: var(--footer-link);
    opacity: 0.7;
}

/* ===== Scroll to top ===== */
.scroll-top-btn {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: var(--accent);
    color: #fff;
    border: none;
    cursor: pointer;
    font-size: 1.25rem;
    box-shadow: var(--shadow-md);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s, visibility 0.3s, transform 0.2s, background-color 0.2s;
    z-index: 50;
}

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

.scroll-top-btn:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
}

/* ===== Ad Container ===== */
.ad-container {
    margin: 2rem 0;
    text-align: center;
}

.ad-placeholder {
    background: var(--bg-tertiary);
    border: 2px dashed var(--border-color);
    border-radius: 8px;
    padding: 1.5rem;
    color: var(--text-muted);
    font-size: 0.875rem;
    transition: background-color 0.3s, border-color 0.3s;
}

/* ===== Utilities ===== */
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }
.text-center { text-align: center; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }

/* ===== Responsive ===== */
@media (max-width: 640px) {
    .hamburger-btn {
        display: block;
    }

    .site-nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--bg-secondary);
        flex-direction: column;
        padding: 0.75rem 1rem;
        border-bottom: 1px solid var(--border-color);
        box-shadow: var(--shadow-md);
        gap: 0;
        z-index: 99;
    }

    .site-nav.open {
        display: flex;
    }

    .site-nav a {
        padding: 0.75rem 0;
        border-bottom: 1px solid var(--border-color);
        font-size: 1rem;
    }

    .site-nav a::after {
        display: none;
    }

    .site-nav a:last-child {
        border-bottom: none;
    }

    .site-header .container {
        position: relative;
    }

    .hero {
        padding: 2rem 1.25rem;
        margin: 0 0 1.5rem;
        border-radius: 0 0 16px 16px;
    }

    .hero h1 {
        font-size: 1.5rem;
    }

    .hero-desc {
        font-size: 0.9375rem;
    }

    .tool-search {
        max-width: 100%;
    }

    .tool-search input {
        font-size: 0.9375rem;
    }

    .tool-grid {
        grid-template-columns: 1fr;
    }

    .category-title {
        font-size: 1.125rem;
    }

    .scroll-top-btn {
        bottom: 1rem;
        right: 1rem;
        width: 40px;
        height: 40px;
    }

    .site-footer .footer-links {
        flex-direction: column;
        gap: 0.5rem;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 1.5rem 1rem;
    }

    .hero h1 {
        font-size: 1.375rem;
    }

    .search-filters {
        gap: 0.375rem;
    }

    .search-filter-btn {
        font-size: 0.75rem;
        padding: 0.1875rem 0.625rem;
    }
}

/* ===========================================
   200link アンテナウィジェット ラッパー（タブ式）
   ウィジェット本体CSS（.caw-* / .mku-* 等）は
   widget.js が注入するため、ここでは触らない。
   =========================================== */
.antenna-section {
    margin: 3rem 0 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--color-border, #e5e7eb);
}

.antenna-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 0 0.5rem;
    color: var(--color-text, #1f2937);
}

.antenna-desc {
    font-size: 0.9rem;
    color: var(--color-text-muted, #6b7280);
    margin: 0 0 1.25rem;
}

.antenna-tabs {
    display: flex;
    flex-wrap: nowrap;
    gap: 0.5rem;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
    padding-bottom: 0.5rem;
    margin-bottom: 1rem;
    border-bottom: 1px solid var(--color-border, #e5e7eb);
}

.antenna-tab {
    flex: 0 0 auto;
    appearance: none;
    background: transparent;
    border: 1px solid var(--color-border, #d1d5db);
    border-radius: 999px;
    padding: 0.4rem 0.95rem;
    font-size: 0.85rem;
    color: var(--color-text, #374151);
    cursor: pointer;
    white-space: nowrap;
    transition: background 0.15s, color 0.15s, border-color 0.15s;
}

.antenna-tab:hover {
    background: var(--color-bg-alt, #f3f4f6);
}

.antenna-tab.is-active {
    background: var(--color-primary, #2563eb);
    color: #fff;
    border-color: var(--color-primary, #2563eb);
}

.antenna-panels {
    position: relative;
}

.antenna-panel {
    max-width: 720px;
    margin: 0 auto;
}

.antenna-panel[hidden] {
    display: none !important;
}

@media (max-width: 640px) {
    .antenna-tab {
        font-size: 0.78rem;
        padding: 0.35rem 0.75rem;
    }
    .antenna-title {
        font-size: 1.25rem;
    }
}