/*
 * tkn.jp 無料アプリ図鑑 — catalog theme
 * Design reference: tmp/DESIGN.md ("Reliable Nexus") + tmp/code.html
 */

:root {
    --surface: #f6fafe;
    --surface-dim: #d6dade;
    --surface-container-lowest: #ffffff;
    --surface-container-low: #f0f4f8;
    --surface-container: #eaeef2;
    --surface-container-high: #e4e9ed;
    --surface-container-highest: #dfe3e7;
    --surface-variant: #dfe3e7;

    --on-surface: #171c1f;
    --on-surface-variant: #424752;
    --outline: #737783;
    --outline-variant: #c2c6d4;

    --primary: #003c81;
    --primary-container: #0052ad;
    --on-primary: #ffffff;
    --on-primary-container: #b2caff;

    --secondary: #515f74;
    --secondary-container: #d5e3fc;
    --on-secondary: #ffffff;
    --on-secondary-container: #3a485b;

    --tertiary: #6e2700;
    --tertiary-container: #933803;
    --on-tertiary: #ffffff;
    --on-tertiary-container: #ffba9d;

    --error: #ba1a1a;
    --error-container: #ffdad6;
    --on-error: #ffffff;
    --on-error-container: #93000a;

    --success-container: #e2f4e5;
    --on-success-container: #1e6b31;

    --inverse-surface: #2c3134;
    --inverse-on-surface: #edf1f5;
    --inverse-primary: #acc7ff;

    --radius-sm: 0.25rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --radius-full: 999px;

    --gutter: 24px;
    --container-max: 1200px;

    --shadow-1: 0 4px 20px rgba(0, 0, 0, 0.05);
    --shadow-2: 0 8px 30px rgba(0, 0, 0, 0.1);
}

* { box-sizing: border-box; }

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

body {
    margin: 0;
    background: var(--surface-container-low);
    color: var(--on-surface);
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Hiragino Kaku Gothic ProN', 'Hiragino Sans', 'Noto Sans JP', 'Yu Gothic', Meiryo, sans-serif;
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    -webkit-font-smoothing: antialiased;
}

a { color: inherit; }
img { max-width: 100%; }

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

.material-symbols-outlined {
    font-variation-settings: 'FILL' 0, 'wght' 400, 'GRAD' 0, 'opsz' 24;
    line-height: 1;
    vertical-align: middle;
}

/* ==== header ==== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: var(--surface-container-lowest);
    border-bottom: 1px solid var(--surface-variant);
    box-shadow: var(--shadow-1);
}
.site-header-inner {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 16px var(--gutter);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}
.site-logo {
    font-size: 20px;
    font-weight: 800;
    color: var(--primary);
    text-decoration: none;
    letter-spacing: -0.01em;
}
.site-nav {
    display: flex;
    gap: 28px;
}
.site-nav a {
    color: var(--on-surface-variant);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: color 0.15s;
}
.site-nav a:hover, .site-nav a.active {
    color: var(--primary);
}
.nav-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--on-surface-variant);
    padding: 8px;
    cursor: pointer;
}

/* ==== hero ==== */
.hero {
    position: relative;
    overflow: hidden;
    background: var(--primary);
    margin: var(--gutter);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-1);
}
.hero-pattern {
    position: absolute;
    inset: 0;
    z-index: 0;
    background-image:
        linear-gradient(165deg, rgba(0, 82, 173, 0.68), rgba(0, 60, 129, 0.74)),
        url('../img/hero-pattern.webp');
    background-repeat: no-repeat, repeat;
    background-size: cover, 760px auto;
    pointer-events: none;
}
.hero-inner {
    position: relative;
    z-index: 2;
    padding: 72px var(--gutter) 84px;
    text-align: center;
}
.hero-title {
    margin: 0 0 20px;
    font-size: 40px;
    font-weight: 800;
    letter-spacing: -0.02em;
    line-height: 1.25;
    color: var(--on-primary);
}
.hero-lead {
    margin: 0 auto;
    max-width: 640px;
    font-size: 16px;
    line-height: 1.75;
    color: var(--on-primary-container);
}

/* ==== catalog categories ==== */
.category-chip {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: var(--surface-container);
    color: var(--on-surface);
    border-radius: var(--radius-md);
    padding: 12px 20px;
    margin: 48px 0 16px;
}
.category-chip:first-of-type {
    margin-top: 0;
}
.category-chip .material-symbols-outlined {
    color: var(--primary);
    font-size: 22px;
}
.category-chip h2 {
    margin: 0;
    font-size: 18px;
    font-weight: 700;
}

.subcategory-title {
    margin: 28px 0 12px;
    padding-left: 12px;
    border-left: 3px solid var(--outline-variant);
    font-size: 14px;
    font-weight: 700;
    color: var(--on-surface-variant);
    letter-spacing: 0.02em;
}
.category-chip + .subcategory-title {
    margin-top: 0;
}

.type-label {
    margin: 0 0 10px;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--outline);
}

.catalog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: var(--gutter);
}
.catalog-card {
    display: block;
    background: var(--surface-container-lowest);
    border: 1px solid var(--surface-variant);
    border-radius: var(--radius-lg);
    padding: 24px;
    text-decoration: none;
    color: inherit;
    box-shadow: var(--shadow-1);
    transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}
.catalog-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-2);
    border-color: var(--outline-variant);
}
.catalog-card-head {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 12px;
}
.catalog-card-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--primary);
}
.catalog-card-desc {
    margin: 0;
    font-size: 14px;
    color: var(--on-surface-variant);
    line-height: 1.7;
}

.platform-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: 14px;
}
.platform-badge {
    font-size: 11px;
    font-weight: 600;
    color: var(--on-surface-variant);
    background: var(--surface-container-high);
    border: 1px solid var(--outline-variant);
    border-radius: var(--radius-sm);
    padding: 2px 8px;
}
.platform-badge-web {
    color: var(--primary);
    background: var(--secondary-container);
    border-color: transparent;
    font-weight: 700;
}

.badge {
    flex-shrink: 0;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.04em;
    padding: 4px 12px;
    border-radius: var(--radius-full);
    white-space: nowrap;
    text-transform: uppercase;
}
.badge-free {
    background: var(--secondary-container);
    color: var(--on-secondary-container);
}
.badge-freetier {
    background: var(--tertiary-container);
    color: var(--on-tertiary-container);
}
.badge-paid {
    background: var(--error-container);
    color: var(--on-error-container);
}

.catalog-note-box {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    background: var(--surface-container);
    border-radius: var(--radius-lg);
    padding: 20px 24px;
    margin: 40px 0 56px;
    color: var(--on-surface-variant);
    text-align: center;
}
.catalog-note-box .material-symbols-outlined {
    color: var(--outline);
    flex-shrink: 0;
}
.catalog-note-box p {
    margin: 0;
    font-size: 14px;
    line-height: 1.7;
}

/* ==== article pages (about / apps / services etc.) ==== */
.article-prose {
    max-width: 760px;
    padding-top: 48px;
    padding-bottom: 64px;
}
.article-meta {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 16px;
}
.category-pill {
    display: inline-block;
    background: var(--surface-container);
    color: var(--on-surface-variant);
    font-size: 13px;
    font-weight: 600;
    padding: 5px 14px;
    border-radius: var(--radius-full);
}
.article-prose h1 {
    font-size: 32px;
    font-weight: 800;
    letter-spacing: -0.01em;
    color: var(--on-surface);
    margin: 0 0 24px;
}
.article-prose h2 {
    font-size: 22px;
    font-weight: 700;
    color: var(--on-surface);
    margin: 40px 0 16px;
}
.article-prose h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--on-surface);
    margin: 28px 0 12px;
}
.article-prose p {
    font-size: 15px;
    line-height: 1.8;
    color: var(--on-surface-variant);
    margin: 0 0 16px;
}
.article-prose ul, .article-prose ol {
    color: var(--on-surface-variant);
    font-size: 15px;
    line-height: 1.8;
    padding-left: 1.4em;
}
.article-prose li { margin-bottom: 6px; }
.article-prose a {
    color: var(--primary);
    text-decoration: underline;
    text-underline-offset: 2px;
}
.article-prose img {
    border-radius: var(--radius-lg);
    margin: 24px 0;
}

.catalog-cta {
    display: inline-block;
    background: var(--primary-container);
    color: var(--on-primary) !important;
    padding: 14px 28px;
    border-radius: var(--radius-md);
    text-decoration: none !important;
    font-weight: 700;
    font-size: 15px;
    margin: 8px 0 24px;
    box-shadow: 0 4px 0 rgba(0, 60, 129, 0.25);
    transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.catalog-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 14px rgba(0, 60, 129, 0.3);
}
.catalog-cta:active {
    transform: translateY(0);
    box-shadow: 0 2px 0 rgba(0, 60, 129, 0.25);
}

.article-spec {
    display: block;
    background: var(--surface-container-lowest);
    border: 1px solid var(--surface-variant);
    border-radius: var(--radius-lg);
    padding: 4px 20px;
    margin: 0 0 24px;
}
.article-spec > div {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    padding: 12px 0;
    border-bottom: 1px solid var(--surface-variant);
}
.article-spec > div:last-child { border-bottom: none; }
.article-spec dt {
    font-size: 13px;
    color: var(--on-surface-variant);
    font-weight: 500;
}
.article-spec dd {
    margin: 0;
    font-size: 13px;
    color: var(--on-surface);
    font-weight: 600;
    text-align: right;
}

.catalog-note {
    font-size: 13px;
    color: var(--on-surface-variant);
    background: var(--surface-container);
    border-radius: var(--radius-md);
    padding: 14px 18px;
    margin: 24px 0;
}

/* ==== footer ==== */
.site-footer {
    margin-top: auto;
    background: var(--inverse-surface);
    color: var(--inverse-on-surface);
}
.site-footer-inner {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 40px var(--gutter);
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}
.site-footer-brand p { margin: 0 0 6px; font-size: 13px; opacity: 0.75; }
.site-footer-logo {
    font-size: 20px !important;
    font-weight: 800;
    color: var(--inverse-primary);
    opacity: 1 !important;
    margin-bottom: 10px !important;
}
.site-footer-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 24px;
}
.site-footer-nav a {
    color: var(--inverse-on-surface);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    opacity: 0.85;
}
.site-footer-nav a:hover { opacity: 1; text-decoration: underline; }

/* ==== responsive ==== */
@media (max-width: 767px) {
    .site-nav {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--surface-container-lowest);
        border-bottom: 1px solid var(--surface-variant);
        flex-direction: column;
        gap: 0;
        padding: 8px 0;
        display: none;
    }
    .site-nav.open { display: flex; }
    .site-nav a { padding: 12px var(--gutter); }
    .nav-toggle { display: block; }

    .hero { margin: 16px; }
    .hero-inner { padding: 48px 20px 60px; }
    .hero-title { font-size: 28px; }

    .catalog-grid { grid-template-columns: 1fr; }
    .catalog-section-title { font-size: 22px; }
}

/* ==== compare table page ==== */
.compare-page {
    padding-top: 40px;
    padding-bottom: 64px;
}
.back-link {
    display: inline-block;
    margin-bottom: 20px;
    font-size: 14px;
    font-weight: 600;
    color: var(--primary);
    text-decoration: none;
}
.back-link:hover { text-decoration: underline; }
.compare-title {
    margin: 0 0 12px;
    font-size: 28px;
    font-weight: 800;
    color: var(--on-surface);
}
.compare-lead {
    margin: 0 0 28px;
    font-size: 15px;
    color: var(--on-surface-variant);
    line-height: 1.7;
    max-width: 760px;
}
.compare-table-scroll {
    overflow-x: auto;
    border: 1px solid var(--surface-variant);
    border-radius: var(--radius-lg);
    background: var(--surface-container-lowest);
    box-shadow: var(--shadow-1);
}
.compare-table {
    border-collapse: collapse;
    width: 100%;
    min-width: 640px;
    font-size: 13px;
}
.compare-table th, .compare-table td {
    padding: 12px 16px;
    text-align: left;
    white-space: nowrap;
    border-bottom: 1px solid var(--surface-variant);
}
.compare-table th {
    background: var(--surface-container);
    color: var(--on-surface-variant);
    font-weight: 700;
    position: sticky;
    top: 0;
}
.compare-table tbody tr:last-child td { border-bottom: none; }
.compare-table tbody tr:hover { background: var(--surface-container-low); }
.compare-service-name a {
    color: var(--primary);
    font-weight: 700;
    text-decoration: none;
}
.compare-service-name a:hover { text-decoration: underline; }
.compare-table .platform-badges { margin-top: 6px; }

.compare-link {
    margin-left: 12px;
    font-size: 13px;
    font-weight: 600;
    color: var(--primary);
    text-decoration: none;
    white-space: nowrap;
}
.compare-link:hover { text-decoration: underline; }