/*
 * Index Page — Modernized styles
 * Replaces ~990 lines of inline CSS from index.astro
 */

/* ========================================
   Page Body Override
   ======================================== */

body.index-page {
    background-color: var(--ds-bg, #F8FAFC);
    padding: 0;
    padding-top: var(--header-height);
}

[data-theme="dark"] body.index-page {
    background-color: var(--ds-bg, #0F172A);
}


/* ========================================
   Index Container Override
   ======================================== */

.index-container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    background-color: var(--ds-bg-card, #FFFFFF);
    border-radius: 0 0 16px 16px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
    overflow: hidden;
}

[data-theme="dark"] .index-container {
    background-color: var(--ds-bg-card);
    border: 1px solid var(--ds-border);
    border-top: none;
}


/* ========================================
   Content Area
   ======================================== */

.index-content {
    padding: 48px 40px;
}


/* ========================================
   Category Card Grid
   ======================================== */

.category-nav {
    background: var(--ds-bg-subtle, #F8FAFC);
    border-radius: var(--card-radius, 12px);
    padding: 32px;
    margin-bottom: 40px;
    border: 1px solid var(--ds-border, #E2E8F0);
}

.category-nav h3 {
    color: var(--ds-text, #111827);
    margin-bottom: 24px;
    font-size: 1.4em;
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.category-links {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 12px;
}

.category-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 18px;
    background-color: var(--ds-bg-card, #FFFFFF);
    border: 1px solid var(--ds-border, #E2E8F0);
    border-radius: 10px;
    text-decoration: none;
    color: var(--ds-text, #374151);
    font-weight: 500;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
}

.category-link:hover,
.category-link:focus {
    background: linear-gradient(135deg, var(--color-aws-orange, #dc7600) 0%, #c56a00 100%);
    color: #FFFFFF;
    border-color: var(--color-aws-orange, #dc7600);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(220, 118, 0, 0.25);
}

.category-link:focus {
    outline: 3px solid var(--color-aws-dark, #232F3E);
    outline-offset: 4px;
}

.category-link-icon {
    font-size: 1.4em;
    flex-shrink: 0;
}

.category-link-text {
    flex: 1;
}

.category-link-count {
    background-color: var(--ds-bg-inset, #F1F5F9);
    color: var(--ds-text-tertiary, #6B7280);
    padding: 3px 10px;
    border-radius: 10px;
    font-size: 0.8em;
    font-weight: 600;
}

.category-link:hover .category-link-count {
    background-color: rgba(255, 255, 255, 0.25);
    color: #FFFFFF;
}

[data-theme="dark"] .category-nav {
    background: var(--ds-bg-inset);
    border-color: var(--ds-border);
}

[data-theme="dark"] .category-link {
    background-color: var(--ds-bg-card);
    border-color: var(--ds-border);
    color: var(--ds-text);
}

[data-theme="dark"] .category-link-count {
    background-color: var(--ds-bg-inset);
    color: var(--ds-text-tertiary);
}


/* ========================================
   Search Section
   ======================================== */

.search-section {
    background: var(--ds-bg-subtle, #F8FAFC);
    border-radius: var(--card-radius, 12px);
    padding: 32px;
    margin-bottom: 40px;
    border: 1px solid var(--ds-border, #E2E8F0);
}

.search-section h3 {
    color: var(--ds-text, #111827);
    margin-bottom: 20px;
    font-size: 1.3em;
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.search-container {
    position: relative;
    max-width: 600px;
    margin: 0 auto;
}

.search-input {
    width: 100%;
    padding: 14px 50px 14px 20px;
    font-size: 1rem;
    border: 2px solid var(--ds-border, #E2E8F0);
    border-radius: 10px;
    background-color: var(--ds-bg-card, #FFFFFF);
    color: var(--ds-text, #111827);
    transition: all 0.2s ease;
    outline: none;
    font-family: inherit;
}

.search-input:focus {
    border-color: var(--color-aws-orange, #dc7600);
    box-shadow: 0 0 0 3px rgba(220, 118, 0, 0.1);
}

.search-input::placeholder {
    color: var(--ds-text-muted, #9CA3AF);
}

.search-clear {
    position: absolute;
    right: 14px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    font-size: 1.4em;
    color: var(--ds-text-muted, #9CA3AF);
    cursor: pointer;
    padding: 4px;
    display: none;
    transition: color 0.2s ease;
}

.search-clear:hover {
    color: var(--color-aws-orange, #dc7600);
}

.search-clear.show {
    display: block;
}

.search-results {
    margin-top: 20px;
    display: none;
}

.search-results.show {
    display: block;
}

.search-results-header {
    color: var(--ds-text, #374151);
    font-size: 1rem;
    margin-bottom: 12px;
    text-align: center;
}

.search-results-count {
    color: var(--color-aws-orange, #dc7600);
    font-weight: 600;
}

.search-results-list {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 10px;
    max-height: 500px;
    overflow-y: auto;
    padding: 16px;
    background-color: var(--ds-bg-card, #FFFFFF);
    border-radius: 10px;
    border: 1px solid var(--ds-border, #E2E8F0);
}

.search-result-item {
    background-color: var(--ds-bg-subtle, #F8FAFC);
    border: 1px solid var(--ds-border, #E2E8F0);
    border-radius: 8px;
    transition: all 0.2s ease;
}

.search-result-item:hover {
    background-color: #FFF8EE;
    border-color: var(--color-aws-orange, #dc7600);
    transform: translateX(3px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.search-result-item a {
    display: block;
    padding: 12px 15px;
    color: var(--ds-text, #374151);
    text-decoration: none;
    font-weight: 500;
}

.search-result-item a:hover {
    color: var(--color-aws-orange, #dc7600);
}

.search-result-category {
    display: inline-block;
    font-size: 0.75em;
    color: var(--ds-text-tertiary, #6B7280);
    background-color: var(--ds-bg-inset, #F1F5F9);
    padding: 2px 8px;
    border-radius: 4px;
    margin-top: 4px;
}

.search-no-results {
    text-align: center;
    padding: 40px 20px;
    color: var(--ds-text-tertiary, #6B7280);
    background-color: var(--ds-bg-card, #FFFFFF);
    border-radius: 10px;
    border: 1px solid var(--ds-border, #E2E8F0);
}

.search-no-results-icon {
    font-size: 3em;
    margin-bottom: 15px;
}

[data-theme="dark"] .search-section {
    background: var(--ds-bg-inset);
    border-color: var(--ds-border);
}

[data-theme="dark"] .search-input {
    background-color: var(--ds-bg-card);
    border-color: var(--ds-border);
    color: var(--ds-text);
}

[data-theme="dark"] .search-results-list {
    background-color: var(--ds-bg-card);
    border-color: var(--ds-border);
}

[data-theme="dark"] .search-result-item {
    background-color: var(--ds-bg-inset);
    border-color: var(--ds-border);
}

[data-theme="dark"] .search-result-item:hover {
    background-color: rgba(220, 118, 0, 0.08);
    border-color: var(--color-aws-orange);
}

[data-theme="dark"] .search-no-results {
    background-color: var(--ds-bg-card);
    border-color: var(--ds-border);
}


/* ========================================
   Hero Cards Section
   ======================================== */

.hero-cards-section {
    margin-bottom: 40px;
}

.hero-cards-section h3 {
    color: var(--ds-text, #111827);
    margin-bottom: 24px;
    font-size: 1.5em;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 12px;
}

.hero-cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 16px;
}

.hero-card {
    background: var(--ds-bg-card, #FFFFFF);
    border: 1px solid var(--ds-border, #E2E8F0);
    border-radius: var(--card-radius, 12px);
    padding: 28px;
    text-decoration: none;
    color: inherit;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--card-shadow, 0 1px 3px rgba(0, 0, 0, 0.04));
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    min-height: 220px;
}

.hero-card:hover,
.hero-card:focus {
    transform: translateY(-4px);
    box-shadow: var(--card-shadow-hover);
    border-color: var(--color-aws-orange, #dc7600);
}

.hero-card-highlight {
    border-color: var(--color-aws-orange, #dc7600);
    border-width: 2px;
}

.hero-card-icon {
    font-size: 2.8em;
    margin-bottom: 16px;
}

.hero-card-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.hero-card-title {
    color: var(--ds-text, #111827);
    font-size: 1.25em;
    margin-bottom: 10px;
    font-weight: 600;
}

.hero-card-desc {
    color: var(--ds-text-secondary, #4B5563);
    font-size: 0.9em;
    line-height: 1.6;
    margin-bottom: 14px;
}

.hero-card-badge {
    display: inline-block;
    background: var(--color-aws-orange, #dc7600);
    color: #FFFFFF;
    padding: 4px 14px;
    border-radius: 16px;
    font-size: 0.75em;
    font-weight: 600;
    margin-top: auto;
}

[data-theme="dark"] .hero-card {
    background: var(--ds-bg-card);
    border-color: var(--ds-border);
}

[data-theme="dark"] .hero-card:hover {
    border-color: var(--color-aws-orange);
}

[data-theme="dark"] .hero-card-title {
    color: var(--ds-text);
}

[data-theme="dark"] .hero-card-desc {
    color: var(--ds-text-secondary);
}


/* ========================================
   Info & Warning Sections
   ======================================== */

.info-section {
    background: var(--ds-bg-subtle, #F8FAFC);
    border-left: 4px solid var(--ds-accent, #2563EB);
    border-radius: var(--card-radius, 12px);
    padding: 28px;
    margin-bottom: 32px;
}

.info-section h3 {
    color: var(--ds-accent, #2563EB);
    font-size: 1.3em;
    font-weight: 600;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.info-section p {
    color: var(--ds-text-secondary, #4B5563);
    font-size: 1em;
    line-height: 1.7;
    margin-bottom: 10px;
}

.info-section ul {
    margin: 12px 0;
    padding-left: 24px;
    color: var(--ds-text-secondary, #4B5563);
}

.info-section li {
    margin-bottom: 6px;
    line-height: 1.6;
}

.warning-section {
    background: #FFFBEB;
    border-left: 4px solid var(--color-warning, #F59E0B);
    border-radius: var(--card-radius, 12px);
    padding: 28px;
    margin-bottom: 32px;
}

.warning-section h3 {
    color: #92400E;
    font-size: 1.3em;
    font-weight: 600;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.warning-section p {
    color: #78350F;
    font-size: 1em;
    line-height: 1.7;
    margin-bottom: 10px;
}

.warning-section strong {
    color: #92400E;
}

[data-theme="dark"] .info-section {
    background: rgba(37, 99, 235, 0.06);
    border-color: var(--ds-accent);
}

[data-theme="dark"] .info-section h3 {
    color: #60A5FA;
}

[data-theme="dark"] .info-section p,
[data-theme="dark"] .info-section li {
    color: var(--ds-text-secondary);
}

[data-theme="dark"] .warning-section {
    background: rgba(245, 158, 11, 0.06);
}

[data-theme="dark"] .warning-section h3 {
    color: #FBBF24;
}

[data-theme="dark"] .warning-section p {
    color: var(--ds-text-secondary);
}

[data-theme="dark"] .warning-section strong {
    color: #FBBF24;
}


/* ========================================
   Knowledge Base Nav Button
   ======================================== */

.kb-button {
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, #10B981 0%, #059669 100%);
    color: #FFFFFF;
    text-decoration: none;
    padding: 24px 28px;
    border-radius: var(--card-radius, 12px);
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.2);
    transition: all 0.2s ease;
}

.kb-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(16, 185, 129, 0.3);
    color: #FFFFFF;
}

.kb-icon {
    font-size: 2.5em;
    margin-right: 20px;
}

.kb-content { flex: 1; }

.kb-title {
    font-size: 1.35em;
    font-weight: 600;
    margin-bottom: 4px;
}

.kb-desc {
    font-size: 0.9em;
    opacity: 0.9;
}


/* ========================================
   Major Category Cards (resource listing)
   ======================================== */

.major-category {
    margin-bottom: 48px;
    background: var(--ds-bg-card, #FFFFFF);
    border-radius: var(--card-radius, 12px);
    padding: 32px;
    border: 1px solid var(--ds-border, #E2E8F0);
    box-shadow: var(--card-shadow);
    transition: all 0.2s ease;
}

.major-category:hover {
    box-shadow: var(--card-shadow-hover);
    transform: translateY(-2px);
}

.major-category-header {
    color: var(--ds-text, #111827);
    font-size: 1.8em;
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    gap: 12px;
    padding-bottom: 16px;
    border-bottom: 3px solid var(--color-aws-orange, #dc7600);
}

.major-category-icon {
    font-size: 1.2em;
}

.section-icon {
    font-size: 1.1em;
}

.toc-section {
    margin-bottom: 28px;
    border-left: 3px solid var(--ds-border-strong, #CBD5E1);
    padding-left: 20px;
    margin-left: 8px;
    padding-top: 8px;
    padding-bottom: 8px;
    border-radius: 0 8px 8px 0;
    transition: border-color 0.2s ease;
}

.toc-section:hover {
    border-left-color: var(--color-aws-orange, #dc7600);
}

.toc-section:last-child {
    margin-bottom: 0;
}

.toc-section h2 {
    color: var(--ds-text, #374151);
    font-size: 1.4em;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.resource-list {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 10px;
}

/* bookmark.css から移植: index ページのカードは link + bookmark の横並び */
.resource-list li {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background-color: var(--ds-bg-subtle, #F8FAFC);
    border: 1px solid var(--ds-border, #E2E8F0);
    border-radius: 8px;
    transition: all 0.2s ease;
}

.resource-list li a {
    flex: 1;
}

.resource-list li:hover {
    background-color: #FFF8EE;
    border-color: var(--color-aws-orange, #dc7600);
    transform: translateX(4px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.resource-list a {
    display: block;
    padding: 12px 16px;
    color: var(--ds-text, #374151);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s ease;
}

.resource-list a:hover {
    color: var(--color-aws-orange, #dc7600);
}

.resource-count {
    display: inline-block;
    background-color: var(--color-aws-orange, #dc7600);
    color: #FFFFFF;
    padding: 3px 10px;
    border-radius: 16px;
    font-size: 0.8em;
    font-weight: 600;
    margin-left: 8px;
}

[data-theme="dark"] .major-category {
    background: var(--ds-bg-card);
    border-color: var(--ds-border);
}

[data-theme="dark"] .major-category-header {
    color: var(--ds-text);
}

[data-theme="dark"] .toc-section {
    border-left-color: var(--ds-border);
}

[data-theme="dark"] .toc-section:hover {
    border-left-color: var(--color-aws-orange);
}

[data-theme="dark"] .toc-section h2 {
    color: var(--ds-text);
}

[data-theme="dark"] .resource-list li {
    background-color: var(--ds-bg-inset);
    border-color: var(--ds-border);
}

[data-theme="dark"] .resource-list li:hover {
    background-color: rgba(220, 118, 0, 0.08);
    border-color: var(--color-aws-orange);
}

[data-theme="dark"] .resource-list a {
    color: var(--ds-text-secondary);
}


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

.footer-note {
    text-align: center;
    margin-top: 40px;
    padding: 28px;
    background-color: var(--ds-bg-subtle, #F8FAFC);
    border-radius: var(--card-radius, 12px);
    border: 1px solid var(--ds-border, #E2E8F0);
}

.footer-note p {
    color: var(--ds-text-tertiary, #6B7280);
    font-size: 0.9em;
}

[data-theme="dark"] .footer-note {
    background-color: var(--ds-bg-inset);
    border-color: var(--ds-border);
}


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

.site-footer {
    text-align: center;
    padding: 24px;
    margin-top: 40px;
    border-top: 1px solid var(--ds-border, #E2E8F0);
    background-color: var(--ds-bg-subtle, #F8FAFC);
}

.site-footer p {
    color: var(--ds-text-tertiary, #6B7280);
    font-size: 0.85em;
    margin: 0;
}

.site-footer a {
    color: var(--color-aws-orange, #dc7600);
    text-decoration: none;
    font-weight: 600;
}

.site-footer a:hover {
    text-decoration: underline;
}

.site-footer-sub {
    color: var(--ds-text-muted, #9CA3AF);
    font-size: 0.78em;
    margin-top: 4px;
}

[data-theme="dark"] .site-footer {
    background-color: var(--ds-bg-inset);
    border-color: var(--ds-border);
}


/* ========================================
   Breadcrumb (index-specific hidden state)
   ======================================== */

.breadcrumb {
    display: none;
}

.breadcrumb.show {
    display: block;
}


/* ========================================
   Scroll-to-top & Reading Progress (index)
   ======================================== */

.scroll-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 48px;
    height: 48px;
    background: var(--color-aws-orange, #dc7600);
    color: #FFFFFF;
    border: none;
    border-radius: 12px;
    font-size: 1.3em;
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(220, 118, 0, 0.3);
    opacity: 0;
    visibility: hidden;
    transition: all 0.2s ease;
    z-index: var(--z-scroll-top, 1000);
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.scroll-to-top:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(220, 118, 0, 0.4);
}


/* ========================================
   Responsive — Index Page
   ======================================== */

@media (max-width: 768px) {
    .index-content {
        padding: 24px 20px;
    }

    .hero-cards-grid {
        grid-template-columns: 1fr;
    }

    .hero-card {
        min-height: 180px;
        padding: 22px;
    }

    .hero-card-icon {
        font-size: 2.2em;
    }

    .hero-card-title {
        font-size: 1.15em;
    }

    .major-category {
        padding: 22px 18px;
        margin-bottom: 32px;
    }

    .major-category-header {
        font-size: 1.4em;
    }

    .resource-list {
        grid-template-columns: 1fr;
    }

    .category-links {
        grid-template-columns: 1fr;
    }

    .category-link {
        padding: 12px 16px;
        min-height: 48px;
    }

    .kb-button {
        flex-direction: column;
        text-align: center;
        padding: 20px;
    }

    .kb-icon {
        font-size: 2em;
        margin-right: 0;
        margin-bottom: 10px;
    }

    .scroll-to-top {
        bottom: 20px;
        right: 20px;
        width: 44px;
        height: 44px;
    }
}

@media (max-width: 480px) {
    .index-content {
        padding: 20px 14px;
    }

    .stats-bar {
        gap: 12px;
    }
}