/* ===================================
   AGENDA LITE — Centro de Ayuda
   Estilos principales
   =================================== */

:root {
    --color-primary: #2563eb;
    --color-primary-dark: #1d4ed8;
    --color-primary-light: #eff6ff;
    --color-pro: #7c3aed;
    --color-pro-light: #f5f3ff;
    --color-success: #059669;
    --color-success-light: #ecfdf5;
    --color-warning: #d97706;
    --color-warning-light: #fffbeb;
    --color-danger: #dc2626;
    --color-danger-light: #fef2f2;
    --color-info: #0891b2;
    --color-info-light: #ecfeff;

    --color-bg: #ffffff;
    --color-bg-alt: #f8fafc;
    --color-bg-hover: #f1f5f9;
    --color-border: #e2e8f0;
    --color-border-light: #f1f5f9;
    --color-text: #1e293b;
    --color-text-secondary: #64748b;
    --color-text-tertiary: #94a3b8;

    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'SF Mono', 'Fira Code', 'Fira Mono', monospace;

    --sidebar-width: 280px;
    --header-height: 60px;
    --toc-width: 220px;
    --content-max-width: 720px;
    --radius: 8px;
    --radius-sm: 6px;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow: 0 1px 3px rgba(0,0,0,0.1), 0 1px 2px rgba(0,0,0,0.06);
    --shadow-lg: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -2px rgba(0,0,0,0.1);
    --transition: 150ms ease;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: calc(var(--header-height) + 24px);
}

body {
    font-family: var(--font-family);
    font-size: 15px;
    line-height: 1.7;
    color: var(--color-text);
    background: var(--color-bg);
    -webkit-font-smoothing: antialiased;
}

a { color: var(--color-primary); text-decoration: none; }
a:hover { color: var(--color-primary-dark); }

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

/* --- Header --- */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    z-index: 100;
    display: flex;
    align-items: center;
}

.header-inner {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    gap: 24px;
    justify-content: space-between;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--color-text);
    padding: 4px;
}

.site-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--color-text);
    font-weight: 600;
    font-size: 15px;
    white-space: nowrap;
}
.site-logo:hover { color: var(--color-text); }
.site-logo img { border-radius: 6px; }

.header-search { flex: 1; max-width: 480px; }

.search-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.search-icon {
    position: absolute;
    left: 12px;
    color: var(--color-text-tertiary);
    display: flex;
    pointer-events: none;
}

.search-input {
    width: 100%;
    height: 38px;
    padding: 0 40px 0 40px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    font-size: 14px;
    font-family: var(--font-family);
    background: var(--color-bg-alt);
    color: var(--color-text);
    transition: border-color var(--transition), box-shadow var(--transition);
}

.search-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
    background: var(--color-bg);
}

.search-input::placeholder { color: var(--color-text-tertiary); }

.search-shortcut {
    position: absolute;
    right: 10px;
    font-family: var(--font-family);
    font-size: 11px;
    color: var(--color-text-tertiary);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 4px;
    padding: 2px 6px;
    pointer-events: none;
}

.search-results {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    margin-top: 4px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    max-height: 400px;
    overflow-y: auto;
    z-index: 200;
}

.search-results.is-visible { display: block; }

.search-result-item {
    display: block;
    padding: 10px 14px;
    border-bottom: 1px solid var(--color-border-light);
    color: var(--color-text);
    transition: background var(--transition);
}
.search-result-item:last-child { border-bottom: none; }
.search-result-item:hover { background: var(--color-bg-hover); }
.search-result-item .result-title { font-weight: 500; font-size: 14px; }
.search-result-item .result-category { font-size: 12px; color: var(--color-text-secondary); }
.search-result-item mark { background: rgba(37, 99, 235, 0.15); color: inherit; border-radius: 2px; padding: 0 1px; }
.search-no-results { padding: 16px; text-align: center; color: var(--color-text-secondary); font-size: 14px; }

.header-right {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    gap: 16px;
}

.header-link {
    font-size: 13px;
    font-weight: 500;
    color: var(--color-text-secondary);
    transition: color var(--transition);
}
.header-link:hover { color: var(--color-primary); }

/* --- Layout --- */
.layout-with-sidebar {
    display: flex;
    min-height: 100vh;
    padding-top: var(--header-height);
}

.main-content {
    flex: 1;
    min-width: 0;
    padding: 32px 40px 64px;
}

.home-content {
    padding-top: var(--header-height);
}

/* --- Sidebar --- */
.sidebar {
    position: fixed;
    top: var(--header-height);
    left: 0;
    bottom: 0;
    width: var(--sidebar-width);
    flex-shrink: 0;
    z-index: 90;
}

.sidebar-overlay {
    display: none;
}

.sidebar-inner {
    height: 100%;
    overflow-y: auto;
    padding: 16px 0;
    border-right: 1px solid var(--color-border);
    background: var(--color-bg);
}

.sidebar-header {
    display: none;
}

.sidebar-title {
    font-weight: 600;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-tertiary);
    padding: 0 20px 8px;
}

.layout-with-sidebar .main-content {
    margin-left: var(--sidebar-width);
}

/* Sidebar nav */
.sidebar-nav { padding: 0 8px; }

.nav-category { margin-bottom: 2px; }

.nav-category-toggle {
    width: 100%;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    border: none;
    background: none;
    cursor: pointer;
    font-family: var(--font-family);
    font-size: 13px;
    font-weight: 600;
    color: var(--color-text);
    border-radius: var(--radius-sm);
    transition: background var(--transition);
    text-align: left;
}
.nav-category-toggle:hover { background: var(--color-bg-hover); }

.nav-category-icon { display: flex; color: var(--color-text-secondary); flex-shrink: 0; }
.nav-category-title { flex: 1; }
.nav-chevron {
    display: flex;
    transition: transform var(--transition);
    color: var(--color-text-tertiary);
}

.nav-category.is-open .nav-chevron { transform: rotate(90deg); }

.nav-articles {
    list-style: none;
    display: none;
    padding: 2px 0 6px 0;
}
.nav-category.is-open .nav-articles { display: block; }

.nav-article-link {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px 6px 36px;
    font-size: 13px;
    color: var(--color-text-secondary);
    border-radius: var(--radius-sm);
    transition: all var(--transition);
}
.nav-article-link:hover {
    color: var(--color-text);
    background: var(--color-bg-hover);
}
.nav-article-link.is-active {
    color: var(--color-primary);
    background: var(--color-primary-light);
    font-weight: 500;
}

.nav-pro-badge {
    font-size: 10px;
    font-weight: 600;
    color: var(--color-pro);
    background: var(--color-pro-light);
    padding: 1px 6px;
    border-radius: 10px;
    flex-shrink: 0;
}

/* --- Hero --- */
.hero {
    background: linear-gradient(135deg, var(--color-primary-light) 0%, #fff 100%);
    border-bottom: 1px solid var(--color-border);
    padding: 64px 24px;
    text-align: center;
}

.hero-inner { max-width: 640px; margin: 0 auto; }
.hero-title { font-size: 32px; font-weight: 700; margin-bottom: 12px; color: var(--color-text); }
.hero-subtitle { font-size: 16px; color: var(--color-text-secondary); margin-bottom: 28px; line-height: 1.6; }

.hero-search .search-wrapper { max-width: 520px; margin: 0 auto; }
.search-input--hero {
    height: 48px;
    font-size: 16px;
    border-radius: 12px;
    padding: 0 20px 0 48px;
    box-shadow: var(--shadow);
}

/* --- Home Sections --- */
.home-section {
    max-width: 960px;
    margin: 0 auto;
    padding: 48px 24px;
}
.home-section + .home-section { padding-top: 0; }

.section-title {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 8px;
}
.section-desc {
    color: var(--color-text-secondary);
    margin-bottom: 24px;
    font-size: 15px;
}

/* Steps grid */
.steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 12px;
}

.step-card {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 16px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    transition: all var(--transition);
    color: var(--color-text);
}
.step-card:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow);
    color: var(--color-text);
}

.step-number {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: var(--color-primary);
    color: #fff;
    border-radius: 50%;
    font-weight: 700;
    font-size: 14px;
    flex-shrink: 0;
}

.step-title { font-weight: 500; font-size: 14px; }
.step-category { font-size: 12px; color: var(--color-text-tertiary); display: block; }

/* Categories grid */
.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 16px;
}

.category-card {
    padding: 24px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    transition: all var(--transition);
    color: var(--color-text);
}
.category-card:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow);
    transform: translateY(-1px);
    color: var(--color-text);
}

.category-card-icon {
    color: var(--color-primary);
    margin-bottom: 12px;
}
.category-card-title { font-size: 15px; font-weight: 600; margin-bottom: 6px; }
.category-card-desc { font-size: 13px; color: var(--color-text-secondary); margin-bottom: 12px; line-height: 1.5; }
.category-card-count { font-size: 12px; color: var(--color-text-tertiary); }

/* Popular list */
.popular-list { display: flex; flex-direction: column; gap: 2px; }

.popular-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    color: var(--color-text);
    transition: background var(--transition);
}
.popular-item:hover { background: var(--color-bg-hover); color: var(--color-text); }
.popular-icon { color: var(--color-text-tertiary); display: flex; }
.popular-title { flex: 1; font-size: 14px; font-weight: 500; }

/* Comparison table */
.comparison-table-wrapper { overflow-x: auto; margin-bottom: 20px; }

.comparison-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}
.comparison-table th,
.comparison-table td {
    padding: 10px 16px;
    border-bottom: 1px solid var(--color-border-light);
    text-align: left;
}
.comparison-table th {
    font-weight: 600;
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    color: var(--color-text-secondary);
    background: var(--color-bg-alt);
}
.comparison-table th:nth-child(2),
.comparison-table th:nth-child(3),
.comparison-table td:nth-child(2),
.comparison-table td:nth-child(3) {
    text-align: center;
    width: 80px;
}
.comparison-table .check { color: var(--color-success); font-weight: 600; font-size: 16px; }
.comparison-table .cross { color: var(--color-text-tertiary); }
.comparison-table .pro-row td:first-child { font-weight: 500; }

.comparison-cta { text-align: center; padding-top: 8px; }

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    border-radius: var(--radius);
    font-family: var(--font-family);
    font-size: 14px;
    font-weight: 500;
    border: none;
    cursor: pointer;
    transition: all var(--transition);
}

.btn-primary {
    background: var(--color-primary);
    color: #fff;
}
.btn-primary:hover {
    background: var(--color-primary-dark);
    color: #fff;
}

.btn-icon {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--color-text-tertiary);
    padding: 4px;
    border-radius: 4px;
    display: inline-flex;
    transition: all var(--transition);
}
.btn-icon:hover {
    color: var(--color-text);
    background: var(--color-bg-hover);
}

/* --- Breadcrumbs --- */
.breadcrumbs {
    display: flex;
    align-items: center;
    gap: 0;
    font-size: 13px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}
.breadcrumbs a { color: var(--color-text-secondary); }
.breadcrumbs a:hover { color: var(--color-primary); }
.breadcrumbs .sep { margin: 0 8px; color: var(--color-text-tertiary); }
.breadcrumbs .current { color: var(--color-text); font-weight: 500; }

/* --- Article --- */
.article-header { margin-bottom: 32px; }
.article-title { font-size: 28px; font-weight: 700; margin-bottom: 12px; line-height: 1.3; }

.article-meta {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.article-body-wrapper {
    display: flex;
    gap: 40px;
}

.article-body {
    flex: 1;
    min-width: 0;
    max-width: var(--content-max-width);
}

/* Article TOC */
.article-toc {
    width: var(--toc-width);
    flex-shrink: 0;
}

.toc-sticky {
    position: sticky;
    top: calc(var(--header-height) + 24px);
}

.toc-title {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-tertiary);
    font-weight: 600;
    margin-bottom: 10px;
}

.toc-nav a {
    display: block;
    padding: 4px 0;
    font-size: 13px;
    color: var(--color-text-secondary);
    border-left: 2px solid var(--color-border);
    padding-left: 12px;
    margin-left: 0;
    transition: all var(--transition);
}
.toc-nav a:hover { color: var(--color-primary); border-left-color: var(--color-primary); }
.toc-nav a.is-active { color: var(--color-primary); border-left-color: var(--color-primary); font-weight: 500; }
.toc-nav a.toc-h3 { padding-left: 24px; font-size: 12px; }

/* Article content typography */
.article-body h2 {
    font-size: 20px;
    font-weight: 700;
    margin-top: 40px;
    margin-bottom: 16px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--color-border-light);
}

.article-body h3 {
    font-size: 17px;
    font-weight: 600;
    margin-top: 32px;
    margin-bottom: 12px;
}

.article-body h2 .anchor-link,
.article-body h3 .anchor-link {
    color: var(--color-text-tertiary);
    margin-left: 6px;
    opacity: 0;
    transition: opacity var(--transition);
    font-weight: 400;
    text-decoration: none;
}
.article-body h2:hover .anchor-link,
.article-body h3:hover .anchor-link { opacity: 1; }

.article-body p { margin-bottom: 16px; }

.article-body ul, .article-body ol {
    margin-bottom: 16px;
    padding-left: 24px;
}
.article-body li { margin-bottom: 6px; }

.article-body code {
    font-family: var(--font-mono);
    font-size: 13px;
    background: var(--color-bg-alt);
    border: 1px solid var(--color-border-light);
    padding: 2px 6px;
    border-radius: 4px;
}

.article-body pre {
    background: #1e293b;
    color: #e2e8f0;
    padding: 16px 20px;
    border-radius: var(--radius);
    overflow-x: auto;
    margin-bottom: 16px;
    font-size: 13px;
    line-height: 1.6;
}
.article-body pre code {
    background: none;
    border: none;
    padding: 0;
    color: inherit;
}

.article-body table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 16px;
    font-size: 14px;
}
.article-body table th,
.article-body table td {
    padding: 10px 14px;
    border: 1px solid var(--color-border);
    text-align: left;
}
.article-body table th {
    background: var(--color-bg-alt);
    font-weight: 600;
}

.article-body strong { font-weight: 600; }

/* Related articles */
.related-articles {
    margin-top: 48px;
    padding-top: 32px;
    border-top: 1px solid var(--color-border);
}
.related-articles h3 { font-size: 16px; font-weight: 600; margin-bottom: 16px; }

.related-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 10px;
}

.related-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    padding: 12px 16px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    color: var(--color-text);
    font-size: 13px;
    font-weight: 500;
    transition: all var(--transition);
}
.related-card:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

/* Category page */
.category-header {
    margin-bottom: 32px;
}
.category-header-icon { color: var(--color-primary); margin-bottom: 12px; }
.category-header h1 { font-size: 28px; font-weight: 700; margin-bottom: 8px; }
.category-description { color: var(--color-text-secondary); }

.articles-list { display: flex; flex-direction: column; gap: 4px; }

.article-list-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    color: var(--color-text);
    transition: all var(--transition);
}
.article-list-item:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-sm);
    color: var(--color-text);
}
.article-list-title { font-weight: 500; font-size: 15px; margin-bottom: 6px; }
.article-list-badges { display: flex; gap: 6px; }
.article-list-arrow { color: var(--color-text-tertiary); display: flex; }

/* --- Error page --- */
.error-content {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 60vh;
    padding-top: var(--header-height);
}
.error-box { text-align: center; }
.error-box h1 { font-size: 72px; font-weight: 700; color: var(--color-text-tertiary); margin-bottom: 8px; }
.error-box p { color: var(--color-text-secondary); margin-bottom: 24px; }

/* Search page */
.search-query-label { color: var(--color-text-secondary); margin-bottom: 24px; }

/* --- Footer --- */
.site-footer {
    border-top: 1px solid var(--color-border);
    padding: 24px;
    text-align: center;
    font-size: 13px;
    color: var(--color-text-tertiary);
}
.site-footer a { color: var(--color-text-secondary); }

/* --- Responsive --- */
@media (max-width: 1100px) {
    .article-toc { display: none; }
}

@media (max-width: 900px) {
    .sidebar {
        transform: translateX(-100%);
        transition: transform 250ms ease;
        z-index: 110;
    }
    .sidebar.is-open { transform: translateX(0); }

    .sidebar-overlay {
        display: block;
        position: fixed;
        inset: 0;
        background: rgba(0,0,0,0.4);
        z-index: -1;
        opacity: 0;
        transition: opacity 250ms ease;
        pointer-events: none;
    }
    .sidebar.is-open .sidebar-overlay {
        opacity: 1;
        pointer-events: auto;
        z-index: -1;
    }

    .sidebar-header {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 12px 16px;
        border-bottom: 1px solid var(--color-border);
    }

    .sidebar-close {
        background: none;
        border: none;
        cursor: pointer;
        color: var(--color-text-secondary);
        padding: 4px;
    }

    .layout-with-sidebar .main-content {
        margin-left: 0;
    }

    .mobile-menu-toggle { display: flex; }

    .main-content { padding: 24px 20px 48px; }
    .header-right { display: none; }
    .search-shortcut { display: none; }
}

@media (max-width: 600px) {
    .hero { padding: 40px 16px; }
    .hero-title { font-size: 24px; }
    .hero-subtitle { font-size: 14px; }
    .article-title { font-size: 22px; }
    .categories-grid { grid-template-columns: 1fr; }
    .steps-grid { grid-template-columns: 1fr; }
}