/* 
 * THC Gestión Blog - Sistema de Estilos Principal
 * Framework CSS completo para el blog de THC Gestión
 * Versión: 2.2.0 — +Sección 21 publicidad AdSense
 */

/* ===============================================
   1. VARIABLES CSS GLOBALES
   =============================================== */
:root {
    --primary-blue: #0066ff;
    --dark-blue: #001a44;
    --neon-green: #00ff88;
    --cyber-purple: #8b5cf6;
    --dark-bg: #0a0a0a;
    --card-bg: #1a1a1a;
    --surface-bg: #121212;
    --text-primary: #ffffff;
    --text-secondary: #a0a0a0;
    --text-tertiary: #707070;
    --text-muted: #505050;
    --gradient-primary: linear-gradient(135deg, #0066ff 0%, #8b5cf6 100%);
    --gradient-accent: linear-gradient(135deg, #00ff88 0%, #0066ff 100%);
    --gradient-dark: linear-gradient(135deg, #0a0a0a 0%, #1a1a1a 100%);
    --gradient-surface: linear-gradient(135deg, #1a1a1a 0%, #121212 100%);
    --gradient-hero: linear-gradient(180deg, rgba(0, 102, 255, 0.1) 0%, rgba(0, 0, 0, 0) 100%);
    --success: #00ff88;
    --success-bg: rgba(0, 255, 136, 0.1);
    --warning: #f59e0b;
    --warning-bg: rgba(245, 158, 11, 0.1);
    --error: #ef4444;
    --error-bg: rgba(239, 68, 68, 0.1);
    --info: #0066ff;
    --info-bg: rgba(0, 102, 255, 0.1);
    --primary-blue-05: rgba(0, 102, 255, 0.05);
    --primary-blue-10: rgba(0, 102, 255, 0.1);
    --primary-blue-20: rgba(0, 102, 255, 0.2);
    --primary-blue-30: rgba(0, 102, 255, 0.3);
    --neon-green-05: rgba(0, 255, 136, 0.05);
    --neon-green-10: rgba(0, 255, 136, 0.1);
    --neon-green-20: rgba(0, 255, 136, 0.2);
    --cyber-purple-10: rgba(139, 92, 246, 0.1);
    --cyber-purple-20: rgba(139, 92, 246, 0.2);
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    --space-4xl: 5rem;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.2);
    --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.25);
    --shadow-glow: 0 0 20px rgba(0, 102, 255, 0.3);
    --shadow-glow-green: 0 0 20px rgba(0, 255, 136, 0.3);
    --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.3);
    --transition-fast: all 0.15s ease;
    --transition-base: all 0.3s ease;
    --transition-slow: all 0.5s ease;
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
}

/* ===============================================
   2. RESET Y BASE
   =============================================== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
img { display: block; max-width: 100%; height: auto; }
img:not([src]):not([srcset]) { visibility: hidden; }
.no-fouc { visibility: hidden; opacity: 0; }
.fouc-ready { visibility: visible; opacity: 1; transition: opacity 0.3s ease; }
html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    scroll-behavior: smooth;
    text-rendering: optimizeLegibility;
}
body {
    font-family: var(--font-primary);
    background: var(--dark-bg);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
}
body::before {
    content: '';
    position: fixed; top: 0; left: 0; right: 0; bottom: 0;
    background-image:
        radial-gradient(circle at 20% 80%, var(--primary-blue-10) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, var(--cyber-purple-10) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, var(--neon-green-05) 0%, transparent 50%);
    pointer-events: none;
    z-index: -1;
}

/* ===============================================
   3. TIPOGRAFÍA
   =============================================== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600; line-height: 1.2;
    margin-bottom: var(--space-lg);
    color: var(--text-primary);
    letter-spacing: -0.02em;
}
h1 {
    font-size: clamp(2rem, 5vw, 3.5rem); font-weight: 700;
    background: var(--gradient-primary);
    background-clip: text; -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}
h2 {
    font-size: clamp(1.5rem, 4vw, 2.5rem); font-weight: 600;
    position: relative; padding-bottom: var(--space-md);
}
h2::after {
    content: '';
    position: absolute; bottom: 0; left: 0;
    width: 60px; height: 3px;
    background: var(--gradient-accent);
    border-radius: var(--radius-full);
}
h3 { font-size: clamp(1.25rem, 3vw, 2rem); }
h4 { font-size: clamp(1.125rem, 2.5vw, 1.5rem); }
h5 { font-size: clamp(1rem, 2vw, 1.25rem); text-transform: uppercase; letter-spacing: 0.05em; color: var(--neon-green); }
h6 { font-size: 1rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--text-secondary); }
p { margin-bottom: var(--space-lg); color: var(--text-secondary); line-height: 1.8; font-size: 1.05rem; }
a { color: var(--primary-blue); text-decoration: none; transition: var(--transition-fast); position: relative; }
a:hover { color: var(--neon-green); text-shadow: 0 0 8px var(--neon-green-20); }
.link-underline { position: relative; display: inline-block; }
.link-underline::after { content: ''; position: absolute; bottom: -2px; left: 0; width: 0; height: 2px; background: var(--gradient-accent); transition: width 0.3s ease; }
.link-underline:hover::after { width: 100%; }
strong, b { font-weight: 600; color: var(--neon-green); }
em, i { font-style: italic; color: var(--text-secondary); }
mark { background: var(--neon-green-20); color: var(--neon-green); padding: 0.125rem 0.25rem; border-radius: var(--radius-sm); }
code { font-family: var(--font-mono); background: var(--card-bg); padding: 0.125rem 0.375rem; border-radius: var(--radius-sm); font-size: 0.875rem; color: var(--neon-green); border: 1px solid var(--primary-blue-20); }
pre { background: var(--card-bg); padding: var(--space-xl); border-radius: var(--radius-lg); overflow-x: auto; margin-bottom: var(--space-xl); border: 1px solid var(--primary-blue-20); position: relative; }
pre::before { content: 'CODE'; position: absolute; top: var(--space-sm); right: var(--space-sm); font-size: 0.75rem; color: var(--text-muted); font-family: var(--font-mono); letter-spacing: 0.1em; }
pre code { background: transparent; padding: 0; color: var(--text-primary); border: none; }
blockquote { border-left: 4px solid var(--primary-blue); padding-left: var(--space-xl); margin: var(--space-xl) 0; font-style: italic; color: var(--text-secondary); background: var(--primary-blue-05); padding: var(--space-lg) var(--space-xl); border-radius: var(--radius-md); position: relative; }
blockquote::before { content: '"'; position: absolute; top: -10px; left: 20px; font-size: 4rem; color: var(--primary-blue-20); font-family: serif; }

/* ===============================================
   4. LISTAS
   =============================================== */
ul, ol { margin-bottom: var(--space-lg); padding-left: var(--space-xl); }
li { margin-bottom: var(--space-sm); color: var(--text-secondary); position: relative; }
ul li::marker { color: var(--neon-green); }
ol li::marker { color: var(--primary-blue); font-weight: 600; }
.custom-list { list-style: none; padding-left: 0; }
.custom-list li { padding-left: var(--space-xl); position: relative; }
.custom-list li::before { content: '▸'; position: absolute; left: 0; color: var(--neon-green); font-weight: bold; }

/* ===============================================
   5. BOTONES
   =============================================== */
.btn {
    display: inline-flex; align-items: center; justify-content: center;
    gap: var(--space-sm); padding: var(--space-md) var(--space-xl);
    border-radius: var(--radius-full); font-weight: 600; font-size: 0.95rem;
    cursor: pointer; border: none; transition: var(--transition-base);
    text-decoration: none; white-space: nowrap; position: relative;
    overflow: hidden; text-transform: uppercase; letter-spacing: 0.05em;
}
.btn::before { content: ''; position: absolute; top: 50%; left: 50%; width: 0; height: 0; border-radius: 50%; background: rgba(255,255,255,0.2); transform: translate(-50%,-50%); transition: width 0.6s, height 0.6s; }
.btn:active::before { width: 300px; height: 300px; }
.btn-primary { background: var(--gradient-primary); color: white; box-shadow: 0 4px 15px rgba(0,102,255,0.3); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 6px 25px rgba(0,102,255,0.4); }
.btn-secondary { background: transparent; color: var(--neon-green); border: 2px solid var(--neon-green); }
.btn-secondary:hover { background: var(--neon-green); color: var(--dark-bg); box-shadow: var(--shadow-glow-green); }
.btn-ghost { background: transparent; color: var(--text-secondary); border: 1px solid var(--primary-blue-20); }
.btn-ghost:hover { background: var(--primary-blue-10); border-color: var(--primary-blue); color: var(--primary-blue); }
.btn-light { background: white; color: var(--dark-bg); font-weight: 700; }
.btn-light:hover { background: #f0f0f0; transform: translateY(-2px); box-shadow: 0 6px 25px rgba(255,255,255,0.2); }
.btn-lg { padding: var(--space-lg) var(--space-2xl); font-size: 1.05rem; }
.btn-sm { padding: var(--space-xs) var(--space-md); font-size: 0.875rem; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; transform: none !important; }

/* ===============================================
   6. TARJETAS
   =============================================== */
.card { background: var(--card-bg); border-radius: var(--radius-lg); border: 1px solid var(--primary-blue-20); padding: var(--space-xl); transition: var(--transition-base); position: relative; overflow: hidden; }
.card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px; background: var(--gradient-primary); transform: scaleX(0); transition: transform 0.3s ease; }
.card:hover::before { transform: scaleX(1); }
.card:hover { background: var(--surface-bg); transform: translateY(-4px); box-shadow: var(--shadow-card); border-color: var(--neon-green); }
.card-header { margin-bottom: var(--space-lg); padding-bottom: var(--space-lg); border-bottom: 1px solid var(--primary-blue-10); }
.card-title { font-size: 1.25rem; font-weight: 600; color: var(--text-primary); margin-bottom: var(--space-sm); }
.card-subtitle { color: var(--text-secondary); font-size: 0.95rem; }
.card-content { color: var(--text-secondary); line-height: 1.7; }
.card-footer { margin-top: var(--space-lg); padding-top: var(--space-lg); border-top: 1px solid var(--primary-blue-10); display: flex; justify-content: space-between; align-items: center; }
.card-gradient { background: var(--gradient-surface); border: none; }
.card-featured { border-color: var(--neon-green); background: linear-gradient(135deg, var(--card-bg) 0%, rgba(0,255,136,0.05) 100%); position: relative; }
.card-featured::after { content: 'DESTACADO'; position: absolute; top: var(--space-md); right: var(--space-md); background: var(--gradient-accent); color: white; padding: var(--space-xs) var(--space-md); border-radius: var(--radius-full); font-size: 0.75rem; font-weight: 600; letter-spacing: 0.05em; }

/* ===============================================
   7. BLOG ESPECÍFICO
   =============================================== */
.blog-container { min-height: 100vh; background: var(--dark-bg); padding-top: 80px; }
.blog-header { background: var(--card-bg); border-bottom: 1px solid var(--primary-blue-20); padding: var(--space-xl) 0; position: fixed; top: 0; left: 0; right: 0; z-index: var(--z-sticky); backdrop-filter: blur(10px); background: rgba(26,26,26,0.95); }
.blog-nav { max-width: 1200px; margin: 0 auto; padding: 0 var(--space-xl); display: flex; justify-content: space-between; align-items: center; }
.blog-nav a { color: var(--text-secondary); text-decoration: none; font-size: 0.875rem; transition: var(--transition-fast); display: flex; align-items: center; gap: var(--space-xs); }
.blog-nav a:hover { color: var(--neon-green); }
.blog-breadcrumb { display: flex; align-items: center; gap: var(--space-sm); font-size: 0.875rem; }
.blog-breadcrumb span { color: var(--text-muted); }
.blog-breadcrumb .active { color: var(--neon-green); font-weight: 600; }
.post-container { max-width: 800px; margin: 0 auto; padding: var(--space-2xl) var(--space-xl); }
.post-meta { display: flex; align-items: center; gap: var(--space-lg); margin-bottom: var(--space-xl); font-size: 0.875rem; color: var(--text-secondary); flex-wrap: wrap; }
.post-category { background: var(--gradient-accent); color: white; padding: var(--space-xs) var(--space-md); border-radius: var(--radius-full); font-weight: 600; font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.05em; }
.post-date { display: flex; align-items: center; gap: var(--space-xs); }
.post-reading-time { display: flex; align-items: center; gap: var(--space-xs); }
.post-title { font-size: clamp(2rem, 4vw, 3rem); font-weight: 700; color: var(--text-primary); line-height: 1.2; margin-bottom: var(--space-lg); background: var(--gradient-primary); background-clip: text; -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.post-excerpt { font-size: 1.125rem; color: var(--text-secondary); line-height: 1.6; margin-bottom: var(--space-xl); font-style: italic; padding-left: var(--space-lg); border-left: 3px solid var(--neon-green); }
.post-featured-image { width: 100%; height: 400px; object-fit: cover; border-radius: var(--radius-lg); margin-bottom: var(--space-2xl); border: 1px solid var(--primary-blue-20); box-shadow: var(--shadow-lg); background-color: var(--card-bg); background-image: linear-gradient(135deg, var(--primary-blue-10) 0%, var(--cyber-purple-10) 100%); position: relative; }
.post-featured-image[loading="lazy"] { background: var(--card-bg); min-height: 400px; }
@keyframes skeleton-loading { 0% { background-color: var(--card-bg); } 50% { background-color: var(--surface-bg); } 100% { background-color: var(--card-bg); } }
.post-featured-image:not([src]) { animation: skeleton-loading 1.5s infinite ease-in-out; }
.post-content { color: var(--text-primary); line-height: 1.8; font-size: 1.05rem; }
.post-content h2 { font-size: 1.75rem; font-weight: 600; color: var(--text-primary); margin: var(--space-2xl) 0 var(--space-lg); position: relative; padding-bottom: var(--space-md); }
.post-content h2::after { content: ''; position: absolute; left: 0; bottom: 0; width: 60px; height: 3px; background: var(--gradient-accent); border-radius: var(--radius-full); }
.post-content h3 { font-size: 1.375rem; font-weight: 600; color: var(--text-primary); margin: var(--space-xl) 0 var(--space-md); }
.post-content h4 { font-size: 1.125rem; font-weight: 600; color: var(--neon-green); margin: var(--space-lg) 0 var(--space-md); text-transform: uppercase; letter-spacing: 0.05em; }
.post-content p { margin-bottom: var(--space-lg); color: var(--text-secondary); }
.post-content ul, .post-content ol { margin: var(--space-lg) 0; padding-left: var(--space-xl); }
.post-content li { margin-bottom: var(--space-sm); color: var(--text-secondary); }
.post-content strong { color: var(--neon-green); font-weight: 600; }
.post-content a { color: var(--primary-blue); text-decoration: underline; text-decoration-color: var(--primary-blue-30); text-underline-offset: 3px; }
.post-content a:hover { color: var(--neon-green); text-decoration-color: var(--neon-green); }

/* ===============================================
   8. CAJAS DE CONTENIDO
   =============================================== */
.warning-box { background: rgba(245,158,11,0.1); border: 1px solid rgba(245,158,11,0.3); border-left: 4px solid #f59e0b; padding: var(--space-xl); border-radius: var(--radius-md); margin: var(--space-xl) 0; }
.warning-box h4 { color: #f59e0b; font-size: 1.125rem; font-weight: 600; margin-bottom: var(--space-md); }
.tip-box { background: var(--primary-blue-10); border: 1px solid var(--primary-blue-20); border-left: 4px solid var(--neon-green); padding: var(--space-xl); border-radius: var(--radius-md); margin: var(--space-xl) 0; }
.tip-box h4 { color: var(--neon-green); font-size: 1.125rem; font-weight: 600; margin-bottom: var(--space-md); }
.highlight-box {
    background: linear-gradient(135deg, rgba(0,255,136,0.06) 0%, rgba(0,102,255,0.06) 100%);
    border: 1px solid rgba(0,255,136,0.22);
    border-left: 4px solid #00ff88;
    border-radius: var(--radius-md);
    padding: var(--space-xl); margin: var(--space-xl) 0;
}
.highlight-box h4 { color: #00ff88; font-size: 1.05rem; font-weight: 700; margin-bottom: var(--space-sm); }
.highlight-box p { color: #aaa; margin: 0; }
.info-box {
    background: var(--primary-blue-05);
    border: 1px solid var(--primary-blue-20);
    border-left: 4px solid var(--primary-blue);
    border-radius: var(--radius-md);
    padding: var(--space-xl); margin: var(--space-xl) 0;
}
.info-box h4 { color: var(--primary-blue); font-size: 1.05rem; font-weight: 700; margin-bottom: var(--space-sm); }
.info-box p { color: #aaa; margin: 0; }
.cta-box {
    background: linear-gradient(135deg, #001a4d 0%, #002200 100%);
    border: 1px solid rgba(0,255,136,0.16);
    border-radius: var(--radius-lg);
    padding: var(--space-2xl);
    text-align: center; margin: var(--space-2xl) 0;
    position: relative; overflow: hidden;
}
.cta-box::before {
    content: '';
    position: absolute; inset: 0;
    background:
        radial-gradient(ellipse 60% 50% at 20% 50%, rgba(0,102,255,0.1) 0%, transparent 70%),
        radial-gradient(ellipse 50% 60% at 80% 50%, rgba(0,255,136,0.08) 0%, transparent 70%);
    pointer-events: none;
    animation: none;
}
.cta-box h3 { color: #fff !important; font-size: 1.4rem !important; font-weight: 700 !important; margin-bottom: 0.75rem !important; position: relative; z-index: 1; }
.cta-box p { color: rgba(255,255,255,0.72) !important; margin-bottom: 1.25rem !important; position: relative; z-index: 1; }
.cta-box .btn,
.cta-box a.btn-light,
.cta-box a[class*="btn"] {
    background: #00ff88 !important; color: #000 !important;
    font-weight: 800 !important; border-radius: 12px !important;
    padding: 13px 30px !important; position: relative; z-index: 1;
    box-shadow: 0 6px 24px rgba(0,255,136,0.3) !important;
    display: inline-flex !important; align-items: center !important; gap: 8px !important;
    text-transform: none !important; letter-spacing: 0 !important;
}
.cta-box .btn:hover,
.cta-box a.btn-light:hover,
.cta-box a[class*="btn"]:hover {
    background: #00e87a !important; transform: translateY(-2px) !important;
    box-shadow: 0 10px 30px rgba(0,255,136,0.45) !important;
}
.cta-box small, .cta-box .cta-disclaimer {
    display: block; font-size: 0.73rem;
    color: rgba(255,255,255,0.35); margin-top: 0.5rem;
    position: relative; z-index: 1;
}

/* ===============================================
   9. COMPONENTES COMPARATIVAS
   =============================================== */
.ct { width: 100%; border-collapse: collapse; font-size: 0.84rem; margin: 1.5rem 0; }
.ct th { background: #181818; padding: 0.6rem 0.85rem; text-align: left; border-bottom: 2px solid rgba(0,102,255,0.2); font-weight: 600; white-space: nowrap; color: #fff; }
.ct td { padding: 0.55rem 0.85rem; border-bottom: 1px solid rgba(0,102,255,0.07); vertical-align: middle; color: #999; }
.ct tbody tr:hover td { background: rgba(0,102,255,0.04); }
.ct .best-row td { background: rgba(0,102,255,0.06); }
.ct .win { color: #00ff88; font-weight: 700; }
.ct .ok  { color: #00ff88; }
.ct .no  { color: #ef4444; }
.ct .med { color: #f59e0b; }
.vcard { background: #111; border: 1px solid rgba(0,102,255,0.15); border-radius: 12px; padding: 1.1rem 1.4rem; margin: 0.85rem 0; }
.vcard h4 { margin-bottom: 0.4rem; font-size: 0.95rem; color: #fff; }
.vcard p  { color: #888; font-size: 0.88rem; margin: 0; }
.migbox { background: linear-gradient(135deg, rgba(0,102,255,0.08), rgba(0,255,136,0.06)); border: 1px solid rgba(0,102,255,0.18); border-radius: 14px; padding: 1.5rem; margin: 1.5rem 0; text-align: center; }
.migbox h3 { color: #fff; font-size: 1.15rem; margin-bottom: 0.5rem; }
.migbox p  { color: #888; margin-bottom: 1rem; font-size: 0.9rem; }

/* ===============================================
   10. ERROR CARDS
   =============================================== */
.error-card { background: var(--card-bg); border: 1px solid rgba(239,68,68,0.2); border-left: 4px solid #ef4444; border-radius: var(--radius-lg); padding: var(--space-xl); margin: var(--space-xl) 0; position: relative; overflow: hidden; }
.error-card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 4px; background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%); }
.error-header { display: flex; align-items: flex-start; gap: var(--space-lg); margin-bottom: var(--space-lg); }
.error-icon { background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%); color: white; width: 50px; height: 50px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: bold; font-size: 1.25rem; flex-shrink: 0; }
.error-content h4 { color: var(--text-primary); font-size: 1.25rem; font-weight: 600; margin-bottom: var(--space-md); display: flex; align-items: center; gap: var(--space-sm); }
.error-description { color: var(--text-secondary); line-height: 1.6; margin-bottom: var(--space-lg); }
.error-consequences { background: rgba(239,68,68,0.1); border-radius: var(--radius-md); padding: var(--space-lg); margin: var(--space-lg) 0; }
.error-consequences h5 { color: #ef4444; font-size: 0.95rem; font-weight: 600; margin-bottom: var(--space-md); text-transform: uppercase; letter-spacing: 0.05em; }
.error-solution { background: var(--primary-blue-05); border-radius: var(--radius-md); padding: var(--space-lg); margin-top: var(--space-lg); }
.error-solution h5 { color: var(--neon-green); font-size: 0.95rem; font-weight: 600; margin-bottom: var(--space-md); text-transform: uppercase; letter-spacing: 0.05em; }
.severity-indicator { display: inline-flex; align-items: center; font-size: 0.8rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; padding: 2px 8px; border-radius: var(--radius-sm); margin-left: var(--space-sm); }
.severity-critical { background: rgba(220,38,38,0.2); color: #dc2626; }
.severity-high { background: rgba(234,88,12,0.2); color: #ea580c; }
.severity-medium { background: rgba(245,158,11,0.2); color: #f59e0b; }

/* ===============================================
   11. CHECKLIST
   =============================================== */
.checklist-container { background: var(--card-bg); border: 1px solid var(--primary-blue-20); border-radius: var(--radius-lg); padding: var(--space-xl); margin: var(--space-xl) 0; }
.checklist-item { display: flex; align-items: flex-start; gap: var(--space-md); padding: var(--space-md) 0; border-bottom: 1px solid var(--primary-blue-10); transition: var(--transition-fast); }
.checklist-item:hover { background: var(--primary-blue-05); margin: 0 calc(-1 * var(--space-md)); padding-left: var(--space-md); padding-right: var(--space-md); }
.checklist-item:last-child { border-bottom: none; }
.checklist-checkbox { width: 20px; height: 20px; border: 2px solid var(--primary-blue); border-radius: 4px; flex-shrink: 0; margin-top: 2px; position: relative; cursor: pointer; transition: var(--transition-fast); }
.checklist-checkbox:hover { background: var(--primary-blue-10); border-color: var(--neon-green); }
.checklist-checkbox.checked { background: var(--neon-green); border-color: var(--neon-green); }
.checklist-checkbox.checked::after { content: '✓'; position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); color: var(--dark-bg); font-weight: bold; }

/* ===============================================
   12. POST TAGS
   =============================================== */
.post-tags { display: flex; flex-wrap: wrap; gap: var(--space-sm); margin: var(--space-2xl) 0; padding: var(--space-xl) 0; border-top: 1px solid var(--primary-blue-20); }
.post-tag { background: var(--card-bg); color: var(--text-secondary); padding: var(--space-xs) var(--space-md); border-radius: var(--radius-full); font-size: 0.8rem; border: 1px solid var(--primary-blue-20); transition: var(--transition-fast); text-decoration: none; }
.post-tag:hover { background: var(--primary-blue-10); border-color: var(--primary-blue); color: var(--primary-blue); transform: translateY(-2px); }

/* ===============================================
   13. FORMULARIOS
   =============================================== */
.form-group { margin-bottom: var(--space-xl); }
.form-label { display: block; margin-bottom: var(--space-sm); font-weight: 500; color: var(--text-primary); font-size: 0.95rem; }
.form-label.required::after { content: ' *'; color: var(--error); }
.form-input, .form-textarea, .form-select { width: 100%; padding: var(--space-md) var(--space-lg); background: var(--card-bg); border: 1px solid var(--primary-blue-20); border-radius: var(--radius-md); color: var(--text-primary); font-size: 0.95rem; transition: var(--transition-fast); font-family: var(--font-primary); }
.form-input:focus, .form-textarea:focus, .form-select:focus { outline: none; border-color: var(--primary-blue); background: var(--surface-bg); box-shadow: 0 0 0 3px var(--primary-blue-10); }
.form-input::placeholder, .form-textarea::placeholder { color: var(--text-muted); }
.form-textarea { min-height: 120px; resize: vertical; }

/* ===============================================
   14. TABLAS GENERALES
   =============================================== */
.table { width: 100%; border-collapse: collapse; margin-bottom: var(--space-xl); }
.table thead { background: var(--surface-bg); border-bottom: 2px solid var(--primary-blue-20); }
.table th { padding: var(--space-md) var(--space-lg); text-align: left; font-weight: 600; color: var(--text-primary); font-size: 0.875rem; text-transform: uppercase; letter-spacing: 0.05em; }
.table td { padding: var(--space-md) var(--space-lg); color: var(--text-secondary); border-bottom: 1px solid var(--primary-blue-10); }
.table tbody tr:hover { background: var(--primary-blue-05); }
.table-responsive { overflow-x: auto; -webkit-overflow-scrolling: touch; }

/* ===============================================
   15. BADGES
   =============================================== */
.badge { display: inline-flex; align-items: center; padding: var(--space-xs) var(--space-sm); border-radius: var(--radius-full); font-size: 0.75rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; }
.badge-primary { background: var(--primary-blue-10); color: var(--primary-blue); }
.badge-success { background: var(--success-bg); color: var(--success); }
.badge-warning { background: var(--warning-bg); color: var(--warning); }
.badge-error { background: var(--error-bg); color: var(--error); }
.badge-info { background: var(--info-bg); color: var(--info); }

/* ===============================================
   16. UTILIDADES
   =============================================== */
.text-center { text-align: center; } .text-left { text-align: left; } .text-right { text-align: right; }
.flex { display: flex; } .flex-col { flex-direction: column; }
.items-center { align-items: center; } .items-start { align-items: flex-start; } .items-end { align-items: flex-end; }
.justify-center { justify-content: center; } .justify-between { justify-content: space-between; } .justify-end { justify-content: flex-end; }
.gap-xs { gap: var(--space-xs); } .gap-sm { gap: var(--space-sm); } .gap-md { gap: var(--space-md); } .gap-lg { gap: var(--space-lg); } .gap-xl { gap: var(--space-xl); }
.m-0 { margin: 0; } .mt-auto { margin-top: auto; } .mb-0 { margin-bottom: 0; } .mb-sm { margin-bottom: var(--space-sm); } .mb-md { margin-bottom: var(--space-md); } .mb-lg { margin-bottom: var(--space-lg); } .mb-xl { margin-bottom: var(--space-xl); }
.p-0 { padding: 0; } .p-sm { padding: var(--space-sm); } .p-md { padding: var(--space-md); } .p-lg { padding: var(--space-lg); } .p-xl { padding: var(--space-xl); }
.hidden { display: none; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.spinner { border: 3px solid var(--primary-blue-20); border-top: 3px solid var(--primary-blue); border-radius: 50%; width: 24px; height: 24px; animation: spin 1s linear infinite; }
@keyframes spin { 0% { transform: rotate(0deg); } 100% { transform: rotate(360deg); } }
.spinner-lg { width: 48px; height: 48px; border-width: 4px; }

/* ===============================================
   17. ANIMACIONES
   =============================================== */
@keyframes fadeIn { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }
@keyframes slideInRight { from { opacity: 0; transform: translateX(20px); } to { opacity: 1; transform: translateX(0); } }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.5; } }
@keyframes glow { 0%, 100% { box-shadow: 0 0 5px var(--neon-green-20); } 50% { box-shadow: 0 0 20px var(--neon-green-20), 0 0 30px var(--neon-green-10); } }
.animate-fade-in { animation: fadeIn 0.5s ease; }
.animate-slide-in-right { animation: slideInRight 0.3s ease; }
.animate-pulse { animation: pulse 2s infinite; }
.animate-glow { animation: glow 2s infinite; }
.hover-glow:hover { box-shadow: var(--shadow-glow); }
.hover-lift:hover { transform: translateY(-4px); }
.hover-scale:hover { transform: scale(1.05); }

/* ===============================================
   18. RESPONSIVE
   =============================================== */
@media (max-width: 1024px) {
    .post-container { max-width: 100%; padding: var(--space-xl); }
}
@media (max-width: 768px) {
    :root { font-size: 14px; }
    .blog-header { padding: var(--space-lg) 0; }
    .blog-nav { flex-direction: column; gap: var(--space-md); text-align: center; padding: 0 var(--space-lg); }
    .post-container { padding: var(--space-lg); }
    .post-featured-image { height: 250px; }
    .post-meta { flex-direction: column; align-items: flex-start; gap: var(--space-md); }
    .error-header { flex-direction: column; align-items: center; text-align: center; }
    .cta-box { padding: var(--space-xl); }
    .card { padding: var(--space-lg); }
    .table-responsive { overflow-x: auto; }
    .ct { font-size: 0.75rem; }
    .ct th, .ct td { padding: 0.45rem 0.55rem; }
}
@media (max-width: 480px) {
    :root { font-size: 13px; }
    .post-container { padding: var(--space-md); }
    .post-title { font-size: 1.75rem; }
    .btn { padding: var(--space-sm) var(--space-lg); font-size: 0.875rem; }
    .btn-lg { padding: var(--space-md) var(--space-xl); font-size: 0.95rem; }
    h1 { font-size: 2rem; } h2 { font-size: 1.5rem; } h3 { font-size: 1.25rem; }
    .error-icon { width: 40px; height: 40px; font-size: 1rem; }
}

/* ===============================================
   19. PRINT
   =============================================== */
@media print {
    body { background: white; color: black; }
    .blog-header, .blog-nav, .cta-box, .btn, .post-tags { display: none; }
    .post-container { max-width: 100%; padding: 0; }
    .post-title, h1, h2, h3, h4, h5, h6 { color: black; -webkit-text-fill-color: black; background: none; }
    .card, .error-card, .warning-box, .tip-box { border: 1px solid #ccc; background: white; }
    a { color: black; text-decoration: underline; }
}

/* ===============================================
   20. ACCESIBILIDAD
   =============================================== */
*:focus-visible { outline: 2px solid var(--neon-green); outline-offset: 2px; }
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; } }
@media (prefers-contrast: high) { :root { --text-secondary: #c0c0c0; --primary-blue: #4d94ff; --neon-green: #66ff99; } }

/* ===============================================
   21. PUBLICIDAD (ADSENSE / MONETIZACIÓN)
   Diseño intencional: sutil, integrado, sin llamar
   la atención pero cumpliendo la política de
   identificación de Google ("Publicidad").
   =============================================== */
.ad-container {
    margin: 2.5rem 0;
    text-align: center;
    position: relative;
    /* Separador visual mínimo — no intrusivo */
    border-top: 1px solid rgba(255,255,255,0.04);
    padding-top: 1.5rem;
}
/* Superior: sin borde, fluye naturalmente tras el excerpt */
.ad-top {
    border-top: none;
    padding-top: 0;
    margin-top: 1.5rem;
    margin-bottom: 2rem;
}
/* Final: margen ajustado antes de los tags */
.ad-bottom {
    margin-bottom: 0;
}
/* Etiqueta "Publicidad" — requerida por política de AdSense */
.ad-label {
    display: block;
    font-size: 0.62rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.14em;
    margin-bottom: 5px;
    opacity: 0.65;
    font-family: var(--font-primary);
    user-select: none;
    pointer-events: none;
}
/* ins de AdSense */
.ad-container ins.adsbygoogle {
    display: block;
    min-height: 50px; /* Evita CLS antes de que cargue el anuncio */
    border-radius: var(--radius-sm);
    overflow: hidden;
}
/* Sin anuncios en impresión */
@media print { .ad-container { display: none !important; } }
/* Móvil: márgenes más compactos */
@media (max-width: 768px) {
    .ad-container { margin: 1.75rem 0; }
    .ad-top { margin-top: 1rem; }
}