:root {
    /* Colores Base */
    --bg-color: #f6f5ef;
    --bg-alt: #ffffff;
    --text-main: #111111;
    --text-muted: #555555;
    --border-color: #111111;
    
    /* Acentos Vibrantes Controlados */
    --rosa-mexicano: #e0165c;
    --verde-cdmx: #006b3f;
    --amarillo-calle: #ffcc00;
    --terracota: #cc5500;
    --azul-electrico: #2563eb;
    --verde-esmeralda: #006b3f;
    --verde-lima: #bfff00;
    --verde-mexicano: #006b3f;
    
    /* Tipografía */
    --font-poster: 'Anton', sans-serif;
    --font-display: 'Space Grotesk', sans-serif;
    --font-body: 'Inter', sans-serif;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

:focus-visible {
    outline: 3px dashed var(--rosa-mexicano);
    outline-offset: 4px;
}

body {
    background-color: var(--bg-color);
    color: var(--text-main);
    font-family: var(--font-body);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    background-image: radial-gradient(rgba(0,0,0,0.05) 1px, transparent 1px);
    background-size: 24px 24px;
}

/* Sticky Nav Wrapper */
.nav-sticky-wrap {
    position: sticky;
    top: 0;
    z-index: 100;
    background-color: var(--bg-color);
    background-image: radial-gradient(rgba(0,0,0,0.05) 1px, transparent 1px);
    background-size: 24px 24px;
    transition: border-bottom 0.2s, box-shadow 0.2s;
}

.nav-sticky-wrap.scrolled {
    border-bottom: 3px solid var(--border-color);
    box-shadow: 0 3px 0 var(--amarillo-calle);
}

[data-theme="dark"] .nav-sticky-wrap {
    background-image: radial-gradient(rgba(255,255,255,0.04) 1px, transparent 1px);
}

/* Navbar */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.2rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
}

.nav-brand {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-main);
    text-decoration: none;
    letter-spacing: -0.02em;
    transition: color 0.2s;
}

.nav-brand:hover { color: var(--amarillo-calle); }

.menu-toggle {
    display: flex;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-main);
}

/* Mobile menu — animated slide + fade */
.nav-links {
    visibility: hidden;
    opacity: 0;
    transform: translateY(-6px);
    pointer-events: none;
    transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s;
    position: absolute;
    top: 100%;
    left: 2rem;
    right: 2rem;
    background: var(--bg-alt);
    border: 3px solid var(--border-color);
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    align-items: center;
    box-shadow: 6px 6px 0 var(--border-color);
    z-index: 50;
}

.nav-links.active {
    visibility: visible;
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

@media(min-width: 768px) {
    .menu-toggle { display: none; }
    .nav-links {
        visibility: visible;
        opacity: 1;
        transform: none;
        pointer-events: auto;
        transition: none;
        position: static;
        flex-direction: row;
        background: transparent;
        border: none;
        padding: 0;
        box-shadow: none;
    }
}

.nav-item {
    font-family: var(--font-body);
    font-weight: 500;
    font-size: 0.95rem;
    color: var(--text-muted);
    text-decoration: none;
    transition: color 0.2s;
}

.nav-item:hover { color: var(--text-main); }

.nav-item.active {
    color: var(--text-main);
    font-weight: 700;
    text-decoration: underline;
    text-underline-offset: 4px;
    text-decoration-thickness: 2px;
}

.btn-nav {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 0.9rem;
    text-transform: uppercase;
    text-decoration: none;
    padding: 0.6rem 1.2rem;
    background: var(--text-main);
    color: #fff;
    border: 2px solid var(--border-color);
    transition: all 0.2s ease;
}

.btn-nav:hover {
    background: var(--amarillo-calle);
    color: var(--text-main);
    transform: translate(-2px, -2px);
    box-shadow: 4px 4px 0 var(--border-color);
}

/* Footer */
footer { text-align: center; padding: 3rem 2rem; font-family: var(--font-body); background: transparent; border-top: 4px solid var(--amarillo-calle); }
.footer-content { max-width: 1200px; margin: 0 auto; display: flex; flex-direction: column; gap: 1.5rem; align-items: center; }
.back-to-top { font-family: var(--font-display); font-weight: 700; color: var(--text-main); text-decoration: none; text-transform: uppercase; font-size: 0.85rem; padding: 0.5rem 1.2rem; border: 2px solid var(--border-color); transition: background 0.2s, transform 0.2s; }
.back-to-top:hover { background: var(--amarillo-calle); transform: translate(-2px, -2px); }
.footer-copy { color: #888; font-size: 0.9rem; }

/* =====================================================
   SKELETON LOADING
   ===================================================== */
@keyframes shimmer {
    0%   { background-position: -400px 0; }
    100% { background-position:  400px 0; }
}

.skeleton-block {
    display: block;
    background: linear-gradient(90deg,
        rgba(0,0,0,0.06) 25%,
        rgba(0,0,0,0.12) 50%,
        rgba(0,0,0,0.06) 75%
    );
    background-size: 400px 100%;
    animation: shimmer 1.4s infinite linear;
    border-radius: 2px;
}

.skeleton-card {
    pointer-events: none;
    user-select: none;
}

/* =====================================================
   DARK MODE
   ===================================================== */
[data-theme="dark"] {
    --bg-color: #121212;
    --bg-alt: #1e1e1e;
    --text-main: #f0ede4;
    --text-muted: #888888;
    --border-color: #f0ede4;
}

[data-theme="dark"] body {
    background-image: radial-gradient(rgba(255,255,255,0.04) 1px, transparent 1px);
}

[data-theme="dark"] .ticker-wrap {
    background: #2a2a2a;
}

/* Elementos con bg: text-main → texto oscuro en dark (fondo crema) */
[data-theme="dark"] .btn-nav {
    color: var(--bg-color);
}

/* Hovers con fondo de acento (amarillo, verde-lima) → texto siempre #111 */
[data-theme="dark"] .btn-nav:hover,
[data-theme="dark"] .back-to-top:hover {
    color: #111111;
}

/* Skeleton loading: invertir opacidades para fondos oscuros */
[data-theme="dark"] .skeleton-block {
    background: linear-gradient(90deg,
        rgba(255,255,255,0.05) 25%,
        rgba(255,255,255,0.10) 50%,
        rgba(255,255,255,0.05) 75%
    );
    background-size: 400px 100%;
}

/* Empty state: borde casi invisible en dark */
[data-theme="dark"] .empty-state {
    border-color: rgba(255,255,255,0.15);
}

/* Nav link activo */
[data-theme="dark"] .nav-links {
    background: var(--bg-alt);
}


/* Estado vacío del blog */
.empty-state {
    grid-column: 1 / -1;
    text-align: center;
    padding: 4rem 2rem;
    border: 2px dashed rgba(0,0,0,0.15);
    color: var(--text-muted);
    font-family: var(--font-display);
    font-weight: 700;
    text-transform: uppercase;
    font-size: 1rem;
    letter-spacing: 0.05em;
}