/* =============================================================================
   MICROBLOG · feed estilo Tumblr / Threads, página de hilo, versión incrustable y menú del botón «+»
   -----------------------------------------------------------------------------
   Todo usa las variables de la paleta (--bg, --bg-soft, --bg-card, --fg, --fg-soft, --fg-dim, --accent,
   --accent-soft, --line) y de las tipografías (--serif, --sans), así que cambia solo con los ajustes de Diseño.
   Índice: 1. Sección · 2. Hilo y entradas · 3. Contenido · 4. Acciones · 5. Niveles de destacado
           6. Ventanas (imagen e incrustar) · 7. Páginas propias · 8. Menú del botón «+»
   ============================================================================= */

.mb-section,
.mb-page {
    --mb-width: 560px;
    --mb-radius: 16px;
    --mb-thread-line: color-mix(in srgb, var(--fg) 24%, transparent);
}

/* 1. SECCIÓN ------------------------------------------------------------------ */
.mb-section {
    position: relative;
    padding: clamp(4rem, 10vh, 7rem) 1rem;
    border-top: 1px solid var(--line);
    background: linear-gradient(180deg, var(--bg) 0%, var(--bg-soft) 100%);
}
.mb-section__inner { max-width: var(--mb-width); margin: 0 auto; }
.mb-section__head { text-align: center; margin-bottom: 2.2rem; }
.mb-section__eyebrow {
    display: block; margin-bottom: .6rem;
    font-family: var(--sans); font-size: .72rem; font-weight: 500; letter-spacing: .28em; text-transform: uppercase; color: var(--accent);
}
.mb-section__title { font-family: var(--serif); font-size: clamp(1.9rem, 5vw, 2.6rem); font-weight: 500; line-height: 1.15; color: var(--fg); }

.mb-feed { display: flex; flex-direction: column; gap: 1.1rem; }
.mb-feed--anim .mb-thread:not(.is-in) { opacity: 0; transform: translateY(18px); }
.mb-feed--anim .mb-thread { transition: opacity .6s var(--ease-out, ease), transform .6s var(--ease-out, ease); }

.mb-loadmore { margin-top: 1.6rem; text-align: center; }
.mb-loadmore__btn {
    padding: .8rem 1.8rem; border: 1px solid var(--accent); border-radius: 999px;
    font-family: var(--sans); font-size: .82rem; font-weight: 500; letter-spacing: .08em; color: var(--accent);
    transition: background .25s ease, color .25s ease, transform .25s ease;
}
.mb-loadmore__btn:hover { background: var(--accent); color: var(--bg); transform: translateY(-2px); }
.mb-loadmore__btn:disabled { opacity: .55; cursor: wait; transform: none; }
.mb-loadmore__error { margin-top: .8rem; font-size: .85rem; color: var(--fg-soft); }

/* 2. HILO Y ENTRADAS ------------------------------------------------------------ */
.mb-thread {
    position: relative; overflow: hidden;
    padding: 1.15rem 1.15rem 1.05rem;
    border: 1px solid var(--line); border-radius: var(--mb-radius);
    background: var(--bg-card); color: var(--fg);
    font-family: var(--sans);
}
.mb-entry { position: relative; display: grid; grid-template-columns: 44px minmax(0, 1fr); column-gap: .85rem; padding-bottom: 1.15rem; }
.mb-entry.is-last { padding-bottom: 0; }
.mb-entry:target .mb-main { animation: mb-target 2.2s ease; }
.mb-rail { position: relative; }
.mb-avatar { width: 44px; height: 44px; border-radius: 50%; object-fit: cover; background: var(--bg-soft); box-shadow: 0 0 0 1px var(--line); }
.mb-entry--reply .mb-avatar { width: 36px; height: 36px; margin-left: 4px; }
/* Línea del hilo que une una entrada con la siguiente, como en Threads. */
.mb-entry:not(.is-last) .mb-rail::after {
    content: ''; position: absolute; left: 50%; top: 52px; bottom: 4px; width: 2px; transform: translateX(-50%);
    border-radius: 2px; background: var(--mb-thread-line);
}
.mb-entry--reply:not(.is-last) .mb-rail::after { top: 44px; }

.mb-main { min-width: 0; }
.mb-head { display: flex; flex-wrap: wrap; align-items: baseline; gap: .1rem .55rem; margin-bottom: .35rem; }
.mb-name { font-family: var(--sans); font-size: .95rem; font-weight: 600; color: var(--fg); }
.mb-handle, .mb-date { font-size: .8rem; color: var(--fg-dim); text-decoration: none; }
.mb-date:hover { color: var(--accent); }
.mb-flags { display: inline-flex; align-items: center; gap: .5rem; margin-left: auto; }
.mb-pin { display: inline-flex; align-items: center; gap: .25rem; font-size: .66rem; font-weight: 600; letter-spacing: .06em; text-transform: uppercase; color: var(--fg-soft); }
.mb-pin svg { width: 13px; height: 13px; color: var(--accent); }
.mb-badge {
    display: inline-flex; align-items: center; gap: .3rem;
    padding: .18rem .6rem; border-radius: 999px; font-size: .68rem; font-weight: 600; letter-spacing: .06em; text-transform: uppercase;
}
.mb-badge svg { width: 13px; height: 13px; }

.mb-more-replies {
    display: block; margin: 1rem 0 0 calc(44px + .85rem); font-size: .82rem; font-weight: 500; color: var(--accent); text-decoration: none;
}
.mb-more-replies:hover { text-decoration: underline; }

/* 3. CONTENIDO ------------------------------------------------------------------ */
.mb-body { font-size: 1rem; line-height: 1.65; color: var(--fg); overflow-wrap: anywhere; }
.mb-body > * + * { margin-top: .75rem; }
.mb-text p + p { margin-top: .7rem; }
.mb-text a, .mb-quote a { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; text-decoration-thickness: 1px; }
.mb-text a:hover, .mb-quote a:hover { text-decoration-thickness: 2px; }

.mb-quote {
    position: relative; padding: 1rem 1.1rem 1rem 1.3rem;
    border-left: 3px solid var(--accent); border-radius: 0 12px 12px 0;
    background: var(--accent-soft); font-family: var(--serif); font-size: 1.18rem; font-style: italic; line-height: 1.5; color: var(--fg);
}
.mb-quote__mark { position: absolute; top: -.35rem; right: .8rem; font-size: 3.6rem; line-height: 1; color: var(--accent); opacity: .35; font-style: normal; }
.mb-quote p + p { margin-top: .5rem; }
.mb-quote footer { margin-top: .6rem; font-family: var(--sans); font-size: .8rem; font-style: normal; color: var(--fg-soft); }
.mb-quote cite { font-style: normal; }

.mb-images { display: grid; gap: 4px; overflow: hidden; border-radius: 12px; }
.mb-image { display: block; overflow: hidden; background: var(--bg-soft); cursor: zoom-in; }
.mb-image img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s var(--ease-out, ease); }
.mb-image:hover img { transform: scale(1.03); }
.mb-images--1 .mb-image img { height: auto; max-height: 620px; }
.mb-images--2, .mb-images--4 { grid-template-columns: 1fr 1fr; }
.mb-images--2 .mb-image, .mb-images--3 .mb-image, .mb-images--4 .mb-image { aspect-ratio: 1; }
.mb-images--3 { grid-template-columns: 1.6fr 1fr; grid-template-rows: 1fr 1fr; }
.mb-images--3 .mb-image:first-child { grid-row: span 2; aspect-ratio: auto; }

.mb-link {
    display: flex; align-items: center; gap: .8rem; padding: .75rem .9rem;
    border: 1px solid var(--line); border-radius: 12px; background: var(--bg-soft); color: var(--fg); text-decoration: none;
    transition: border-color .25s ease, transform .25s ease;
}
.mb-link:hover { border-color: var(--accent); transform: translateY(-1px); }
.mb-link__icon { display: grid; place-items: center; flex: 0 0 38px; height: 38px; border-radius: 10px; background: var(--accent-soft); color: var(--accent); }
.mb-link__icon svg { width: 19px; height: 19px; }
.mb-link__text { display: flex; flex-direction: column; min-width: 0; }
.mb-link__text strong { font-size: .9rem; font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.mb-link__text small { font-size: .74rem; color: var(--fg-dim); }

/* 4. ACCIONES ------------------------------------------------------------------- */
.mb-actions { display: flex; align-items: center; gap: .2rem; margin: .65rem 0 0 -.5rem; }
.mb-action {
    display: inline-flex; align-items: center; gap: .4rem; min-height: 34px; padding: .3rem .65rem; border-radius: 999px;
    font-family: var(--sans); font-size: .82rem; color: var(--fg-soft); text-decoration: none;
    transition: background .2s ease, color .2s ease, transform .2s ease;
}
.mb-action svg { width: 18px; height: 18px; }
.mb-action:hover { background: var(--accent-soft); color: var(--accent); }
.mb-action:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.mb-heart.is-liked { color: var(--accent); }
.mb-heart.is-pulse { animation: mb-pulse .5s var(--ease-out, ease); }
.mb-heart:disabled { opacity: .6; cursor: wait; }

/* 5. NIVELES DE DESTACADO -------------------------------------------------------- */
/* Nivel 1 · Destacado: franja lateral y velo de color. */
.mb-thread--l1 {
    border-color: color-mix(in srgb, var(--accent) 45%, var(--line));
    background: linear-gradient(135deg, var(--accent-soft), transparent 60%), var(--bg-card);
    box-shadow: inset 4px 0 0 var(--accent);
}
.mb-badge--1 { color: var(--accent); background: var(--accent-soft); border: 1px solid color-mix(in srgb, var(--accent) 40%, transparent); }

/* Nivel 2 · Súper destacado: borde luminoso que fluye, brillo que barre la tarjeta y letra algo mayor. */
.mb-thread--l2 {
    border: 2px solid transparent;
    background:
        linear-gradient(var(--bg-card), var(--bg-card)) padding-box,
        linear-gradient(115deg, var(--accent), color-mix(in srgb, var(--accent) 12%, transparent) 30%, var(--accent) 55%, color-mix(in srgb, var(--accent) 12%, transparent) 80%, var(--accent)) border-box;
    background-size: 100% 100%, 300% 300%;
    box-shadow: 0 0 0 1px var(--accent-soft), 0 22px 60px -22px var(--accent);
    animation: mb-borderflow 7s linear infinite;
}
.mb-thread--l2 .mb-body { font-size: 1.08rem; }
.mb-thread--l2 .mb-name { color: var(--accent); }
.mb-thread--l2 .mb-avatar { box-shadow: 0 0 0 2px var(--bg-card), 0 0 0 4px var(--accent); }
.mb-badge--2 { color: var(--bg); background: linear-gradient(135deg, var(--accent), color-mix(in srgb, var(--accent) 55%, #fff)); }
.mb-thread__shine {
    position: absolute; inset: 0; z-index: 0; pointer-events: none;
    background: linear-gradient(105deg, transparent 38%, color-mix(in srgb, var(--accent) 16%, transparent) 50%, transparent 62%);
    transform: translateX(-120%); animation: mb-shine 6.5s ease-in-out infinite;
}
.mb-thread--l2 > .mb-entry, .mb-thread--l2 > .mb-more-replies { position: relative; z-index: 1; }

@keyframes mb-borderflow { 0% { background-position: 0 0, 0% 50%; } 100% { background-position: 0 0, 300% 50%; } }
@keyframes mb-shine { 0%, 55% { transform: translateX(-120%); } 85%, 100% { transform: translateX(120%); } }
@keyframes mb-pulse { 0% { transform: scale(1); } 40% { transform: scale(1.3); } 100% { transform: scale(1); } }
@keyframes mb-target { 0%, 60% { background: var(--accent-soft); } 100% { background: transparent; } }

/* 6. VENTANAS: imagen ampliada e incrustar --------------------------------------- */
.mb-lightbox {
    position: fixed; inset: 0; z-index: 3000; display: grid; place-items: center; padding: 0;
    background: rgba(0, 0, 0, .96); opacity: 0; transition: opacity .25s ease; overscroll-behavior: contain;
}
.mb-lightbox.is-open { opacity: 1; }
html.mb-lightbox-open { overflow: hidden; }
/* La imagen ocupa toda la pantalla (sin recortarse) y se adapta al tamaño y a la orientación. */
.mb-lightbox__img { width: 100vw; height: 100vh; height: 100dvh; object-fit: contain; user-select: none; -webkit-user-drag: none; }
.mb-lightbox button {
    position: absolute; display: grid; place-items: center; width: 46px; height: 46px; border-radius: 50%;
    background: rgba(0, 0, 0, .45); backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px);
    color: #fff; font-size: 1.7rem; line-height: 1; transition: background .2s ease;
}
.mb-lightbox button:hover { background: rgba(255, 255, 255, .24); }
.mb-lightbox button:focus-visible { outline: 2px solid #fff; outline-offset: 2px; }
.mb-lightbox button svg { width: 20px; height: 20px; }
.mb-lightbox__bar { position: absolute; top: max(14px, env(safe-area-inset-top)); right: max(14px, env(safe-area-inset-right)); display: flex; gap: .55rem; }
.mb-lightbox__bar button { position: static; }
.mb-lightbox__prev { left: max(14px, env(safe-area-inset-left)); top: 50%; transform: translateY(-50%); }
.mb-lightbox__next { right: max(14px, env(safe-area-inset-right)); top: 50%; transform: translateY(-50%); }
.mb-lightbox[data-single] .mb-lightbox__prev, .mb-lightbox[data-single] .mb-lightbox__next { display: none; }
.mb-lightbox__caption {
    position: absolute; left: 0; right: 0; bottom: 0; display: grid; justify-items: center; gap: .2rem;
    padding: 2.5rem 1rem max(1rem, env(safe-area-inset-bottom)); pointer-events: none;
    background: linear-gradient(0deg, rgba(0, 0, 0, .6), transparent);
    color: #fff; font: .85rem/1.4 var(--sans, system-ui, sans-serif); text-align: center;
}
.mb-lightbox__counter { font-weight: 600; letter-spacing: .08em; }
.mb-lightbox__alt { max-width: 70ch; color: rgba(255, 255, 255, .8); }
.mb-lightbox__counter:empty, .mb-lightbox__alt:empty { display: none; }
.mb-lightbox__caption:not(:has(:not(:empty))) { display: none; }

.mb-dialog-scrim { position: fixed; inset: 0; z-index: 3000; display: grid; place-items: center; padding: 1rem; background: rgba(0, 0, 0, .6); backdrop-filter: blur(5px); }
.mb-dialog {
    width: min(520px, 100%); padding: 1.3rem; border: 1px solid var(--line); border-radius: var(--mb-radius, 16px);
    background: var(--bg-card); color: var(--fg); font-family: var(--sans); box-shadow: 0 30px 80px #0009;
}
.mb-dialog h3 { margin-bottom: .35rem; font-size: 1.15rem; }
.mb-dialog p { margin-bottom: .8rem; font-size: .85rem; color: var(--fg-soft); }
.mb-dialog textarea {
    width: 100%; min-height: 120px; padding: .75rem; border: 1px solid var(--line); border-radius: 10px;
    background: var(--bg-soft); color: var(--fg); font: .78rem/1.5 'Roboto Mono', ui-monospace, monospace; resize: vertical;
}
.mb-dialog__actions { display: flex; justify-content: flex-end; gap: .6rem; margin-top: .9rem; }
.mb-dialog__actions button { padding: .6rem 1.2rem; border: 1px solid var(--line); border-radius: 999px; font-size: .82rem; font-weight: 500; color: var(--fg); }
.mb-dialog__actions .is-primary { border-color: var(--accent); background: var(--accent); color: var(--bg); }
.mb-toast {
    position: fixed; left: 50%; bottom: 96px; z-index: 3100; transform: translate(-50%, 12px); padding: .6rem 1.1rem; border-radius: 999px;
    background: var(--fg); color: var(--bg); font: 500 .82rem var(--sans); opacity: 0; pointer-events: none; transition: opacity .25s ease, transform .25s ease;
}
.mb-toast.is-visible { opacity: 1; transform: translate(-50%, 0); }

/* 7. PÁGINAS PROPIAS: hilo permanente y versión incrustable -------------------------- */
.mb-permalink { max-width: var(--mb-width); margin: 0 auto; padding: clamp(5.5rem, 12vh, 7rem) 1rem 3rem; }
.mb-empty { padding: 2rem 0; text-align: center; color: var(--fg-soft); }
.mb-empty a { color: var(--accent); }
.mb-page--embed { min-width: 0; background: var(--bg); }
.mb-embed { max-width: var(--mb-width); margin: 0 auto; padding: .5rem; }
.mb-embed__source { display: block; margin-top: .5rem; text-align: right; font: .74rem var(--sans); color: var(--fg-dim); text-decoration: none; }
.mb-embed__source:hover { color: var(--accent); }

@media (max-width: 768px) {
    .mb-section { padding-left: .75rem; padding-right: .75rem; }
    .mb-thread { padding: 1rem .9rem .9rem; }
    .mb-entry { grid-template-columns: 38px minmax(0, 1fr); column-gap: .7rem; }
    .mb-avatar { width: 38px; height: 38px; }
    .mb-entry--reply .mb-avatar { width: 32px; height: 32px; margin-left: 3px; }
    .mb-entry:not(.is-last) .mb-rail::after { top: 46px; }
    .mb-more-replies { margin-left: calc(38px + .7rem); }
}

@media (prefers-reduced-motion: reduce) {
    .mb-thread--l2, .mb-thread__shine, .mb-heart.is-pulse, .mb-entry:target .mb-main { animation: none; }
    .mb-feed--anim .mb-thread { transition: none; }
}