:root {
    /* ... (las mismas variables de color de la respuesta anterior) ... */
    --background-color: #f8f9fa;
    --text-color: #212529;
    --primary-color: #007bff;
    --border-color: #dee2e6;
    --code-bg: #e9ecef;
    --tag-added: #28a745;
    --tag-changed: #ffc107;
    --tag-fixed: #dc3545;
    --tag-removed: #6c757d;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    line-height: 1.6;
    background-color: var(--background-color);
    color: var(--text-color);
    margin: 0;
    height: 100vh;
    /* overflow: hidden; */
}

/* --- Layout Principal --- */
.layout-container {
    display: flex;
    height: 100vh;
}

.sidebar {
    flex: 0 0 280px;
    background-color: #fff;
    border-right: 1px solid var(--border-color);
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
}

.content-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow-y: hidden;
}

/* --- Sidebar (Columna Izquierda) --- */
.sidebar h2 {
    margin: 0 0 1rem 0;
    font-size: 1.2rem;
}

#search-box {
    width: 100%;
    padding: 0.6rem;
    font-size: 0.9rem;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    margin-bottom: 1rem;
    box-sizing: border-box;
}

#project-list {
    list-style-type: none;
    padding: 0;
    margin: 0;
    overflow-y: auto;
    flex-grow: 1;
}

#project-list a {
    display: block;
    padding: 0.75rem 1rem;
    text-decoration: none;
    color: var(--text-color);
    border-radius: 12px;
    transition: background-color 0.2s ease;
}

#project-list a:hover {
    background-color: var(--background-color);
}

#project-list a.active {
    background-color: var(--primary-color);
    color: #fff;
    font-weight: 600;
}

/* --- Content Area (Columna Derecha) --- */
#content-header {
    padding: 1rem 2rem;
    border-bottom: 1px solid var(--border-color);
    background-color: #fff;
    flex-shrink: 0;
}

#version-selector {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

#version-selector button {
    font-family: inherit;
    font-size: 0.9rem;
    padding: 0.5rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 20px;
    background-color: transparent;
    cursor: pointer;
    transition: all 0.2s ease;
}

#version-selector button.active {
    background-color: var(--primary-color);
    color: #fff;
    border-color: var(--primary-color);
}

#changelog-content {
    padding: 0.5rem 2rem;
    overflow-y: auto;
    flex-grow: 1;
    scroll-behavior: smooth;
}

.placeholder, .loader {
    color: #6c757d;
    text-align: center;
    margin-top: 2rem;
    font-size: 1.1rem;
}

.content-wrapper {
    display: flex;
    flex-grow: 1;
    overflow: hidden; /* Important for child scrolling */
}

.page-index {
    flex: 0 0 220px; /* Ancho fijo de 220px */
    border-left: 1px solid var(--border-color);
    padding: 2rem 1.5rem;
    overflow-y: auto;
}

.page-index h4 {
    margin-top: 0;
    margin-bottom: 1rem;
    font-size: 0.9rem;
    color: #6c757d;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

#version-index-nav {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

#version-index-nav a {
    text-decoration: none;
    color: #495057;
    font-size: 0.9rem;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    transition: background-color 0.2s ease, color 0.2s ease;
}

#version-index-nav a:hover {
    background-color: var(--background-color);
    color: var(--primary-color);
}

/* --- Estilos del contenido Markdown --- */
#changelog-content h2 { 
    font-size: 1.5rem; 
    border-bottom: 1px solid var(--border-color); 
    padding-bottom: 0; 
    margin-bottom: 0; 
    margin-top: 2rem; 
}

/* Regla base para las etiquetas h3 */
#changelog-content h3 { 
    font-size: 1rem; 
    font-weight: 600; 
    padding: 0.2rem 0.6rem; 
    border-radius: 4px; 
    display: inline-block; 
    margin-top: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--text-color); /* <-- Color de texto seguro por defecto */
}

/* Clases específicas para cada tipo de tag */
#changelog-content h3.tag-added { 
    background-color: var(--tag-added); 
    color: #fff;
}
#changelog-content h3.tag-changed { 
    background-color: var(--tag-changed); 
    color: #212529; /* <-- Texto oscuro para fondo claro */
}
#changelog-content h3.tag-fixed { 
    background-color: var(--tag-fixed); 
    color: #fff;
}
#changelog-content h3.tag-removed { 
    background-color: var(--tag-removed); 
    color: #fff;
}
#changelog-content ul { padding-left: 20px; }
#changelog-content li { margin-bottom: 0.5rem; }
#changelog-content code { background-color: var(--code-bg); padding: 0.2em 0.4em; font-size: 85%; border-radius: 3px; }

/* ... (todo el CSS anterior permanece igual) ... */

/* --- Estilos del contenido Markdown --- */
#changelog-content h2 { 
    font-size: 1.5rem; 
    border-bottom: 1px solid var(--border-color); 
    padding-bottom: 0; 
    margin-bottom: 0; 
    margin-top: 2rem; 
}

/* ... (el resto de estilos de markdown h3, ul, li, etc. no cambia) ... */
#changelog-content h3.tag-removed { 
    background-color: var(--tag-removed); 
    color: #fff;
}
#changelog-content ul { padding-left: 20px; }
#changelog-content li { margin-bottom: 0.5rem; }
#changelog-content code { background-color: var(--code-bg); padding: 0.2em 0.4em; font-size: 85%; border-radius: 3px; }

/* --- Footer de la Sidebar --- */
.sidebar-footer {
    margin-top: auto; /* Magia para empujarlo al fondo */
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

#help-button {
    width: 100%;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    font-family: inherit;
    font-size: 0.9rem;
    font-weight: 500;
    text-align: left;
    color: #495057;
    background-color: transparent;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    transition: background-color 0.2s ease, color 0.2s ease;
}

#help-button:hover {
    background-color: var(--background-color);
    color: var(--primary-color);
}

/* --- Estilos del Modal --- */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.6);
    display: none; /* Oculto por defecto */
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.modal-overlay.visible {
    display: flex; /* Se muestra con JS */
    opacity: 1;
}

.modal-content {
    background-color: #fff;
    padding: 2rem;
    border-radius: 8px;
    max-width: 600px;
    width: 90%;
    position: relative;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    transform: scale(0.95);
    transition: transform 0.3s ease;
}

.modal-overlay.visible .modal-content {
    transform: scale(1);
}

.modal-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    font-size: 1.5rem;
    font-weight: bold;
    color: #6c757d;
    background: none;
    border: none;
    cursor: pointer;
    line-height: 1;
}

.modal-close:hover {
    color: #212529;
}

.modal-content h2 {
    margin-top: 0;
    margin-bottom: 1rem;
}

.modal-content h3 {
    margin-top: 1.5rem;
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.modal-content p, .modal-content ul {
    color: #495057;
}

.modal-content a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
}

.modal-content a:hover {
    text-decoration: underline;
}

.modal-content .prompt-heading {
    margin-top: 2rem;
    border-top: 1px solid var(--border-color);
    padding-top: 1.5rem;
}

.modal-content details {
    margin-top: 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 0.5rem 1rem;
}

.modal-content summary {
    font-weight: 600;
    cursor: pointer;
    color: var(--primary-color);
    padding: 0.5rem 0;
}

.prompt-container {
    position: relative;
    margin-top: 1rem;
}

#copy-prompt-button {
    position: absolute;
    top: 8px;
    right: 8px;
    background-color: #e9ecef;
    color: #495057;
    border: 1px solid #ced4da;
    padding: 0.25rem 0.75rem;
    font-size: 0.8rem;
    font-family: inherit;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.2s ease;
}

#copy-prompt-button:hover {
    background-color: #ced4da;
}

#copy-prompt-button.copied {
    background-color: var(--tag-added);
    color: #fff;
    border-color: var(--tag-added);
}

.modal-content pre {
    background-color: var(--background-color);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 1rem;
    padding-top: 2.5rem; /* Espacio para el botón de copiar */
    max-height: 250px;
    overflow-y: auto;
    white-space: pre-wrap; /* Ajusta líneas largas */
    word-break: break-word;
}

.modal-content code {
    font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, Courier, monospace;
    font-size: 0.85rem;
    color: var(--text-color);
}