/* ---------------------------------- */
/* VARIABLES DE DISEÑO       */
/* ---------------------------------- */
:root {
    --primary-color: #5533FF;  /* Un púrpura vibrante (n8n) */
    --secondary-color: #1ABC9C; /* Verde (n8n) */
    --dark-bg: #1A1D2F;       /* Un azul/negro "tech" para el sidebar */
    --light-bg: #F8F9FA;      /* Un gris muy claro para el contenido */
    --text-dark: #212529;
    --text-light: #E0E5F0;    /* Un blanco suave para el sidebar */
    --text-gray: #6C757D;
    --border-color: #E0E0E0;
    
    --font-heading: 'Poppins', sans-serif;
    --font-body: 'Inter', sans-serif;
    
    --shadow-small: 0 2px 4px rgba(0,0,0,0.05);
    --shadow-medium: 0 4px 12px rgba(0,0,0,0.08);
    --border-radius: 12px;
}

/* ---------------------------------- */
/* RESETS GLOBALES         */
/* ---------------------------------- */
body {
    font-family: var(--font-body);
    margin: 0;
    padding: 0;
    background-color: var(--light-bg);
    color: var(--text-dark);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}

* {
    box-sizing: border-box;
}

/* ---------------------------------- */
/* TIPOGRAFÍA              */
/* ---------------------------------- */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    color: var(--text-dark);
    margin-top: 1.5em;
    margin-bottom: 0.5em;
}

h1 { font-size: 2.8em; line-height: 1.2; }
h2 { 
    font-size: 2.1em; 
    border-bottom: 3px solid var(--border-color); 
    padding-bottom: 10px;
    margin-top: 2em;
}
h3 { font-size: 1.5em; }

p {
    margin-bottom: 1.2em;
}
p.subtitle {
    font-size: 1.2em;
    color: var(--text-gray);
    font-weight: 400;
    margin-top: -10px;
}

a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 700;
    transition: color 0.2s ease;
}
a:hover {
    color: var(--secondary-color);
    text-decoration: none;
}

hr {
    border: 0;
    height: 1px;
    background: var(--border-color);
    margin: 40px 0;
}

/* ---------------------------------- */
/* ESTRUCTURA DE LA APP        */
/* ---------------------------------- */
.app-container {
    display: flex;
    min-height: 100vh;
}

/* ---------------------------------- */
/* BARRA LATERAL (SIDEBAR)   */
/* ---------------------------------- */
.sidebar {
    width: 280px;
    background-color: var(--dark-bg);
    color: var(--text-light);
    padding: 25px;
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
}
.sidebar-header {
    padding-bottom: 15px;
    margin-bottom: 20px;
}
.sidebar-header h3 {
    color: #ffffff;
    margin: 0;
    font-size: 1.4em;
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--primary-color);
}
.sidebar-header h3 i {
    color: var(--secondary-color);
}

.sidebar ul {
    list-style: none;
    padding: 0;
    margin: 0;
}
.sidebar ul li {
    margin-bottom: 8px;
}
.sidebar .nav-link {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 12px 18px;
    border-radius: 8px;
    color: var(--text-light);
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 1.05em;
    text-decoration: none;
    transition: background-color 0.2s ease, color 0.2s ease;
}
.sidebar .nav-link i {
    color: var(--text-gray);
    transition: color 0.2s ease;
}
.sidebar .nav-link:hover {
    background-color: rgba(255, 255, 255, 0.05);
    color: #ffffff;
}
.sidebar .nav-link:hover i {
    color: var(--secondary-color);
}
.sidebar .nav-link.active {
    background-color: var(--secondary-color);
    color: #ffffff;
    box-shadow: 0 4px 10px rgba(26, 188, 156, 0.3);
}
.sidebar .nav-link.active i {
    color: #ffffff;
}

/* ---------------------------------- */
/* CONTENIDO PRINCIPAL       */
/* ---------------------------------- */
.content {
    flex-grow: 1;
    padding: 50px;
    max-width: 1000px;
    margin: 0 auto;
}

.content-section {
    display: none;
    animation: fadeIn 0.4s ease-out;
}
.content-section.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(15px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ---------------------------------- */
/* COMPONENTES (CARDS, ETC)  */
/* ---------------------------------- */

/* Banner de la página de inicio */
.visual-banner {
    width: 100%;
    padding: 40px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: var(--border-radius);
    color: #ffffff;
    margin-bottom: 40px;
}
.visual-banner h1 {
    color: #ffffff;
    margin-top: 0;
}
.visual-banner p {
    font-size: 1.2em;
    opacity: 0.9;
}

/* Tarjetas (Cards) */
.columns-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
    margin-top: 20px;
}
.card-deck {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-top: 20px;
}
.card {
    background: #ffffff;
    padding: 25px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-medium);
    border: 1px solid var(--border-color);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.1);
}
.card h3 {
    margin-top: 0.5em;
    color: var(--primary-color);
}
.card .card-icon {
    font-size: 2em;
    color: var(--secondary-color);
}

/* Listas */
.project-list {
    list-style: none;
    padding-left: 0;
}
.project-list li {
    font-size: 1.1em;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 10px;
}
.project-list li i {
    color: var(--secondary-color);
    font-size: 1.2em;
}

/* Placeholders visuales */
.visual-placeholder {
    width: 100%;
    background-color: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 40px;
    text-align: center;
    color: var(--text-gray);
    margin: 20px 0;
    font-style: italic;
    box-shadow: var(--shadow-small);
}
.visual-placeholder.small {
    width: 70%;
    margin-left: auto;
    margin-right: auto;
}

/* Bloques de Código */
pre {
    background-color: #2d2d2d;
    color: #f8f8f2;
    padding: 20px;
    border-radius: 8px;
    overflow-x: auto;
    font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, Courier, monospace;
    font-size: 0.95em;
    line-height: 1.5;
}
code {
    background-color: rgba(85, 51, 255, 0.08); /* Fondo púrpura claro */
    color: var(--primary-color);
    padding: 3px 6px;
    border-radius: 5px;
    font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, Courier, monospace;
    font-size: 0.9em;
}
pre code {
    background: none;
    padding: 0;
    color: inherit;
    font-size: inherit;
}

/* Citas (Blockquotes) */
blockquote {
    border-left: 5px solid var(--primary-color);
    margin: 20px 0;
    padding: 15px 25px;
    background-color: rgba(85, 51, 255, 0.03); /* Fondo púrpura muy claro */
    border-radius: 0 var(--border-radius) var(--border-radius) 0;
}
blockquote strong {
    color: var(--primary-color);
}