:root {
            --primary-color: #60a5fa;
            --primary-hover: #3b82f6;
            --text-main: #f3f4f6;
            --text-muted: #9ca3af;
            --bg-body: #0f172a;
            --bg-card: #1e293b;
            --border-color: #334155;
            --accent-bg: #1e3a8a;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, Roboto, sans-serif;
            line-height: 1.6;
            margin: 0;
            padding: 0;
            background-color: var(--bg-body);
            color: var(--text-main);
            -webkit-font-smoothing: antialiased;
        }

        .nav-rapida {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 15px;
            padding: 15px;
            background-color: var(--bg-card);
            border-bottom: 1px solid var(--border-color);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
        }

        .btn-nav {
            color: var(--text-main);
            text-decoration: none;
            font-weight: 600;
            font-size: 0.95em;
            padding: 8px 18px;
            border-radius: 8px;
            background-color: var(--border-color);
            transition: background-color 0.2s ease, transform 0.1s ease;
        }

        .btn-nav:hover {
            background-color: var(--primary-hover);
            color: #ffffff;
            transform: translateY(-1px);
        }

        .container {
            width: 90%;
            max-width: 1000px;
            margin: 40px auto;
            padding: 40px;
            background-color: var(--bg-card);
            box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.3), 0 10px 10px -5px rgba(0, 0, 0, 0.3);
            border-radius: 16px;
            border: 1px solid var(--border-color);
        }

        h1 {
            color: #ffffff;
            text-align: center;
            font-size: 2.4em;
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 50px;
            letter-spacing: -0.02em;
            position: relative;
            padding-bottom: 20px;
        }

        h1::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 4px;
            background: linear-gradient(90deg, var(--primary-color), var(--primary-hover));
            border-radius: 2px;
        }

        h2 {
            font-size: 1.8em;
            color: var(--primary-color);
            margin-top: 60px;
            margin-bottom: 30px;
            font-weight: 700;
            letter-spacing: -0.01em;
            border-bottom: 2px solid var(--border-color);
            padding-bottom: 8px;
            scroll-margin-top: 80px;
        }

        /* --- Barra de Filtros Dinámicos (Optimizada sin Año) --- */
        .seccion-filtros {
            background-color: #111827;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 20px;
            margin-bottom: 35px;
            display: flex;
            align-items: center;
        }

        .filtro-grupo {
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 6px;
        }

        .filtro-grupo label {
            font-size: 0.85em;
            font-weight: 600;
            color: var(--text-muted);
            text-transform: uppercase;
            letter-spacing: 0.05em;
        }

        .filtro-control {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            color: var(--text-main);
            padding: 12px 14px;
            border-radius: 8px;
            font-size: 0.95em;
            outline: none;
            transition: border-color 0.2s ease;
        }

        .filtro-control:focus {
            border-color: var(--primary-color);
        }

        /* --- Sección CV Resumido --- */
        .seccion-biografia {
            display: flex;
            align-items: flex-start;
            gap: 35px;
            background-color: #111827;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 30px;
            margin-bottom: 40px;
            box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.2);
        }

        .bio-foto-container {
            flex: 0 0 220px;
        }

        .bio-foto {
            width: 100%;
            height: auto;
            border-radius: 10px;
            box-shadow: 0 4px 10px rgba(0, 0, 0, 0.4);
            border: 2px solid var(--border-color);
            object-fit: cover;
        }

        .bio-texto {
            flex: 1;
            font-size: 1.05em;
            color: #d1d5db;
            text-align: justify;
            margin: 0;
        }

        /* --- Estilos de los Proyectos --- */
        .proyecto-item {
            background-color: #111827;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            margin-bottom: 30px;
            padding: 30px;
            box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.2);
            transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
        }

        .proyecto-item:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 20px -3px rgba(0, 0, 0, 0.5);
            border-color: var(--primary-color);
        }

        .proyecto-fecha {
            display: inline-block;
            background-color: var(--accent-bg);
            color: #ffffff;
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 0.85em;
            font-weight: 600;
            margin-bottom: 16px;
            border: 1px solid var(--primary-hover);
        }

        .proyecto-alumno {
            font-size: 1.4em;
            color: #ffffff;
            font-weight: 700;
            margin: 0 0 8px 0;
            letter-spacing: -0.01em;
        }

        .proyecto-titulo {
            font-size: 1.15em;
            color: var(--primary-color);
            margin: 0 0 20px 0;
            font-weight: 500;
            line-height: 1.4;
        }

        .proyecto-contenido {
            display: flex;
            flex-wrap: wrap;
            gap: 30px;
        }

        .proyecto-imagen-container {
            flex: 0 0 240px;
        }

        .proyecto-imagen {
            width: 100%;
            height: auto;
            border-radius: 8px;
            box-shadow: 0 4px 6px rgba(0,0,0,0.3);
            object-fit: cover;
            max-height: 280px;
            opacity: 0.9;
            transition: opacity 0.2s ease;
        }

        .proyecto-item:hover .proyecto-imagen {
            opacity: 1;
        }

        .proyecto-info {
            flex: 1;
            min-width: 280px;
        }

        .proyecto-carrera {
            font-size: 0.95em;
            color: var(--text-muted);
            margin: 0 0 14px 0;
            text-transform: uppercase;
            letter-spacing: 0.05em;
        }

        .proyecto-abstract {
            font-size: 0.95em;
            color: #d1d5db;
            text-align: justify;
            margin-bottom: 20px;
        }

        .proyecto-abstract p {
            margin: 0 0 1em 0;
        }

        .directores {
            font-size: 0.9em;
            color: #a7f3d0;
            background-color: #064e3b;
            padding: 12px 16px;
            border-radius: 8px;
            border-left: 4px solid #10b981;
            margin-top: 20px;
        }

        /* --- Footer (Contacto e Institucional) --- */
        .site-footer {
            background-color: #0b0f19;
            border-top: 1px solid var(--border-color);
            margin-top: 80px;
            padding: 40px 0;
        }

        .footer-container {
            width: 90%;
            max-width: 1000px;
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            gap: 40px;
            justify-content: space-between;
        }

        .footer-col {
            flex: 1;
            min-width: 280px;
        }

        .footer-col.institucional {
            display: flex;
            flex-direction: column;
            align-items: flex-end; 
        }

        .institucional-content {
            display: inline-block;
            text-align: left;
        }

        .footer-col h3 {
            color: var(--primary-color);
            font-size: 1.2em;
            margin-top: 0;
            margin-bottom: 20px;
            font-weight: 700;
        }

        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-links li {
            margin-bottom: 15px;
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 1.05em;
        }

        .icon-contacto {
            font-size: 1.4em;
            display: inline-block;
            vertical-align: middle;
        }

        .footer-links a {
            color: var(--text-main);
            text-decoration: none;
            transition: color 0.2s ease;
        }

        .footer-links a:hover {
            color: var(--primary-color);
        }

        .footer-logos {
            display: flex;
            align-items: center;
            justify-content: flex-start;
            gap: 25px;
            flex-wrap: wrap;
            margin-top: 5px;
        }

        .link-logo {
            display: inline-block;
            transition: transform 0.2s ease;
        }

        .link-logo:hover {
            transform: scale(1.05);
        }

        .img-logo-institucional {
            height: 55px;
            width: auto;
            opacity: 0.85;
            transition: opacity 0.2s ease;
            object-fit: contain;
            filter: brightness(0) invert(1); 
        }

        .link-logo:hover .img-logo-institucional {
            opacity: 1;
        }

        @media (max-width: 768px) {
            .nav-rapida {
                gap: 8px;
                padding: 10px;
            }
            .btn-nav {
                font-size: 0.85em;
                padding: 6px 12px;
            }
            .container {
                width: 92%;
                padding: 20px;
                margin: 20px auto;
            }
            .seccion-filtros {
                align-items: stretch;
                padding: 15px;
            }
            .seccion-biografia {
                flex-direction: column;
                align-items: center;
                gap: 20px;
                padding: 20px;
            }
            .bio-foto-container {
                flex: 0 0 auto;
                width: 180px;
            }
            .proyecto-item {
                padding: 20px;
            }
            .proyecto-contenido {
                flex-direction: column;
                gap: 20px;
            }
            .proyecto-imagen-container {
                flex: 0 0 auto;
                width: 100%;
                max-width: 260px;
                margin: 0 auto;
            }
            .footer-container {
                flex-direction: column;
                gap: 35px;
            }
            .footer-col.institucional {
                align-items: flex-start; 
            }
        }