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

        body {
            font-family: Arial, Helvetica, sans-serif;
            display: flex;
            flex-direction: column;
            min-height: 100vh;
            background-color: #DDDDE2;
            color: #333;
            font-weight: bold;
            line-height: 1.4;
        }

        /* ===== ESTRUCTURA PRINCIPAL ===== */
        .header-centro-estudios,
        .header-horarios,
        .encabezado,
        .container,
        #footer {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
        }

        /* ===== HEADERS ===== */
        .header-centro-estudios {
            background-color: #DDDDE2;
            padding: 20px;
            text-align: center;
            font-size: 24px;
            color: #700000;
            border-bottom: 2px solid #D0D0D4;
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 20px;
            text-shadow: -5px 5px 2px rgb(175 175 175 / 50%);
        }

        .header-centro-estudios img {
            height: 80px;
            margin: 0 20px;
        }

        .header-horarios {
            background-color: #800000;
            padding: 12px;
            text-align: center;
            font-size: 18px;
            color: white;
        }

        .encabezado {
            text-align: center;
            font-family: "Arial Black", "Arial Bold", sans-serif;
            text-transform: uppercase;
            letter-spacing: 1px;
            background-color: #DDDDE2;
            padding: 10px 0;
        }

        .titulo-principal {
            color: #9E0B0F;
            font-size: 24px;
            margin-bottom: 5px;
            text-shadow: -4px 4px 2px rgba(0, 0, 0, 0.2);
        }

        .subtitulo {
            color: #666666;
            font-size: 18px;
            font-weight: normal;
            margin-top: 0;
        }

        /* ===== CONTENEDOR PRINCIPAL ===== */
        .container {
            display: flex;
            flex: 1;
            min-height: 0;
            background-color: white;
        }

        /* ===== PANEL IZQUIERDO (OPTIONS) ===== */
        .options {
            width: 220px;
            background-color: white;
            padding: 15px;
            border-right: 2px solid #800000;
            flex-shrink: 0;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        /* ===== BOTONES PRINCIPALES ===== */
        .semestre-button,
        .creditos-button,
        .informacion-button,
        .casa-button,
        .mecatronica-button {
            display: block;
            width: 100%;
            padding: 12px 8px;
            border: none;
            cursor: pointer;
            text-align: center;
            font-size: 14px;
            transition: all 0.2s ease;
            border-radius: 0;
            white-space: nowrap;
        }

        .semestre-button {
            background-color: #800000;
            color: white;
        }

        .creditos-button,
        .informacion-button {
            background-color: #666;
            color: white;
        }

        .casa-button {
            background-color: #800000;
            color: white;
        }

        .mecatronica-button {
            background-color: #003366;
            color: white;
        }

        .semestre-button:hover,
        .creditos-button:hover,
        .informacion-button:hover,
        .casa-button:hover,
        .mecatronica-button:hover {
            filter: brightness(1.15);
            transform: translateY(-1px);
        }

        /* ===== CONTENIDO CENTRAL ===== */
        .content {
            flex: 1;
            display: flex;
            min-height: 0;
            overflow: hidden;
        }

        /* ===== PANEL DE SEMESTRES ===== */
        .semester-container {
            width: 220px;
            background-color: white;
            padding: 15px;
            border-right: 2px solid #800000;
            flex-shrink: 0;
            display: none;
            flex-direction: column;
            gap: 12px;
        }

        .semester-buttons {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .semester-buttons button {
            background-color: #800000;
            color: white;
            border: none;
            padding: 12px 8px;
            cursor: pointer;
            text-align: center;
            font-size: 13px;
            transition: all 0.2s ease;
            white-space: normal;
            min-height: 80px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .semester-buttons button:hover {
            filter: brightness(1.15);
            transform: translateY(-1px);
        }

        .close-button {
            background-color: #666;
            color: white;
            margin-top: 10px;
            padding: 10px;
            cursor: pointer;
            width: 100%;
            border: none;
        }

        /* ===== PANEL DE INFORMACIÓN ===== */
        .info-container {
            flex: 1;
            padding: 20px;
            background-color: #f1f1f1;
            display: none;
            overflow: auto;
            min-height: 300px;
            width: 100%;
        }

        .info-container h1,
        .info-container h2,
        .info-container h3 {
            color: #700000;
            margin-bottom: 15px;
        }

        .info-container p,
        .info-container li {
            margin-bottom: 10px;
            line-height: 1.6;
            color: #333;
        }

        .info-container ol,
        .info-container ul {
            padding-left: 20px;
            margin-bottom: 15px;
        }

        .info-container a {
            color: #800000;
            text-decoration: none;
        }

        .info-container a:hover {
            text-decoration: underline;
        }

        .info-container iframe {
            width: 100%;
            height: 100%;
            min-height: 400px;
            border: none;
        }

        /* Estilos específicos para el contenido de inicio */
        .info-container[style*="display: block"] {
            display: flex !important;
            flex-direction: column;
            justify-content: flex-start;
            align-items: flex-start;
            text-align: left;
        }

        /* ===== SECCIONES DE INICIO ===== */
        .seccion-inicio {
            margin-bottom: 30px;
            width: 100%;
        }

        .seccion-titulo {
            color: #700000;
            border-bottom: 2px solid #800000;
            padding-bottom: 8px;
            margin-bottom: 15px;
            font-size: 22px;
        }

        .novedades-lista {
            list-style-type: none;
            padding-left: 0;
        }

        .novedades-lista li {
            padding: 10px;
            margin-bottom: 10px;
            background-color: #f9f9f9;
            border-left: 4px solid #800000;
        }

        .novedades-fecha {
            font-size: 12px;
            color: #666;
            font-style: italic;
        }

        .herramientas-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
            gap: 15px;
            margin-top: 15px;
        }

        .herramienta-item {
            background-color: #f9f9f9;
            padding: 15px;
            border-radius: 5px;
            text-align: center;
            transition: transform 0.2s;
        }

        .herramienta-item:hover {
            transform: translateY(-5px);
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
        }

        .herramienta-item a {
            color: #800000;
            text-decoration: none;
            font-weight: bold;
        }

        /* ===== FOOTER ===== */
        #footer {
            background-color: #DDDDE2;
            margin-top: auto;
            color: white;
            text-align: center;
            border-top: thick solid #D0D0D4;
            padding: 20px 0;
        }

        #FooterContainer {
            padding: 0 20px;
            color: #78668C;
        }

        #FooterContainer span {
            color: #700000;
            font-size: 15px;
            text-shadow: 1px 1px 2px rgba(44, 44, 44, 0.5);
        }
.video-button {
    background-color: #a10f0f;
    color: white;
    border: none;
    padding: 12px 24px;
    cursor: pointer;
    text-align: center;
    font-size: 16px;
    font-weight: bold;
    transition: all 0.3s ease;
    margin: 15px 0;
    display: inline-block;
}

.video-button:hover {
    background-color: #da1919;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
}
        /* ===== DISEÑO RESPONSIVE ===== */
        @media (max-width: 768px) {
            /* HEADERS */
            .header-centro-estudios {
                flex-direction: column;
                padding: 15px;
                font-size: 20px;
                gap: 10px;
            }
            
            .header-centro-estudios img {
                height: 60px;
                margin: 5px 0;
            }
            
            .header-horarios {
                font-size: 16px;
                padding: 10px;
            }
            
            .titulo-principal {
                font-size: 20px;
            }
            
            .subtitulo {
                font-size: 16px;
            }

            /* CONTENEDOR PRINCIPAL */
            .container {
                flex-direction: column;
            }

            /* PANELES */
            .options,
            .semester-container,
            .info-container {
                width: 100%;
                border-right: none;
            }

            .options {
                padding: 12px;
                flex-direction: row;
                flex-wrap: wrap;
                gap: 10px;
                border-bottom: 2px solid #800000;
            }

            .semestre-button,
            .creditos-button,
            .informacion-button,
            .casa-button,
            .mecatronica-button {
                width: calc(50% - 5px);
                padding: 10px;
                font-size: 13px;
                white-space: normal;
            }

            /* CONTENEDOR DE CONTENIDO */
            .content {
                flex-direction: column;
            }

            .semester-container {
                padding: 12px;
                order: 1;
                border-bottom: 2px solid #800000;
            }

            .semester-buttons {
                flex-direction: row;
                flex-wrap: wrap;
                gap: 10px;
            }

            .semester-buttons button {
                width: calc(50% - 5px);
                min-height: 70px;
                font-size: 12px;
                padding: 10px;
            }

            .close-button {
                width: 100%;
            }

            .info-container {
                padding: 15px;
                order: 2;
                min-height: 300px;
                border-top: 2px solid #800000;
            }

            .info-container h1 {
                font-size: 22px;
            }

            .info-container h2 {
                font-size: 20px;
            }

            .info-container h3 {
                font-size: 18px;
            }

            .info-container p,
            .info-container li {
                font-size: 15px;
            }

            /* SECCIONES DE INICIO */
            .herramientas-grid {
                grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
            }

            /* MOSTRAR CONTENEDORES CUANDO SON NECESARIOS */
            .semester-container[style*="display: flex"],
            .info-container[style*="display: block"] {
                display: flex !important;
            }
        }

        @media (max-width: 480px) {
            /* HEADERS */
            .header-centro-estudios {
                font-size: 18px;
            }
            
            .header-centro-estudios img {
                height: 50px;
            }
            
            .titulo-principal {
                font-size: 18px;
            }
            
            .subtitulo {
                font-size: 14px;
            }
            
            .header-horarios {
                font-size: 14px;
            }

            /* BOTONES */
            .semestre-button,
            .creditos-button,
            .informacion-button,
            .casa-button,
            .mecatronica-button {
                width: 100%;
                font-size: 12px;
            }

            .semester-buttons button {
                width: 100%;
                font-size: 11px;
            }

            /* FOOTER */
            #FooterContainer span {
                font-size: 13px;
            }

            .info-container h1 {
                font-size: 20px;
            }

            .info-container h2 {
                font-size: 18px;
            }

            .info-container h3 {
                font-size: 16px;
            }

            .info-container p,
            .info-container li {
                font-size: 14px;
            }

            /* SECCIONES DE INICIO */
            .herramientas-grid {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 768px) {
    .video-button {
        width: 100%;
        padding: 15px;
        font-size: 15px;
    }
}

@media (max-width: 480px) {
    .video-button {
        font-size: 14px;
        padding: 12px;
    }
}
/* ===== BOTONES NUEVOS ===== */
.sistemas-digitales-button,
.programacion-button {
    display: block;
    width: 100%;
    padding: 12px 8px;
    border: none;
    cursor: pointer;
    text-align: center;
    font-size: 14px;
    transition: all 0.2s ease;
    border-radius: 0;
    white-space: nowrap;
    min-height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.sistemas-digitales-button {
    background-color: #b44200; /* Amarillo */
    color: #ffffff; /* Texto oscuro para mejor contraste */
}

.programacion-button {
    background-color: #336633; /* Verde */
    color: white;
}

.sistemas-digitales-button:hover,
.programacion-button:hover {
    filter: brightness(1.15);
    transform: translateY(-1px);
}
@media (max-width: 768px) {
    .sistemas-digitales-button,
    .programacion-button {
        width: calc(50% - 5px);
        padding: 10px;
        font-size: 13px;
        white-space: normal;
        min-height: 70px;
    }
}

@media (max-width: 480px) {
    .sistemas-digitales-button,
    .programacion-button {
        width: 100%;
        font-size: 12px;
        min-height: 65px;
    }
}